TECO-Westinghouse Motor Anab EQ5, Anab EQ Series Operation Manual

EQ5 AC Drive Operations Manual

Document: TWMC-EQ5OM
Revision: 001P0

EQ5 AC Drive Operations Manual

Preface
Thank you for purchasing our EQ5 series inverter. This product is used to drive a 3-phase electric motor at
variable speed. As incorrect use of this product may result in personal injury and/or property damage,
please read all safety and operating instructions before using.

Safety Instructions

Please read this manual carefully before installing, connecting (wiring), operating, servicing, or inspecting the
inverter. Also please familiarize yourself with all safety features before using the inverter.

In this manual, safety messages are classified as follows:

Caution

Situations more serious than those covered by CAUTION will depend on prevailing circumstances.
Always follow instructions.

Instructions on use:

Danger

Improper operation may result in serious personal injury or death.
Improper operation may result in slight to medium personal injury or property

damage.

Danger

• This inverter is designed to drive a 3-pha se ind uction motor and is not suitable for a single-phase motor or
any other types, as fire may result.

• This inverter may not be used (as is) as a component of a life-support system or other medical device
directly affecting the personal welfare of the user.

• This inverter is manufactured under strict quality control standards. However, safety equipment must be
installed if the failure of this device may result in personal injury and/or property damage.

• There is a risk of accident.

Instructions on installation:

Danger

• Mount this inverter on an incombustible material such as metal. There is a risk of fire.

• Do not place combustible or flammable material near this inverter, as fire may result.

• Do not hold or carry this inverter by the surface cover. Inverter may be dropped causing injury.

• Ensure that the inverter and heat sink surfaces are kept free of foreign matter (lint, paper dust, small chips

of wood or metal, and dust), as fire or accident may result.

• Do not install or operate a damaged inverter or an inverter with missing parts, as injury may result.

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TECO – Westinghouse Motor Company Compliance with UL

Caution

EQ5 AC Drive Operations Manual

Instructions on wiring:

Danger

• Connect the inverter to power via a line-protection molded-case circuit breaker or fuse, otherwise fire may
result.

• Always connect a ground wire, otherwise electric shock or fire may result.

• A licensed specialist must perform the wiring, otherwise electric shock may result.

• Turn off the power before starting the wiring, otherwise electric shock may result.

• Wire the inverter after installation is complete, otherwise electric shock or injury may occur.

Caution

• Confirm that the phases and rated voltage of this product match those of the AC power supply, otherwise
injury may result.

• Do not connect the AC power supply to the output terminals (U,V,and W), otherwise injury may result.

• Do not connect a braking resistor directly to the DC terminals (P(+)and N(-)),otherwise fire may result.

• Ensure that the noise generated by the inverter, motor, or wiring does not adversely affect peripheral

sensors and equipment, otherwise accident may result.

Instructions on operation:

Danger

• Be sure to install the surface cover before turning on power (closed). Do not remove the cover while
power to the inverter is on. Otherwise electric shock may occur.

• Do not operate switches with wet hands, otherwise electric shock may result.

• When the retry function is selected, the inverter may restart automatically after tripping. Design the machine

to ensure personal safety in the event of restart. Accident may result.

• When the torque limiting function is selected, operating conditions may differ from preset conditions
(acceleration/deceleration time or speed). In this case, personal safety must be assured. Otherwise
accident may result.

• As the STOP key is effective only when a function setting has been established, install an emergency
switch independently, and when an operation via the external signal terminal is selected, the STOP key on
the keypad panel will be disabled. Otherwise accident may result.

• As operations start suddenly if an alarm is reset with a running signal input, confirm that no running signal
is input before resetting alarm. Otherwise accident may result.

• Do not touch inverter terminals when energized even if inverter has stopped. Otherwise electric shock
may result.

Caution

• Do not start or stop the inverter using the main circuit power. Failure may result.

• Do not touch the heat sink or braking resistor because they can be extremely hot. Burns may result.

• Carefully check the performance of motor or machine before operating at high speed. Injury may result.

• Do not use the inverter braking function for mechanical holding. Otherwise injury may result.

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TECO – Westinghouse Motor Company Compliance with UL

EQ5 AC Drive Operations Manual

Instructions on maintenance, inspection, and replacement:

Danger

• Wait a minimum of five minutes (30HP/CT, 40HP/VT or less) or ten minutes (40HP/CT, 50HP/VT or more)
after power has been turned off (open) before starting an inspection. (Also confirm that the charge la mp is
off and that DC voltage between terminals P (+) and N (-) does not exceed 25V.) Otherwise electrical
shock may result.

• Only authorized personnel should perform maintenance, inspection, and replacement operations.(Take off
metal jewelry such as watches and rings and use insulated tools.) Otherwise electric shock or injury

may result.

Instructions on disposal:

Caution

• Treat as industrial waste when disposing it. Otherwise injury may result.

Other instructions:

Danger

• Never modify the product. Otherwise electric shock or injury may result.

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TECO – Westinghouse Motor Company Compliance with UL

EQ5 AC Drive Operations Manual

Compliance with UL/cUL standards [Applicable to products with UL/cUL mark]

Caution
Tightening torque and wire range: Refer to Table 2-3-5 in Section 2

Apply the following power supply specifications to the inverter:

Inverter Model Maximum input voltage Input source current

EQ5 - 20P2 - N1 to EQ5 - 2032 - N1
EQ5 - 2040 - C to EQ5 - 2150 - C
EQ5 - 40P5 - N1 to EQ5 - 4032 - N1
EQ5 - 4040 - C to EQ5 - 4800 - C

* [CAUTION] Hazard of electrical shock. Disconnect incoming power before working on this control.

* [CAUTION] Dangerous voltage exists until charge light is off.
* [WARNING]
* More than one live parts inside the inverter.
* Type1 “INDOOR USE ONLY”

The inverter is approved as a part used inside a panel. Install it inside a panel.
* Suitable for use on a circuit capable of delivering not more than 100,000rms symmetrical amperes.
* Use 60/75C copper wire only.
* A Class2 circuit wired with class1 wire.
* Field wiring connections must be made by a UL Listed and CSA Certified closed-loop terminal connector

sized for the wire gauge involved. Connector must be fixed using the crimp tool specified by the

connector manufacturer.
* Connect the power supply to main power supply terminals via the Molded-case circuit breaker (MCCB) or

a ground fault circuit interrupter (GFCI) to conform to the UL Listing Mark.

(See Instruction Manual basic connection diagram Fig.2-3-1).
* When using auxiliary control-power input (R0, T0), connect as per Basic connection diagram Fig.2-3-1.
* Solid state motor overload protection is provided in each model.

AC240V

Not more than 100,000A

AC480V

Caution

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TECO – Westinghouse Motor Company Compliance with UL

EQ5 AC Drive Operations Manual

Contents

Pg.
Before Using This Product ···························· 1

1-1 Receiving Instructions ·························· 1
1-2 Appearance ······································· 1
1-3 Handling the Product ························· 2-3
1-4 Carrying and Moving the Product ··········· 3
1-5 Storage ·········································· 3-4

2. Installation and Electrical Connections ·········· 5
2-1 Operating Environment ························ 5
2-2 Installation Method ···························· 5-7
2-3 Electrical Connections ························· 8

2-3-1 Basic Power Electrical Connections ·· 8

Fig. 2-3-1 Basic Wiring Diagram.................9

2-3-2 Connecting Input power, Motor and
Ground Terminals ··················· 10-16
2-3-3 Connecting the Control Terminals 17-21
2-3-4 Input Protection Device Ratings ······· 22
2-3-5 Terminal Tightening Torque and
Cable Size ································· 23

2-3-6 DC Link Choke Wattage Loss…….....24

3. Initial Operation ······································ 25
3-1 Inspection and Preparation Before
Operation ·········································· 25
3-2 Operation Method ······························ 25
3-3 Trial Run ······································ 25-26

4. Digital Operator ······································ 27
4-1 Appearance of Digital Operator ········· 27-28
4-2 Digital Operator LCD screen,
Level Structure ··································· 28

4-2-1 Normal Operation ························ 28
4-2-2 Alarm Modes ·························· 28-29

4-3 Digital Operator Keypad Navigation ······· 30

4-3-1 Operation Mode ·························· 30
4-3-2 Setting the Output Frequency ········· 30
4-3-3 Switching to the LED Monitor ········· 31
4-3-4 Program Menu Screen ·················· 31
4-3-5 Setting the Parameter Values ····· 32-33
4-3-6 Checking Parameter Data ············· 33
4-3-7 Monitoring Operating Status ··········· 33
4-3-8 I/O Check ·································· 34
4-3-9 Maintenance Information ··············· 35
4-3-10 Load Rate Measurement ············· 36
4-3-11 Alarm Information ······················· 37
4-3-12 Alarm History and Possible
Reasons ··································· 38
4-3-13 Data Copy, Verify and Error
Processing ··························· 39-40
4-3-14 Alarm Mode ······························ 41

Pg.

5. Parameters F,E,C,P,H, A and U ·················· 42
5-1 Parameter Summary List ················· 42-45
5-2 Parameter Explanation ··················· 46-86

6. Alarms Codes, Causes and Troubleshooting · 87
6-1 List of Alarm Codes and Causes ······· 87-88
6-2 Alarm Reset ····································· 89

6-3 Troubleshooting Alarm Codes and
Causes (Flowcharts)………….….……...90-96

7. Maintenance and Inspection ······················ 97
7-1 Daily Inspection ································· 97
7-2 Periodic Inspection ························ 97-99

Inspection Notes and Records..................100

7-3 Main Circuit Voltage, Current and Power

Measurements…………………………......101

7-4 Insulation Test ································· 102

s Re

7-5 Part
7-6 Inquiries about Damaged Products ······· 103
7-7 Warranty…………………………………….

8. Specifications ········································ 104
8-1 Standard Specifications ··············· 104-106
8-2 Common Specifications ····················· 107
8-3 Outline Dimensions and Weights ··· 108-111
8-4 RS-485 Modbus RTU Serial

Communications ······························· 112

8-4-1 Transmission Specification ············ 112
8-4-2 Connection ································ 112
8-4-3 Serial Interface Configuration ········· 112
8-4-4 Modbus RTU Functions ················ 112
8-4-5 Inverter Function Code Access ······ 113
8-4-6 Command and Monitor

Data Registers······················ 113-115

8-4-7 Data Format Specification ······· 115-119
8-4-8 Communication Errors ·················· 119

9. Options ················································ 120

10. Electromagnetic Compatibility (EMC) ········ 121
10-1 General ········································ 121
10-2 Recommended Installation

placement ··························· 102

Instructions ···························· 121-124

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TECO – Westinghouse Motor Company Index

EQ5 AC Drive Operations Manual

1. Before Using This Product

1-1 Receiving Instructions

Unpack and check the product as explained below.

If you have any questions about the product,

contact the nearest TWMC sales office or your
local distributor where you purchased the unit.

1. Check the ratings on the nameplate to confirm
that the delivered product is the one that was
ordered.

TYPE : Inverter type

SOURCE : Power rating
OUTPUT : Output rating
MASS : Mass (not indicated for produ cts with 30HP/CT, 40HP/VT or less)
SER.No. : Serial number

5 XXXXXXXXXXXXX

8

Production lot serial number
Production month:1 to 9: January to September,
X: October, Y: November, Z: December

Production year: Last digit of year (7 --> 2007)

2. Check for damaged and/or missing parts.

3. In addition to the drive unit and this manual, the package contains rubber bushings (for products of
30HP/CT, 40HP/VT or less) and a terminating resistor (1/2 W, 120) which is packed separately. The
terminating resistor for products rated 40HP/CT, 50HP/VT or more, is installed internally. The
terminating resistor is required for RS485 communication and can remain installed regardless of RS­485 communication status.

1-2 Appearance

Mounting screws of surface cover

Digital Operator

Surface cover

30HP/CT, 40HP/VT or Less

Mounting screws of
surface cover
(6 screws total)

Digital Operator

Intermediate cover

Surface cover

Ratings nameplate

40HP/CT, 50HP/VT or More

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TECO – Westinghouse Motor Company Receiving and Handling 1

EQ5 AC Drive Operations Manual

1-3 Handling the Product

1. Removing the cover
For drives rated 30HP/CT, 40HP/VT or less, loosen the mounting screws of the cover, then remove by
pulling the top (see Fig. 1.3.1).

Fig. 1-3-1 Removing the Surface Cover (for inverters rated 30HP/CT, 40HP/VT or less)

For drives of 40HP/CT, 50HP/VT or more, first remove the six mounting screws, then remove the cover
(see Fig. 1-3-2).

Fig. 1-3-2 Removing the Surface Cover (for inverters rated 40HP/CT, 50HP/VT or more)

2. Removing the digital operator
After removing the cover as explained in (1.), loosen the mounting screws of the digital operator and
remove as shown in Fig.1.3.3.

Fig. 1-3-3 Removing the Digital Operator (30HP/CT, 40HP/VT or less)

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TECO – Westinghouse Motor Company Receiving and Handling 2

EQ5 AC Drive Operations Manual

For drives 40HP/CT, 50HP/VT or more, loosen the mounting screws of the digital operator and remove
using the finger holds on the digital operator case (see Fig. 1-3-4).

Fig. 1-3-4 Removing the Digital Operator (40HP/CT, 50HP/VT or more)

1-4 Carrying and Moving the Product

1. Carry the product by the main body.
Do not carry the product while holding the cover or parts other than the main body.

2. Use a crane or hoist to carry a product equipped with handling hooks.

1-5 Storage

Temporary Storage

Temporary storage of this product must meet those conditions listed in Table 1-5-1.

Table 1-5-1 Storage Environment

Item Specifications

Ambient

temperature

Storage

temperature

Relative
humidity

Atmosphere

Note1: The storage temperature applies only to short periods of time such as when transporting
the equipment .
Note2: As a large change in temperature within this humidity range may result in condensation or freezing,

do not store where such temperature changes may occur.

-10 (14°F) to +50 (122°F)

-25 (-13°F) to +65 (149°F)
5 to 95%

The product must not be exposed to dust, direct sunlight, corrosive gas, oil
mist, vapor, or water. There must be a minimum salt content in the
atmosphere. Do not store where condensation may occur as a result of
sudden changes in temperature.

Note2

Note1

Condensation or freezing must not occur as
a result of sudden temperature changes.

1. Do not place this product directly on a floor.

2. To store the product in an extreme environment, pack in vinyl sheeting, etc.

3. If the product is stored in a high-humidity environment, insert a drying agent (e.g., silica gel)
and pack the product in vinyl sheeting.

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TECO – Westinghouse Motor Company Receiving, Handling, and Storage 3

EQ5 AC Drive Operations Manual

Long-term Storage

If the product is to be stored for an extended period of time after purchase, the method of storage depends
primarily on storage location.
The general long-term storage method is as follows:

1. The above conditions for temporary storage must be satisfied.
When the storage period exceeds three months, the upper limit of ambient temperature must
be reduced to 30º (86ºF) to prevent the deterioration of the electrolytic capacitors.

2. Pack the product thoroughly to eliminate exposure to moisture and include a drying agent to

ensure a relative humidity of about 70% or less.

3. If the product is mounted on equipment or a control panel and is not being unused and is exposed to
the elements such as like moisture or dust (particularly on a construction site), remove the product and
store in a suitable environment.

4. Electrolytic capacitors not provided with voltage for extended periods of time will deteriorate. Do not
store electrolytic capacitors longer than one year without providing voltage to them.

NOTES

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TECO – Westinghouse Motor Company Receiving, Handling, and Storage 4

2

EQ5 AC Drive Operations Manual

2. Installation and Electrical Connections

2-1 Operating Environment

Install this product in a location that meets the conditions listed in Table 2-1-1

Table 2-1-1 Operating Environment

Item Specifications

Location Indoors

-10Cº to +50ºC (14ºF to 122ºF) ­For products of 30HP/CT,

Ambient

temperature

40HP/VT or less, the ventilating
covers must be removed if the
ambient temperature exceeds
+40ºC (104ºF)

Relative
humidity

5 to 95% non-condensing

The product must not be exposed
to dust, direct sunlight, corrosive
gas, oil mist, vapor, or water.

Atmosphere

There must be a minimum salt
content in the atmosphere. Do not
store where condensation may
occur as a result of sudden
changes in temperature.
1000 m (3300 feet) or lower - For

Altitude

altitudes above 1000 m (3300
feet), see Table 2-1-2.

Vibration

3mm peak from 2 to 9Hz, 9.8m/s
from 9 to 20Hz,

2

from 20-55Hz, 1m/s2 from

2m/s
55 to 200Hz.

Table 2-1-2 Output Current Reduction

3300ft or lower (1000m) 1.00

Rate Based on Altitude

Altitude

3300-4950ft

Output current

reduction rate

(1000 to 1500m)

4950-6600ft

(1500 to 2000m)

6600-8250ft

(2000 to 2500m)

8250-9900ft

(2500 to 3000m)

Fig. 2-2-1

30HP/CT, 40HP/VT or less:
Gap X can be 0.
(side-by- side installation)

0.97

0.95

0.91

0.88

2-2 Installation Method

1. Mounting, dimensional and weight information for all of the inverter models, is covered in Sec. 8-3 of

this manual. Select the model being used and prepare the installation.

2. Securely fasten the product in a vertical upright position on a solid structure with the product
logo facing the front. Do not mount the product upside down or install in a horizontal position
as proper ventilation will be inhibited.

3. As heat is generated during inverter operation, the spaces shown in Fig. 2-2-1 are required to
ensure sufficient cooling. Since heat radiates upward, do not install the product beneath
heat sensitive equipment.

4. During operation, the heat sink may reach a temperature of 90ºC (194ºF), therefore ensure that
the material surrounding the product can withstand this temperature.

DANGER

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TECO – Westinghouse Motor Company Installation Environment & Method 5

40HP/CT, 50HP/VT or more:
Gap X >= 2.0” (50mm)

Install this product on nonflammable material such as metal.

f

EQ5 AC Drive Operations Manual

5. When installing this product in a control panel,
ensure that the ventilation is sufficient to prevent the
ambient temperature of the inverter from exceeding
the specified value. Do not install the product in an
area where there is inadequate ventilation,

6. If two or more inverters must be installed in the
same equipment or control panel, arrange the units
horizontally (side by side) to minimize the effect of
heat. If two or more inverters must be installed
vertically (one on top of the other), place an
insulated plate between the inverters to minimize the
effect of heat.

7. When shipped from the factory, inverters provide
internal cooling inside panel. An inverter of
30HP/CT, 40HP/VT or less can be converted to an
external cooling simply by adding an optional
mounting adapter.

In an external cooling system, the heat sink radiates about 70% of total inverter heat (total
loss) and can be placed outside the control panel (see Fig. 2-2-2). When doing this, ensure
that heat sink surfaces are kept free of foreign matter.

Fig.2-2-2

･In the case of external cooling system, cover the back of the inverter
in order to prevent the exposure of the power capacitor and braking
resistor as electric shock may result.

DANGER

An inverter of 40HP/CT, 50HP/VT or more can be converted to an external cooling type simply by

moving

upper and lower mounting brackets as shown in Fig. 2-2-3. Remove the M6 bracket screws,
move the brackets, then secure the brackets using the M5 case mounting screws. (The
bracket screws are no longer required after changing the bracket mounting position.)

･Ensure that the inverter and heat sink surfaces are kept free of
foreign matter such as lint, paper dust, small chips of wood or metal,
and dust, as

ire may result.

Quantity of Mounting Screws

Voltage

Series

EQ5 - 2040 - C to EQ5 - 2100 - C 5 (M6x20) 5 (M5x16)

230V

460V

*1 Secure the brackets changing the screws, size:M5, length:20mm.
*2 Secure the brackets using the brackets screws.

EQ5 - 2125 - C 7 (M6x20) 5 (M5x16)
EQ5 - 2150 - C 6 (M6x20) 6 (M5x16)
EQ5 - 4040 - C to EQ5 - 4125 - C 5 (M6x20) 5 (M5x16)
EQ5 - 4150 - C to EQ5 - 4200 - C 7 (M6x20) *1 5 (M5x16)
EQ5 - 4250 - C to EQ5 - 4300 - C 7 (M6x20) 7 (M5x16)
EQ5 - 4350 - C to EQ5 - 4400 - C 6 (M6x20) *1 6 (M5x16)
*3 EQ5 - 4450 - C to EQ5 - 4600 - C 6 (M8x20) *2
*3 EQ5 - 4150 - C to EQ5 - 4200 - C 8 (M8x20) *2

Inverter Type Bracket Screws

Case

Mounting

Screws

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TECO – Westinghouse Motor Company Installation Method 6

EQ5 AC Drive Operations Manual

*3 Do not use the bottom brackets in the bottom surface mount Installation.

Fig. 2-2-3 40HP/CT, 50HP/VT or more Removing Upper and Lower Brackets

8. For inverters of 30HP/CT, 40HP/VT or less, remove the ventilating covers if ambient temperature

exceeds +40°C (104°F)

(1) Removing the ventilating covers:

One ventilating cover is mounted on top of the inverter and the other two or three are mounted at
the bottom.

Fig. 2-2-4 30HP/CT, 40HP/VT or Less Removing Ventilating Covers

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TECO – Westinghouse Motor Company Installation Method 7

EQ5 AC Drive Operations Manual

2-3 Electrical Connections

To access the terminal blocks remove the cover in accordance with the instructions in this manual.

2-3-1 Basic Power Electrical Connections

1. Always connect input power to the main circuit power terminals L1/R, L2/S, and L3/T
of the inverter. Check that the input voltage to be applied is within the maximum allowable
voltage marked on the nameplate.

2. Always connect the power output terminals U, V, and W to the motor. Check that output
voltage rating is correct for the motor being used.

DANGER- Do not connect the input voltage to the motor terminals U, V, and W as

extreme damage and / or injury may result.

3. Using the proper wire size and type, always bond the ground terminal to a reliable ground
connection to prevent dangerous situations such as the possibility of fire or electrical shock
and to minimize electrical noise.

4. Use a secure reliable cable crimp connection between the terminal and a cable.

5. After terminating the wiring connection, ensure the following:

a. The connection is correct.
b. All necessary connections have been made.
c. There is no short-circuit or ground fault between terminals and cables.

6. If a wiring change needs to be made after power-up, wait at least 5 minutes before making

any wiring changes. Also ensure that the charge indicating LED is off. This is necessary
because the DC power section capacitor(s) does not discharge immediately after power-down
and maintains lethal voltages. The actual DC voltage may also be checked with a multimeter
and should be 25VDC or less. If short circuiting the DC voltage after power-down, sparks
may occur.

• Always properly ground the inverter otherwise electric shock or fire

may result.

• Ensure that a licensed specialist performs all wiring and that all codes

DANGER

are met.

• Confirm that the power is turned off and that the charge indicator is off

(Wait 5 minutes for 30HP/CT, 40HP/VT and less, 10 minutes for
40HP/CT, 50HP/VT or above) before removing any protective covers as
lethal voltages are present and electrical shock may result.

NOTES

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TECO – Westinghouse Motor Company Electrical Connections 8

EQ5 AC Drive Operations Manual

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TECO – Westinghouse Motor Company Basic Wiring Diagram 9

EQ5 AC Drive Operations Manual

2-3-2 Connecting the Input Power, Motor Output Power, and Ground Terminals

The following shows the terminal arrangements for the various HP ranges of the EQ5.

The terminal screw sizes are also shown for reference.

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TECO – Westinghouse Motor Company Power Terminal Designations & Wiring 10

EQ5 AC Drive Operations Manual

Screw size: M4

R0 T0

L1/R L2/S L3/T

L1/R L2/S L3/T

POWER INPUT

G

Screw size: G M10 –
Other Terminals M12

Screw size: M4

R0 T0

L1/R L2/S L3/T

L1/R L2/S L3/T

POWER INPUT

Screw size: G M10 –
Other Terminals M12

G

P1

P1

P1

U VW

P1

U VW

P(+) P(+)

N(-)

N(-)

500 – 600 HP 460 VAC

N(-)

P(+)

P(+)

N(-)

700 – 800 HP 460 VAC

MOTOR

U VW

U VW

MOTOR

G

G

Table 2-3-1 Functions of Main Circuit Terminals and Ground Terminals

Symbol Terminal Name Description

L1/R, L2/S, L3/T

U, V, W Inverter output terminals Connects to a 3-phase motor.

R0, T0

P1, P (+)

P (+), DB

P (+), N (-) DC link circuit terminals

G

1. Main circuit input power terminals (L1/R, L2/S, L3/T)
a. For circuit (wiring) protection, connect these terminals to the input power supply using a
molded-case circuit breaker or a ground-fault circuit interrupter. Phase-sequence
matching is unnecessary.
b. To ensure safety, a magnetic contactor should be connected to disconnect the inverter
from the input power supply when the inverter protective function activates.
c. The main circuit input power should be used to start or stop the inverter only if absolutely
necessary and then should not be used more than once every hour.
d. If you need to connect these terminals to a single-phase power supply, please consult

the factory.

Main circuit input power
terminals.

Auxiliary control-power
input terminals.

DC link reactor terminal
connection.

External braking resistor
terminal connections.

Connects to a 3-phase power supply.

Connects a backup AC power supply to the
control circuit. (Not applicable to inverters
of 1HP or less)

Connects a power-factor correcting DC link
reactor. (optional)

Connects an external braking resistor for
inverters 10HP/CT, 15HP/VT or less.

Supplies DC link voltage to the external
braking or power regeneration unit
(optional).

Inverter ground terminal Inverter chassis (case) ground.

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TECO – Westinghouse Motor Company Power Terminal Designations & Wiring 11

EQ5 AC Drive Operations Manual

2. Inverter output terminals (U, V, W)
a. Connect these terminals to a 3-phase motor in the correct phase sequence. If the
direction of motor rotation is incorrect, swap any two of the U, V, and W phases.
b. Do not connect a power factor correction capacitor or surge suppressor to the inverter
output.
c. If the cable from the inverter to the motor is excessively long, a high-frequency current
can be generated by stray capacitance between the cables and result in an overcurrent
trip of the inverter, an increase in leakage current, or a reduction in current indication
precision.
d. When a motor is driven by a PWM-type inverter, the motor terminals may be subject to
surge voltage generated by PWM switching. If the motor cables are excessively long,
particularly the 460V series units, the surge voltage will deteriorate motor insulation
over time. To prevent this, use the following guidelines:

Inverters 7.5HP/CT, 10HP/VT and Higher

Motor Insulation Rating 1000V 1300V 1600V
460 VAC Input Voltage 66 ft (20 m) 328 ft (100 m) 1312 ft (400 m) *
230 VAC Input Voltage 1312 ft (400 m) * 1312 ft (400 m) * 1312 ft (400 m) *

Inverters 5HP/CT/VT and Smaller

Motor Insulation Rating 1000V 1300V 1600V
460 VAC Input Voltage 66 ft (20 m) 165 ft (50 m) * 165 ft (50 m) *
230 VAC Input Voltage 328 ft (100 m) * 328 ft (100 m) * 328 ft (100 m) *
* In this case the cable length is determined by secondary effects and not voltage

spiking.

Note: When a motor protective thermal O/L relay is inserted between the inverter and the motor, the
thermal O/L relay may malfunction (particularly in the 460V series units), even when the cable length
is 165 feet (50m) or less. To correct this, insert a filter or reduce the PWM carrier frequency. (Use
function code “F26 Motor sound”.)

3. Auxiliary control-power input terminals (R0 and T0)

The inverter will operate even if power
is not provided to these terminals. If a
protective circuit is activated and the
magnetic contactor on the inverter
power input side is opened (off), the
inverter control circuit power, the alarm
output (30A, B, and C), and the keypad
display will lose power. To prevent this,
the same AC power as supplied to the
main input circuit must be supplied (as
auxiliary control power) to the auxiliary
control - power input terminals (R0 and
T0). (see Fig. 2-3-2)

a. To ensure effective noise reduction
when using an input noise filter, the
output from the filter must go to
the auxiliary control-power input
terminals. If these terminals are

connected to the input side of the filter, the noise reduction is much less effective.

Fig. 2-3-2 Connecting the Auxiliary Control-Power

Input Terminals

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TECO – Westinghouse Motor Company Power Terminal Designations & Wiring 12

EQ5 AC Drive Operations Manual

b. When the RCD (Residual-current Protective Device) is installed (30HP/CT, 40HP/VT or less), the
terminal R0

and T0 should be connected to the output side of the RCD. If they are connected to the input side,
the RCD will malfunction because the power supply of the inverter is three phase and the

R0 and T0 input is single phase. If it is required to connect terminals R0 and T0 are to the input side

of the RCD, an isolation transformer is required as shown on the Fig. 2-3-2.

4. Connecting a DC link choke to terminals (P1 and P (+))

a. Before connecting a DC link choke to these terminals, remove the
factory-installed jumper. (Fig. 2-3-3)
b. If a DC link choke is not used, do not remove the jumper.

Note: For inverters of 100HP or more, the DC link choke is provided

as separate standard component and should always be
connected. For inverters less than 100 HP, the DC link choke
is not provided and is optional.

