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)

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TECO – Westinghouse Motor Company DC Link Chokes 24