4. Connecting an external braking-resistor to terminals (P (+) and DB) (10HP/CT, 15HP/VT or less)
(Fig. 2-3-4). For inverters 10HP/CT, 15HP/VT or less, a built-in braking resistor is connected to
terminals P (+) and DB. If this braking resistor does not provide sufficient thermal capacity (e.g.
high operating duty cycle or high inertia loads), an optional external braking resistor must be
installed to improve braking performance.

a. Remove the internal braking resistor from
terminals P(+) and DB and Insulate the
terminals with adhesive insulation tape, etc.
b. Connect terminals P(+) and DB of the external
braking resistor to terminals P(+) and DB of the
inverter.
c. The wiring (cables twisted or otherwise) should
not exceed 16ft (5m).

6. DC link circuit terminals (P (+) and N (-)) (Fig.2-3-5).
The EQ5 inverter of 15HP/CT, 20HP/VT or more
does not contain a drive circuit for the braking
resistor. To improve braking performance, an optional
external braking unit and external braking resistor
must be installed.

a. Connect terminals P and N of the braking unit to terminals P(+) and N(-) of the inverter.

The wiring (cables twisted or otherwise) should not exceed 16ft(5m).

b. Connect terminals P and DB of the braking resistor to terminals P and DB of the braking

unit. The wiring (cables twisted or otherwise) should not exceed 33ft (10m).

c. Connect terminals P and DB of the braking
resistor to terminals P and DB of the
braking unit. The wiring (cables twisted or
otherwise) should not exceed 33ft (10m).

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TECO – Westinghouse Motor Company Power Terminal Designations & Wiring 13

DC Link Choke

X

P(+)P1

Inverter

Fig. 2-3-3 Remove Jumper

Fig. 2-3-4 Connection (10HP/CT,

15HP/VT or less)

EQ5 AC Drive Operations Manual

DANGER- When terminals P (+) and N (-) of

the inverter are not used, leave terminals
open. If P(+) is connected to N (-) the bus
voltage will be shorted, or if braking resistor is
connected directly, the resistor can cause
fire.

d. Auxiliary contacts 1 and 2 of the braking

unit are polarity sensitive. To connect the

braking unit, refer to the "TECO Inverter

Speecon Braking Unit Manual”.

7. Inverter ground terminal
To ensure safety and noise reduction, always bond the inverter ground terminal. Also,
metal frames of electrical equipment must be grounded as specified in applicable codes
The connection procedure is as follows:

a. Ground all metal frames and chassis to a ground terminal (Ground resistance: 10).
b. In accordance with applicable codes, use a suitable ground cable to connect the inverter
system to ground.

Fig. 2-3-5 Connection (15HP or more)

8. Placement of connector (CN UX) for inverters 40HP/CT, 50HP/VT and higher.
When an inverter of 40HP or higher is connected to an input voltage listed in Table 2-3-2,
disconnect the auxiliary power connector CN UX from U1 and connect to U2.
(Refer to Fig. 2-3-7)

Table 2-3-2 Main Input Voltage Requiring Auxiliary Power Connector Change

Frequency [Hz] Input voltage range [VAC]

50 380 - 398
60 380 - 430

9. Placement of fan power connector (CN RXTX) for inverters 40HP/CT, 50HP/VT or higher.

An inverter of 40HP/CT, 50HP/VT or greater uses an AC cooling fan. When the inverter is being
operated with DC Input power, the fan must still be energized from an AC power
source. To do this, position the fan connector (CN RTXT) as shown in Fig. 2-3-9
and provide AC voltage to auxiliary input terminals R0 and T0. For the (CN RTXT)
connector placement method, see Fig. 2-3-7.

Note: When shipped, the fan connector (CN RXTX) is connected to L1/R-L3/T. Do not change the
connector position unless DC power is being used.

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TECO – Westinghouse Motor Company Power Terminal Designations & Wiring 14

EQ5 AC Drive Operations Manual

NOTES

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TECO – Westinghouse Motor Company Power Terminal Designations & Wiring 15

EQ5 AC Drive Operations Manual

The connectors are mounted on the power
PCB above the control PCB as shown on the
right.

Note:

To remove a connector, squeeze the locking
mechanism and pull. To mount a connector,
push the connector down until it locks (clicks).

EQ5-4040-C to EQ5-4200-C

EQ5-2040-C to EQ5-14150-C

<Enlarged view of part A>

When shipped from the factory, CN UX is connected to U1 and CN RXTX is connected to

L1/R-L3/T.

EQ5-4250-C to EQ5-4900-C

Fig. 2-3-7 (CN UX) and (CN RXTX) Connector Locations and Orientation

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TECO – Westinghouse Motor Company Power Terminal Designations & Wiring 16

EQ5 AC Drive Operations Manual

2-3-3 Connecting the Control Terminals

Table 2-3-3 lists the functions of the control circuit terminals. The connections to the control
terminals will be in accordance with its function setting.

Table 2-3-3 Control Terminal Functions

Classification

Analog input

Terminal

Symbol

13

Terminal Name Function

Potentiometer
power supply

12 Voltage input 1

V2 Voltage input 2

C1 Current input

11

Analog input
common

Supplies +10V DC to an externally connected frequency
control potentiometer (1 to 5k).
1- Sets the output frequency in accordance with an analog

input voltage applied from an external circuit.

- 0 to +10V DC / 0 to 100%

- Reversible operation using positive and negative
signals: 0 to +/-10V DC / 0 to +/-100%

- Reverse operation: +10 to 0V DC / 0 to 100%

2- Feedback signal for PID control.
3- Output torque control.
* Terminal Input resistance: 22k
Sets the output frequency in accordance with an analog
input voltage applied from an external circuit.

- 0 to +10V DC / 0 to 100%

- Reverse operation:+10 to 0V DC / 0 to 100%
* Terminals "V2" and "C1" cannot be used at the same time.
* Terminal Input resistance: 22k

1- Sets the output frequency in accordance with an analog

input current applied from an external circuit.

- 4 to 20mA DC / 0 to 100%

- Reverse operation: 20 to 4mA DC / 0 to 100%
2- Feedback signal for PID control.
3- PTC thermistor input.

PTC

13

ON

OFF

11k

1k

_

+

11k

250

C1

V2

11

* Terminals "V2" and "C1" cannot be used at the same time.
* Terminal Input resistance: 250
* PTC switch is off when function not used.

Common terminal for analog input and output signals

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TECO – Westinghouse Motor Company Control Terminal Designations & Wiring 17

EQ5 AC Drive Operations Manual

Digital input

FWD
REV

Forward operation /
stop command
Reverse operation /
stop command

Forward operation (when FWD-CM is on) or deceleration
and stop (when FWD-CM is open).
Reverse operation (when REV-CM is on) or deceleration

and stop (when REV-CM is open).
X1 Digital input 1 The coast-to-stop command, external alarm, alarm reset,
X2 Digital input 2
X3 Digital input 3
X4 Digital input 4
X5 Digital input 5
X6 Digital input 6
X7 Digital input 7
X8 Digital input 8
X9 Digital input 9

multi-step frequency selection, and other functions (from an

external circuit) can be assigned to terminals X1 to X9. For

details, see "Setting the Terminal Functions E01 to E09" in

Section 5.3 Function Explanation. <Specifications of digital

input circuit>

*

Item min. typ. max.

Operating voltage ON 2V - 2V

OFF 22V 24V 27V
Operating current
level

ON - 3.2mA 4.5mA
Leakage current OFF - - 0.5mA

+24V

PLC

FWD, REV

X1 – X9

6.8k

Analog output

CM

0V

CM Common terminal Common terminal for digital inputs ,FMP and P24.
P24

Control Unit power
Supply

PLC PLC signal power

+24VDC power supply for control input. Maximum output
current 100mA
Used to connect to a PLC power supply output 22 to 27
VDC, input signals set to sink logic operation.
Analog output DC voltage 0 to +10V DC.
The signal is selected to indicate one of the following:

-Output frequency (before slip compensation)

-Power consumption

-Output frequency (after slip compensation)

FMA
(11 Com)

Analog monitor

-PID feedback value

-Output current

-PG feedback value

-Output voltage

-DC link circuit voltage

-Output torque

-Load factor
*Minimum load resistance: 5k

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TECO – Westinghouse Motor Company Control Terminal Designations & Wiring 18

p

EQ5 AC Drive Operations Manual

Pulse output

Transistor

output

FMP
(CM Com)

Y1 Transistor out
Y2 Transistor output2

Y3 Transistor output3
Y4 Transistor output4

Frequency monitor
(pulse output)

ut1 A running signal, frequency equivalence signal, overload

Outputs a pulse frequency indicating the same as that of the
analog FMA signal.

early warning signal, and other signals from the inverter are
output (as a transistor output) to terminals Y1-Y4. For
details, see "Setting the Terminal Functions E20 to E23" in
Section 5.3 Function Explanation

Transistor output circuit specifications

Item min. typ. max.

Operating
voltage

Maximum load current ON - - 50mA
Leakage current OFF - - 0.1mA

ON - 2V 3V
OFF - 24V 27V

CME

30A,30B,
30C

Relay outputs

Y5A,Y5C

DX+, DX-

Communication

SD

(1) Analog input terminals (13,12,V2,C1,and 11)

a. These terminals receive analog signals that may be affected by external noise. The cables should be as short

as possible (66ft /20m or less), be shielded twisted cable, and must be properly grounded. If the cables are
affected by externally induced noise, the shielding effect may be improved by connecting the shield to terminal
[11]. (see Fig. 2-3-8)

b. If contacts are used to connect to these circuits, twin (bifurcated type) contacts for handling low level

signals must be used. A contact must not be connected to terminal [11].

c. If an external analog signal output device is connected to these terminals, it may malfunction as a

result of inverter noise. To prevent malfunction, connect a ferrite core or capacitor to the external analog
signal output device as shown in Fig. 2-3-9.

Transistor output
common

Alarm output for
any fault

Multipurpose-signal
relay output

RS485
Modbus RTU
communication
Communication­cable shield
connection terminal

Common terminal for transistor output signals
This terminal is insolated from terminals [CM] and [11].
If the inverter is stopped by an alarm (protective function),
the relay (SPDT) will activate.
Contact rating: 250 VAC, .03A - 48V DC, 0.5A
The activation mode can be selected for normal or alarm
operation.
The activation signals can be the same as the Y1 -Y4
outputs above.
The contact ratings are the same as that of the alarm output
above.

Terminals for RS485 communication (Modbus RTU). UP to
31 inverters can be connected using the daisy chain method.

Terminal for connecting the shield of the communication
cable. The terminal is electrically floating.

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TECO – Westinghouse Motor Company Control Terminal Designations & Wiring 19

EQ5 AC Drive Operations Manual

(2) Digital input terminals (FWD, REV, X1 to X9, and CM)

a. Digital input terminals FWD, REV and X1 to
X9 are generally turned on or off by switching
the input to (P24) +24V (source logic) or to
(CM) 0V (sink logic). If the digital input
terminals are turned on or off by a PLC with
open collector using an external power supply,
a resulting bypass circuit may cause the
inverter to malfunction. To prevent this, connect
the PLC terminal as shown in Fig. 2-3-10.
b. When using a dry contact input such as a
relay, highly reliable contacts capable of
handling low level signals must be used.

(3) Transistor output terminals (Y1 to Y4, CME)

a. Refer to the circuit configuration in Table 2-3-3 Transistor Output and confirm the polarity of the

external power supply.
b. When connecting a control relay to the transistor output, connect a transient absorbing diode
to both ends of the relays’ exciting coil.

(4) Sink or Source Logic selection
a. The slide switch SW1 located on the control board, sets the digital inputs for sink or source

input logic. The factory default is the sink position and is most commonly used in the US while
source logic is common in Europe.

b. For proper input digital connections, refer to the EQ 5 wiring diagram as well as other sections

covering this subject. Ensure that the correct position is selected for a particular application.

(5) Others

a. To prevent faulty operation as a result of noise, the control terminal cables should be placed as
far as possible from the main power cables.

b. The control cables inside the inverter must be secured to prevent direct contact with the main
power section, such as the power terminal block.

(6) Wiring of the control circuit (40HP/CT, 50HP/VT or greater)
a. Pull out the control circuit wiring along the left panel as shown in Fig. 2-3-11.
b. Secure the cable binding hole A on the left wall of the power terminal block using a cable tie.
Note: The cable tie should not exceed 0.14 ”(3.5mm) in width and 0.06” (1.5mm) in thickness.
c. When an optional PC card is mounted, the signal cables must be secured to cable binding
hole B.

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TECO – Westinghouse Motor Company Control Terminal Designations & Wiring 20

EQ5 AC Drive Operations Manual

NOTES

Fig. 2-3-11 Control Cable Routing and Securing for 40HP/CT, 50HP/VT and Greater

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TECO – Westinghouse Motor Company Control Terminal Designations & Wiring 21

EQ5 AC Drive Operations Manual

2-3-4 Input Protective Device Ratings.

Input

Voltage

230 VAC

460VAC

Input Fuse (AMPS)

HP Rating

(VT / CT)

0.25 / 0.25 3 3 3 15

0.5 / 0.5 5 6 3 15
1 / 1 10 15 3 20
2 / 2 15 20 3 30
3 / 3 20 30 3 40
5 / 5 35 50 3 60

7.5 / 5 60 80 3 100

10 / 7.5 70 125 3 125

15 / 10 100 150 3 175
20 / 15 125 200 3 225
25 / 20 150 225 3 250
30 / 25 175 250 3 300
30 / 30 175 250 3 300
40 / 30 200 * 5 200
50 / 40 225 * 5 225
60 / 50 300 * 5 300
75 / 60 350 * 5 350

100 / 75 300 * 5 300
125 / 100 400 * 5 400
150 / 125 450 * 5 450

0.5 / 0.5 3 3 3 15
1 / 1 5 6 3 15
2 / 2 10 10 3 15
3 / 3 15 15 3 20
5 / 5 20 25 3 35

7.5 / 5 30 45 3 50

10 / 7.5 40 60 3 70

15 / 10 50 90 3 90
20 / 15 70 110 3 110
25 / 20 80 125 3 150
30 / 25 100 125 3 175
30 / 30 100 125 3 175
40 / 30 100 * 10 100
50 / 40 125 * 10 125
60 / 50 175 * 10 175
75 / 60 150 * 10 150

100 / 75 175 * 10 175
125 / 100 200 * 10 200
150 / 125 225 * 10 225

200 /150 300 * 10 300
250 / 200 450 * 10 400
300 / 250 500 * 10 450
350 / 300 500 * 10 500
400 / 350 600 * 10 600
450 / 350 700 * 10 700
500 / 400 700 * 10 700
600 / 450 1000 * 10 1000
700 / 500 1000 * 10 1000
800 / 600 1200 * 10 1200

L1/R, L2/S &

L3/T

(Nominal)

L1/R, L2/S &

L3/T

(Maximum)

(Note 1)

Auxiliary

Input

R0 & T0

Input

Circuit

Breaker

(AMPS)

(Note 1)

Note 1 - Class J fuse or circuit breaker rated 600V with the maximum current rating as shown in the
above table to be connected to a drive 30HP/CT, 40HP/VT and less.

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TECO – Westinghouse Motor Company Input Protection Device Ratings 22

EQ5 AC Drive Operations Manual

2-3-5 EQ5 Terminal Tightening Torque and Cable Size

Terminal Tightening Torque

E (G)

119

(13.5)

119

(13.5)

239 (27)

(Note 4)

Circuit

P(+), N(-)

& DB

(Note 1)

31.0 (3.5)

119 (13.5)

31.0 (3.5)

51.3 ( 5.8)

119 (13.5)

239 (27)

(Note 2)

DB

R0

&

T0

10.6
(1.2)

10.6
(1.2)

L2/S &

Qty 2-1 3/0 4/0

Qty 2-2/0 Qty 2-3/0 Qty 2-4/0 6

Qty 2-1/0 Qty 2-1/0 Qty 2-1/0
Qty 2-3/0 Qty 2-3/0 Qty 2-4/0 6

Qty 2-350 Qty 2-400 Qt y2-500

HP

Rating

(CT / VT)

Input Voltage

0.25 / 0.25

0.5 / 0.5
1 / 1
2 / 2
3 / 3 14
5 / 5 10

5 / 7.5

7.5 / 10 6

230

VAC

460

VAC

2 - Consult Factory.
3 - Wire size from NEC tables 310-16. Copper wire rated 60°C for 100 Amps or less, 75°C for over 100 Amps in 30°C
Ambient, and 1.25 x drive rated Amps.
4 - Control terminals tightening torque, 6.2 (0.7)

10 / 15
15 / 20 3
20 / 25 2
25 / 30
30 / 30
30 / 40
40 / 50
50 / 60
60 / 75 Qty 2-2/0 4/0 Qty 2-1

75 / 100 Qty 2-3/0 Qty 2-1/0 Qty 2-2/0 8

100 / 120
125 / 150 Qty 2-4/0 Qty 2-4/0 Qty 2-250 4

0.5 / 0.5
1 / 1
2 / 2
3 / 3
5 / 5 14

5 / 7.5

7.5 / 10
10 / 15
15 / 20 8
20 / 25 6
25 / 30
30 / 30
30 / 40
40 / 50 1 2 2
50 / 60
60 / 75 3/0 2/0 2/0

75 / 100

100 / 125
125 / 150
150 / 200 Qty 2-1/0 Qty 2-2/0 Qty 2-3/0
200 / 250
250 / 300 Qty 2-4/0 Qt y2-250 Qty 2-300
300 / 350 Qty 2-250 Qty 2-300 Qty 2-350
350 / 400
350 / 450 Qty 2-500 Qty 2-500 Qt y2-700
400 / 500 Qty 2-350 Qty 2-400 Qty 2-500
450 / 600 Qty 2-500 Qty 2-500 Qty 2-700
500 / 700 Qty 2-600 Qty 2-600 Qty 2-800
600 / 800 Qty 2-700 Qty 2-750 Qty 2-1000

Notes 1 - Based on TWMC standard DB unit and DB resistor designs.

Ib – in (Nm)

L1/R,

L2/S,
L3/T, U,
V, W, P1

& P(+)

10.6 (1.2) 10.6 (1.2) -

20.8 (2.36) 20.8 (2.36)

31.0 (3.5)

51.3 ( 5.8)

119 (13.5)

239 (27)

425 (48) 239 (27)

10.6 (1.2) 10.6 (1.2) -

20.8 (2.36) 20.8 (2.36)

31.0 (3.5)

51.3 ( 5.8)

119 (13.5)

239 (27)

425 (48)

Cable Size AWG

L1/R,

U, V & W

L3/T

16 16

8
4

1

4/0 1/0 2/0

16 16

12
10

4

2 3 3

2/0 2 1

2/0 4/0 4/0
3/0 4/0 Qty 2-1 10

(Note 3)

DC

Reactor,

P1 &

P(+)

DB Cir.

P(+), N(-)

(Note 1)

(Note 2)

& DB

14

10

14

8

4

R0

&

T0

-

14

10

-

14

-

10

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TECO – Westinghouse Motor Company Terminal Tightening Torques & Wire Size 23

EQ5 AC Drive Operations Manual

2-3-6 DC Link Choke Wattage Loss

Fig. 2-3-12 DC Link Choke

Note: Please refer to Sec. 8- 3- 4 for dimensions an d weights.

Input

Voltage

230V

460V

Notes:

• EQ5 Drives rated 100 Hp and above are furnished with a DC link choke. This choke
must be installed between terminals P1 and P+ prior to applying power to the Drive.

• The weight of the DC Link Reactor is not included as part of weight referenced for the Drive.

• The DC Link choke is provided as open type and is separately mounted. Any enclosures are
to be provided by the user.

Hp Model No.

100/75 DCR2-75B 55
125/100 DCR2-90B 57
150/125 DCR2-110B 67

100/75 DCR4-75B 58
125/100 DCR4-90B 64
150/125 DCR4-110B 73
200/150 DCR4-132B 84
250/200 DCR4-160B 90
300/250 DCR4-200B 126
350/300 DCR4-220B 131
400/350 DCR4-280B 133
450/350 DCR4-280B 150
500/400 DCR4-355B 205
600/450 DCR4-400B 215
700/500 DCR4-450B 272
800/600 DCR4-500B 292

Loss

(Watts)

______________________________________________________________________

TECO – Westinghouse Motor Company DC Link Chokes 24

EQ5 AC Drive Operations Manual

3. Initial Operation

3-1 Inspection and Preparation Before Operation

Check the following before operation:

1. Check that all the electrical connections are
secure and correct. (Fig. 3-1-1)
In particular, check that the input power supply
is not connected to any of the U, V, and W
output terminals to the motor and that the
ground terminal is securely grounded.

2. Check for short-circuits and ground faults
between the terminals and powered–up
sections.

3. Check for loose terminals, connectors, or
screws.

4. Check that the motor is disconnected from
mechanical equipment.

5. Turn off all control switches before turning on
power to ensure that the inverter will not start
or operate abnormally at power-up.

6. Check the following after power-up:

a. No alarm message is displayed on the
digital operator (see Figure 3-1-2).
b. The fan inside the inverter is rotating. (For
drives 2HP or more)

DANGER

Be sure that all protective
covers are in place before
turning on the power. Never
remove the protective covers
while the power is applied to
the inverter. To ensure safety,
do not operate switches with
wet hands. Electric shock

may result

Input to Inverter

Input

Power

Fig. 3-1-1 Inverter Connections

Inverter

Output to Motor

3Ø Induction

Motor

JOG / NORMAL

RUN

3-2 Operation Method

There are various methods of operation. Select a method of operation according to the
application requirements and specifications; referring to Section 4-2, Digital Operator LCD
Screen Operating Structure, and Chapter 5, Explanation of Functions. Table 3-2-1 lists general
methods of operation.

3-3 Trial Run

Upon confirming that the initial start-up is normal (see Section 3-1), proceed with a trial run. The initial
operating mode (set at factory) is using the keypad panel with the motor disconnected from the
mechanical load.

______________________________________________________________________

TECO – Westinghouse Motor Company Initial Operation 25

REMOTE / LOCAL

Fig. 3-1-2

Display on Digital Operator at Power-up

EQ5 AC Drive Operations Manual

4. Power down the inverter and following safety
precautions, connect the motor. Power-up the
drive and repeat steps 1-3 and check the
following.
a. Is the direction of rotation correct?

b. Is the motor rotating smoothly with no
buz zi n g o r abnormal vibration ?

c. Is the acceleration and deceleration smooth?

Table 3-2-1 General Methods of Operation

Operation

mode

Operation
using
keypad

Operation
using
external
signal
terminals

Frequency

setting

Keys on digital
operator

Freq. setting
Pot (VR),
analog
voltage,
analog current.

5. If no abnormalities are detected, increase the frequency and check the above items again.

If the results of the trial run are normal, proceed to start a formal run.

Note - If an error is detected in the above procedure immediately stop the operation and attempt to

determine the cause by referring to Chapter 7, Troubleshooting.

DANGER

Since voltage is still applied to the main circuit terminals (L1/R, L2/S, L3/T), and auxiliary

control power terminals (R0, T0) even when the output from the inverter is terminated, do not
touch the terminals. The large capacitor(s) in the inverter are still charged after the power is
turned off and do not discharge immediately. Before touching any electric circuit, confirm that
the charge lamp is off or a multimeter verifies that the voltage at the P-N terminals is below 25
VDC.

NOTES

Operation
command

Switch
contact input
Terminals:
FWD-CM
and
REV-CM

______________________________________________________________________

TECO – Westinghouse Motor Company Initial Operation 26

EQ5 AC Drive Operations Manual

4. Digital Operator

The Digital Operator has various functions for inputting, controlling, and displaying operations such
as frequency setting, run/stop command, confirming and changing function data, confirming status,
and copying.
Please review and become familiar with each function before attempting to operate the drive.
The Digital Operator can be removed or inserted during inverter operation, however, if it is removed
during a keypad operation (e.g., run/stop, frequency setting), the inverter will stop and initiate an
alarm.

4-1 Appearance of Digital Operator

LED Monitor

4-digit 7-segment display used to display data such
as setting frequency, output frequency and alarm
code.

Auxiliary Information Indication for LED Monitor

Indicates selected units or multiple of the
monitored data shown on the LED monitor and is
displayed on the top line of the LCD monitor. The
 symbol indicates selected units or multiple
number. The symbol  indicates there is an upper
screen not currently displayed.

LCD Monitor

Used to display various items of information as
operation status and function data. An operation
guide message, which can be scrolled, is
displayed at the bottom of the LCD monitor. This
LCD monitor has a backlight feature which turns
on when the control power is applied or any
keypad key is pressed. It stays on approximately 5
minutes after the last key stroke.

Indication on LCD Monitor

Displays one of the following operation status:

:

:

:

:

FWD: Forward operation
REV: Reverse operation
STOP: Stop

Control Keys

(valid during digital operator operation)
Used for inverter run and stop

Operation Keys

Used for switching screens, data change,
frequency setting, etc. (Table 4-4-1)

:

:

Displays the selected operation mode:

REM: Terminal block
LOC: Keypad panel
COMM: Communication terminal

JOG: Jogging mode
The symbol  indicates there is a lower screen not
currently displayed.

Run LED

:

______________________________________________________________________

TECO – Westinghouse Motor Company Digital Operator Appearance & Key Functions 27

EQ5 AC Drive Operations Manual

Table 4-1-1 Functions of Operation Keys

Operation Key Main Function

Used to switch the current screen display to the menu screen or switch to the initial
display screen in the operation/trip mode.
Used to switch the LED monitor or to determine the entered frequency, function code,
or data.

Used to change data, move the cursor up or down, or scroll the display screen.
Used to move the cursor horizontally when changing data. When this key is pressed

with the up or down key, the cursor moves to the next parameter function block.
Used to cancel the current input data and switch the display screen. If an alarm occurs,
this key is used to reset the trip status (valid only when the alarm mode initial screen is

STOP

displayed).
Used to switch normal operation mode to jogging operation mode or vice versa. The

selected mode is displayed on the LCD screen.
Switches the operating mode from digital operator to terminal block operation (Local /

STOP

RESET

+

Remote), and vice versa. When these keys are operated, function F01 data is
automatically set to 3 if set at 0, or automatically set to 0 if set from 1 thru 4. The
selected mode is displayed on the LCD screen.

4-2 Digital Operator LCD Screen Operating Structure

4.2.1 Normal Operation

The Digital operator LCD operating structure.

FUNC
DATA

Screen for each

RESET RESET

function

FUNC
DATA

FUNC
DATA

Supplementary
Screen

Operating Mode

PRG

Program Menu

RESET

PRG

4.2.2 Alarm modes

If an alarm is activated, operation is changed from normal digital operator function to alarm mode

operation. The alarm mode screen appears and alarm information is displayed.

The program menu, function screens, and supplementary screens remain unchanged as durin g
normal operation, though the switching method from program menu to alarm mode is limited to

.

______________________________________________________________________

TECO – Westinghouse Motor Company Key Functions, LCD Screen Structure & Alarm Modes 28

EQ5 AC Drive Operations Manual

No.

1
2 Program

Level
Name

Operating

mode
menu

Table 4-2-1 Overview of Contents Displayed for Each Level

Content

This screen is for normal operation. Frequency setting by keypad panel and the LED display
switching are possible only when this screen is displayed.

No Menu name Outline

The code and name of the functions are displayed. Selecting a

1 DATA SET

2 DATA CHECK
3 OPR MNTR Can check the operating status of various data .

4 I/O CHECK
5 MAINTENANCE
6 LOAD FCTR
7 ALM INF

function displays a data setting screen for checking or modifying
data.
The code and name of the function is displayed. Select a function
to be displayed for checking data. Modifying data is possible by
selecting the DATA SET screen above.

Can check the status of analog and digital inputs and outputs of
the inverter and option cards.
Can check inverter status, life expectancy, communication error
status, and ROM version as maintenance information.
Can measure maximum and average current and average
breaking force in load rate measurement.
Can check the operating and input/output status for the last alarm
occurrence.

Screen for

3

each function
Supplement

4

screen

8

9 DATA COPY

The function screen selected on the program menu appears, hence completing the function.
Functions not completed (e.g., modifying function data, displaying alarm factors) on individual

function screens are displayed on the supplementary screen.

ALM CAUSE

______________________________________________________________________

TECO – Westinghouse Motor Company Alarm Mode Screen & Screen Level Displays 29

Places the function of one inverter in memory for copying to
another inverter.

EQ5 AC Drive Operations Manual

4-3 Digital Operator Keypad Navigation

4-3-1 Operation Mode
The LCD screen for normal inverter operation displays the inverter operating status and an
operation guide. A second screen is available which graphically displays the operating status
in the form of a bar graph. Switching between screens is possible by setting the value of parameter
E45 (=1 operation guide), (=2 bar graph).

1) Operation status (E45=0)

RUN

PRG

PRG MENU
LED SHIFT

F / D

2) Bar graph (E45=1)

Fout/Iout/TRQ

1) Output frequency control set by Digital operator (F01=0 or C30=0)

FWD

A
%

STOP

PRG

PRG MENU
LED SHIFT

F / D

Output frequency (maximum frequency at full scale)

Hz

Output current (200% of inverter rating at full-scale)
Torque calculation (200% of inverter rating at full-scale)

FWD

RUN

FWD

PRG MENU

PRG

LED SHIFT

F / D

2) Output frequency set by external source (F010)

FWD

RUN

PRG MENU

PRG

LED SHIFT

F / D

______________________________________________________________________

TECO – Westinghouse Motor Company LED Monitor Display & Program Menu Screen 30

< DIG. SET Hz >

0.00 ~ 60.00
STORE

F / D

< REMOTE REF >

LOCAL

12+V1

< DIG. SET Hz >

0.00 ~ 60.00
STORE

F / D

LOCAL

EQ5 AC Drive Operations Manual

E43

Setting

0

frequency
Setting

1

frequency
Setting

2

frequency

3 Output current Output current A

Output voltage

4

(specified value)
Synchronous

5

speed setting
value
Line speed

6

setting value
Load rotation

7

speed setting
value
Torque

8

calculation value
Power

9

consumption

10 PID setting value PID setting value

PID remote

11

setting value
PID feedback

12

value

When stopped While running

(E44 = 0) (E44 = 1)

Output frequency 1 (before slip
compensation)

Output frequency 2 (after slip compensation)
Setting frequency

Output voltage (specified value) V

Synchronous speed r/min.

Line speed m/min.

Load rotation speed r/min.

Torque calculation value %
Power consumption kW

PID remote setting value
PID feedback value

(E44 =0,1)

Units Remarks

Hz

−

−

−

For 4 digits or
more, the last
digits are cut,
with x10, x100
marked on the
indicator.

± indication

Displayed only
when the PID
function is
selected.

______________________________________________________________________

TECO – Westinghouse Motor Company LED Monitor Display & Program Menu Screen 31

EQ5 AC Drive Operations Manual

4-3-5 Setting the Parameter (function code) Value

On the program menu screen, select 1. DATA SET as in para. 4-3-3. The parameter select screen
appears. Select the desired parameter and set value as follows.

RUN

PRG

PRG MENU

F / D

The parameter designations (function codes) consist of alphanumeric characters with unique
alphabetical letters assigned to each parameter group as in table 4-3-1 below.

FWD

LED SHIFT

Table 4-3-1 Parameter Designations and Corresponding Groups

Parameter Group name Remarks

F00 - F42 Fundamental Functions
E01 - E47 Extension Terminal Functions

C01 - C33 Control Functions of Frequency

P01 - P09 Motor Parameters

H03 - H39 High Performance Functions

A01 - A18 Alternative Motor Parameters

U01 - U61 User Functions

o01 - o55 Optional Functions

Can be selected only with an
option connected.

______________________________________________________________________

TECO – Westinghouse Motor Company Setting Parameter Values 32

EQ5 AC Drive Operations Manual

Table 4-3-2

Display Reason for No Modification To Enable Data Change

LINK ACTIVE

NO SIGNAL(WE)

DATA PRTCTD

INV RUNNING

FWD/REV ON

Currently writing from RS-485/RTU
option to function is being made.

The edit enabling command
function is selected using a
general-purpose input terminal.
Data protection is selected by
parameter F00.
An attempt is made to change a
function that cannot be changed
during inverter operation.
An attempt is made to change a
function that cannot be changed
with the FWD / REV command on.

Send a cancel command to function
writing from RS-485/RTU. Stops a
“write” operation from the link.
For functions E01 to E09, turn data
terminal 19 (edit enabling
command selection) ON.
Change F00 to 0.

Stop inverter operation.

Turn FWD / REV command off.

4.3.6 Checking Parameter Values
Select 2. DATA CHECK on the program menu screen. The parameter select screen then appears

with the parameters and current values. (Note that an * will appear before the current value if it was
changed from the original value.)

RUN

PRG MENU

PRG

LED SHIFT

F / D

4.3.7 Monitoring Operating Status
Select 3. OPR MNTR on the program menu screen to display the current inverter operating status.

RUN

PRG MENU

PRG

LED SHIFT

F / D

FWD

FWD

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TECO – Westinghouse Motor Company Checking Parameter Values & Operating Status 33

EQ5 AC Drive Operations Manual

Input Status via Terminals

Y1
Y2
Y3
Y4

FWD

Y5

XX.XV
XX.XV

XX.XV

RUN

PRG MENU

PRG

LED SHIFT

F / D

Output Terminal Status

Analog Input Voltage Value

12 = + XX.XV
22 = +
32 = +
V2 = +

1.DATA SET

PRG

2.DATA CHECK

3.OPR MNTR

4.I/O CHECK

Terminal 12 Input
Terminal 22 Input (AIO Option)
Terminal 32 Input (AIO Option)
Terminal V2 Input

FUNC
DATA

REM

FWD
REV
X1

Input Status via Communication

COMM

FWD
REV
X1

Analog Input Current Value

C1 = XX.XmA
C2 = XX.XmA

X2
X3
X4
X5

X2
X3
X4
X5

X6
X7
X8
X9

X6
X7
X8
X9

Terminal C1 Input
Terminal C2 Input (AIO Option)

DIO Option I/O Status

AO = XX.XV
CS = XX.XmA
DI = XXXXH
DO = XXH

Analog Output (V) (AIO Option)
Analog Output (I) (AIO Option)
Digital Input Terminal (HEX)
Digital Output Terminal (HEX)

_______________________________________________________________________

TECO – Westinghouse Motor Company Checking I / O Status 34

Analog Output

FMA = XX.XV
FMP = XX.XV
FMP = XXXX0p/s

FMA Output Voltage
FMP Output Voltage
FMP Output Frequency

EQ5 AC Drive Operations Manual

RUN

PRG MENU

PRG

LED SHIFT

F / D

FWD

NOTES

_______________________________________________________________________

TECO – Westinghouse Motor Company Checking Maintenance Information 35

EQ5 AC Drive Operations Manual

Measuring Time

Set Measuring Time

(0 – 3600 sec.)

Ex.- Set for 600 sec.

RUN

PRG MENU

PRG

LED SHIFT

F / D

T= 150s
Imax = 0.00A
Iave = 0.00A
BPave = 0.0%

T= 3600s
Imax = 56.4A
Iave = 23.5A
BPave = 10.4%

FWD

Start Measuring

Displays remaining
measurement time.
When = 0 measurement
ends.

Time Returns to Initial Value
Maximum Current
Average Current
Average Braking Power

(Motor rated output /100%)

T= 3600s
Imax = 0.00A
Iave = 0.00A
BPave = 0.0%

Use these keys to
set measuring time

T= 600s
Imax = 0.00A
Iave = 0.00A
BPave = 0.0%

Measurements Displayed

NOTES

_______________________________________________________________________

TECO – Westinghouse Motor Company Load Rate Measurement 36

EQ5 AC Drive Operations Manual

RUN

PRG

F / D

FWD

PRG MENU
LED SHIFT

_______________________________________________________________________

TECO – Westinghouse Motor Company Alarm Information 37

EQ5 AC Drive Operations Manual

NOTES

RUN

PRG MENU

PRG

LED SHIFT

F / D

Alarm Code of
the selected
alarm

LOW SUP V
PWR FAILURE
EXCESS LOAD
PHASE LOSS

FWD

PRG

FUNC
DATA

Possible cause for
alarm occurrence
for the selected
alarm

5.MAINTENANCE

6.LOAD FCTR

7.ALM INF

8.ALM CAUSE

Display

Example: Latest alarm LU
is selected.

0 / 1= LU 1

FUNC
DATA

-1= ----- 0

-2= ----- 0

-3= ----- 0

Select an alarm
To be displayed

5= ----­ 4= ----­ 3= ----­ 2= -----

Latest Alarm
Alarm History

Simultaneously
occurring
alarms

_______________________________________________________________________

TECO – Westinghouse Motor Company Alarm History & Possible Causes 38

EQ5 AC Drive Operations Manual

Select Data Copy (DATA COPY) on the main menu screen. Press to access the
Data Copy (READ) screen. Press to read data from inverter 1. When complete,
remove the Digital Operator and attach to inverter 2. Power up and again select 9. Press
. On the Data Copy screen press to select (WRITE). Press . When
complete the data transfer done.

The (VERIFY) feature which is covered on the next page also mkes it possible to
compare and check differences in the data stored in the Digital Operator and the data
stored in the inverter.

RUN

PRG MENU

PRG

LED SHIFT

F / D

FWD

RUN

PRG MENU

PRG

LED SHIFT

F / D

FWD

_______________________________________________________________________

TECO – Westinghouse Motor Company Data Copy & Verify Function 39

EQ5 AC Drive Operations Manual

Error Processing

Verify Data

1. Data Change Disabled During Operation

If a write operation is attempted during a drive
operation, or vice versa, the error message
below will appear. After stopping the drive
and pressing retry the operation.

2. Memory Error

If a write operation is attempted while data has
not been saved (i.e. no data) in the Digital
Operator memory during the read mode or
when the drive types do not match, the
following error message will appear.

RESET

<DATA COPY>

30 HP-2

WRITE

INV RUNNING

<DATA COPY>

30 HP-2

WRITE

MEMORY ERROR

RUN

PRG

PRG MENU
LED SHIFT

F / D

PRG

6.LOAD FCTR

7.ALM INF

8.ALM CAUSE

9.DATA COPY

FUNC
DATA

<DATA COPY>

30 HP-2

FWD

READ

3. Verify Error

<DATA COPY>

30 HP-2

FUNC
DATA

<DATA COPY>

30 HP-2

COMPLETE

VERIFY

VERIFY

During a data check (Verify) operation, if the
data stored in the Digital Operator differs from
that stored in the drive, the following error
message is displayed to indicate the function
number. The data check stops at the first
mismatch. To continue the data check press

FUNC

until another mismatch is displayed or is

DATA

complete. To stop the data check and switch
to another operation, press .

<DATA COPY>

ERR-F25

RESET

30 HP-2

WRITE

_______________________________________________________________________

TECO – Westinghouse Motor Company Verify Data & Error Processing 40

EQ5 AC Drive Operations Manual

5. 5 No. 5 alarm

4. 4 No. 4 alarm

3. 3 No. 3 alarm

NOTES

2. 2 No. 2 alarm

1. 1 No. 1 alarm (more than two alarms have occurred.)

Blank 0 Latest alarm (only one alarm has occurred / alarm release)

Blank -1 Previous alarm history

Blank -2 Alarm history before previous alarm

Blank -3 Alarm history two times before previous alarm

_______________________________________________________________________

TECO – Westinghouse Motor Company Alarm Mode 41

EQ5 AC Drive Operations Manual

5. Parameters F,E,C,P,H, A and U

This section covers parameters F,E,C,P,H, A and U which can be set via the digital operator

(see Sect. 4) to achieve a specific performance for a particular application. For most general purpose
applications, the factory settings are sufficient and will not need to be changed. If the parameter
values are to be changed, it is recommended that resulting overall drive performance be evaluated to
avoid any unwanted performance issues.

5-1 Parameters Summary List
The following tables show the setting range, LCD readout, factory setting, and whether the value can
be changed while the drive is operational.

F Parameters

Factory setting

Para.

No.

F00 Data protection F00 DATA PRTC 0, 1 - - 0 N
F01 Frequency command 1 F01 FREQ CMD 1 0 to 11 - - 0 N
F02 Operation method F02 OPR METHOD 0 to 4 - - 0 N
F03 Maximum frequency 1 F03 MAX Hz-1 50 to 120Hz Hz 1 60 N
F04 Base frequency 1 F04 BASE Hz-1 25 to 120Hz Hz 1 60 N

F05 Rated voltage 1 (at Base frequency 1) F05 RATED V-1

F06 Maximum voltage 1 (at Maximum frequency 1) F06 MAX V-1
F07 Acceleration time 1 F07 ACC TIME1

F08 Deceleration time 1 F08 DEC TIME1
F09 Torque boost 1 F09 TRQ BOOST1 0.0, 0.1 to 20.0 - 0.1 0.1 Y
F10 Electronic (Select) F10 ELCTRN OL1 0, 1, 2 - - 1 Y
F11 thermal 1( Level) F11 OL LEVEL1 INV rated current 20 to 135% A 0.01 Motor rated current Y
F12 (Thermal time constant) F12 TIME CNST1 0.5 to 75.0 min min 0.1 5.0 10.0 N

Electronic thermal overload relay

F13

(for braking resistor)

F14 Restart mode after momentary power failure F14 RESTART 0 to 5 - - 0 N
F15 Frequency limiter (High) F15 H LIMITER
F16 (Low) F16 L LIMITER N
F17 Gain (for freq. set signal) F17 FREQ GAIN 0.0 to 200.0% % 0.1 100.0 Y
F18 Bias frequency F18 FREQ BIAS -120.0 to +120.0Hz Hz 0.1 0.0 Y
F20 DC brake (Starting freq.) F20 DC BRK Hz 0.0 to 60.0Hz Hz 0.1 0.0
F21 (Braking level) F21 DC BRK LVL 0 to 100% % 1 0
F22 (Braking time) F22 DC BRK t 0.0s (Inactive) s 0.1 0.0
F23 Starting frequency (Freq.) F23 START Hz 0.1 to 60.0Hz Hz 0.1 0.5
F24 (Holding time) F24 HOLDING t 0.0 to 10.0s s 0.1 0.0
F25 Stop frequency F25 STOP Hz 0.1 to 60.0Hz Hz 0.1 0.2 N
F26 Motor sound (Carrier freq.) F26 MTR SOUND 0.75 to 15kHz (Vary by HP) kHz 1 2
F27 (Sound tone) F27 SOUND TONE 0 to 3 - - 0
F30 FMA (Voltage adjust) F30 FMA V-ADJ 0 to 200% % 1 100
F31 (Function) F31 FMA FUN C 0 to 11 - - 0
F33 FMP (Pulse rate) F33 FMP PULSES 300 to 6000p/s (full scale) p/s 1 1440
F34 (Voltage adjust) F34 FMP V-ADJ 0%, 1 to 200% % 1 0
F35 (Function) F35 FMP FUNC 0 to 10 - - 0
F36 30RY operation mode F36 30RY MODE 0, 1 - - 0 Y
F40 Torque limiter 1 (Driving) F40 DRV TRQ 1 20 to 150%, 999 % 1 999
F41 (Braking) F41 BRK TRQ 1 0%, 20 to 150%, 999 999
F42 Torque vector control 1 F42 TRQVECTOR1 0, 1 - - 0 N

NAME LCD Display Setting range Unit

0V: (Output voltage proportional to
source voltage)
80 to 240V: (230V class)
320 to 480V: (460V class)
80 to 240V: (230V class)
320 to 480V: (460V class) 460:(460V class)

0.01 to 3600s s 0.01 6.0 20.0 Y

[Up to 10HP/CT, 15HP/VT]

F13 DBR OL

0, 2
[15HP/CT, 20HP/VT and above ]
0

0-120Hz Hz 1 70

Min.
Unit

V 1

V 1

- -

30HP/CT
40HP/VT

230:(230V class)
460:(460V class)

230:(230V class)

0

0

40HP/CT
50HP/VT

Change

User

During

Oper.

N

N

Y

Y

Y

N

Y

Y

Y

Y

Remark

Set value

_______________________________________________________________________

TECO – Westinghouse Motor Company Parameter List F00 – F42 42

EQ5 AC Drive Operations Manual

E Parameters

Factory setting

Para.

No.

E01 X1 terminal function E01 X1 FUNC
E02 X2 terminal function E02 X2 FUNC 1 N
E03 X3 terminal function E03 X3 FUNC 2 N
E04 X4 terminal function E04 X4 FUNC 3 N
E05 X5 terminal function E05 X5 FUNC 4 N
E06 X6 terminal function E06 X6 FUNC 5 N
E07 X7 terminal function E07 X7 FUNC 6 N
E08 X8 terminal function E08 X8 FUNC 7 N
E09 X9 terminal function E09 X9 FUNC 8 N
E10 Acceleration time 2 E10 ACC TIME2
E11 Deceleration time 2 E11 DEC TIME2 6.00 20.00 Y
E12 Acceleration time 3 E12 ACC TIME3 6.00 20.00 Y
E13 Deceleration time 3 E13 DEC TIME3 6.00 20.00 Y
E14 Acceleration time 4 E14 ACC TIME4 6.00 20.00 Y
E15 Deceleration time 4 E15 DEC TIME4 6.00 20.00 Y
E16 Torque limiter 2 (Driving) E16 DRV TRQ 2 20 to 150%, 999 % 1 999 Y
E17 (Braking) E17 BRK TRQ 2 0%, 20 to 150%, 999 % 1 999 Y
E20 Y1 terminal function E20 Y1 FUNC
E21 Y2 terminal function E21 Y2 FUNC 1 N
E22 Y3 terminal function E22 Y3 FUNC 2 N
E23 Y4 terminal function E23 Y4 FUNC 7 N
E24 Y5A, Y5C terminal func. E24 Y5 FUNC 10 N
E25 Y5 RY operation mode E25 Y5RY MODE 0,1 - 1 0 N
E30 FAR function (Hysteresis) E30 FAR HYSTR 0.0 to 10.0Hz Hz 0.1 2.5 Y
E31 FDT function (Level) E31 FDT1 LEVEL 0 to 120Hz Hz 1 60 Y
E32 Signal (Hysteresis) E32 FDT1 HYSTR 0.0 to 30.0Hz Hz 0.1 1.0 Y

E33 OL1 function(Mode select) E33 OL1 WARNING
E34 Signal (Level) E34 OL1 LEVEL 5 to 200% A 0.01 Motor rated current

E35 (Timer) E35 OL1 TIMER 0.0 to 60.0s s 0.1 10.0
E36 FDT2 function (Level) E36 FDT2 LEVEL 0 to120Hz Hz 1 60 Y
E37 OL2 function (Level) E37 OL2 LEVEL 5 to 200% A 0.01 Motor rated current Y
E40 Display coefficient A E40 COEF A -999.00 to 999.00 - 0.01 0.01 Y
E41 Display coefficient B E41 COEF B -999.00 to 999.00 - 0.01 0.00 Y
E42 LED Display filter E42 DISPLAY FL 0.0 to 5.0s s 0.1 0.5 Y
E43 LED Monitor (Function) E43 LED MNTR 0 to 12 - - 0 Y
E44 (Display at STOP mode) E44 LED MNTR2 0, 1 - - 0 Y
E45 LCD Monitor (Function) E45 LCD MNTR 0, 1 - - 0 Y
E46 (Language) E46 LANGUAGE 0 to 5 - - 1 Y
E47 (Contrast) E47 CONTRAST 0 (soft) to 10 (hard) - - 5 Y

NAME LCD Display Setting range Unit

0 to 35

0.01 to 3600s s 0.01

0 to 37

0: Thermal calculation
1: Output current

Min.

30HP/CT

Unit

40HP/VT

-

-

- -

- - 0 Y

40HP/CT
50HP/VT

0 N

6.00 20.00 Y

0 N

Change

During

Oper.

Y

User

Set value

Remark

C Parameters

Factory setting

30HP/CT
40HP/VT

0

0.00

40HP/CT
50HP/VT

Change

During

Oper.

Y

User

Set value

Remark

Para.

No.

C01
C02 (Jump freq. 2) C02 JUMP Hz 2 0

Jump frequency

C03 (Jump freq. 3) C03 JUMP Hz 3 0
C04 (Hysteresis) C04 JUMP HYSTR 0 to 30Hz Hz 1 3
C05
C06 (Freq. 2) C06 MULTI Hz-2 0.00
C07 (Freq. 3) C07 MULTI Hz-3 0.00
C08 (Freq. 4) C08 MULTI Hz-4 0.00
C09 (Freq. 5) C09 MULTI Hz-5 0.00

Multistep frequency

C10 (Freq. 6) C10 MULTI Hz-6 0.00

setting

C11 (Freq. 7) C11 MULTI Hz-7 0.00
C12 (Freq. 8) C12 MULTI Hz-8 0.00
C13 (Freq. 9) C13 MULTI Hz-9 0.00
C14 (Freq. 10) C14 MULTI Hz-10 0.00
C15 (Freq. 11) C15 MULTI Hz-11 0.00
C16 (Freq. 12) C16 MULTI Hz-12 0.00
C17 (Freq. 13) C17 MULTI Hz-13 0.00
C18 (Freq. 14) C18 MULTI Hz-14 0.00
C19 (Freq. 15) C19 MULTI Hz-15 0.00

NAME LCD Display Setting range Unit

(Jump freq. 1) C01 JUMP Hz 1

(Freq. 1) C05 MULTI Hz-1

0 to 120Hz Hz 1

0.00 to 120.00Hz

Min.
Unit

Hz 0.01

Cont.

_______________________________________________________________________

TECO – Westinghouse Motor Company Parameter List E01 – E47 & C01 – C19 43

EQ5 AC Drive Operations Manual

Factory setting

Para.

No.

C20 JOG frequency C20 JOG Hz 0.00 to 120.00Hz Hz 0.01 5.00 N
C21 PATT ERN (Mode select) C21 PATTERN 0,1,2 - - 0 N
C22 (Stage 1) C22 STAGE 1
C23 (Stage 2) C23 STAGE 2 0.00 F1
C24 (Stage 3) C24 STAGE 3 0.00 F1
C25 (Stage 4) C25 STAGE 4 0.00 F1
C26 (Stage 5) C26 STAGE 5 0.00 F1
C27 (Stage 6) C27 STAGE 6 0.00 F1
C28 (Stage 7) C28 STAGE 7 0.00 F1
C30 Frequency command 2 C30 FREQ CMD 2 0 to 11 - - 2 N
C31 Off s et adju st (terminal [12]) C31 BIAS 12 -100.0 to +100.0% % 0. 1 0.0 Y
C32 C32 GAIN 12 0.0 to +200.0% % 0.1 100.0 Y
C33 Analog setting signal filter C33 REF FILTER 0.00 to 5.00s s 0.01 0.05 Y

NAME LCD Display Setting range Unit

Operation time:0.00 to 6000s
F1 to F4 and R1 to R4

Min.

30HP/CT

Unit

40HP/VT

s

0.01

0.00 F1

40HP/CT
50HP/VT

Change

During

Oper.

Y

User

Remark

Set value

P01 Number of motor 1 poles P01 M1 POLES 2 to 14 - 2 4 N
P02

Motor 1 (Capacity)

P03 (Rated current) P03 M1-Ir 0.00 to 2000A A 0.01 Motor rated current N
P04 (Tuning) P04 M1 TUN1 0, 1, 2 - - 0 N
P05 (On-line Tuning) P05 M1 TUN2 0, 1 - - 0 N
P06 (No-load current) P06 M1-Io 0.00 to 2000A A 0.01 St andar d Rated Value N
P07 (%R1 setting) P07 M1-%R1 0.00 to 50.00% % 0.01 Standard Rated Value Y
P08 (%X setting) P08 M1-%X 0.00 to 50.00% % 0.01 Standard Rated Value Y
P09 Slip compensation control 1 P09 SLIP COMP1 0.00 to 15.00Hz Hz 0.01 0.00 Y

P02 M1-CAP

Up to 30[HP]: 0.01 to 60HP
40[HP] and above: 0.01 to 800HP

HP 0.01 Motor Capacit y N

H Parameters

P Parameters

H03 Data initializing H03 DATA INIT 0, 1 - - 0 N
H04 Auto-reset (Times) H04 AUTO-RESET 0, 1 to 10 times - 1 0 Y
H05 (Reset interval) H05 RESET INT 2 to 20s s 1 5 Y
H06 Fan stop operation H06 FAN STOP 0, 1 - - 0 Y
H07 ACC/DEC pattern (Mode select) H07 ACC PTN 0,1,2,3 - - 0 N
H08 Rev. phase sequence lock H08 REV LOCK 0, 1 - - 0 N
H09 Start mode H09 START MODE 0, 1, 2 - - 0 N
H10 Energy-saving operation H10 ENERG Y SAV 0, 1 - - 1 Y
H11 DEC mode H11 DEC MODE 0, 1 - - 0 Y
H12 Inst antaneous OC limiting H12 INST CL 0, 1 - - 1 N
H13 Auto-restart (Restart time) H13 RESTART t 0.1 to 10.0s s 0.1 0.1 N
H14 (Freq. fall rate) H14 FALL RATE 0.00 to 100.00Hz/s Hz/s 0.01 10.00 Y

H15 (Holding DC voltage) H15 HOLD V
H16 (OPR command selfhold time) H16 SELFHOLD t 0.0 to 30.0s, 999 s 0.1 999 N

H19 Active drive H19 AUT RED 0, 1 - - 0 Y
H20
H21 (Feedback signal) H21 FB SIGNAL 0, 1, 2, 3 - - 1 N
H22 (P-gain) H22 P-GAIN 0.01 to 10.00 times - 0.01 0.1 Y

PID control

H23 (I-gain) H23 I-GAIN 0.0 , 0.1 to 3600s s 0.1 0.0 Y
H24 (D-gain) H24 D-GAIN 0.00s , 0.01 to 10.0s s 0.01 0.00 Y
H25 (Feedback filter) H25 FB FILTER 0.0 to 60.0s s 0.1 0.5 Y
H26

PTC thermistor

H27 (Level) H27 PTC LEVEL 0.00 to 5.00V 1.60 Y
H30 Serial link (Funct ion select) H30 LINK FUNC 0, 1, 2, 3 - - 0 Y
H31 (Address) H31 ADDRESS 0 (broadcast), 1 to 247 - 1 1 N
H32 (Mode select on no response error) H32 MODE ON ER 0, 1, 2, 3 - - 0 Y
H33 (Timer) H33 TIMER 0.0 to 60.0s s 0.1 2.0 Y
H34 Modbus-RTU (Baud rate) H34 BAUD RATE 0, 1, 2, 3 - - 1 Y
H35 (Data length) H35 LENGTH 0 (8-bit fixed) - - 0 Y
H36 (Parity check) H36 PARITY 0, 1, 2 - - 0 Y
H37 (Stop bits) H37 STOP BITS 0(2bit), 1(1bit) - - 0 Y
H38 (No response error detection time) H38 NO RES t 0 (No detection), 1 to 60s s 1 0 Y
H39 (Response interval) H39 INTERVAL 0.00 to 1.00s s 0.01 0.01 Y

(Mode select) H20 PID MODE 0, 1, 2 - - 0 N

(Mode select) H26 PTC MODE 0, 1

3ph 230V class: 200 to 300V
3ph 460V class: 400 to 600V 460V class:470V

V 1

V 0.01

230V class:235V

0 Y

Y

_______________________________________________________________________

TECO – Westinghouse Motor Company Parameters C20 – C33, P01 – P09 & H03 – H39 44

EQ5 AC Drive Operations Manual

A Parameters

Factory setting

30HP/CT
40HP/VT

220: (230V class)

220:(230V class)

40HP/CT
50HP/VT

Change

During

Oper.

N

N

User

Set

value

Para.

No.

A01 Maximum frequency 2 A01 MAX Hz-2 50 to 120Hz Hz 1 60 N
A02 Base frequency 2 A02 BASE Hz-2 25 to 120Hz Hz 1 60 N

A03 Rated voltage 2 (at Base frequency 2 ) A03 RATED V-2

A04 Maximum voltag e 2 (at Base frequency 2) A04 M AX V-2
A05 Torque boost2 A05 TRQ BOOST2 0.0, 0.1 to 20.0 - - 0.1 Y

A06 Electronic thermal overload relay for motor 2 A06 ELCTRN OL2 0, 1, 2 - - 1 Y
A07 (Level) A07 OL LEVEL2 INV rated current 20%to135% A 0.01 Motor rated current Y
A08 (Thermal time constant) A08 TIME CNST2 0.5 to 75.0 min min 0.1 5.0 10.0 Y
A09 Torque vector control 2 A09 TRQVECTOR2 0, 1 - - 0 N
A10 Number of motor-2 poles A10 M2 POLES 2 to 14 poles poles 2 4 N

A11
A12 (Rated current) A12 M2-Ir 0.00 to 2000A A 0.01 Motor rat ed current N

A13 (Tuning) A13 M2 TUN1 0, 1, 2 - - 0 N

Motor 2

A14 (On-line Tuning) A14 M2 TUN2 0, 1 - - 0 N
A15 (No-load current) A15 M2-Io 0.00 to 2000A A 0.01 TWMC standard rated value N
A16 (%R1 setting) A16 M2-%R1 0.00 to 50.00% % 0.01 TWMC standard rated value Y
A17 (%X setting) A17 M2-%X 0.00 to 50.00% % 0.01 TWMC standard rated value Y
A18 (Slip compensation control 2) A18 SLIP COMP2 0.00 to 15.00Hz Hz 0.01 0.00 Y

NAME LCD Display Setting range Unit

0:

320 to 480V: (460V class)
80 to 240V: (230V class)
320 to 480V: (460V class) 380:(460V class)

(Capacity)

A11 M2-CAP

Up to 30HP:0.01 to 60HP
40HP and above:0.01to800HP

Min.
Unit

V 1

V 1

HP 0.01 Motor capacity N

U Parameters

U01 Maximum compensation frequency U01 USER 01 0 to 65535

during braking torque limit
U02 1st S-shape level at acceleration U02 USER 02 1 to 50% % 1 10 NA
U03 2nd S-shape level at acceleration U03 USER 03 1 to 50% % 1 10 NA
U04 1st S-shape level at deceleration U04 USER 04 1 to 50% % 1 10 NA
U05 2nd S-shape level at deceleration U05 USER 05 1 to 50% % 1 10 NA

Main DC link

U08

capacitor
U09 (Measured value) U09 USER 09 0 to 65535 - 1 0 A
U10 PC board capacitor powered on time U10 USER 10 0 to 65535h h 1 0 A
U11 Cooling fan operating time U11 USER 11 0 to 65535h h 1 0 A
U13 Magnetize curr ent vibration damping gain U13 USER 13 0 to 32767 - 1 819 410 A
U15 Slip compensation filter time constant U15 USER 15 0 to 32767 - 1 556 546 A
U23 In t egral gain of continuous operation U23 USER 23 0 to 65535

at power failure

U24 Propor tional gain of continuous U24 USER 24 0 to 65535

operation at power failure

U48 Input phase loss protection U48 USER 48 0, 1, 2

0 1

U49 RS-485 protocol selection U49 USER 49 0, 1 - - 1 NA

Braking-resistor function select(up to 30HP/CT,
U59

40HP/VT)

Manufacturer's function(40HP/CT, 50HP/VT or

more)
U60 Reg ener ation avoidance at deceleration U60 USER 60 0, 1

U61 Volt age detect offset and gain adjustment U61 USER 61 --30HP/CT, 40HP/VT：0 (Fixed.)

40HP/CT, 50HP/CT--：0, 1, 2

U89 Motor overload memory U89 USER 89 0.1 - - 1 A

retention

(Initial value) U08 USER 08 0 to 65535 - 1 xxxx A

U59 USER 59

00 to A8(HEX)

- 1

- 1

- 1

- -

- 1

- -

- -

75 A

1738 1000 A

1024 1000 A

-75HP 100HP- NA

00 NA

0 NA

0 A

NOTES

Remark

80 to 240V: (230V class) 380: (460V class)

_______________________________________________________________________

TECO – Westinghouse Motor Company Parameters A01 – A18 ~ U01 – U89 45

TECO–Westinghouse Motor Company Function Explanation 46

5-2 Function Explanation

Setting can be made so that a set value cannot be

changed by keypad panel operation.

Setting range 0 : The data can be changed.
1 : The data cannot be changed.

Setting procedure 

0 to 1: Press the and keys simultaneously

to change the value from 0 to 1, then press the
to validate the change.
1 to 0: Press the and keys simultaneously

to change the value from 1 to 0, then press the
key to validate the change.

This function selects the frequency

setting method.

0 : Setting by keypad panel operation ( key)
1 : Setting by voltage input (terminal 12 (0 to +10V)
+ terminal [V2](0 to +10V) )
2: Setting by current input (terminal C1 (4 to 20mA)).
3: Setting by voltage input + current input (terminal 12
+ terminal C1 ) (-10 to +10V + 4 to 20mA).
4: Reversible operation with polarity ( terminal 12
(-10 to +10V))
5: Reversible operation with polarity ( terminal 12
+[V2]+[V1](Option) (-10 to +10V))
6: Inverse mode operation
(terminal 12 +[V2] (+10V to 0 ))
7: Inverse mode operation
(terminal C1 (20 to 4mA))

8: Setting by UP/DOWN control mode 1

(initial value = 0) (Terminals UP and DOWN)
9: Setting by UP/DOWN control mode 2
(initial value =last final value)
(terminals UP and DOWN)

See the function explanation of E01 to E09 for details.

10: Setting by pattern operation

See the function explanation C21 to C28 for details.

11: Setting by digital input or pulse train

* Optional. For details, see the instruction manual on options.

Set value:1,3

Set value:4,5

-10 0 +10 [V]

- Maximum frequency

Maximum frequency

Frequency setting value

Analog input terminal
[12] , [V2]

Inverse operation
(set value::6)

Forward operation
(set value: 1, 3, 4, 5)

0 4 20 [mA]

Maximum frequency

0

Frequency setting value

Analog input terminal
[C1]

Inverse operation
(set value: 7)

Forward operation
(set value: 2)

This function sets the operation command input

method.

Setting range 0: Key pad operation
( keys).
Press the for forward operation.

Press the for reverse operation.
Press the for deceleration to a stop.

Input from terminals FWD and REV is ignored.
(LOCAL)
1: Terminal operation( key active)

2: Terminal operation( key inactive)
3: Terminal operation( key active) through

software.
4: Terminal operation( key inactive) through
software.
* - This function can only be changed when terminals FWD
and REV are open.

- REMOTE/LOCAL switching from the keypad panel
automatically changes the set value of this function.

- REMOTE/LOCAL can be changed by pressing the
key and key simultaneously.

Ｆ：

Fundamental function

F00

Data protection

F01

Frequency command 1

F02

Operation method

Related

functions:

E01 to E09

(Set value

17,18)

Forward / Inverse operation

Related

functions:

C21to C28





Related functions:

E01 to E09

(Set value 21)

F 0 0 D A T A P R T C

Related functions

E01 to E09

(Set values 19)

F 0 1 F R E Q C M D 1

Related functions

E01 to E09

(Set values 17, 18)

C30

F 0 2 O P R M E T H O D

Related functions:

E01 to E09

(Set value 21)

FUNC
DATA

FUNC
DATA





FWD

REV

STOP

STOP

STOP

FWD

REV

STOP

STOP

RESET

STOP

STOP

STOP

STOP

TECO–Westinghouse Motor Company Function Explanation 47

SS1

SS2

SS4

SS8

JOG

Hz2/PID

12

V1

C1

Hz2/Hz1

LE

V2

Option

PID control

H25

H24

H23

H22

H20

H21

F18

F17

C08

C07

C06

H30

C30

F01

C05

C33

 

+ + +

+

#1,#5

#8,#9

#6

#7

#3

#2

#1,#2,#3,#6,#7

#4

#0

Bias frequency

Frequency setting

Analog input filter

Frequency setting by keypad panel

Feedback filter

Feedback
selection

Differential

Integral

Proportional

Operation selection

Gain

Negative polarity

prevention

Multistep frequency

switching

Lower-limit frequency

Maximum frequency

Upper-limit frequency

Set

frequency

value

Multistep frequencies 1 to 15

Limit signal

Limiter processing

Jump frequency

JOG frequency

Set frequency value

by Link function

D/I or pulse train (optional)

UP/DOWN control

Inverse

Forward/
Reverse

operation

Inverse

UP

Pattern operation control

DOWN

C12

C11

C10

C09

C16

C15

C14

C13

C04

C03

F16

A01

F03

F15

C01

C02

C20

C19

C18

C17

Frequency setting signals

#11

#10

C24

C28

C27

C23

C26

C25

C22

IVS

Switching
command

C21

#5

+

+

C31

C32

Gain

Bias

Note: The numbers marked "#" means the setting value of each functions.

Frequency setting block diagram

TECO–Westinghouse Motor Company Function Explanation 48

This function sets the maximum output frequency for

motor 1.

This is a function for motor 1.

Setting range EQ5: 50 to 120Hz

Setting a value higher than the rated value of the device
to be driven may damage the motor or machine.
Match the rating of the device.

This function sets the maximum output frequency in the

constant-torque range of motor 1 or the output
frequency at the rated output voltage. Match the rating
of the motor.

This is a function for motor 1.

Setting range EQ5: 25 to 120Hz

Note: When the set value of base frequency 1 is higher
than that of maximum output frequency 1, the output
voltage does not increase to the rated voltage because
the maximum frequency limits the output frequency.

Output frequency

F06 Maximum
output voltage 1

Output

voltage

F05 Rated voltage 1

0

F04 Base
frequency 1

F03 Maximum
output frequency

Constant-torque range

This function sets the rated value of the voltage output

to motor 1. Note that a voltage greater than the supply
(input) voltage cannot be output.

This is a function for motor 1.

Setting range 230 V series: 0, 80 to 240V
460 V series: 0, 320 to 480V
Value 0 terminates operation of the voltage regulation
function, thereby resulting in the output of a voltage

proportional to the supply voltage.
Note: When the set value of rated voltage 1 exceeds
maximum output voltage 1, the output voltage does not
increase to the rated voltage because the maximum
output voltage limits the output voltage.

This function sets the maximum value of the voltage

output for motor 1. Note that a voltage higher than the

supply (input) voltage cannot be output.
This is a function for motor 1.

Setting range 230 V series: 80 to 240V

460 V series: 320 to 480V
Note: When the set value of rated voltage 1 (F05) to "0",
this function is invalid.

This function sets the acceleration time for the output

frequency from startup to maximum frequency and the
deceleration time from maximum frequency to operation
stop.

Setting range Acceleration time 1: 0.01 to 3,600 seconds
Deceleration time 1: 0.01 to 3,600 seconds

Set acceleration and deceleration times with respect to
maximum frequency. The relationship between the set
frequency value and acceleration/deceleration times is
as follows:

Set frequency = maximum frequency

The actual operation time matches the set value.

Output frequency

Acceleration time

Set frequency

Time

Deceleration time

Maximum frequency

Set frequency < maximum frequency

The actual operation time differs from the set value.
Acceleration(deceleration) operation time = set value x
(set frequency/maximum frequency)

Acceleration
operation time

Time

Set frequency

Deceleration time

Acceleration time

Deceleration
operation time

Output frequency

Maximum frequency

Note: If the set acceleration and deceleration times are
too short even though the resistance torque and moment
of inertia of the load are great, the torque limiting function
or stall prevention function becomes activated, thereby
prolonging the operation time beyond that stated above.

F04

Base frequency 1

F03

Maximum frequency 1

F05

Rated voltage 1

F06

Maximum voltage 1

F07

Acceleration time 1

F08

Deceleration time 1

STOP

FWD

STOP

FWD

F 0 3 M A X H z - 1

F 0 7 A C C T I M E 1 F 0 8 D E C T I M E 1 F 0 4 B A S E H z - 1 F 0 5 R A T E D V - 1 F 0 6 M A X V - 1

TECO–Westinghouse Motor Company Function Explanation 49

This is a function for motor 1. The following can be

selected:

-- Selection of load characteristics such as automatic
torque boost, square law reduction torque load,
proportional torque load, constant torque load.

-- Enhancement of torque (V/f characteristics), which is

lowered during low-speed operation. Insufficient
magnetic flux of the motor due to a voltage drop in the
low-frequency range can be compensated.

Setting range

Characteristics selected

0.0

Automatic torque boost characteristic
where the torque boost value of a constant
torque load (a linear change) is
automatically adjusted.
The motor tuning (P04 / A13) should be set
to "2" for this function is valid.

0.1 to 0.9

Square law reduction torque for fan and
pump loads.

1.0 to 1.9

Proportional torque for middle class loads
between square law reduction torque and
constant torque (linear change)

2.0 to 20.0

Constant torque (linear change)

Torque characteristics(30HP/CT, 40HP/VT or less)

<Square law reduction torque> <Proportional torque>

100%

Output frequency f

#0.1

#0.9

0

17%

Rated voltage 1

Output voltage V

17%

Output frequency f

100%

Base
frequency 1

#1.0

#1.9

0

Output voltage V

Rated voltage 1

Base
frequency 1

<Constant torque>

100%

Output frequency f

Base
frequency 1

#2.0

#20.0

0

23%

Rated voltage 1

Output voltage V

Torque characteristics(40HP or above)

<Square law reduction torque> <Proportional torque>

100%

Output frequency f

#0.1

#0.9

0

18%

Rated voltage 1

Output voltage V

18%

Output frequency f

100%

Base
frequency 1

#1.0

#1.9

0

Output voltage V

Rated voltage 1

Base
frequency 1

<Constant torque>

100%

Output frequency f

Base
frequency 1

#2.0

#20.0

0

10%

Rated voltage 1

Output voltage V

Note: As a large torque boost value creates overexcitation
in the low-speed range, continued operation may cause
motor to overheat. Check the characteristics of the driven
motor.

The electronic thermal O/L relay manages the output
frequency, output current, and operation time of the
inverter to prevent the motor from overheating when
150% of the set current value flows for the time set by
F12 (thermal time constant).

This is a function for motor 1.
This function specifies whether to operate the

electronic thermal O/L relay and selects the target
motor. When a general-purpose motor is selected,
the operation level is lowered in the low speed range
according to the cooling characteristics of the motor.

Set value 0: Inactive
1: Active (for general-purpose motor)
2: Active (for inverter motor)

This function sets the operation level (current value) of

the electronic thermal. Enter a value from 1 to 1.1
times the current rating value of the motor.

The set value "2" is set for the inverter motor because

there is no cooling effect decrease by the rotational
speed.

The setting range is 20 to 135% of the rated current of the
inverter.

Output frequency f0 (Hz)

Operation level current (%)

85

54

Fe x 0.33

Fe x 0.83

fe

0.2 to 22kW

30 to 45kW

90

95

100

69

When F10 = 2

(%)

(When F10 = 1)

(When F10 = 1)

Operation level current and output frequency

fe= fb (fb60Hz)
60Hz (fb60Hz)
fb:Base frequency

F10

Electric thermal O/L relay (Thermal time constant)

Electric thermal O/L relay (level)

Electric thermal O/L relay ( select)

F11

F12

F09

Torque boost 1

F 1 0 E L C T R N O L 1

F 1 1 O L L E V E L 1 F 0 9 T R Q B O O S T

1

0.25 to 30HP
(When F10 = 1)

40 to 60HP
(When F10 = 1)

TECO–Westinghouse Motor Company Function Explanation 50

Output frequency f0 (Hz)

Operation level current (%)

53

Fe x 0.33

Fe x 0.83

fe

100

110kW or above

(%)

Operation level current and output frequency

fe= fb (fb60Hz)
60Hz (fb60Hz)
fb:Base frequency

(When F10 = 1)

85

90

Output frequency f0 (Hz)

Operation level current (%)

53

Fe x 0.33

Fe x 0.83

fe

100

110kW or above

(%)

Operation level current and output frequency

fe= fb (fb60Hz)
60Hz (fb60Hz)
fb:Base frequency

(When F10 = 1)

85

90

The time from when 150% of the operation level

current flows continuously to when he electronic
thermal O/L relay activates can be set.
The setting range is 0.5 to 75.0 minutes (in 0.1
minute steps).

0

5

10

15

20

0 50 100 150 200

Operation time

（

min

）

F12=0.5

F12=10

F12=5

changed by F12

(output current/operation level current)
x 100(%)

Current-Operation time Characteristics

This function controls the frequent use and continuous
operating time of the braking resistor to prevent the
resistor from overheating.

Inverter capacity

Operation

EQ5:10HP/CT,
15HP/VT or less

0: Inactive
2: Active

(DB***-2C/4C external braking resistor)

EQ5: 15HP/CT,
20HP/VT or more

0: Inactive

When the setting value is selected to "2", the type of

braking resistor and connection circuit are set by U59.
The details are referred to the function : U59.

F 1 2 T I M E C N S T 1

Electric thermal O/L relay (for breaking resistor)

F13

F 1 3 D B R O L

Related functions:

U59

75HP to 125HP

150HP or above

TECO–Westinghouse Motor Company Function Explanation 51

This function selects operation if a momentary power failure occurs.

The function for detecting power failure and activating protective operation (i.e., alarm output, alarm display, inverter
output cutoff) for undervoltage can be selected. The automatic restart function (for automatically restarting a coasting
motor without stopping) when the supply voltage is recovered can also be selected.

When setting value is selected "2" or "3", both integration constant and the proportional constant during operation

ride-though can be adjusted by the function code : U23 and U24. The details are referred to the function code : U23 and
U24.

Setting range: 0 to 5
The following table lists the function details.

F14

Restart mode after momentary power failure

Set

value

Function name

Operation at power failure

Operation at power recovery

０

Inactive
(immediate inverter trip)

If undervoltage is detected, the drive will immediately trip and
an undervoltage fault (LU) is displayed. The drive output
stops and the motor will coast to a stop.

The drive operation is not automatic ally
restarted. Input a reset command and
operation command to restart operation.

１

Inactive
(inverter trip at recovery)

If undervoltage is detected, the drive output stops and the
motor will immediately coast to a stop. A drive fault is not
activated

An undervoltage fault (LU) is activated at
power recovery. Drive operation is not
automatically restarted. Input a reset
command to restart operation.

２

Inactive
(inverter trip after
deceleration to a stop at
power failure)

Note1

When the DC bus voltage reaches the continue operation
voltage level (H15), a controlled deceleration to a stop occurs.
The inverter collects the inertia energy of the load to maintain
the DC bus voltage and controls the motor until it stops, then
an undervoltage fault (LU) is activated.
The drive will automatically decrease the deceleration time if
necessary. If the amount of inertia energy from the load is
small, and the undervoltage level is achieved before the motor
stops, the undervoltage fault is immediately activated and the
motor will coast to a stop.

The drive operation is not automatically
restarted. Input a reset command and
operation command to restart operation.

３

Active
(operation ride through,
for high-inertia loads)

Note1

When the DC bus voltage reaches the continue operation
voltage level (H15), energy is collected from the inertia of the
load to maintain the DC bus voltage and extend the ride
through time. The drive will automatically adjust the
deceleration rate to maintain DC bus voltage level. If
undervoltage is detected, the protective function is not
activated, but drive output stops and the motor coast to a stop.

Operation is automatically restarted.
For power recovery during ride-through the
drive will accelerate directly to the original
frequency. If undervoltage is detected,
operation automatically restarts with the
frequency at the time that the undervoltage
is detected.

４

Active
(restart with the
frequency at power
failure)

Note1

If undervoltage is detected, the protective function is not
activated. The drive output stops and the motor will coast to a
stop.

Operation is automatically restarted with
the frequency at power failure.

５

Active
(restart with the start
frequency, for low-inertia
loads)

Note1

If undervoltage is detected, the protective function is not
activated, but output stops.

Operation is automatically restarted with
the frequency set by F23, "Starting
frequency."

Note1) When the function code H18(Torque control) is excluding "0" and Motor 1 is selected, the inverter will trip at power
recovery if function code F14 is set to between "2" and "5". This operation is same as F14 is set to "1".

Function codes H13 to H16 are provided to control a restarting operation after momentary power failure. These functions
should be understood and used. The pick-up (speed search) function can also be selected as a method of restarting when
power is recovered following a momentary failure. (For setting details, see function code H09.)
The pick-up function searches for the speed of the coasting motor to restart the motor without subjecting it to excessive shock.
In a high-inertia system, the reduction in motor speed is minimal even when the motor is coasting. A speed searching time is
required when the pick-up function is active. In such a case, the original frequency may be recovered sooner when the function
is inactive and the operation restarted with the frequency prior to the momentary power failure.
The pick-up function works in the range of 5 to 100 Hz. If the detected speed is outside this range, restart the motor using the
regular restart function.

WARNING

 Automatically restart could be provided at power recovered, if "Restart mode after

momentary power failure" is valid.

 The machine should be designed to human safety when restarting.

Otherwise accidents may result.

F 1 4 R E S T A R T

Related functions:

U23, U24

TECO–Westinghouse Motor Company Function Explanation 52

Set value : 0

Main circuit DC
voltage

Power failure

Under voltage

Power recovery

Time

Output
frequency

ON

ON

H15
Operation continuation level

LV trip

Set value : 1

Main circuit DC
voltage

Output
frequency

LV trip

Under voltage

Time

Set value : 2

Main circuit DC
voltage

Output
frequency

LV trip

ON

Time

Set value : 3

Power failure Power recovery

H15
Operation continuation level

Output
frequency

(motor speed)

Main circuit DC
voltage

LV trip
Output

Acceleration

Under voltage

Synchroni­ zation

ON

H13:Waiting time

Main circuit DC
voltage

Set value : 4

Output
frequency

(motor speed)

LV trip

Output

(terminals
Y1 to Y5)

Set value : 5

Main circuit DC
voltage

Under voltage

Output
frequency

(motor speed)

LV trip

Output

H13:Waiting time

(terminals
Y1 to Y5)

(terminals
Y1 to Y5)

Note : Dotted-dashed lines indicate motor speed.

TECO–Westinghouse Motor Company Function Explanation 53

This function sets the upper and lower limits for the

setting frequency .

Setting range EQ5: 0 to 120Hz

Upper limit value

Lower limit value

Lower limit value

Upper limit value

Set frequency

Set frequency

+ Maximum frequency

- Maximum frequency

+100%

-100%

※ The inverter output starts with the start frequency when

operation begins, and stops with the stop frequency
when operation ends.

※ If the upper limit value is less than the lower limit value,

the upper limit value overrides the lower limit value.

※ When lower limit value is set, the inverter operates with

lower limit value at operation command is "ON" even
frequency command is zero(0Hz).

This function sets the rate of the set frequency value

to analog input.

Operation follows the figure below.

4 20［mA］

-10 0 +10[V]

Set frequency value

Analog input
+10V terminal 12
20mA terminal C1

200%

100%

50%

+Maximum
frequency

-Maximum
frequency

This function adds a bias frequency to the set

frequency value to analog input.

Setting range EQ5: -120.0 to +120.0Hz

The operation follows the figure below.
When the bias frequency is higher than the maximum
frequency or lower than the - maximum frequency, it is
limited to the maximum or - maximum frequency.

4 20[mA]

-10 0 +10[V]

Set frequency value

Analog input
+10V terminal 12
20mA terminal C1

Bias frequency
(when positive)

Bias frequency
(when negative)

+Maximum
frequency

-Maximum
frequency

※ Reversible operation is valid if the function code

F01/C30 is set to "4" or "5" only.

※ This function is invalid if PID control is selected(H20 is

"1" or "2").

Starting frequency: This function sets the frequency

with which to start a DC injection brake to decelerate
the motor to a stop.

Setting range: 0 to 60Hz
Operation level: This function sets the output current

level when a DC injection brake is applied. Set a
percentage of inverter rated output current in 1% steps.

Setting range EQ5: 0 to 80%

Time: This function sets the time of a DC injection

brake operation.

Setting range 0.0: Inactive

0.1 to 30.0 seconds

CAUTION

Do not use the inverter brake function for
mechanical holding.

Injury may result.

F20

DC brake (starting frequency)

DC brake (Braking level)

DC brake (Braking time)

F21

F22

F18

Bias frequency

Frequency limiter (High)

F15

F16

Frequency limiter (Low)

F 1 8 F R E Q B I A S F 1 5 H L I M I T E R F 1 6 L L I M I T E R F 1 7 F R E Q G A I N F 2 0 D C B R K H z F 2 1 D C B R K L V L F 2 2 D C B R K t

F17

Gain

TECO–Westinghouse Motor Company Function Explanation 54

Holding time

Time

Forward rotation

Starting frequency

Stopping frequency

Output frequency

The starting frequency can be set to reserve the torque at
startup and can be sustained until the magnetic flux of the
motor is being established.
Frequency: This function sets the frequency at startup.

Setting range: 0.1 to 60Hz

Holding time: This function sets the holding time

during which the start frequency is sustained at startup.

Set values: 0.1 to 10.0 seconds

The holding time does not apply at the time of switching

between forward and reverse.

The holding time is not included in the acceleration time.
The holding time also applies when pattern operation

(C21) is selected. The holding time is included in the
timer value.

This function sets the frequency at stop.

Setting range: 0.0 to 60.0Hz

The operation does not start when the starting frequency
is less than the stopping frequency or when the setting
frequency is less than the stopping frequency.

This function adjusts the carrier frequency, correct

adjustment of which prevents resonance with the
machine system, reduces motor and inverter noise, and
also reduces leakage current from output circuit wiring.

Nominal applied motor

Setting range

EQ5

30HP/CT or less
40HP/VT or less

0.75 to 15kHz

40HP/CT to 100HP/CT
50HP/VT to 125HP/VT

0.75 to 10kHz

125HP/CT or more
150HP/VT or more

0.75 to 6kHz
Carrier frequency

Low High

Motor noise

High Low

Output current waveform

Bad Good

Leakage current

Small amount Large amount

Noise occurrence

Extremely low High

The tone of motor noise can be altered when the carrier

frequency is 7kHz or lower. Use this function as
required.

Setting range: 0 , 1, 2 , 3

Monitor data (e.g.,output frequency, output current) can
be output to terminal FMA as a DC voltage. The amplitude
of the output can also be adjusted.
This function adjusts the voltage value of the monitor

item selected in F31 when the monitor amount is 100%.
A value from 0 to 200 (%) can be set in 1% steps.

Setting range: 0 to 200%

This function selects the monitor item to be output to

terminal FMA.

Set

value

Monitor item

Definition of 100% monitor amount

0

Output frequency 1
(before slip compensation)

Maximum output frequency

1

Output frequency 2
(after slip compensation)

Maximum output frequency

2

Output current

Rated output current of
inverter x 2

3

Output voltage

230V series: 250V
460V series: 500V

4

Output torque

Rated torque of motor x 2

5

Load rate

Rated load of motor x 2

6

Power consumption

Rated output of inverter x 2

7

PID feedback amount

Feedback amount of 100%

8

PG feedback amount
(only when option is installed)

Synchronous speed at
maximum frequency

9

DC link circuit voltage

230V series: 500V
460V series: 1,000V

10

Universal AO

0 to 10V output through
communication and not related to
inverter operation.

※The power consumption shows "0" during regenerative load.

F30:200%

Higher than 10V

F30:0%

F30:50%

5V

10V

F30:100%

100%

50%

FMA terminal output

voltage

F23

F24

Starting frequency (frequency)

Start frequency (Holding time)

F25

Stop frequency

F30

FMA (voltage adjust)

FMA (function)

F31

F26

Motor sound (carrier frequency)

F27

Motor sound (sound tone)

Notes:

1. Reducing the set value adversely affects the output current
waveform (i.e., higher harmonics), increases motor loss, and
raises motor temperature. For example, at 0.75 kHz, reduce
the motor torque by about15%.

2 Increasing the set value increases inverter loss and increases

the inverter temperature.

F 2 3 S T A R T H z F 2 4 H O L D I N G t F 2 5 S T O P H z F 2 6 M T R S O U N D F 2 7 M T R T O N E F 3 0 F M A V - A D J F 3 1 F M A F U N C

TECO–Westinghouse Motor Company Function Explanation 55

Monitor data (e.g.,output frequency, output current) can
be output to terminal FMP as pulse voltage. Monitor
data can also be sent to an analog meter as average
voltage.
When sending data to a digital counter or other instrument
as pulse output, set the pulse rate in F33 to any value and
the voltage in F34 to 0%.
When data is sent to an analog meter or other instrument
as average voltage, the voltage value set in F34
determines the average voltage and the pulse rate in F33
is fixed to 2670 (p/s).

This function sets the pulse frequency of the monitor

item selected in F35 within a range of 300 to 6000 (p/s)
in 1 p/s steps.

Setting range: 300 to 6,000 p/s

Pulse frequency (p/s) = 1/T
Duty (%) = T1/T x 100
Average voltage (V) = 15.6 x T1/T

The output terminal of the FMP terminal is composed of
the transistor, therefore there is a saturation voltage
(0.5V

MAX

). When using in the analogue by the filter
processing the pulse voltage, it should be make a 0V
adjustment by external equipment.

This function sets the average voltage of pulse output to

terminal FMP.

Setting range

0%: The pulse rate varies depending on the

monitor amount of the monitor item
selected in F35. (The maximum value is
the value set in F33. The pulse duty is fixed
at 50%.)

1 to 200%: Pulse rate is fixed at 2,670 p/s. The

average voltage of the monitor item
selected in F35 when the monitor amount is
100% is adjusted in the 1 to 200% range
(1% steps).

(The pulse duty varies.)

This function selects the monitor item to be output to

terminal FMP.

The set value and monitor items are the same as those
of F31.

This function specifies whether to activate (excite) the

alarm output relay (30Ry) for any fault at normal or
alarm status.

Set

value

Operation

0

At normal 30A - 30C: OFF, 30B - 30C: ON
At alarm condition 30A - 30C: ON, 30B - 30C:OFF

1

At normal 30A - 30C:ON, 30B - 30C: OFF
At alarm condition 30A - 30C: OFF, 30B - 30C: ON

When the set value is 1, contacts 30A and 30C are

connected when the inverter control voltage is
established (about one second after power on).

When the power is off, contacts 30A and 30C are OFF;

30B and 30C are ON.

30A

30B

30C

30

The torque limit operation calculates motor torque from

the output voltage, current and the primary resistance
value of the motor, and controls the frequency so the
calculated value does not exceed the limit. This
operation enables the inverter to continue operation
under the limit even if a sudden change in load torque
occurs.

Select limit values for the driving torque and braking

torque.

When this function is activated, acceleration and

deceleration operation times are longer than the set
values.

The motor tuning (P04 / A13) should be set to "2" for

this function is valid.

The increase frequency upper bound during torque limit

operation is set by function code : U01.

When the setting value is selected "0" (prevent OU trip),

the operation mode is selected by function code : U60.

The details are referred to the functions: U01, U60.

Function

Setting range

Operation

Torque

limit

(driving)

EQ5:20% to 150%

The torque is limited to the set
value.
999

Torque limiting inactive

Torque

limit

(braking)

EQ5:20% to 150%

The torque is limited to the set
value.

0 Prevents OU trip due to
power regeneration effect
automatically.

999

Torque limiting inactive

About 15.6V

T

Pulse cycle time

T1

F33

FMP (pulse rate)

FMP (voltage adjust)

F34

FMP terminal (function)

F35

F40

Torque limiter 1 (driving)

F41

Torque limiter 1 (braking)

F36

30Ry operation mode

F 3 3 F M P P U L S E S F 3 4 F M P V - A D J F 3 5 F M P F U N C F 3 6 3 0 R Y M O D E F 4 0 D R V T R Q 1 F 4 1 B R K T R Q 1

0V

VL:0.5V

MAX

Related functions:

U01, U60

TECO–Westinghouse Motor Company Function Explanation 56

WARNING

When the torque limit function is selected, an operation
may not match the set acceleration and deceleration time
or set speed. The machine should be so designed that
safety is ensured even when operation does not match
set values.

Otherwise accidents may result.

WARNING

The frequency may be stagnated / held constant when
using the automatically OU trip prevention and set the
frequency limit(Low) to the setting frequency or less.
Otherwise accidents may result.

This is a function for motor 1.
To obtain the motor torque most efficiently, the torque

vector control calculates torque according to load, to
adjust the voltage and current vectors to optimum
values based on the calculated value.

Set value

Operation

0

Inactive

1

Active

When 1 (Active) is set, the set values of the following

functions differ from the written values:
 F09 Torque boost 1
Automatically set to 0.0 (automatic torque boosting).
 P09 Slip compensation amount Slip compensation is

automatically activated.
When 0.0 is set, the amount of slip compensation for
the TWMC standard 3-phase motor is applied.
Otherwise, the written value is applied.

Use the torque vector control function under the

following conditions:
 There must be only one motor.

Connection of two or more motors makes accurate
control difficult.

The function data (rated current P03, no-load current

P06, %R1 P07, and %X P08) of motor 1 must be
correct.

When the standard TWMC 3-phase motor is used,

setting the capacity (function P02) ensures entry of the
above data. An auto tuning operation should be
performed for other motors.

The rated current of the motor must not be significantly

less than the rated current of the inverter. A motor two
ratings lower in capacity than the nominal applied motor
for the inverter should be used at the minimum
(depending on the model).

To prevent leakage current and ensure accurate control,

the length of the cable between the inverter and motor
should not exceed 164ft(50m).

When a reactor is connected between the inverter and

the motor and the impedance of the wiring cannot be
disregarded, use P04, "Auto tuning," to rewrite data.

If these conditions are not satisfied, set 0 (Inactive).

F 4 2 T R Q V E C T O R 1

Related functions:

P01, P09

F42

Torque vector control 1

TECO–Westinghouse Motor Company Function Explanation 57

ON

ON

ON

ON

ON

ON

FWD

REV

HLD

Output

frequency

Forward
rotation

Reverse
rotation

Ignore

Each function of digital input terminals X1 to X9 can be

set as codes.

Set value

Function

0,1,2,3

Multistep frequency selection (1 to 15 steps) [SS1],[SS2],[SS4],[SS8]

4,5

Acceleration and deceleration time selection (3 steps) [RT1],[RT2]

6

Self-hold selection [HLD]

7

Coast-to-stop command [BX]

8

Alarm reset [RST]

9

External alarm [THR]

10

Jogging [JOG]

11

Frequency setting 2/frequency setting 1 [Hz2/Hz1]

12

Motor 2/motor 1 [M2/M1]

13

DC injection brake command [DCBRK]

14

Torque limit 2/torque limit 1 [TL2/TL1]

15

Switching operation from line to inverter (50Hz) [SW50]

16

Switching operation from line to inverter (60Hz) [SW60]

17

UP command [UP]

18

DOWN command [DOWN]

19

Edit permission command (data change permission) [WE-KP]

20

PID control cancellation [Hz/PID]

21

Forward/inverse switching (terminals 12 and C1) [IVS]

22

Interlock (52-2) [IL]

24

Link operation selection (Standard:RS-485, Option: BUS) [LE]

25

Universal DI [U-DI]

26

Start characteristics selection [STM]

30

Forced stop command [STOP1]

31

Forced stop command with Deceleration time 4 [STOP2]

35

Frequency setting 1 / Frequency setting 2 [Hz1/Hz2]

Note: Data numbers which are not set in the functions

from E01 to E09, are assumed to be inactive.

The frequency can be switched to a preset frequency in
function codes C05 to C19 by switching the external digital
input signal. Assign values 0 to 3 to the target digital input
terminal. The combination of input signals determines the
selected frequency.

Combination of set
value input signals

Frequency selected

3

[SS8] 2 [SS4] 1 [SS2] 0 [SS1]

off

off

off

off

Assigned by F01 or C30

off

off

off

on

C05 MULTI Hz-1

Setting range
EQ5:0.00 to 120.00Hz

off

off

on

off

C06 MULTI Hz-2

off

off

on

on

C07 MULTI Hz-3

off

on

off

off

C08 MULTI Hz-4

off

on

off

on

C09 MULTI Hz-5

off

on

on

off

C10 MULTI Hz-6

off

on

on

on

C11 MULTI Hz-7

on

off

off

off

C12 MULTI Hz-8

on

off

off

on

C13 MULTI Hz-9

on

off

on

off

C14 MULTI Hz-10

on

off

on

on

C15 MULTI Hz-11

on

on

off

off

C16 MULTI Hz-12

on

on

off

on

C17 MULTI Hz-13

on

on

on

off

C18 MULTI Hz-14

on

on

on

on

C19 MULTI Hz-15

The acceleration and deceleration time can be switched to
a preset time in function codes E10 to E15 by switching the
external digital input signal. Assign values 4 and 5 to the
target digital input terminal. The combination of input
signals determines the acceleration and deceleration times.

Combination of
set value input
signals

Acceleration and deceleration times selected

5

[RT2] 4 [RT1]

off

off

F07 ACC TIME1
F08 DEC TIME1

Setting range

0.01 to 3600s

off

on

E10 ACC TIME2
E11 DEC TIME2

on

off

E12 ACC TIME3
E13 DEC TIME3

on

on

E14 ACC TIME4
E15 DEC TIME4

This selection is used for 3-wire operation. The FWD or
REV signal is self-held when [HLD] is on, and the self-hold
is cleared when [HLD] is turned off. To use this [HLD]
terminal function, assign 6 to the target digital input
terminal.

E 0 1 X 1 F U N C E 0 2 X 2 F U N C E 0 3 X 3 F U N C E 0 4 X 4 F U N C E 0 5 X 5 F U N C E 0 6 X 6 F U N C E 0 7 X 7 F U N C E 0 8 X 8 F U N C E 0 9 X 9 F U N C

E: Extension Terminal Functions

E01

X1 Terminal function

E09

X9 Terminal function

～ ～

Multistep frequency selection [SS1][SS2][SS4][SS8]

Acceleration and deceleration time selection [RT1][RT2]

Related function

C05 to C19

Related function

F07～F08
E10～E15

3-wire operation stop command [HLD]

TECO–Westinghouse Motor Company Function Explanation 58

When BX and P24 are connected, inverter output is cut off
immediately and the motor starts to coast-to-stop. An
alarm signal is neither output nor self-held. If BX and
P24 are disconnected when the operation command
(FWD or REV) is on, operation starts at the start
frequency. To use this BX terminal function, assign value
"7" to the target digital input terminal.

When an inverter trip occurs, connecting RST and P24
clears the alarm output (for any fault) ; disconnecting
them clears trip indication and restarts operation. To
use this RST terminal function, assign value "8" to the
target digital input terminal.

Disconnecting THR and P24 during operation cuts off
inverter output (i.e., motor starts to coast-to-stop) and
outputs alarm OH2, which is self-held internally and
cleared by RST input. This function is used to protect an
external brake resistor and other components from
overheating. To use this THR terminal function, assign
value "9" to the target digital input terminal. ON input is
assumed when this terminal function is not set.

This function is used for jogging (inching) operation to
position a work piece. When JOG and P24 are
connected, the operation is performed with the jogging
frequency set in function code C20 while the operation
command (FWD-P24 or REV-P24) is on. To use this
JOG terminal function, assign value "10" to the target
digital input terminal.
Note: It is possible to change to the JOG operation by

keypad panel when keypad panel operation.

WARNING

- When the JOG command and operation command
(FWD/REV) are input at the same time, the inverter can
NOT be changed to the JOG operation and will operate at
set frequency.

- When the JOG operation is used, the operation
command should be input after the JOG command input
while the inverter is STOPPED.

- When the JOG command and operation command are
input at the same time, the JOG command is assigned to
the "Multistep frequency selection (SS1 to SS8)".

- The inverter can NOT be stopped and JOG operation
will continue even if JOG command is OFF during JOG
operation. The inverter will decelerate to a stop if the
operation command is switched OFF.

Accidents may result.

This function switches the frequency setting method set in
function codes F01 and C30 by an external digital input
signal.

Set value input signal

Frequency setting method selected

11

off

F01 FREQ CMD1

on

C30 FREQ CMD2

Note: It can not be used with set value "35"
simultaneously. When the set value "11" and "35" are
selected, "Er6" is displayed.

This function switches motor constants using an external
digital input signal.
This input is effective only when the operation command
to the inverter is off, operation has stopped, and does not
apply to the operation at 0Hz.

Set value input signal

Motor selected

12
off

Motor 1

on

Motor 2

When the external digital input signal is on, DC injection
braking starts when the inverter's output frequency drops
below the frequency preset in function code F20 after the
operation command goes off. (The operation command
goes off when the key is pressed at keypad panel
operation and when both terminals FWD and REV go on
or off at terminal block operation.) The DC injection
braking continues while the digital input signal is on. In
this case, the longer time of the following is selected:

- The time set in function code F22.

- The time which the input signal is set on.

Set value input signal

Operation selected

13

off

No DC injection brake command is given.

on

A DC injection brake command is given.

Forward
rotation

ON

ON

ON

ON

ON

FWD

REV

BX

Output
Frequency

Ignored

Forward
rotation

Forward
rotation

ON

Operation
command
(FWD/REV)

Operation
mode

JOG
Input

O F F

JO G

O P R .

O F F

STOP

RUN

STOP

ON

RUN

JO G

O P R .

ON

O F F

O F F

STOP

ON

RUN

O F F

STOP

N O R .
O P R .

N O R .
O P R .

ON

RUN

ON

Coast-to-stop command [BX]

External fault [THR]

Jogging operation[JOG]

Motor 2/motor 1 [M1/M2]

DC brake command [DCBRK]

Related function

A01～A18

Alarm reset [RST]

Frequency setting 2/frequency setting 1 [Hz1/Hz2]

STOP

TECO–Westinghouse Motor Company Function Explanation 59

This function switches the torque limit value set in
function codes F40 and F41, and E16 and E17 by an
external digital input signal.

Set value input signal

Torque limit
value selected

14

off

F40 DRV TRQ1
F41 BRK TRQ1

Setting range
DRV 20 to 200% ,999
BRK 0, 20 to 200% ,999

on

E16 DRV TRQ2
E17 BRK TRQ2

Motor operation can be switched from 50Hz commercial
power operation to inverter operation without stopping the
motor by switching the external digital input signal.

Set value
input signal

Function

15

offon

Inverter operation to line operation (50Hz)

onoff

Line operation to inverter operation (50Hz)

Motor operation can be switched from 60Hz commercial
power operation to inverter operation without stopping the
motor by switching the external digital input signal.

Set value
input signal

Function

16

offon

Inverter operation to line operation (60Hz)

onoff

Line operation to inverter operation (60Hz)

When the digital input signal goes off, 50 or 60 Hz is

output according to the set value input signal after the
restart waiting time following a momentary power failure
(function code H13). The motor is then directed to
inverter operation.

WARNING

- After the LU(Low Voltage) trip is occurred and reset,
the inverter will automatically restart because the
operation command is kept by internal sequence.
Accidents may result.

When an operation command is input (on), the output
frequency can be increased or decreased by an external
digital input signal.
The change ranges from 0 to maximum frequency.
Operation in the opposite direction of the operation
command is not allowed.

Combination of set
value input signals

Function selected

(when operation command is on)

18

17

off

off

Holds the output frequency.

off

on

Increases the output frequency
according to the acceleration time.

on

off

Decreases the output frequency
according to the deceleration time.

on

on

Holds the output frequency.

There are the two types of UP/DOWN operations as
shown below. Set the desired type by setting the
frequency (F01 or C30).

The data "8: UP/DOWN 1" is valid only when the Motor

2 is selected.

Frequency

setting

(F01 or C30)

Initial value

at power

input on

Operation command reentry

during deceleration

8

(UP/DOWN1)

0Hz

Operates at the frequency at reentry.
Frequency

FWD ON
(REV) OFF

9

(UP/DOWN2)

Previous

frequency

Returns to the frequency before
deceleration

Frequency

FWD ON
(REV) OFF

This function allows the data to be changed only when an
external signal is being input, thereby making it difficult to
change the data.

19

Function selected

off

Inhibit data changes.

on

Allow data changes.

Note:
If a terminal is set to value 19, the data becomes unable
to be changed. To change the data, turn on the terminal
and change the terminal setting to another number.

The PID control can be disabled by an external digital
input signal.

Set value
input signal

Function selected

20

off

Enable PID control.

on

Disable PID control

(frequency setting from keypad panel).

UP command [UP]/DOWN command [DOWN]

Write enable for KEYPAD [WE-KP]

PID control cancel [Hz/PID]

Related function

H20～H25

Switching operation between line and inverter (50Hz) [SW50]

Switching operation between line and inverter (60Hz) [SW60]

Torque limit 2/torque limit 1 [TL2/TL1]

Related function

F40～F41

E16～E17

Write enable for KEYPAD [WE-KP]

Related function

E01～E09

(set value: 11, 35)

Related function

F01, C30

TECO–Westinghouse Motor Company Function Explanation 60

The analog input (terminals 12 and C1) can be switched
between forward and inverse operations by an external
digital input signal.

Set value
input signal

Function selected

21

off

Forward operation when forward

operation is set and vice versa

on

Inverse operation when forward

operation is set and vice versa

This function is invalid when the PID control is

selected(H20: 1 or 2).

When a contactor is installed on the output side of the
inverter, the contactor opens at the time of a momentary
power failure, which hinders the reduction of the DC
circuit voltage and may prevent the detection of a power
failure and the correct restart operation when power is
recovered. The restart operation at momentary power
failure can be performed effectively with power failure
information provided by an external digital input signal.

Set value
input signal

Function selected

22

off

No momentary power failure detection
operation by digital input

on

Momentary power failure detection
operation by digital input

Frequency and operation commands from the link can be
enabled or disabled by switching the external digital input
signal. Select the command source in H30, "Link
function." Assign value "24" to the target digital input
terminal and enable or disable commands in this input
signal state.

Set value

input signal

Function selected

24

off

Link command disabled.

on

Link command enabled.

Assigning value "25" to a digital input terminal renders the
terminal a universal DI terminal. The ON/OFF state of
signal input to this terminal can be checked through the
RS-485 and BUS option.
This input terminal is only used to check for an incoming
input signal through communication and does not affect
inverter operation.

The start characteristics function (pick-up mode) in
function code H09 can be enabled or disabled by
switching the external digital input signal. Assign value
"26" to the target digital input terminal and enable or
disable the function in this input signal state.

Set value

input signal

Function selected

26

off

Start characteristic function disabled

on

Start characteristic function enabled

Normally this terminal should be “ON”, when this terminal

goes off during motor running, the motor decelerates to
stop, and outputs alarm “Er6 “. When the inverter is stop
by STOP1/STOP2 signal, the signal should be kept on
4ms or longer.
In case of terminal [STOP2], the deceleration time is
determined by E15( DEC TIME4).
This function is prioritized under any operation (Terminal.
Keypad, Communication...operation). However when the
torque limiter/regeneration avoidance at deceleration is
selected, the time which is set by deceleration time may
be longer.

Inverse mode changeover [IVS]

Interlock signal (52-2) [IL]

Related function

F01, C30

Universal DI (U-DI)

Pick up start mode [STM]

Related function

H09

Related function

H30

Synchronization command ( Option ) [SYC]

ON

Er6

ON

ON

ON

FWD or REV

[STOP1] or
[STOP2]

Alarm

Output
Frequency

In case of [STOP2],
time is fixed by E15
(EDC TIME4)

Forced stop command with Deceleration [STOP1]

Forced stop command with Deceleration time 4 [STOP2]

Related function

F14

TECO–Westinghouse Motor Company Function Explanation 61

Related functions

E01 to E09

(Set values:14)

Related functions

U01
U60

Related functions

E01～E09

(Set value: 14)

This function switches the frequency setting method

set in function codes F01 and C30 by an external
digital input signal.
This is the reverse-logic of setting value
"11"(Frequency setting 2/Frequency setting 1
[Hz2/Hz1]).

Set value input signal

Frequency setting method selected

35

off

C30 FREQ CMD2

on

F01 FREQ CMD1

Note: It can not be used with set value "11"
simultaneously. When the set value "11" and "35" are
selected, "Er6" is displayed.

Digital

input

Setting at factory shipment

Set

value

Description

Terminal X1

0

Multistep frequency selection [SS1]

Terminal X2

1

Multistep frequency selection [SS2]

Terminal X3

2

Multistep frequency selection [SS4]

Terminal X4

3

Multistep frequency selection [SS8]

Terminal X5

4

Acceleration and deceleration selection [RT1]

Terminal X6

5

Acceleration and deceleration selection [RT2]

Terminal X7

6

Self-hold selection [HLD]

Terminal X8

7

Coast-to-stop command [BX]

Terminal X9

8

Alarm reset [RST]

Acceleration time 1 (F07) and deceleration time 1 (F08)

as well as three other types of acceleration and

deceleration time can be selected.
The operation and setting ranges are the same as those

of acceleration time 1 and deceleration time 1. See

explanations for F07 and F08.
For switching acceleration and deceleration times, select

any two terminals from terminal X1 (function selection) in

E01 to terminal X9 (function selection) in E09 as

switching signal input terminals. Set "4" (acceleration

and deceleration time 1) and "5" (acceleration and

deceleration time 2) to the selected terminals and input a

signal to each terminal to switch acceleration and

deceleration times. Switching is possible during

acceleration, deceleration, or constant-speed operation.

Example: When 4 and 5 are set to terminals X2 and X3:

ON

Time

ON

ON

FWD

(REV)

X2

X3

P24

Operation

Output
frequency

Maximum
frequency

Accel
time
1

Decel
time
1

Accel
time
2

Decel
time
2

Accel
time
3

Decel
time
3

Accel
time
4

Decel
time
4

This function is used to switch the torque limit level set

in F40 and F41 by an external control signal. Input an
external signal by selecting any of the control input
terminals (X1 to X9) as torque limit 2/torque limit 1
(value 14) in E01 to E09.

The motor tuning (P04 / A13) should be set to "2" for

this function is valid.

Maximum compensation frequency during braking torque limit

is set by U01.

The operation mode is set by U60 when the setting

value is "0%: Regeneration avoidance at deceleration".
The detail is referred to the U01, U60.

E 1 6 D R V T R Q 2 E 1 7 B R K T R Q 2

E16

Torque limiter 2 (driving)

Torque limiter 2 (braking)

E17

Settings when shipped from the factory

E10

Acceleration time 2

E11

Deceleration time 2

E12

Acceleration time 3

E13

Deceleration time 3

E14

Acceleration time 4

E15

Deceleration time 4

E 1 0 A C C T I M E 2 E 1 1 D E C T I M E 2 E 1 2 A C C T I M E 3 E 1 3 D E C T I M E 3 E 1 4 A C C T I M E 4 E 1 5 D E C T I M E 4

Frequency setting 1 / Frequency setting 2 [Hz1/Hz2]

TECO–Westinghouse Motor Company Function Explanation 62

Some control and monitor signals can be selected and

output from terminals [Y1] to [Y5]. Terminals [Y1] to
[Y4] use transistor output; terminals[Y5A] and [Y5C]
use relay contacts.

Set

value

Output signal

0

Operating [RUN]

1

Frequency arrival [FAR]

2

Frequency detection [FDT1]

3

Stopping due to undervoltage [LV]

4

Torque polarity detection [B/D]

5

Torque limiting [TL]

6

Restarting after momentary power failure [IPF]

7

Overload early warning [OL1]

8

During keypad panel operation [KP]

9

Inverter stopping [STP]

10

Ready for operation [RDY]

11

Operation switching between line and inverter [SW88]

12

Operation switching between line and inverter [SW52-2]

13

Operation switching between line and inverter [SW52-1]

14

Motor 2 switching [SWM2]

15

Terminal AX function [AX]

16

Pattern operation stage change [TU]

17

Pattern operation cycle operation completed [TO]

18

Pattern operation stage number [STG1]

19

Pattern operation stage number [STG2]

20

Pattern operation stage number [STG4]

21

Alarm detail [AL1]

22

Alarm detail [AL2]

23

Alarm detail [AL4]

24

Alarm detail [AL8]

25

Cooling fan operating [FAN]

26

Retry function operating [TRY]

27

Universal DO [U-DO] 

28

Heat sink overheat early warning [OH]

29

Not Used 

30

Life expectancy detection signal [LIFE]

31

2nd Freq. level detection [FDT2]

32

2nd OL level detection [OL2]

33

Terminal C1 off signal [C1OFF]

37

Torque limiting (Signal with delay) [TL2]

Note: For output signals marked "" are used for RS-485
communication.

"Running" means that the inverter is outputting a

frequency. “RUN” signal is output as when there is output

speed (frequency). When the DC injection brake
function is active, “RUN” signal is off.

See the explanation of function code E30 (frequency
arrival [detection width]).

See the explanation of function codes E31 and E32
(frequency detection).

If the undervoltage protective function activates, i.e.
when the main circuit DC voltage falls below the
undervoltage detection level, an ON signal is output. The
signal goes off when the voltage recovers and increases
above the detection level. The ON signal is retained
while the undervoltage protective function is activating.
Undervoltage detection level: 230V series: 200V, 460V
series: 400V.

This function determines the torque polarity calculated in
the inverter and outputs a signal indicating driving or
braking torque. An OFF signal is output for driving
torque; an ON signal is output for braking torque.

When the torque limiting activates, the stall prevention
function is automatically activated to change the output
frequency. The torque limiting signal is output to lighten
the load, and also used to display overload conditions on
the monitor device. This ON signal is output during the
current or torque is limited or power regeneration is
prevented.

Following a momentary power failure, this function
reports the start of the restart mode, the occurrence of
an automatic pull-in, and the completion of the recovery
operation.
Following a momentary power failure, an ON signal is
output when power is recovered and a synchronization
(pull-in) operation is performed. The signal goes off
when the frequency (before power failure) is recovered.
For 0Hz restart at power recovery, no signal is output
because synchronization ends when power is recovered.
The frequency is not recovered to the frequency before
the power failure occurrence.

Before the motor stops by the trip operation of an
electronic thermal O/L relay, this function outputs an ON
signal when the load reaches the overload early warning
level. Either the electronic thermal O/L relay early
warning or output current overload early warning can be
selected.

For setting procedure, see “E33 Overload early warning
(operation selection)”, and "E34 Overload early warning

(operation level)."Note: This function is effective for
motor 1 only.

An ON signal is output when operation command keys
( , and ) on the keypad panel can
be used (i.e., 0 set in "F02 Operation") to issue operation
and stop commands. This signal is OFF when the
function H30(Serial link) is set to communication side.

E 2 0 Y 1 F U N C E 2 1 Y 2 F U N C E 2 2 Y 3 F U N C E 2 3 Y 4 F U N C E 2 4 Y 5 F U N C

Inverter running [RUN]

Undervoltage detection signal [LV]

Keypad operation mode [KP]

運転中[RUN]

Frequency equivalence signal [FAR]

Frequency level detection [FDT1]

Torque polarity [B/D]

Torque limiting [TL]

Auto-restarting [IPF]

Overload early warning [OL1]

E20

Y1 terminal function

E24

Y5A and Y5C terminal function

～ ～

FWD

STOP

REV

TECO–Westinghouse Motor Company Function Explanation 63

This function outputs an inverted signal to Running

(RUN) to indicate zero speed. An ON signal is output

when the DC injection brake function is operating.

This function outputs an ON signal when the inverter is

ready to operate. The inverter is ready to operate when

the main circuit and control circuit power is established

and the inverter protective function is not activating.

About one second is required from power-on to ready for

operation in normal condition.

To perform switching operation between the line and the

inverter, the sequence prepared in the inverter can be

used to select and output signals for opening and closing

the magnetic contactors connected to the inverter. As

the operation is complex, refer to technical

documentation for the EQ5 series when using this

function.

As the sequence will operate automatically when SW88

or SW52-2 is selected, do not select when not using the

sequence.

When a signal for switching to motor 2 is input from the

terminal selected by terminals [X1] to [X9], this function

selects and outputs the signal for switching the magnetic

contactor for the motor. As this switching signal is not

output during running including when the DC injection

braking function is operating, a signal must be re-input

after output stops.

When an operation (forward or reverse) command is

entered, this function outputs an ON signal. When a

stop command is entered, the signal goes off after

inverter output stops. When a coast-to-stop command

is entered and the inverter protective function operates,

the signal goes off immediately.

When the pattern operation stage changes, this function

outputs a one-shot (100ms) ON signal to report a stage

change.

When the seven stages of a pattern operation are

completed, this function outputs a one-shot (100 ms) ON

signal to report the completion of all stages.

During pattern operation, this function reports the stage

(operation process) being operated.

Pattern operation

stage No.

Output terminal

STG1

STG2

STG4

Stage 1

ｏｎ

ｏｆｆ

ｏｆｆ

Stage 2

ｏｆｆ

ｏｎ

ｏｆｆ

Stage 3

ｏｎ

ｏｎ

ｏｆｆ

Stage 4

ｏｆｆ

ｏｆｆ

ｏｎ

Stage 5

ｏｎ

ｏｆｆ

ｏｎ

Stage 6

ｏｆｆ

ｏｎ

ｏｎ

Stage 7

ｏｎ

ｏｎ

ｏｎ

When pattern operation is not activated (i.e., no stage is

selected), the terminals do not output a signal.

This function reports the operating status of the inverter
protective function.

Alarm detail

(inverter protective function)

Output terminal

AL1

AL2

AL4

AL8

Overcurrent, ground fault, fuse blown

on

off

off

off

Overvoltage

off

on

off

off

Undervoltage shortage, input phase failure

on

on

off

off

Motors 1 and 2 overload

off

off

on

off

Inverter overload

on

off

on

off

Heat sink overheating, inverter inside overheating

off

on

on

off

External alarm input, braking resistor overheating

on

on

on

off

Memory error, CPU error

off

off

off

on

Keypad panel communication error, option communication error

on

off

off

on

Option error

off

on

off

on

Output wiring error

off

off

on

on

RS-485 communication error

on

off

on

on

Not Used EQ5

off

on

on

on

In normal operation terminals do not output a signal.

When used with "H06 Cooling fan ON/OFF control," this
function outputs a signal while the cooling fan is
operating.

When a value of 1 or larger is set to "H04 Retry
operating," the signal is output while retry operation is
activating when the inverter protective function is
activated.

Assigning value "27" to a transistor output terminal
renders the terminal a universal DO terminal.
This function enables ON/OFF through the RS-485 and
BUS option.
This function serves only to turn on and off the transistor
output through communication and is not related to
inverter operation.

This function outputs a early warning signal when heat
sink temperature is (overheat detection level - 10℃) or
higher.

When either of data for the Life expectancy judgment

of the function code:U09 to U11 reaches at the Life
expectancy judgment level, the ON signal is output.
However, the inverter does not do alarm.
Moreover, the alarm output for any fault (30A, 30B,
30C ) does not operate.

Function

code

Parts of

Life expectancy judgment

Life expectancy

judgment level

U09

Capacitor in main circuit

85% or less of the initial value

U10

Electrolytic capacitor on PCB

61,000 hours

U11

Cooling fan

25,000 hours

U59

DC fan broken for stir internal
unit up

[40HP/CT, 50HP/VT or more is
annunciated.]

DC fan is broken

Inverter stopping [STOP]

Ready output [RDY]

Line/Inv changeover [SW88] [SW52-2] [SW52-1]

Auto-resetting [TRY]

Cycle completion signal for pattern operation [TO]

Motor 2 /Motor 1 [SWM2]

Auxiliary terminal [AX]

Time-up signal for pattern operation [TU]

Stage No. indication for pattern operation [STG1] [STG2] [STG4]

Alarm indication [AL1] [AL2] [AL4] [AL8]

Overheat early warning [OH]

Fan operation signal [FAN]

Universal DO [U-DO]

Life expectancy detection signal [LIFE]

TECO–Westinghouse Motor Company Function Explanation 64

Related functions

U08～U11, U59

In the following cases, normal life judgment of the

capacitor in main circuit may not be able to be

performed.

1. When a power is turned off during inverter operation.

2. When cooling fan ON/OFF control is operated.
( function code : H 06= 1)

3. When the power is supplied by the auxiliary input
terminals (R0,T0).

4. When the option card is operated .

5. When RS-485 communication is operated .

6. When the power supply is turned off with digital input
(FWD, REV, X1-X9) of a control terminal being ON.

In the case of "3", "4", "5" and "6", life judgment is
enabled by adjusting the function both code:U08 and
U09.

This function is same as Frequency detection [FDT1],
the detection level of the output frequency and hysteresis
width are determined by E36 and E32.

This function outputs an ON signal when the output

current exceeds “E37 OL2 LEVEL” for longer than “E35

OL TIMER”.

NOTE) This function is valid for both of Motor 1 and
Motor 2.

This function outputs an ON signal when the input
current of terminal C1 is less than 2mA.
(When AIO option is connected, it can be detected the
disconnection of C2 terminal.)

The turning on signal is output by continuing the

limiting action(Torque limit operation, regeneration
avoidance operation and overcurrent limiting
operation) of 20ms or more.

Digital input

Setting at factory shipment

Set value

Description

Terminal Y1

0

Operating [RUN]

Terminal Y2

1

Frequency arrival [FAR]

Terminal Y3

2

Frequency detection [FDT]

Terminal Y4

7

Overload early warning [OL1]

Terminal Y5

10

Ready output [RDY]

This function specifies whether to excite the Y5 relay at
“ON signal mode” or “OFF signal mode”.

Set value

Operation

0

At “OFF signal mode” Y5A - Y5C: OFF
At “ON signal mode” Y5A - Y5C: ON

1

At “OFF signal mode” Y5A - Y5C: ON
At “ON signal mode” Y5A - Y5C: OFF

When the set value is "1", contacts Y5A and Y5C are

connected when the inverter control voltage is
established (about one second after power on).

This function adjusts the detection width when the output

frequency is the same as the set frequency (operating
frequency). The detection width can be adjusted from 0
to 10 Hz of the setting frequency.

Setting range: 0.0 to 10.0 Hz
When the frequency is within the detection width, an ON
signal can be selected and output from terminals [Y1] to
[Y5].

Output frequency

Frequency
detection
signal
(terminals
Y1 to Y5)

+Detection width

-Detection width

Set frequency

+Detection width

-Detection width

Set frequency

Time

ONON

This function determines the operation (detection) level

of the output frequency and hysteresis width for
operation release. When the output frequency exceeds
the set operation level, an ON signal can be selected and
output from terminals [Y1] to [Y5].

Setting range(Operation level) : EQ5: 0 to 120 Hz

(Hysteresis width) : 0.0 to 30.0 Hz

Output frequency

Frequency
detection
signal
(terminals

Y1 to Y5)

Hysteresis width

Operation level

Release level

Time

ON

Set frequency

E30

FAR function signal (Hysteresis)

E 3 0 F A R H Y S T

R

E32

FDT1 function signal (Hysteresis)

E31

FDT1 function signal (Level)

Settings when shipped from the factory

2nd Freq. level detection [FDT2]

2nd OL level early warning [OL2]

Terminal C1 off signal [C1OFF]

E 3 1 F D T 1 L E V E L E 3 2 F D T H Y S T R

E25

Y5 Ry operation mode

E 2 5 Y 5 R Y M O D E

Torque limiting (Signal with delay) [TL2]

TECO–Westinghouse Motor Company Function Explanation 65

Select one of the following two types of overload early

warning: early warning by electronic thermal O/L relay
function or early warning by output current.

Set value 0: Electronic thermal O/L relay

1: Output current

Set
value

Function

Description

0

Electronic
thermal
O/L relay

Overload early warning by electronic
thermal O/L relay (having inverse-time
characteristics) to output current.
The operation selection and thermal
time constant for the inverse-time
characteristics are the same as those
of the electronic thermal O/L relay for
motor protection (F10 and F12).

1

Output
current

An overload early warning is issued
when output current exceeds the set
current value for the set time.
The figure of OL2(E37) is referred.

This function cannot be used when Motor 2 is selected.

This function determines the operation level of the

electronic thermal O/L relay or output current.

Setting range EQ5:Inverter rated output current x (5 to 150%)
The operation release level is 90% of the set value.

This function cannot be used when Motor 2 is selected.

This function is used when 1 (output current) is set to

"E33 Overload early warning (operation selection)."
Setting range: 0.1 to 60.0 seconds

Set the time from when the operation level is attained

until the overload early warning function is activated.

This function determines the operation (detection) level

of output frequency for “2nd Freq. level detection [FDT2]”.
The hysteresis width for operation release is set by the
function E32: FDT1 function signal (Hysteresis).

Setting range(Operation level) : EQ5: 0 to 120 Hz

This function determines the operation level of the output

current for “2nd OL level detection [OL2]”.

Setting range EQ5: Inverter rated output current x (5 to 150%)

The operation release level is 90% of the set value.

ＯＮ

E37 OL2 LEVEL

E35
OL TIMER

[OL2]

Output current

OL2 LEVEL x 90%

(E34 OL1 LEVEL)

(OL1 LEVEL x 90%)

These coefficients are conversion coefficients which are

used to determine the load and line speed and the target
value and feedback amount (process amount) of the PID
controller displayed on the LED monitor.

Setting range
Display coefficient A:-999.00 to 0.00 to +999.00
Display coefficient B:-999.00 to 0.00 to +999.00

Load and line speed

Use the display coefficient A.

Displayed value = output frequency x (0.01 to 200.00)
Although the setting range is ± 999.00, the effective
value range of display data is 0.01 to 200.00. Therefore,
values smaller or larger than this range are limited to a
minimum value of 0.01 or a maximum value of 200.00.

Target value and feedback amount of PID controller

Set the maximum value of display data in E40, "Display
coefficient A," and the minimum value in E41, "Display
coefficient B."
Displayed value = (target value or feedback amount)
x (display coefficient A - B)+B

E 3 3 O L

W A R N I N

G

E 3 4 O L 1 L E V E L E 3 5 O L 1 T I M E R

E 4 0 C O E F A E 4 1 C O E F B

E34

OL function signal (Level)

E35

OL function signal (Timer)

Displayed value

A

Target value or
feedback amount

B

0%

100%

E40

Display coefficient A

E41

Display coefficient B

E33

OL function signal (mode select)

E36

FDT2 function (Level)

E 3 6 F D T 2 L E V E L

E37

OL2 function (Level)

E 3 7 O L 2 L E V E L

E40

Display coefficient A

E41

Display coefficient B

TECO–Westinghouse Motor Company Function Explanation 66

E 4 6 L A N G U A G E

The data during inverter operation, during stopping, at

frequency setting, and at PID setting is displayed on the
LED.

Display during running and stopping

During running, the items selected in "E43 LED monitor
(display selection)," are displayed. In "E44 LED monitor
(display at stopping)," specify whether to display some
items out of the set values or whether to display the
same items as during running.

Value
set to
E43

E44＝0

E44＝1

At stopping

During

running

At

stopping

During

running

0

Set frequency value
(Hz)

Output frequency
(before slip compensation) (Hz)

1

Set frequency value
(Hz)

Output frequency
(after slip compensation) (Hz)

2

Set frequency value (Hz)

3

Output current (A)

4

Output voltage (command value) (V)

5

Synchronous speed
set value (r/min)

Synchronous speed (r/min)

6

Line speed set
value (m/min.)

Line speed (m/min.)

7

Load speed set
value (r/min)

Load speed (r/min)

8

Calculated torque value (%)

9

Output power (HP)

10

PID target value 1 (direct input from keypad panel)

11

PID target value 2 (input from "F02 Frequency 1")

12

PID feedback amount

Note: For the values 10 to 12 set to E43, the data is
displayed only when selected in "H20 PID control
(operation selection)."

Display at frequency setting

When a set frequency is checked or changed by the
keypad panel, the set value shown below is displayed.
Select the display item by using "E43 LED monitor
(display selection)." This display is not affected by "E44
LED monitor (display at stopping)."

Value set to

E43

Frequency setting

0,1,2,3,4

Set value of frequency (Hz)

5

Set value of synchronous speed (r/min)

6

Set value of line speed (m/min.)

7

Set value of load speed (r/min)

8,9

Set value of frequency (Hz)

10,11,12

Set value of frequency (Hz)

Note: For the values 10 to 12 set to E43, the data is
displayed only when selected in "H20 PID control
(operation selection)."

This function selects the item to be displayed on the LCD

monitor in the operation mode.

Set value

Display item

0

Operation status, rotating direction, operation guide

1

Output frequency (before slip compensation), output
current, calculated torque value in bar graph

Set value: 0

During running When stopping

Set value: 1

Full-scale value of bar graph

Display item

Full-scale

Output frequency

Maximum frequency

Output current

200% of inverter rated value

Calculated torque value

200% of motor rated value

Note: The scale cannot be adjusted.

This function selects the language for data display on the

LCD monitor.

Set value

Language

displayed

Set value

Language

displayed

0

Japanese

3

French

1

English

4

Spanish

2

German

5

Italian

Note: English language is used for all LCD screens in this
manual. For other languages, refer to the relevant
instruction manual.

This function adjusts the LCD contrast. Increase the set

value to raise contrast and decrease to lower contrast.

Set value

0,1,2       8,9,10

Screen

Low High

E 4 3 L E D M N T R E 4 4 L E D M N T R 2 E 4 5 L C D M N T R

Hz
A
%
Fout/Iout/TRQ

60.00

STOP

PRGPRG MENU
F/DLED SHIFT

E45

LCD monitor (function)

60.00

RUN

PRGPRG MENU
F/DLED SHIFT

60.00

E43

LED monitor (function)

E44

LED monitor (display at stop mode)

FWD

E46

Language

E47

LCD monitor (contrast)

E 4 7 C O N T R A S T

TECO–Westinghouse Motor Company Function Explanation 67

This function makes the set frequency jump so that the

inverter's output frequency does not match the
mechanical resonance point of the load.

Up to three jump points can be set.
This function is ineffective when jump frequencies 1 to 3

are set to 0Hz.

A jump does not occur during acceleration or deceleration.

When a jump frequency setting range overlaps another
range, both ranges are added to determine the actual
jump area.

Setting range:
EQ5 : 0 to 120Hz
In 1Hz steps (min.)

Setting range
0 to 30Hz

In 1Hz steps (min.)

To avoid the resonance of the motor driving frequency to
the peculiar vibration frequency of the machine, the jump
frequency band can be set to the output frequency up to
three point.
During accelerating, an internal set frequency is kept

constant by the lower frequency of the jump frequency
band when a set frequency enters the jump frequency
band. This means that the output frequency is kept
constant according to an internal set frequency.
When a set frequency exceeds the upper bound of the
jump frequency band, an internal set frequency reaches
the value of a set frequency. The output frequency
accelerates up to a set frequency while passing the jump
frequency band according to the acceleration time at this
time.
During decelerating, it has a relation opposite to
accelerating. Refer to figure below.

When two jump frequency bands or more come in

succession mutually, the lowest and highest frequency
become the lower bound and the upper bound frequency
of an actual jump frequency band respectively among
them. Refer to upper right figure.

Multistep frequencies 1 to 15 can be switched by turning

on and off terminal functions SS1, SS2, SS4, and SS8.
(See E01 to E09 for terminal function definitions.)

OFF input is assumed for any undefined terminal of SS1,

SS2, SS4, and SS8.

Setting range
EQ5: 0.00 to 120.00Hz
In 0.01Hz steps (min

Internal set frequency (Hz)

Actual

jump width

Jump frequency 2

Jump frequency 1

Set frequency (Hz)

Jump frequency

width

C 0 1 J U M P H z 1 C 0 2 J U M P H z 2 C 0 3 J U M P H z 3 C 0 4 J U M P H Y S T

R

Internal set frequency (Hz)

Jump frequency 1

Jump frequency

width

Jump frequency

width

Jump frequency

width

Set frequency (Hz)

Jump frequency 2

Jump frequency 3

C 0 5 M U L T I H z - 1 C 0 6 M U L T I H z - 2 C 0 7 M U L T I H z - 3 C 0 8 M U L T I H z - 4 C 0 9 M U L T I H z - 5 C 1 0 M U L T I H z - 6 C 1 1 M U L T I H z - 7 C 1 2 M U L T I H z - 8 C 1 3 M U L T I H z - 9 C 1 4 M U L T I H z 1 0 C 1 5 M U L T I H z 1 1 C 1 6 M U L T I H z 1 2 C 1 7 M U L T I H z 1 3 C 1 8 M U L T I H z 1 4 C 1 9 M U L T I H z 1 5

C：Control Functions of Frequency

C01

Jump frequency 1

Jump frequency 2

C03

Jump frequency 3

C04

Jump frequency (Hysteresis)

C02

Related functions

E01 to E09

(Set value:0 to 3

)

C05

Multistep frequency 1

C19

Multistep frequency 15

～ ～

Output frequency
(Hz)

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

C05

FWD-P24

SS1-P24

SS2-P24

SS4-P24

SS8-P24

C06

C07

C08

C09

C10

C11

C12

C13

C14

C15

C16

C17

C18

C19

TECO–Westinghouse Motor Company Function Explanation 68

This function sets the frequency for jogging operation of

motor, which is different from the normal operation.

Setting range EQ5 : 0.00 to 120.00 Hz
Starting with the jogging frequency is combined with

jogging select signal input from the keypad panel or
control terminal. For details, see the explanations of
"E01 Terminal X1" to "E09 Terminal X9."

Pattern operation is an automatic operation according to

preset operation time, direction of rotation, acceleration
and deceleration time, and frequency.
When using this function, set 10 (pattern operation) to
"F01 Frequency setting."
The following operation patterns can be selected.

Set value

Operation pattern

0

Perform a pattern operation cycle, then stop operation.

1

Perform pattern operation repeatedly. Stop operation
using a stop command.

2

Perform a pattern operation cycle, then continue
operation with the last frequency set.

Time

Set value:0

0

Forward

Output

frequency

Reverse

End of a cycle

0

0

Set value:1

Set value:2

Forward

Output

frequency

Reverse

Forward

Output

frequency

Reverse

Time

Time

End of a cycle

End of a cycle

Seven stages are operated in order (of function codes)

according to the values set in "C22 Pattern operation
(stage 1)" to "C28 Pattern operation (stage 7)." Each
function sets the operation time and the rotating direction
for each stage and assigns set values of the acceleration

and deceleration time.

Set or

assign item

Value range

Operation time

0．00 to 6000s

Rotation
direction

F: Forward (counterclockwise)
R: Reverse (clockwise)

Acceleration
and
deceleration
time

1: Acceleration time 1 (F07), deceleration time 1 (F08)

2: Acceleration time 2 (E10), deceleration time 2 (E11)

3: Acceleration time 3 (E12), deceleration time 3 (E13)

4: Acceleration time 4 (E14), deceleration time 4 (E15)

Note: The operation time is represented by the three most
significant digits, hence, can be set with only three
high-order digits.

Setting example
100 F 3

Acceleration and deceleration
time (code): 3

Motor rotating direction:
Forward (counterclockwise)

Operation time: 100s

Set the operation time to 0.00 for stages not used, which
are skipped in operation.
With regard to the set frequency value, the multistep
frequency function is assigned as listed in the table below.
Set frequencies to "C05 Multistep frequency 1," to "C11
Multistep frequency 7."

Stage No.

Operation frequency to be set

Stage 1

Multistep frequency 1 (C05)

Stage 2

Multistep frequency 2 (C06)

Stage 3

Multistep frequency 3 (C07)

Stage 4

Multistep frequency 4 (C08)

Stage 5

Multistep frequency 5 (C09)

Stage 6

Multistep frequency 6 (C10)

Stage 7

Multistep frequency 7 (C11)

C 2 0 J O G H z C 2 2 S T A G E 1 C 2 3 S T A G E 2 C 2 4 S T A G E 3 C 2 5 S T A G E 4 C 2 6 S T A G E 5 C 2 7 S T A G E 6 C 2 8 S T A G E 7 C 2 1 P A T T E R N

C20

JOG frequency

C21

Pattern operation (mode select)

Related functions

F01, C30

(Set value:10)

FWD

FWD

FWD

C22

Pattern operation (stage 1)

C28

Pattern operation (stage 7)

～ ～

TECO–Westinghouse Motor Company Function Explanation 69

C 3 0 F R E Q C M D 2

Pattern operation setting example

Function

Set value

Operation frequency to be set

C21 (operation selection)

1 - C22 (stage 1)

60.0F2

Multistep frequency 1 (C05)

C23 (stage 2)

100F1

Multistep frequency 2 (C06)

C24 (stage 3)

65.5R4

Multistep frequency 3 (C07)

C25 (stage 4)

55.0R3

Multistep frequency 4 (C08)

C26 (stage 5)

50.0F2

Multistep frequency 5 (C09)

C27 (stage 6)

72.0F4

Multistep frequency 6 (C10)

C28 (stage 7)

35.0F2

Multistep frequency 7 (C11)

The following diagram shows this operation.

Forward
direction

Reverse
direction

Time

ACC2

ACC1

DEC4

ACC4

ACC3 DEC2

ACC2

ACC4

DEC2

DEC1

60.0S 100S 65.5S

55.0S

50.0S 72.0S

35.0S

0.1S

0.1S

Set
value
:16

Output signals from terminals Y1 to Y5

Output frequency(motor speed)

Multistep
frequency 1
(Stage 1)

Multistep
frequency 2

Multistep
frequency 3

Multistep
frequency 4

Multistep
frequency 5

Multistep
frequency 6

Multistep
frequency 7
(Stage 7)

Set
value
:17

Running and stopping are controlled by pressing the

and keys and by opening and closing the control
terminals.
When using the keypad panel, pressing the key
starts operation. Pressing the key pauses stage
advance. Pressing the key again restarts operation
from the stop point according to the stages. If an alarm
stop occurs, press the key to release operation
of the inverter protective function, then press the
key to restart stage advance.
If required to start operation from the first stage "C22
Pattern operation (stage 1)," enter a stop command and
press the key.
If an alarm stop occurs, press the key to release
the protective function, then press the key again.

Notes:

1. The direction of rotation cannot be reversed by a
command issued from the key on the keypad panel
or terminal [REV]. Any reverse rotation commands entered
are canceled. Select forward or reverse rotation by the data
in each stage. When the control terminals are used for
operation, the self-hold function of operation command also
does not work. Select an alternate type switch when using.

2. At the end of a cycle, the motor decelerates-to-stop
according to the value set to "F08 Deceleration time 1."

This function selects the frequency setting method.

For the setting method, see the explanation for F01.

This function sets the Gain and Bias of the analog input

(terminals [12] ).

The setting range :
BIAS: -100 to +100%
GAIN:0.0 to 200%

Terminal
12

Gain

Bias

Reference
voltage

-10 0 +10[V]

Output value of Gain 12

Analog input voltage
[terminal 12]

200%

100%

50%

+10V

-10V

-10 0 +10[V]

Output value of Bias 12

Output value of Gain 12

Bias setting
(when positive)

Bias setting
(when negative)

+10V

(+100%)

-10V

(-100%)

C 3 1 B I A S 1 2 C 3 2 G A I N 1 2

C30

Frequency command 2

C31

Bias (terminal[12])

C32

Gain (terminal[12])

C33

Analog setting signal filter

Related functions

E01 to E09

(Set value:11)

F01

FWD

FWD

FWD

FWD

FWD

REV

STOP

STOP

RESET

RESET

RESET

TECO–Westinghouse Motor Company Function Explanation 70

Analog signals input from control terminal 12 or C1 may

contain noise, which renders control unstable. This
function adjusts the time constant of the input filter to
remove the effects of noise.

Setting range: 0.00 to 5.00 seconds

An excessive setting delays control response though

stabilizing control. A set value too small speeds up
control response but renders control unstable.

If the optimum value is not known, adjust the setting when
control is unstable or response is delayed.

Note:
The set value is commonly applied to terminals 12 and C1.
For input of PID feedback amount, the PID control
feedback filter (set in H25) is used.

C 3 3 R E F F I L T E R

TECO–Westinghouse Motor Company Function Explanation 71

This function sets the number of poles of motor 1 to be

driven. If this setting is not made, an incorrect motor
speed (synchronous speed) is displayed on the LED.

Set values: 2, 4, 6, 8, 10, 12, 14

The nominal applied motor capacity is set at the factory.

The setting should be changed when driving a motor with
a different capacity.

Set value for models with nominal applied motor of 30HP or less
: 0.01 to 60HP

Models with nominal applied motor of 40HP or more
: 0.01 to 800HP

Set the nominal applied motor capacity listed in 9-1,

"Standard Specifications." Also set a value in the range
from two ranks lower to one rank higher than the nominal
applied motor capacity. When a value outside this
range is set, accurate control cannot be guaranteed. If
a value between two nominal applied motor capacities is
set, data for the lower capacity is automatically written for
related function data.

 When the setting of this function is changed, the values

of the following related functions are automatically set to
data of the TWMC 3-phase standard motor.

-- P03 Motor 1 (rated current)

-- P06 Motor 1 (no-load current)

-- P07 Motor 1 (% R1)

-- P08 Motor 1 (% X1)
Note:
The set values for the TWMC 3-phase standard motor are
230V, 50Hz, 4 poles for the 230V series; 460V, 50Hz, 4
poles for the 460V series.

This function sets the rated current value of motor 1.

Setting range: 0.00 to 2,000A

This function measures and automatically writes motor

data.

Set

value

Operation

0

Inactive

1

Measure the primary resistance (%R1) of the
motor and leakage reactance (%X) of the base
frequency when the motor is stopping and
automatically write both values in P07 and
P08.

2

Measure the primary resistance (%R1) of the
motor and leakage reactance (%X) of the base
frequency when the motor is stopping,
measure the no-load current (lo) when the
motor is running, and automatically write these
values in P06, P07, and P08.
Put the motor into the state unit separating
from the machine for the tuning of the no-load
current.
In the state that the load is connected, cannot
the tuning correctly. Execute the auto tuning of
set value “1" after obtaining the test report etc.
from the motor manufactures when not making
it in the state of the motor unit, and setting P06
(no-load current) beforehand.

Perform auto tuning when data in "P06 No-load current,"

"P07 %R1," and "P08 %X," differs from actual motor data.
Typical cases are listed below. Auto tuning improves
control and calculation accuracy.

・When a motor other than the TWMC standard 3-phase

motor is used and accurate data is required for close
control.

・When output-side impedance cannot be ignored as

when cable between the inverter and the motor is too
long or when a reactor is connected.

・ When %R1 or %X is unknown as when a non-standard

or special motor is used.

1. Adjust the voltage and frequency according to motor
characteristics. Adjust functions "F03 Maximum output
frequency," "F04 Base frequency," "F05 Rated voltage,"
and "F06 Maximum output voltage."

2. Enter untunable motor constants first. Set functions
"P02 Capacity," "P03 Rated current," and "P06 No-load
current," (input of no-load current not required when
P04=2, for running the motor at tuning, is selected).

3. When tuning the no-load current, beware of motor rotation.

4. Set 1 (motor stop) or 2 (motor rotation) to function "P04

Auto tuning." Press the key to write the set
value and press the key or key then
start tuning simultaneously.

5. Tuning takes several seconds to several tens of seconds

(when 2 is set. As the motor accelerates up to half the
base frequency according to acceleration time, is tuned
for the no-load current, and decelerates according to the
deceleration time, the total tuning time varies depending
on set acceleration and deceleration times.)

6. Press the key after the tuning is completed.

7. End of procedure.

P 0 1 M 1 P O L E S

P 0 2 M 1 - C A P

P 0 3 M 1 - I r P 0 4 M 1 T U N 1

Motor 1 (P: Motor Parameters)

P01

Number of motor 1 poles

P03

Motor 1 (rated current)

P04

Motor 1 (Tuning)

P02

Motor 1 (capacity)

Tuning procedure

FUNC
DATA

FWD

REV

STOP

TECO–Westinghouse Motor Company Function Explanation 72

Note1:
If REMOTE operation(F02: 1) is selected, operation signal is
given from terminal [FWD] or [REV].
Note2:
Use function "A13 Motor 2 (auto tuning)," to tune motor 2. In
this case, set values described in 1 and 2 above are for the
function (A01 - ) of motor 2.

WARNING

When the auto tuning value is set to 2,
the motor rotates at a maximum of half
the base frequency. Beware of motor
rotation.

Otherwise injury may result.

Long-time operation affects motor temperature and

motor speed. Online tuning minimizes speed changes
when motor temperature changes.

Auto tuning(P04/A13: 2) should be done to use this

function.

Set value

Operation

0

Inactive

1

Active

This function sets the no-load current (exciting current)

of motor 1.

Setting range: 0.00 to 2,000A

Write this data when using a motor other than the TWMC

standard 3-phase motor and when the motor constant
and the impedance between the inverter and motor are
known.

Calculate %R1 using the following formula:

 

100［%］×

・I3V/

R R1＋Cable

%R1 

R1 : Primary coil resistance value of the motor []
Cable R : Output-side cable resistance value []
V : Rated voltage [V] Ｉ: Motor rated current [A]

Calculate %X using the following formula:

 

 

100［%］×

・I3V/

X Cable+X2＋XMX1＋X2・XM/

%X 

X1 : Primary leakage reactance of the motor []
X2 : Secondary leakage reactance (converted to a
primary value)of the motor []
XM : Exciting reactance of the motor []
Cable X : Output-side cable reactance []
V : Rated voltage [V] I : Motor rated current[A]

Note:
For reactance, use a value in the data written in "F04
Base frequency 1."

When connecting a reactor or filter to the output circuit,

add its value. Use value 0 for cable values that can be
ignored.

Changes in load torque affect motor slippage, thus causing

variations in motor speed. The slip compensation control
adds a frequency (proportional to motor torque) to the
inverter output frequency to minimize variations in motor
speed due to torque changes.

Auto tuning (P04/A13: 2) should be done to use this

function.
Set value: 0.00 to 15.00Hz

Calculate the amount of slip compensation using the

following formula:

］［

］［

］［

＝ Hz

r/minspeed sSynchronou

r/minSlippage

×frequency Base

amount oncompensati Slip

Slippage = Synchronous speed - Rated speed

P 0 9 S L I P C O M P 1 P 0 5 M 1 T U N 2 P 0 6 M 1 － I O P 0 7 M 1 － % R 1 P 0 8 M 1 － % X

P06

Motor 1 (no-load current)

P05

Motor 1 (On-line Tuning)

P09

Slip compensation control

P08

Motor 1 (%X setting)

P07

Motor 1 (%R1 setting)

TECO–Westinghouse Motor Company Function Explanation 73

This function returns all function data changed by the

customer to the factory setting data. (initialization).

Set value 0： Disabled.

1： Initializing data.

To perform initialization, press the and keys

together to set 1, then press the key. The set
values of all functions are initialized. The set value in
H03 automatically returns to 0 following the end of
initialization.

When the inverter protective function which invokes the

retry operation is activated, this function releases
operation of the protective function and restarts
operation without issuing an alarm or terminating output.

Set the protective function release count and waiting
time from its operation startup to release.
Setting range (Count) : 0, 1 to 10

(Waiting time) : 2 to 20 seconds

To disable the retry function, set 0 to "H04 Retry (count)."

Inverter protective functions that can invoke retry

function.

OC1,OC2,OC3
: Overcurrent

dBH
: Braking resistor overheating

OV1,OV2,OV3
: Overvoltage

OL1
: Motor 1 overload

OH1
: Heat sink overheating

OL2
: Motor 2 overload

OH3
: Inverter inside overheating

OLU
: Inverter overload

When the value of "H04 Retry (count)," is set from 1 to

10, an inverter run command is immediately entered
following the wait time set in H05, "Retry (wait time),"
and the startup of the retry operation. If the cause of
the alarm has been removed at this time, the inverter
starts without switching to alarm mode. If the cause of
the alarm still remains, the protective function is
reactivated according to the wait time set in "H05 Retry
(waiting time)." This operation is repeated until the
cause of the alarm is removed. The restart operation
switches to alarm mode when the retry count exceeds
the value set in "H04 Retry (count)."
The operation of the retry function can be monitored
from terminals Y1 to Y5.

WARNING

When the retry function is selected,
operation automatically restarts depending
on the cause of the trip stop. (The
machine should be designed to ensure
safety during a restart)

Otherwise accidents may result.

When retry is succesful

Alarm

Automatic
release
command
of
protective
function

Time

Output
frequency

When retry failed

Alarm

Extinction

Waiting time
(H05)

0.1S

Restart

ON

Occurrence

Occurrence

Extinction

H05:

Wait
time

0.1S

H05:

Wait
time

0.1S 0.1S
Retry

end

First Second

Count set in

H04 (count)
Output
frequency

ON

Alarm
reset

Output
signals

terminals
Y1 to Y5

Automatic
release
command
of
protective
function

Output
signals

terminals
Y1 to Y5

5min. after
constant speed

RESET the times
of auto-reset

This function specifies whether cooling fan ON/OFF

control is automatic. While power is applied to the
inverter, the automatic fan control detects the
temperature of the cooling fan in the inverter and turns
the fan on or off.
When this control is not selected, the cooling fan rotates
continually.

H 0 6 F A N S T O P

Set value 0: ON/OFF control disabled.

1: ON/OFF control enabled.
The cooling fan operating status can be monitored from
terminals Y1 to Y5.

H 0 3 D A T A I N I T

H 0 4 A U T O - R E S E T H 0 5 R E S E T I N T

High Performance functions (H:High Performance function)

H03

Data initializing

H04

Auto-reset(Times)

H05

Auto-reset (Reset interval)

H06

Fan stop operation

FUNC
DATA

STOP



TECO–Westinghouse Motor Company Function Explanation 74

This function selects the acceleration and deceleration

pattern.

Set value

0: Inactive (linear acceleration and deceleration)
1: S-shape acceleration and deceleration (mild)
2: S-shape acceleration and deceleration (*)
3: Curvilinear acceleration and deceleration

* The S-shape range is set by the
function: U02 to U05 when the set value "2" is selected.
The detail is referred to the function: U02 to U05.
[S-shape acceleration and deceleration]
This pattern reduces shock by mitigating output frequency
changes at the beginning/end of acceleration and
deceleration.

Output frequency
0

f[Hz]

t[s]

dec

dec

acc

acc





Arbitrary S-shape

Mild S-shape ern

<Pattern constants>

When 1 is selected in H07
(mild S-shape pattern)

When 2 is selected in H07
(arbitrary S-shape pattern)

Range of
S-shape()

0.05 x max. output freq. (Hz)

(U02 to U05) x max. output
freq. (Hz)

Time for
S-shape at
acceleration
( acc)

0.10 x acceleration time (s)

(U02, U03) x2 x
acceleration time (s)

Time for
S-shape at
deceleration
( dec)

0.10 x deceleration time (s)

U04, U05 x2 x
deceleration time (s)

 When acceleration and deceleration times are very

long or short, acceleration and deceleration are rendered
linear.

It may be switched the acceleration and deceleration
time during constant speed or stopping by the function
"acceleration and deceleration time selection"(E01 to
E09: 4, 5).
The signal may be ignored switched during S-shape at
acceleration.
The linear deceleration time is corresponded if switched
during S-shape at deceleration.

It may be switched to the S-shape operation if output
frequency is reached to the setting frequency or change
to acceleration control.

[ Curvilinear acceleration and deceleration ]

This function is used to minimize motor acceleration and
deceleration times in the range that includes a
constant-output range.

Deceleration time

Maximum
output
frequency

Output
frequency

Base
frequency

t[sec]

0

Acceleration time

Set
frequency

When accidental reversing is expected to cause a

malfunction, this function can be set to prevent reversal.

H 0 8 R E V L O C K

Set value 0: Inactive

1: Active

When reversible operation with polarity(set value: "4" or
"5") is selected in frequency command: F01, C30, the
inverter operates as follows.

Operation
command

0V to 10V input

-10V to 0V input

Short FWD-CM
terminals or
: ON

The inverter operates.

The frequency display
is "0.00" Hz.

Short REV-CM
terminals or
: ON

The frequency display
is "0.00" Hz.

The inverter operates.

This function prevents a reversing operation resulting from
a connection between the REV and P24 terminals,
inadvertent activation of the key, or negative analog
input from terminal 12 or V1. During this function is
operating, "0.00Hz" is displayed on the LED monitor.
This function cannot be prevented against H18: Torque
control function. It may be reverse because of the torque
signal and load.

ACC/DEC （Mode select） pattern

H07

H 0 7 A C C P T N

Related functions

U02 to U05

H08

Rev. phase sequence lock

FWD

REV

REV

TECO–Westinghouse Motor Company Function Explanation 75

This function smoothly starts the motor which is coasting
after a momentary power failure or after the motor has
been subject to external force, without stopping motor.
At startup, this function detects the motor speed and
outputs the corresponding frequency, thereby enabling a
shock-free motor startup. Although the normal startup
method is used, when the coasting speed of the motor is
120 Hz or more as an inverter frequency, when the value
set to "F03 Maximum frequency," exceeds the value set to
"F15 Frequency limiter (upper limit)." and when the
coasting speed is less than 5 Hz as an inverter frequency.

H 0 9 S T A R T M O D E

Set value 0,1,2

Set value

STM

Restart after a
momentary power
failure or
Line-to-inverter
switching

Other
operation

0

OFF /
not selected

Inactive
(normal starting)

1

Active
(smoothly starting)

Inactive

2

Active

any value

ON

Active

STM: Start characteristics selection signal(E01 to E09: 26)
NOTE:

-1: Automatically restart when overcurrent or overvoltage is
detected during smoothly starts.

-2: The coasting speed is used 100 Hz or less as an
inverter frequency.

-3: When H09:2 or STM:ON, it needs the time more than
normal start even the motor is STOP because the motor
speed is detected on ALL situation. And it may be
rotated the motor when the load is too small.

-4: Auto tuning(P04/A13: 2) should be done to use this
function.

-5: When the used motor slippage is different from TWMC
motor, the "Slip compensation control (P09, A18)"
should be set. The characteristics may not be satisfied.

When the operation above is problematic, this function is

not used (inactive).

This function may not be satisfied due to the

characteristics because of the load condition, motor
constant, operating frequency, coasting speed, wire
length, momentary power failure time or external factor.

P24

STM

FWD

Time

0.1 s or
longer

0.2 s or
longer

ON

Time

Output
frequency
(motor speed)

Speed
search

In this section, the output
voltage is gradually increased
in steps to minimize shock.

Acceleration

ON

Note: The dotted-dashed line indicates motor speed.

When the output frequency is fixed (constant-speed

operation) at light loads and except for”0.0” is set to F09,
"Torque boost 1," this function automatically reduces the
output voltage, while minimizing the product (power) of
voltage and current.

Auto tuning (P04/A13: 2) should be done to use this

function.

The energy-saving operation does not be operated when

set below.

- Under Torque control

- Selected the Automatic torque boost

- Selected the Torque vector control

Set value 0: Inactive
1: Active
Note:

-Use this function for square law reduction torque loads
(e.g., fans, pumps). When used for a constant-torque
load or rapidly changing load, this function causes a delay
in control response.

-The energy-saving operation automatically stops
during acceleration and deceleration and when the
torque limiting function is activated.

This function selects the inverter stopping method when

a stop command is entered.

H 1 1 D E C M O D E

Set value 0: Deceleration-to-stop based on data set to

"H07 Non-linear acceleration and
deceleration"

1: Coasting-to-stop
Note:
This function is effective only when a stop command is
entered and, therefore, is ineffective when the motor is
stopped by lowering the set frequency.

An overcurrent trip generally occurs when current flows

above the inverter protective level following a rapid
change in motor load. The instantaneous overcurrent
limiting function controls inverter output and prohibits the
flow of a current exceeding the protective level even
when the load changes.

As the operation level of the instantaneous overcurrent

limiting function cannot be adjusted, the torque limiting
function must be used.

WARNING

As motor generation torque may be
reduced when instantaneous
overcurrent limiting is applied, set this
function to be inactive for equipment
such as elevators, which are
adversely affected by reduced motor
generation torque, in which case an
overcurrent trip occurs when the
current flow exceeds the inverter
protective level. A mechanical brake
should be used to ensure safety.

Otherwise accidents may result.

H 1 2 I N S T C L

Set value 0: Inactive

1: Active

H 1 0 E N E R G Y S A V

H09

Start mode

H12

Instantaneous overcurrent limiting

H10

Energy-saving operation

H11

DEC mode

H09

Start mode

TECO–Westinghouse Motor Company Function Explanation 76

Instantaneous switching to another power line (when the

power of an operating motor is cut off or power failure
occurs) creates a large phase difference between the
line voltage and the voltage remaining in the motor,
which may cause electrical or mechanical failure. To
rapidly switch power lines, enter the remaining voltage
attenuation time to wait for the voltage remaining in the
motor to attenuate. This function operates at restart
after a momentary power failure.

H 1 3 R E S T A R T T

Setting range: 0.1 to 5.0 seconds

When the momentary power failure time is shorter than

the wait time value, a restart occurs following the wait
time. When the power failure time is longer than the
wait time value, a restart occurs when the inverter is
ready to operate (after about 0.2 to 0.5 second).

This function determines the reduction rate of the output

frequency for synchronizing the inverter output frequency
and the motor speed. This function is also used to
reduce the frequency and thereby prevent stalling under
a heavy load during normal operation.

H 1 4 F A L L R A T E

Setting range: 0.00, 0.01 to 100.00 Hz/s

When 0.00 is set, the frequency is reduced according to

the set deceleration time.
Note:
A too large frequency reduction rate is may temporarily
increase the regeneration energy from the load and
invoke the overvoltage protective function. Conversely,
a rate that is too small extends the operation time of the
current limiting function and may invoke the inverter
overload protective function.

This function is for when 2 (deceleration-to-stop at power

failure) or 3 (operation continuation) is set to "F14

Restart after momentary power failure (operation

selection)." Either function starts a control operation if

the main circuit DC voltage drops below the set operation

continuation level.

H 1 5 H O L D V

Setting range 230 V series: 200 to 300V
460 V series: 400 to 600V
When power supply voltage to the inverter is high,

control can be stabilized even under an excessive load

by raising the operation continuation level. However,

when the level is too high, this function activates during

normal operation and causes unexpected motion.

Please contact TWMC electric when changing the initial

value.

As the power to an external operation circuit (relay

sequence) and the main power to the inverter is
generally cut off at a power failure, the operation
command issued to the inverter is also cut off. This
function sets the time an operation command is to be
held in the inverter. If a power failure lasts beyond the
self-hold time, power-off is assumed, automatic restart
mode is released, and the inverter starts operation at
normal mode when power is applied again. (This time
can be considered the allowable power failure time.)

H 1 6 S E L F H O L D T

Setting range: 0.0 to 30.0 seconds, 999

When "999" is set, an operation command is held (i.e.,
considered a momentary power failure) while control power
in the inverter is being established or until the main circuit
DC voltage is about 100Vdc.

This function controls motor torque according to a

command value.

This function automatically extends accelerating time

against acceleration operation of 60 seconds or longer to
prevent an inverter trip resulting from a temperature rise
in inverter due to overcurrent.

Set value 0: Inactive

1: Active
(When the active drive function is activated, the
acceleration time is three times the selected time.)

H 1 9 A U T R E D

H19

Active drive

H16

Auto-restart (OPR command selfhold time)

H13

Auto-restart (Restart time)

H14

Auto-restart ( Freq. fall rate)

H15

Auto-restart (Holding DC voltage)

H14

Auto-restart (Freq. fall rate)

TECO–Westinghouse Motor Company Function Explanation 77

PID control detects the amount of control (feedback

amount) from a sensor of the control target, then
compares it with the target value (e.g., reference
temperature). If the values differ, this function performs a
control to eliminate the deviation. In other words, this
control matches the feedback amount with the target

value.
This function can be used for flow control, pressure control,
temperature control, and other process controls.

Target

value

P

Drive

section

Control

target

I

D

+

+ +

+

-

Feedback amount

Forward or reverse operations can be selected for PID

controller output. This enables motor revolutions to be

faster or lower according to PID controller output
This function cannot be used when the motor 2 is

selected.

H 2 0 P I D M O D E

Set value 0: No operation

1: Forward operation
2: Reverse operation

Forward

operation

Reverse

operation

Maximum
frequency

0

0% 100%

PID output

Inverter output

frequency

The target value can be entered using F01, "Frequency

setting 1," or directly from the keypad panel. Select any

terminal of Terminals X1 (E01) to X9 (E09) and set value

11 (frequency setting switching).
For entry from F01, "Frequency setting 1," input an OFF
signal to the selected terminal. For direct entry from the
keypad panel, turn on the selected terminal.
For the target value and feedback amount, the process

amount can be displayed according to the values set in

E40, "Display coefficient A," and E41, "Display

coefficient B."

This function selects the feedback amount input terminal
and electrical specifications of the terminal. Select a value
from the table below according to sensor specifications.

Set value

Descriptions

0

Control terminal 12, forward operation (0 to
10V voltage input)

1

Control terminal C1, forward operation (4 to
20mA current input)

2

Control terminal 12, reverse operation (10
to 0V voltage input)

3

Control terminal C1, reverse operation (20
to 4mA current input)

Forward operation

Reverse

operation

100%

0%

0V

4mA

10V

20mA

Input

Feedback amount

Only positive values can be input for this feedback amount
of PID control. Negative values (e.g., 0 to -10V, -10 to 0V)
cannot be input, thereby the function cannot be used for a
reverse operation by an analog signal.

H 2 1 F B S I G N A L

Target value or
feedback amount

Display

Display coefficient A

Display coefficient B

0%

100%

H21

PID control (Feedback signal)

H25

PID control (Feedback filter)

H20

PID control (Mode select)

～ ～

TECO–Westinghouse Motor Company Function Explanation 78

H 2 2 P - G A I N

These functions are not generally used alone but are

combined like P control, PI control, PD control, and PID

control.

P operation

Operation using an operation amount (output frequency)

proportional to deviation is called P operation, which

outputs an operation amount proportional to deviation,

though it cannot eliminate deviation alone.

Time

Deviation

Operation

amount

Setting range: 0.01 to 10.0 times
P (gain) is the parameter that determines the response
level for the deviation of P operation. Although an
increase in gain speeds up response, an excessive gain
causes vibration, and a decrease in gain delays response.
The value "1" is the P(gain) that is when the maximum
frequency 100% at deviation 100%.

Time

Response

 I operation

An operation where the change speed of the operation

amount (output frequency) is proportional to the

deviation is called an I operation. An I operation

outputs an operation amount as the integral of deviation

and, therefore, has the effect of matching the control

amount (feedback amount) to the target value (e.g., set

frequency), though it deteriorates response for significant

changes in deviation.

Time

Deviation

Operation

amount

Setting range: 0.0 (Inactive), 0.1 to 3600 seconds
"H23 I-gain" is used as a parameter to determine the effect
of I operation. A longer integration time delays response
and weakens resistance to external elements. A shorter
integration time speeds up response, but an integration
time that is too short causes vibration.

D operation

An operation where the operation amount (output
frequency) is proportional to the deviation differential is
called a D operation, which outputs an operation amount
as the deviation differential and, therefore, is capable of
responding to sudden changes.

Time

Deviation

Operation

amount

Setting range: 0.00 (Inactive), 0.01 to 10.0 seconds
"H24 D-gain" is used as a parameter to determine the
effect of a D operation. A longer differentiation time
causes vibration by P operation quickly attenuating at the
occurrence of deviation. Excessive differentiation time
could cause vibration. Shortening the differentiation
time reduces attenuation at the occurrence of deviation.

PI control

P operation alone does not remove deviation completely.
P + I control (where I operation is added to P operation)
is normally used to remove the remaining deviation. PI
control always operates to eliminate deviation even when
the target value is changed or there is a constant
disturbance. When I operation is strengthened,
however, the response for rapidly changing deviation
deteriorates. P operation can also be used individually
for loads containing an integral element.

 PD control

If deviation occurs under PD control, an operation
amount larger than that of D operation alone occurs
rapidly and prevents deviation from expanding. For a
small deviation, P operation is restricted. When the
load contains an integral element, P operation alone may
allow responses to vibrate due to the effect of the integral
element, in which case PD control is used to attenuate
the vibration of P operation and stabilize responses. In
other words, this control is applied to loads in processes
without a braking function.

PID control

PID control combines the P operation, the I operation
which removes deviation, and the D operation which
suppresses vibration. This control achieves
deviation-free, accurate, and stable responses.

Adjusting PID set value

Adjust the PID value while monitoring the response
waveform on an oscilloscope or other instrument if
possible. Proceed as follows:

-Increase the value of "H22 P-gain" without generating
vibration.

- Decrease the value of "H23 I-gain" without generating
vibration.

- Increase the value of "H24 D-gain" without generating
vibration.

H 2 3 I - G A I N H 2 4 D - G A I N

H22

PID control (P-gain)

H23

PID control (I-gain)

H24

PID control (D-gain)

TECO–Westinghouse Motor Company Function Explanation 79

-To suppress vibration with a frequency roughly equivalent
to the value "H24 D-gain," decrease the value of H24. If
there is residual vibration with 0.0, decrease the value of
"H22 P-gain."

Response

Before
adjustment

After
adjustment

Time

This filter is for feedback signal input from terminal [12]

or [C1]. This filter stabilizes operation of the PID control
system. A set value that is too large, however,
deteriorates response.

H 2 5 F B F I L T E R

Setting range: 0.0 to 60.0 seconds

Set this function active when the motor has a PTC

thermistor for overheat protection

Set value 0: Inactive

1: Active

Connect the PTC thermistor as shown in the figure

below.
Turn on switch “PTC” on the control PCB.
The trip mode is activated by “OH2:External thermal

relay tripped.”

PTC

thermistor

H27

(Level)

Comparator

OH2

DC10V

Resistor
250 Ohom

0V

13

C1

11

ON OFF

PTC

1k Ohom

The voltage input to terminal [C1] is compared to the set

voltage (Level). When the input voltage is equal to or

greater than the set voltage (Level), "H26 PTC thermistor

(Mode select)," starts.

Setting range: 0.00 to 5.00V
The PTC thermistor has its own alarm temperature. The

internal resistance value of the thermistor largely change

at the alarm temperature. The operation (voltage) level

is set using this change in the resistance value.

Internal resistance of

PTC thermistor

Rp2

Rp1

Temperature

Alarm

temperature

The figure in "H26 PTC thermistor (Mode select)," shows
that resistor 250 and the thermistor (resistance value
Rp) are connected in parallel. Hence, voltage Vc1
(Level) at terminal [C1] can be calculated by using the
following formula.

］［

・

・

V10

Rp250

Rp250

1000

Rp250

Rp250

Vc

1











The operation level can be set by bringing Rp in the Vc1
calculation formula into the following range.

Rp

1

< Rp < Rp2

To obtain Rp easily, use the following formula.

［Ω］

2

RpRp

Rp

21





H 2 6 P T C M O D E

H26

PTC thermistor (Mode select)

H27

PTC thermistor (Level)

H 2 7 P T C L E V E L

H25

PID control (Feedback filter)

TECO–Westinghouse Motor Company Function Explanation 80

The link function (communication function) provides

RS-485 (provided as standard) and bus connections

(optional).
The serial link function includes:

1) Monitoring (data monitoring, function data check)

2) Frequency setting

3) Operation command

(FWD, REV, and other commands for digital input)

4)Write function data

H 3 0 L I N K F U N C

Setting range: 0 to 3
Communication can be enabled and disabled by a digital
input. This function sets the serial link function when
communication is enabled.

Set value

Frequency

command

Operation
command

0

Disabled

Disabled

1

Enabled

Disabled

2

Disabled

Enabled

3

Enabled

Enabled

The data monitoring and function data write functions are
always enabled. Disabling communication using digital
input brings about the same result as when "0" is set to this
function. When the bus option is installed, this setting
selects the function of the option and the RS-485 interface
is restricted to monitoring and writing function data.

These functions set the conditions of RS-485 Modbus-RTU
communication. Set the conditions according to the
upstream device. Refer to technical manual for the
protocol.
This function sets the station address of RTU.

H 3 1 4 8 5 A D R E S S

Setting range: 1 to 247
This function sets processing at communication error and

sets the error processing timer value.

H 3 2 M O D E O N E R

Setting range: 0 to 3

Set value

Processing at communication error

0

Immediate Er 8 trip (forced stop)

1

Continue operation within timer time, Er8 trip
after timer time.

2

Continue operation and effect retry within timer
time, then invoke an Er8 trip if a
communication error occurs. If an error does
not occur, continue operation.

3

Continue operation.

H 3 3 T I M E R

Setting range: 0.0 to 60.0 seconds
This function sets the baud rate.

H 3 4 B A U D R A T E

Setting range: 0 to 3

Set value

Baud rate

0

19200 bit/s

1

9600 bit/s

2

4800 bit/s

3

2400 bit/s

This function sets data length.

H 3 5 L E N G T H

Setting range: 0

Set value

Data length

0

8 bit

This function sets the parity bit.

H 3 6 P A R I T Y

Setting range: 0 to 2

Set value

Parity bit

0

None

1

Even

2

Odd

This function sets the stop bit.

H 3 7 S T O P B I T S

Setting range: 0, 1

Set value

Stop bit

0

2 bit

1

1 bit

The stop bit is automatically configured by the value of the
parity bit. For parity “NONE” the stop bit is 2bits. For
parity “EVEN” or “ODD” the stop bit is 1 bit.

In a system where the local station is always accessed

within a specific time, this function detects that access
was stopped due to an open-circuit or other fault and
invokes an Er 8 trip.

H 3 8 N O R E S t

Setting range: 0 (No detection)

1 to 60 seconds

This function sets the time from when a request is issued

from the upstream device to when a response is
returned.

H 3 9 I N T E R V A L

Setting range: 0.00 to 1.00 second

H30

Serial link (Function select)

H31

RS-485 (Address)

H39

RS-485 (Response interval)

～ ～

TECO–Westinghouse Motor Company Function Explanation 81

This function sets the maximum frequency for motor 2

output by the inverter. This function operates the same

as "F03 Maximum frequency 1." For details, see the

explanation for F03.

This function sets the maximum output frequency in the

constant-torque area of motor 2 (i.e., output frequency at

rated output voltage). This function operates the same

as "F04 Base frequency 1." For details, see the

explanation for F04.

This function sets the rated value of voltage output to

motor 2. This function operates the same as "F05

Rated voltage 1." For details, see the explanation for

F05.

This function sets the maximum value of the inverter

output voltage of motor 2. This function operates the

same as "F06 Maximum voltage 1." For details, see the

explanation for F06.

A 0 4 M A X V - 2

This function sets the torque boost function of motor 2.

This function operates the same as "F09 Torque boost

1." For details, see the explanation for F09.

This function sets the function of the electronic thermal

overload relay for motor 2. This function operates the
same as F10 to F12, "Electronic thermal overload relay

1." For details, see the explanations for F10 to F12.

This function sets the torque vector function of motor 2.

This function operates the same as "F42 Torque vector

control 1." For details, see the explanation for F42.

This function sets the number of poles of motor 2 to be

driven. This function operates the same as "P01 Number

of motor-1 poles." For details, see the explanation for P01.

This function sets the capacity of motor 2. This function

operates the same as "P02 Motor 1 (Capacity)." For
details, see the explanation for P02. However, the
related motor data functions change to "A12 Motor 2
(Rated current)," "A15 Motor 2 (No-load current)," "A16
Motor 2 (%R1 setting)," and "A17 Motor 2 (%X setting)."

This function sets the rated current of motor 2. This

function operates the same as "P03 Motor 1 (Rated
current)." For details, see the explanation for P03.

This function sets the auto tuning of motor 2. This

function operates the same as "P04 Motor 1 (Tuning)."
For details, see the explanation for P04.

This function sets the online tuning of motor 2. This

function operates the same as "P05 Motor 1 (On-line
tuning)." For details, see the explanation for P05.

This function sets the no-load current of motor 2. This

function operates the same as "P06 Motor 1 (No-load
current)." For details, see the explanation for P06.

This function sets %R1 and %X of motor 2. This

function operates the same as "P07 Motor 1 (%R1
setting)," and "P08 Motor 1 (%X setting)." For details,
see the explanations for P07 and P08.

This function sets the amount of slip compensation for

motor 2. This function operates the same as "P09 Slip
compensation control." For details, see the explanation
for P09.

Set value : 0.00Hz to 15.00Hz

Calculate the amount of slip compensation using the

following formula:
Slip compensation amount

］［ Hz

min]/r[ speed sSynchronou

min]/r[ Slippage

frequency Base 

Slippage = Synchronous speed-Rated speed

A 1 1 M 2 - C A P A 0 5 T R Q B O O S T 2 A 0 9 T R Q V E C T O R 2

A 0 1 M A X H z - 2

A 1 2 M 2 - I r A 0 2 B A S E H z - 2 A 1 3 M 2 T U N 1 A 0 3 R A T E D V 2 A 1 4 M 2 T U N 2 A 1 5 M 2 - I o A 0 6 E L C T R N O L 2 A 0 7 O L L E V E L 2 A 0 8 T I M E C N S T 2 A 1 0 M 2 P O L E S

Motor 2 (A: Alternative Motor Parameters)

A01

Maximum frequency2

A02

Base frequency 2

A05

Torque boost 2

A03

Rated voltage 2

A11

Motor 2 (Capacity)

A12

Motor 2 (Rated current)

A06

Electronic thermal overload relay 2 (Select)

A07

Electronic thermal overload relay 2 (Level)

A08

Electronic thermal overload relay 2 (Thermal time constant)

A09

Torque vector control 2

A10

Number of motor-2 poles

A13

Motor 2 (Tuning)

A04

Maximum voltage 2

A14

Motor 2 (On-line tuning)

A15

Motor 2 (No-load current)

A16

Motor 2 (%R1 setting)

A17

Motor 2 (%X setting)

A18

Slip compensation control 2

A 1 6 M 2 - % R 1

A 1 7 M 2 - %

X

A 1 8 S L I P C O M P 2

TECO–Westinghouse Motor Company Function Explanation 82

This function becomes effective, when the torque limit

(brake) is used. The inverter controls to increase the
output frequency so that torque calculations do not
exceed the torque limit (brake) setting ( F41 or E17).

(When F41 or E17 is set to 999, it becomes invalid.)
This function sets the increment of upper limit for
output frequency.
When the regeneration avoidance is selected, the
resurrection ability can be improved by raising the
increment of upper limit. However, the output frequency
of the inverter is limited at the frequency limit(high):
F15.

U 0 1 U S E R 0 1

Setting range : 0 to 65535

The set value "15" becomes 1Hz.
(The set value "1" becomes 1/15Hz)

1st S-shape level at acceleration (start)

U02

2nd S-shape level at acceleration (stop)

U03

1st S-shape level at deceleration (start)

U04

2nd S-shape level at deceleration (stop)

U05

When "2" is set in the function code: H07, both

curvilinear acceleration and deceleration ranges of
S-shape can be set up arbitrarily.
The range is the ratio for maximum output frequency 1
(F03) or 2 (A01) .

U 0 2 U S E R 0 2

U 0 3 U S E R 0 3

U 0 4 U S E R 0 4

U 0 5 U S E R 0 5

Setting range : 1 to 50%

U05

f1

Output frequency
0

f[Hz]

t[s]

tdec

tacc

U03

U02

U04

f0

100% value of this function means maximum

frequency (fmax) .

Acceleration time “tacc” and deceleration time “tdec”

of upper figure become longer than the linear

acceleration time and deceleration time. When the set

acceleration time(F07，E10，E12，E14) is assumed to

be “Ta” and deceleration time(F08，E11，E13，E15) is

assumed to be “Td”, “tacc” and “tdec” can be

calculated by the following expressions.

- At acceleration,

100

03U02U

maxf|0f1f|





or,

- At deceleration,

100

05U04U

maxf|0f1f|





Ta)

100

03U02U

maxf

0f1f

(tacc 









Td)

100

05U04U

maxf

0f1f

(tdec 









- At acceleration,

100

03U02U

maxf|0f1f|





or,

- At deceleration,

100

05U04U

maxf|0f1f|





Ta

100

03U02U

03U02U

100

maxf

0f1f

2tacc 



































Td

100

05U04U

05U04U

100

maxf

0f1f

2tdec 









































Initial value of main DC link capacitor

U08

Measured value of main DC link capacitor

U09

Data for the life expectancy judgment of the capacitor

in main circuit is stored in this function. The electrical
discharge time of the capacitor can be measured
automatically, and the time of part replacement can be
confirmed according to the decrement rate from the
factory shipment.

U 0 8 U S E R 0 8

U 0 9 U S E R 0 9

Setting range : 0 to 65535

The electrical discharge time which is measured in the

factory shipment is set to function code U08 as a initial
value. This value is different in each inverter.

The electrical discharge time of the capacitor is

measured automatically, when the power supply is
turned off. And, the result is stored in function code
U09.
When the power supply is turned off under the
conditions as follows, decrement rate (%) to the factory
shipment can be measured.
Conditions: which has been described to "*Estimation
of life expectancy based on maintenance information"
of the instruction manual "8-2 periodical inspection".

The result of

100

08U

09U



is displayed in CAP=xxx.x%

of maintenance information. 85% becomes a standard
at the part replacement time.

S-shape clause

linear Acceleration and
deceleration clause

U : User function

Maximum compensation frequency during braking torque limit

U01

TECO–Westinghouse Motor Company Function Explanation 83

◆When you make measurement of capacity and life
expectancy judgment of capacitor with an actual
operating condition, set the value “30” to the function
code “E20 to E24”. And write the measurement result
U09 with an actual operating condition to the function
code U08 as an initial value as early as possible since
inverter operation starts.
However, life judgment by the measurement result
cannot be performed in case of 1 and 2 as below.

1. During inverter operation, a power supply is turned

off and it stops.

2. Cooling fan ON/OFF control is used.

(function code : H 06= 1)
Turn off the power supply of inverter, on the conditions
at which the inverter has stopped, and a cooling fan is
operated. It is not necessary to remove an option card
and the connection with a control terminal.
As for this "measurement with an actual operating
condition", carry out this measurement about 10 times
to minimize the error of a measurement result, and
make the average value into an initial value.
Moreover, when there is 10% or more of change from
the last measured value, measurement is disregarded
in order to prevent incorrect measurement. Renewal of
a display is not carried out.

◆Set measured value U09 to the initial value U08 after
exchanging capacitors.

Related Functions

E20 to E24

(Set value：30)

PC board capacitor powered on time

U10

◆The accumulation time of the capacitor on PC board
are displayed. The accumulation time of the control
power supply multiplied by the life expectancy
coefficient defined by the temperature inside the
inverter are displayed. Hence, the hours displayed
may not agree with the actual operating hours. Since
the accumulation time are counted by unit hours,
power input for less than one hour will be disregarded.

The accumulation time are displayed in TCAP=xxxxxh
of maintenance information. The standard at the
replacement time is 61,000h. Refer to the manual "8-2
regular check" for the maintenance.

U 1 0 U S E R 1 0

Setting range： 0 to 65535 hours

◆Clear the accumulation time to 0 hour, after replacing
the PC board on which capacitors are equipped with.
There is also PC Board without the capacitor
(ex :Control circuit board) not to be cleared the
accumulation time. For details, contact TWMC.

Related Functions

E20 to E24

(Set value：30)

Cooling fan operating time

U11

◆The integrated operating hours of the cooling fan are
displayed. Since the integrated hours are counted by
unit hours, power input for less than one hour will be
disregarded. The integrated hours are displayed in
TFAN=xxxxxh of maintenance information.
The standard at the replacement time is 40,000h in the
inverter of 5HP or less. The standard at the
replacement time is 25,000h in the inverter of 7.5HP or
more. (Estimated life expectancy of a cooling-fan at

inverter ambient temperature of 40 degree.)

The displayed value should be considered as a rough
estimate because the actual life of a cooling fan is
influenced significantly by the temperature. Refer to
the manual "8-2 regular check" for the maintenance.

U 1 1 U S E R 1 1

Setting range : 0 to 65535 hours

Clear integrated operating time to 0 hour after replacing

the cooling fan.

Related Functions

E20 to E24

(Set value：30)

Magnetize current vibration damping gain

U13

◆Adjust if Magnetizing current vibration occurred in the
inverter output current .

U 1 3 U S E R 1 3

Setting range: 0 to 32767

◆Adjust the value from 0 to 2048 as a standard value.
Vibration damping gain becomes 100% in set value

4096.

Slip compensation filter time constant

U15

◆The filter time constant of Slip compensation is set.

U 1 5 U S E R 1 5

Setting range : 0 to 32767

◆Calculate the filter time constant using the following
formula.

valuesetU15""

2

constanttimeFilter

16



[ms]

◆The response time of the control slows because the
filter time constant is enlarged when a value is set to
smaller. However, system becomes steady.

◆The response time of the control quickens because the
filter time constant becomes smaller, when a set value
is enlarged.

Note： Response time quickens when a set value is

enlarged. Therefore, there is a possibility that the
output frequency becomes unstable. Please adjust
a set value to smaller than factory setting value.

Integral gain of continuous operation at power failure

U23

Proportional gain of continuous operation at power failure

U24

◆This function becomes effective, when function code
F14 (Restart mode after momentary power failure) set
value is 2 or 3.

U 2 3 U S E R 2 3

U 2 4 U S E R 2 4

Setting range : 0～65535

◆In case of F14 set value : 2.

When the operation continuation level (H15) is
reached, deceleration to a stop occurs. The DC
voltage of the main circuit sharpens the deceleration
slope, and the inverter collects the inertia energy of the
load to maintain the DC bus voltage and controls the
motor until it stops, so that the undervoltage protective
function is not activated.

The deceleration slope is adjusted with U23 and U24.
However, the deceleration operation time never

TECO–Westinghouse Motor Company Function Explanation 84

becomes longer than the set deceleration time.

◆In case of F14 set value : 3.
The output frequency is lowered by the control by
which the DC voltage of the main circuit is kept
constant from the regeneration energy, so that the
inverter may continue operation when momentary
power failure occurs.

The response is adjusted with U23 and U24 at this
time.

◆Calculate the integral gain using the following formula.

value set23"U"

2

gainIntegral

16



[ms]

PI

calculator

H15

Set value

DC voltage of the

main circuit

Output frequency

command

|ｆ＊|

I gain：U23

P gain：U24

|ｆ＊|

0

Output frequency

command

|ｆ＊＊|

Input phase loss protection

U48

◆This function selects operation of input phase loss or
power supply unbalance protection.

U 4 8 U S E R 4 8

Setting range : 0 to 2

Set value

Operation

0

Active (without reactor (ACR/DCR))

1

Active (with reactor (ACR/DCR))

2

Inactive

When "2" is set to U48, protection
operation of the inverter to input phase
loss or power supply voltage unbalance
does not work. If you use it as it is,
there is a possibility of damaging an
inverter and

failure may result.

RS-485 protocol selection

U49

◆The protocol of RS-485 communication is changed.

U 4 9 U S E R 4 9

Set value : 0, 1

Set value

Operation

0

FGI-bus

1

Modbus-RTU

Instruction manual and specifications are prepared
about communicative details. Contact TWMC.

◆When function code F13 (electronic thermal)is set to 2,
both the type of the braking resistor and connection
circuit are set. Factory setting is set to nominal applied
resistor and the number of resistor is one. When the
power load capacities of resistor are increased, set the
factory setting properly

U 5 9 U S E R 5 9

Setting range : 0 to A8 (HEX)

Setting of ten’s digit ( type selection )

Set

value

Resistance

[Ω]

Capacity

[W]

Duty
cycle

[%ED] 0 -

-

10%

1

100

200 2 40

400 3 33

400 4 20

800 5 15

900 6 200

200 7 160

400 8 130

400 9 80

800 A 60

900

Setting of unit’s digit (connection circuit selection)

Set value

Braking-resistor

*1)

Duty

cycle

[%ED]

Synthetic

resistance

[Ω]

Power

consumption per

resistance

[comparatively]

Use

number

Connection circuit

0

1

ＤＢ

Ｐ

10% R 100%

1

2

ＤＢ

Ｐ

20%

2R

50%

2

2

ＤＢ

Ｐ

20%

(1/2)R

50%

3

4

ＤＢ

Ｐ

40% R 25%

4

3

ＤＢ

Ｐ

30%

3R

33%

5

6

ＤＢ

Ｐ

50%

(3/2)R

17%

6

9

ＤＢ

Ｐ

50% R 11%

7

4

ＤＢ

Ｐ

40%

4R

25%

8

8

ＤＢ

Ｐ

50%

2R

12.5%

1) It is limited by the %ED value of the braking transistor
inside the inverter.

CAUTION

△

！

TECO–Westinghouse Motor Company Function Explanation 85

△

！

CAUTION

◆Set the function code both “ F13” and “U59 ” before
operating the inverter, and don’t change the functions
during operation. The integrated thermal data are
cleared immediately, when function code “ F13” or
“U59 ” are changed. The overheat protection of
resistor becomes invalid. When the function code
“ F13” or “U59 ” are changed in the state where
temperature rose, the overheat protection of resistor
becomes invalid, too.

◆As there is a possibility of damaging the inverter, the
resistor value less than standard applied value should
not be available.

◆Make into one kind the resistor used as combination
conditions for a braking resistor, and connect it so that
the electric power is consumed equally in each
resistor.

◆When the resistor which is instead of DB***-2C/4C are
used as External braking resistor, function code F13
should be set to “0”.

◆ When resistor values less than Standard applied
resistor value is set to the function code, regeneration
operation is invalid. OU alarm will be occurred.

◆If connection of resistor and setting value of resistor is
not corresponded, there is a possibility of damaging
the resistor and the inverter.

Caution or failure may result.

Function for manufacturer

[40HP or more is corresponded]

U59

This function is available to release the overheating alarm
(OH1) at the DC fan broken.

U 5 9 U S E R 5 9

Set value : 00, 01

Set value

Operation

00

OH1 alarm at DC fan broken

01

No alarm at DC fan broken

△

！

CAUTION

◆It causes overheating trip (OH1,OH3) in the inverter,
and the life time decrease such as electrolytic
capacitors on the PCB in the unit by a partial rise
temperature, and there is a possibility to the worst unit
damage when left with the DC fan for an internal stir
stops.
Be sure that set it to the fan exchange and the factory
setting value again promptly after the DC fan for an
internal stir stops. (Contact the fan exchange
procedure TWMC Electric.)

Failure may result.

Regeneration avoidance at deceleration

U60

◆This function is available, when torque limit (brake) of
F41( or E17) is set to “0%”.

U 6 0 U S E R 6 0

Set value : 0, 1

Set value

Operation

0

Torque limit operation
（for high response use）

1

OU alarm avoidance operation

（

for only deceleration or Large inertia use ）

◆If function code U60 is set to “0”, braking torque is kept
to about “0%” under acceleration, deceleration,
constant speed state. Output frequency is controlled in
correspond to the rapid change in motor load to
prevent OU alarm. Deceleration time becomes longer
than the set deceleration time (F08).

◆In case of setting value U60:1, Compared with setting
value "0", it controls not to perform torque limit
operation only at the deceleration time, but to prevent
the rise of the DC voltage of the main circuit, and
avoid OU alarm.

At this time, although deceleration time becomes
longer than a setting value of F08, it becomes shorter
than setting value"0" of U60. It may occur OU alarm, if
load changes rapidly during deceleration.

Voltage detect offset and gain adjustment

U61

◆40HP/CT, 50HP/VT or more :

It adjusts, only when a print board is replaced by
maintenance, etc. If not necessary, do not use this
function.

U 6 1 U S E R 6 1

Set value : 0, 1, 2

Inverter

capacity

Operation

30HP/CT or
40HP/VT or

less

0：Inactive(fixed)

40HPCT

50HP/VT or

more

0：Inactive
1：Voltage detect offset adjustment
2：Voltage detect gain adjustment

◆Set the function code in the following procedure.
If the inverter are operated without this adjustment
after replacing the PC board, normal operation may
not be able to be performed.

(Offset adjustment)

1) Confirm that the main power supply is turned ON,
the motor wiring are connected and the motor has
stopped (inverter operation command is OFF).

2) When the data of U61 is changed to "1", and the
FUNC/DATA key is ON, the offset self adjustment is
started. The display of “ storing" of the keypad
panel disappears several seconds later. When the
set value returns to "0", adjustment is completed.
If the main power supply is turned OFF, while
outputting alarm, motor is driving, coast-to-stop
command(BX) is ON and this adjustment is started,
the inverter becomes “Er7:TUNING ERROR".
In this case, start the adjustment after removing the
above-mentioned factor.

TECO–Westinghouse Motor Company Function Explanation 86

(Gain adjustment)

1) Drive the motor in an arbitrary frequency of about
10 to 60Hz (However, constant speed) after
executing the above-mentioned offset adjustment.
(U61:1)
At this time, gain adjustment is available unrelated
to the load state.

2) When the data of U61 is changed to "2", and the
FUNC/DATA key is ON, the gain self adjustment is
started. The display of “ storing" of the keypad
panel disappears several seconds to 30 seconds
later. When the set value returns to "0", adjustment
is completed.
If inverter is not operated, this adjustment is not

available.

Motor overload memory retention

U89

◆This is Motor overload memory (Electrical thermal O/L
relay) retention selection at power up.

U 8 9 U S E R 8 9

Setting range: 0, 1

Set value

Operation

0

Inactive
When power up the drive, Motor
Overload data is reset.

1

Active.
When power is down, the drive stores
Motor overload data and uses this data
at next power up.

(e.g

p

EQ5 AC Drive Operations Manual

6. Alarm Codes, Causes and Troubleshooting

The drive’s built-in protective features protect the drive against operation outside its design limits.

6-1 Alarm Codes and Causes

Upon activation of an Alarm, the LED display shows the alarm code and the motor coasts to a stop.

A list of alarm codes and causes are shown in the following table.

Table 6-6-1 List of Alarms and Causes

Alarm Name

Over current

Ground fault

Overvoltage

Undervoltage

Input open­phase

Cont.

Keypad panel display

LED LCD

OC1
OC2

OC3

EF

OU1
OU2

OU3

LU

Lin

OC DURING ACC
OC DURING DEC

OC AT SET SPD

GROUND FAULT

OV DURING ACC
OV DURING DEC

OV AT SET SPD

UNDERVOLTAGE

PHASE LOSS

Contents of operation

During
acceleration

During
deceleration

Running at
constant
speed

Alarm activates when the following condition occurs:

• Ground fault in the in the inverter output circuit is
detected.

It is recommended to install a separate ground-fault / ground
leakage protection relay to protect against personal injury or
property damage.
Note: For drives 30HP/CT, 40HP/VT and below Ground
Fault Detection is covered by the over-current protection
function.

During
acceleration

During
deceleration

Running at
constant
speed

Alarm activates when the following condition occurs:

• The DC link voltage of the main circuit falls below the
undervoltage detection level (230V series: 400V DC,
460V series: 800V DC) due to a low supply voltage.

Note: The undervoltage alarm is not displayed / activated
when parameter F14 (Restart after momentary power failure)
is selected or if the supply voltage falls below the level to
maintain control

Alarm activates when the following condition occurs:

• One of the input phases is lost (L1/R, L2/S, L3/T).

Note: Loss of an input phase may damage rectifying diodes
and / or bus capacitors.

Alarm activates when one of following
conditions occur:

• Inverter output current momentarily
exceeds the specified over-current
detection level.

• Short-circuit or ground fault in the output
circuit occurs.

Note: Ground Fault for inverters 40HP/CT,
50HP/VT and above is covered by a
separate ground fault protection function
(EF).

Alarm activates when the following condition
occurs:

• The DC link circuit voltage of the main
circuit exceeds the overvoltage detection
level (230V series: 400V DC, 460V
series: 800V DC) due to an increase in
the regenerating current from the motor.

Note: No protection is provided for a high
voltage inadvertently applied to the inverter
that exceeds the maximum overvoltage level

. high voltage line.

ower.

_______________________________________________________________________

TECO – Westinghouse Motor Company Alarm Codes & Causes 87

)

g

EQ5 AC Drive Operations Manual

Alarm activates when the following condition occurs:
Overheating of
heat
sink

External alarm

Inverter internal
overheating

Overheating of
braking resistor

Motor 1
overload

Motor 2
overload

Inverter
overload

Blown fuse

Memory error

OH1

OH2

OH3 HIGH AMB TEMP

dbH

OL1

OL2

OLU

FUS

Er1

FIN OVERHEAT

EXT ALARM

DBR OVERHEAT

MOTOR1 OL

MOTOR2 OL

INVERTER OL

DC FUSE OPEN

MEMORY ERROR

• Temperature of the heatsink rises above the maximum
allowed heatsink temperature due to a cooling fan failure.

• Temperature falls below the minimum allowed heatsink

temperature.
Alarm activates when one of following conditions occur:

• Control Circuit Terminal: THR input is closed (see user
connection).

• PTC Thermal Protection is enabled (H26 = 1) and
temperature level is reached.

Alarm activates when one of following conditions occur:

• Temperature inside the inverter rises above the
maximum allowed temperature. (E.g. due to poor
ventilation)

Current draw of terminal 13 exceeds 20mA (e.g. due to a
short circuit condition.

Alarm activates when the following condition occurs:
Electronic thermal O/L relay is enabled (Parameter F13) and
the external brakin

Alarm activates when the following condition occurs:
Electronic thermal O/L relay 1 is enabled (Parameter F10)
and the motor current exceeds the motor rated current level.

If the second motor current exceeds the preset level when
the operation is switched to drive the second motor, the
protective function is activated, provided that electronic
thermal O/L relay 2 of function code A04 is selected.

If the output current exceeds the rated overload current, the
protective function is activated to provide thermal protection
against semiconductor element overheating in the inverter
main circuit.

If the fuse in the inverter is blown out following a short-circuit
or damage to the internal circuit, the protective function is
activated (for 40HP/CT, 50HP/VT or more only).

If a memory error occurs, such as missing or invalid data, the
protective function is activated.

resistor is overheating.

Digital Operator
communication
error

CPU error

Option error

Forced stop
Output wiring

error
RS-485

communication
error

Er2

Er3
Er4

Er5
Er6

Er7

Er8

KEYPD COM ERR

CPU ERROR
OPTN COM ERR

OPTION ERROR
OPR PROCD ERR Error when using the forced stop comm and

TUNING ERROR

RS-485 COM ERR

_______________________________________________________________________

TECO – Westinghouse Motor Company Alarm Codes & Causes con’t 88

If a communication error or interrupt between the Digital
operator and control circuit is detected, the protective
function is activated.

If an CPU error occurs due to noise, etc., the protective
function is activated.

Error when using an optional unit

If there is an open circuit or a connection error in the inverter
output wiring during auto-tuning, the protective function is
activated.

If an error occurs when using RS-485 communications, the
protective function is activated.

EQ5 AC Drive Operations Manual

If an alarm reset is activated when the operating signal
is ON, the inverter can restart suddenly, which may be

DANGER

dangerous. To ensure safety to personnel, disable the
operating signal before resetting the alarm.

NOTES

_______________________________________________________________________

TECO – Westinghouse Motor Company Alarm Resetting 89

_

Y

EQ5 AC Drive Operations Manual

6-3.Trouble shooting

6-3-1 Protective function activation

(1) Overcurrent

Remove the short-circuit

and ground fault.

Reduce the load or increase

the inverter capacity.

Can the torque boost

NO

amount be reduced?

YES

Reduce the torque boost.

Faulty inverter or error

due to noise.

Consult with TWMC.

Prolong time settings.

Overcurrent

during acceleration

OC1

YES

YES

YES

NO

YES

Are the motor connecting terminals (U, V, W) short-circuited or grounded?

Is the torque boost

NO

compared with the load?

Can the acceleration time

correct?

Is the acceleration time

setting too short

setting be prolonged?

NO

YES

YES

NO

Overcurrent

during deceleration

Is the load excessive?

Is the deceleration time

NO

setting too short compared

with the load?

YES

Can the deceleration time
setting be prolonged?

OC2

NO

NO

YES

NO

Overcurrent

running at constant speed

Has the load changed

NO

OC3

suddenly?

YES

NONO

(2) Ground fault

Ground fault

EF

circuit (cable, motor) grounded?

Note: The ground fault protective function is only available for inverters rated 40H P/CT,
50HP/VT and above.

(3) Fuse brown

Fuse blown

FUS

Possible short-circuit

within the inverter.

Contact TWMC.

_____________________________________________________________________

TECO – Westinghouse Motor Company Trouble Shooting Chart 90

Reduce the load or increase

the inverter capacity.

Remove the grounded part.

Is a part in the inverter output

ES

The braking method

requires inspection.

Contact TWMC.

Faulty inverter or error due to noise.

NO

Contact TWMC.

Reduce the load or increase
the inverter capacity.

EQ5 AC Drive Operations Manual

(4) Overvoltage

Reduce the supply voltage

to less than the specified

upper limit.

Faulty inverter

or error due to noise.

Contact TWMC.

Can the deceleration time be prolonged?

Overvoltage

during acceleration

OU1

NO

Is the power supply voltage within the specified value?

YES YES YES

Is start mode(H09) activated and its start-mode?

Is restart mode after momentary power failure or

Does OU activated when the load is suddenly removed?

NO

NO

YES YES YES

Does OU alarm activate

NO

when acceleration

is completed?

YES

NO

Overvoltage

during deceleration

Overvoltage

running at constant speed

OU2

operation switching between line and inverter?

NO

Does the main circuit DC link circuit

voltage exceed the protection level?

Can the acceleration

time be prolonged?

NO

YES

OU3

NONONO

NONONO

NO

NO

YES

YES

YES

YES

Prolong.

Check the motor and /or

the terminal(U, V, W)

is shorted or ground fault.

Restart time(H13) is

set longer.

(5) Low voltage

Reduce.

Low voltage

LU

Is the power supply

voltage within the

specified value?

NO

YES

Can the moment of load inertia be reduced?

NO

Is the braking device or DC brake function in use?

YES

Inspect the braking method. Contact TWMC.

Has a (momentary) power

failure occurred?

NO

Faulty parts or loose

NO

connection in the

power circuit?

Is there a load requiring

a large starting current
within the same power

distribution group?

YES

Modify power distribution system

to satisfy the specified value.

NO

YES

Reset and restart

YES

YES

operation.

Replace the faulty part

and repair the connection.

Does LU activate when

the circuit breaker or

magnetic contactor is

switched on?

Is power transformer
capacity adequate?

YES

NO

Consider using

NO

a braking system

YES

Is the main circuit DC voltage

NONOYES

YES

or DC brake function.

Faulty of inverter control

circuit or error due

to noise, etc.

Contact TWMC.

(between P-N) higher than

the detection level specified

in Section 6.1.1?

The inverter may be faulty.

Contact TWMC.

YES

NO

______________________________ _________________________________________

TECO – Westinghouse Motor Company Trouble Shooting Chart 91

EQ5 AC Drive Operations Manual

)

(6) Overtemperature at inside air

(6) Overtemperature at inside air

and overheating at heatsink.

and overheating at heatsink.

Overtemperature at inside air

Overtemperature

at inside air OH3

Is between the control
terminals 13-11 closed?

Check the temperature of
the heatsink using the alarm
information displayed
on the keypad panel.

OH3

NO

Check the temperature of
the heatsink using the alarm
information displayed
on the keypad panel.

Check the keypad panel
display.
Display limit or not?
30HP or less: 20 degrees C.

Is the cooling fan for mixing
inside air rotating?
(40HP/CT, 50HP/VT or more)

Does the heatsink
temperature indicate

NO

-10Ž or lower?

Is the peripheral
temperature of the
inverter –10 degrees C
or less ?

Is the load excessive?

YES

Is the load

Is the cooling

NO

fan rotating?

Is the cooling
fan rotating?

YES

Is the cooling air
passage blocked?

YES (30HP/CT, 40HP/VT or less)

Is the cooling air

Is the ambient

passage blocked?

temperature within

NO

the specification?

Is the ambient
temperature within
the specification ?

Arrange peripheral
conditions to meet

Arrange peripheral

the specification.

conditions to meet the
specification.

at heatsink OH1

YES

NO

NO

YES

NO

NO

Overheating at

heatsink OH1

Overheating

Is between the control
terminals 13-11 closed?

Remove the short circuit.

Is the cooling fan
for mixing inside air
rotating? (40HP/CT,

NO

YES

NO

NO

YES

YES

YES

YES

NO

YES

YES

50HP/VT or more

Faulty detection
circuit on PCB.
Contact TWMC

Make peripheral
temperature of the

Reduce the load.

inverter to meet
the specification.

Reduce the load.

Replace the cooling fan.

Replace the cooling
fan.

Remove obstacles.

Replace the cooling
fan for mixing inside
air.

Remove obstacles.

Faulty inverter or error
due to noise, etc.
Contract TWMC.

YES

NO

YES (30HP/CT, 40HP/VT

Faulty detection
circuit on PCB.
Contact TWMC.

Faulty inverter or error
due to noise, etc.
Contact TWMC.

(8) Inverter unit overload and motor overload

Inverter unit

overload OLU

Motor overload

OL1, OL2

YES

NO

(7) External thermal relay tripped

External thermal relay tripped

NO

Faulty inverter or error
due to noise, etc.
Contact TWMC.

OH2

Is PTC MODE
H26 enabled?

YES

Is PTC operating?

YES

NO

Is PTC level
H27 set correctly?

YES

Is the external circuit
(including constants)

regular?

YES

Is data input to
the control terminals
THR-X1 to X9?
Are alarm signals from
external equipment
input to the terminals
and the CM?

YES

Is the alarm function
of the external
equipment operating

correctly?

YES

Incorrect motor load or
inadequate cooling.
Check the motor side.

NO

NO

Connect the alarm

NO

signal contact.

Remove the cause

NO

of alarm function
activation.

Set to correct
value.

Change to regular

external circuit.

Do the characteristics
of the electronic thermal
O/L relay and motor
overload match?

Is the electronic thermal
O/L relay setting correct?

Is the load excessive?

Reduce the load or
increase inverter
capacity

______________________________ _________________________________________

TECO – Westinghouse Motor Company Trouble Shooting Chart 92

YES

YES

YES

Connect a thermal

NO

O/L relay externally.

NO

Set to the correct level

Faulty inverter or error

NO

due to noise, etc.
Contact TWMC.

Faulty inverter or error
due to noise, etc.
Contact TWMC.

EQ5 AC Drive Operations Manual

Is the U, V, W

g

(9) Memory error Er1,

(9) Memory error Er1,

Keypad panel communication error Er2,CPU

Keypad panel communication error Er2,

error Er3

CPU error Er3

(10) Output wiring error

(10) Output wiring error

Er1,2,3 indicated. Abnormal

display or indication goes out.

Turn the power off then on

again after the CHARGE lamp

(CRG) goes off.

Is disappeared an

error code on

the LED monitor?

YES

Is Er1 displayed?

control power input

Did the power off

when the function data

reset the alarm after

the initialize by H03?

Inverter is normal.
Continue operation.

(11) Input phase loss

Input phase loss

Lin

Is the inverter ROM No.

NO

S09000 or more?

YES

Is the setting value of

input phase loss protection

(U48) is correct?

YES

Are all main circuit power

supply terminals L1/R, L2/S

and L3/T connected to

the power supply?

YES

NO

YES

Is the auxiliary
terminal used?

YES

was writing?

YES

Is it possible to

YES

NO

NO

The trouble part is
improvement.

NO

source around?

NO

NO

NO

Inverter may be faulty.
Contact TWMC.

Set it correct value.

Connect all

three phases.

YES

Is there noise

NO

Output wiring

error Er7

Is Er7 displayed?

NO

Did the error occur

YES

during tuning?

NO

Are the braking unit and

braking resistor connected

incorrectly?

NO

Faulty inverter or error
due to noise, etc.
Contact TWMC.

Is The U,V,W terminal

terminal wiring not

wiring not connected

connected or is there

or is there an open circuit?

an open circuit?

Is the keypad panel

connector loose?

Is the operation signal

Is the operation signal OFF

OFF during auto-

during auto-tuing?

tunin

Is it overcurrent limiting

Is it overcurrent limiting

because of small value of

because of small value of

acceleration/deceleration

accelaration/deceleration

time (F07/F08)?

Is the coast-to-stop

Faulty inverter or

error due to noise, etc.

Contact TWM C.

NO

NO

?

NO

time(F07/F08)?

NO

signal(BX) ON?

NO

Are the braking unit and

braking resistor connected

incorrectly?

YES

Is the wiring of CNRXTX(RED)

correct on the power PCB?

(When DC power supply, connect it to the

R0-T0 side and AC power input is

connected to the auxilialy power

Connect

YES

correctly
or replace
the cable.

Connect

YES

correctly
or replace
the cable.

Secure

YES

the connector.

YES

Do not operation signal OFF
until finishing the auto tuning.

YES

Acceleration/Deceleration

time is longer.

YES

It is OFF.

NO

input terminal.)

NO

Faulty inverter or error
due to noise, etc.
Contact TWMC.

YES

YES

Connect
correctly
the cable.

Connect
correctly
the cable.

Are there loose screws

on the terminal block?

NO

Is there a significant

imbalance voltage

between phases?

NO

Faulty inverter or error
due to noise, etc.
Contact TWMC.

Tightenen the screws

YES

on the terminal block.

The power supply is incorrect.

YES

The inspection of the power supply
is needed including the wiring.

(12) Charging circuit error

Charging circuit error

Er7

Is circuit power supply terminals

Is circuit power supply terminals L1/R, L2/S

L1/R,L2/S and L3/T supplied the

and L3/T supplied the power voltage?

power voltage?

YES

Faulty inverter or error
due to noise, etc.
Contact TWMC.

______________________________ _________________________________________

TECO – Westinghouse Motor Company Trouble Shooting Chart 93

NO

Input the voltage.

EQ5 AC Drive Operations Manual

6-4 Abnormal motor rotation

(1) If motor does not rotate

Motor does not rotate.

Remove the cause of
alarm function activation
and reset the alarm,
then run the motor.

If no error is detected,
continue operation.

YES

Does the motor run
if FWD or REV is

pressed?

NO

Press the

∧

key and set
the frequency.

YES

Does the motor start
when the key

∧

is pressed?

NO

Set the frequency

correctly.

Faulty motor

Charge lamp (CRG)
lights and LCD monitor

lights up?

YES

Is the LCD mo n itor

YES

displaying an alarm
mode screen?

NO

Is operation method
the keypad panel or
control terminal input?

Keypad

panel

NO

Was the forward or
reverse operation
command given?

YES

NO

Has the frequency
been set?

YES

Are the frequency limiter
(High) and the frequency

setting lower than

YES

the starting frequency?

NO

Are the inverter output
terminals (U,V,W ) provided
with the proper voltage?

YES

Are the circuit breaker and

NO NO

magnetic contactor on the
power supply side switched on?

YES

Are the voltages
on the power terminals
(R/L1, S/L2, T/L3) norm a l?

YES

Is a jumper or DC rea cto r
connected between
terminals P1 and P(+)?

Control

YES

terminals

Are external wiring

Are external wiring between

NO

YES

NO

between control circuit

control circuit terminals
FWD, REV -CM

terminals FWD, REV-

connected correctly?

CM connected

NO

Is the external wiring
between control terminals

YES

13, 12, 11, C1and V2 or
between X1-X9 and
CM fo r th e multistep
frequency selection
connected correctly?

YES

NO

Inverter may be faulty.
Contact TWMC.

Turn on.

Check for problems
(low voltage,

NO

an open-phase,
a loose connection,
poor contact) and
remedy accordingly.

NO

Connect.

Inverter may be faulty.
Contact TWMC.

Replace the faulty

YES

switch or relay.

Correct the wiring error.

NO

Replace the faulty

Replace the faulty

frequency setting POT (VR),

frequency setting POT (VR)

signal converter, switch,

, signal converter, switch,

or relay contacts as required.

or relay contacts as required.

NO

Excessive load? Correct the wiring error.

YES

YES

Is the torque boost

YES

set correctly?

NO

Raise the torque boost.

The motor does not rotate if the following commands are issued.
An operation command is issued while the coast-to-stop or DC braking command is output
A reverse operation command is issued with the “H08 Rev. phase sequence lock” value set to 1.

______________________________ _________________________________________

TECO – Westinghouse Motor Company Trouble Shooting Chart 94

Are the cables to

the motor connected

NO

correctly?

The load is excessive,
resulting in mo to r lo c k.
Reduce the load and check
that the brake is released
(if a mechanical brake is used).

Note: Monitor the ope ration
command or freque ncy setting

values, etc., on the LED or LCD
monitor after selecting
the respective functions.