IMO VXSM75-1, VXSM150-1, VXSM75-3, VXSM40-1, VXSM150-3 Instruction Manual

Instruction manual

IMO Jaguar VXSM General Purpose Inverter

Single Phase 230V input, 0.4-2.2kW

Three Phase 415V input, 0.4-7.5kW

Contents

Safety Instructions i

1. Before Using the Inverter 1-1

1-1 Receiving Inspection 1-1
1-2 Appearance of Product 1-1
1-3 Handling the Product 1-3
1-4 Transportation 1-6
1-5 Storage 1-6

2. Installation and Connection 2-1

2-1 Operating Environment 2-1
2-2 Installation Method 2-1
2-3 Connection 2-2

2-3-1 Basic Connection 2-2
2-3-2 Connection of Main Circuit

and Grounding Terminal 2-4

2-3-3 Connection of Control

Terminals 2-6
2-3-4 Terminal Layout 2-9
2-3-5 Applicable Devices and

Cable Sizes for Main Circuit 2-11

3. Operation 3-1

3-1 Inspection and Preparation

Before Operation 3-1
3-2 Operation Method 3-1
3-3 Test Operation 3-1

4. Keypad Panel 4-1

4-1 Appearance of Keypad Panel 4-1

4-1-1 Upon an Alarm 4-3
4-1-2 Digital Frequency Setting

Method 4-3

5. Selecting Functions 5-1

5-1 Function Selection List 5-1
5-2 Detail Description of Each

Function 5-11

Fundamental Functions

(F Functions) 5-11

Extension Terminal Functions

(E Functions) 5-21

Control Functions of Frequency

(C Functions) 5-26

Motor Parameters (P Functions) 5-28

High Performance Functions

(H Functions) 5-30

Alternative Motor Parameters

(A Functions) 5-38

Optional Functions

(O Functions) 5-39

6. Protective Operation 6-1

6-1 List of Protective Operations 6-1
6-2 Alarm Reset 6-2

7. Troubleshooting 7-1

7-1 When Protective Function

Activates 7-1

7-2 When Motor rotates Incorrectly 7-5

8. Maintenance and Inspection 8-1

8-1 Daily Inspection 8-1
8-2 Periodic Inspection 8-1
8-3 Measurement of Current

and Voltage in Main Circuit 8-4
8-4 Insulation Test 8-5
8-5 Replacement Parts 8-5
8-6 Inquiries about Product and

Guarantee 8-5

9. Specifications 9-1

9-1 Standard Specifications 9-1
9-2 Common Specifications 9-3
9-3 External Dimensions 9-7
9-4 RS485 Communication 9-11

9-4-1 Connector and

Communication Cable 9-12

9-4-2 Recommended

RS-232C/RS485 Converter 9-12
9-4-3 Remove/local changeover 9-12
9-4-4 Communication Protocol 9-13
9-4-5 Standard Frame 9-15
9-4-6 Short Frame 9-16
9-4-7 Details of Frame 9-17
9-4-8 Broadcasting 9-18
9-4-9 Communication Error Code 9-19
9-4-10 Data Type 9-19
9-4-11 Function Code List 9-20
9-4-12 Data Format 9-24

10. Options 10-1

10-1 External Options 10-1

11. Applicable Reactor 11-1

12. Electromagnetic compatibility 12-1

12-1 General 12-1
12-2 Recommended Installation

Instructions 12-1

13. Warranty Statement 13-1

Product Support Contacts

Safety Instructions i

Introduction
Safety precautions

Read through this manual before starting
installation, connection (wiring), operation, or
maintenance and inspection for correct use. Be
familiar with the knowledge about the device,
information about safety, and all the precautions
before starting operation.
The safety precautions are classified into the
following categories in this manual.

WARNING

Negligence of the description can
cause dangers including deaths or
serious injuries.

CAUTION

Negligence of the description can
cause dangers including intermediate
or slight injuries or material losses.

Negligence of the description under the
CAUTION title can cause serious results in
certain circumstances. These safety
precautions are important and must be
observed at all times.

Purposes

WARNING

• VXSM is designed to drive a three-

phase induction motor. Do not use it
for single-phase motors or for other
purposes.

Otherwise fire could occur.

• VXSM may not be used for a life-support

system or other purposes directly related
to human safety.

• Though VXSM is manufactured under

strict quality control, install safety devices
for applications where serious accidents
or material losses are foreseen in relation
to the failure of it.

Otherwise accidents could occur.

Installation

WARNING

• Install the inverter on a
nonflammable material such as metal.

Otherwise fire could occur.

• Do not place flammable matter nearby.

Otherwise fire could occur.

CAUTION

• Do not hold the cover during
transportation.

Otherwise the inverter may drop and
cause injuries.

• Do not allow lint, paper, wood chips, dust,
metallic chips or other foreign matter in
the inverter.

Otherwise fire or an accident could
occur.

• Do not install or operate an inverter which
is damaged or lacking parts.

Otherwise fire, an accident or injuries
could occur.

ii Safety Instructions

Wiring

CAUTION

• Check that the number of phases

and the rated voltage of the product
agree with the number of phases and the
voltage of the AC power supply.

Otherwise fire or an accident could
occur.

• Do not connect the AC power cables to

the output terminals (U, V, W).

Otherwise fire, accident or damage could
occur.

• Do not connect a braking resistor directly

to the DC terminals (P (+), N (-)).

Otherwise fire, accident or damage could
occur.

• The inverter, motor and wiring generate

electric noise. Take care of malfunction of
the nearby sensors and devices.

Otherwise an accident could occur.

WARNING

• When connecting the inverter to the

power supply, add a circuit breaker for
circuit protection and earth leakage breaker
in the path of power supply.

Otherwise fire could occur.

• This equipment must be earthed.

Otherwise electric shock or fire could
occur.

• Both screws of grounding terminals of

VXSM75-1/550-3 need to be tightened up
securely even if one grounding terminal is
not used.

Otherwise electric shock or fire could
occur.

• Qualified electricians should carry out

wiring.

Otherwise electric shock could occur.

• Perform wiring after checking that the

power supply is turned off.

Otherwise electric shock could occur.

• Be sure to perform wiring after installing

the main body of the inverter.

Otherwise electric shock or injuries
could occur.

Operation

CAUTION

• Do not turn the main circuit power
on or off to start or stop inverter

operation.

Otherwise failure could occur.

• Do not touch the heat sink and braking
resistor because they become very hot.

Otherwise burns could occur.

• Setting the inverter to high speeds is
easy. Check the performance of the motor
and machines before changing the setting.

Otherwise injuries could occur.

• The brake function of the inverter does
not provide mechanical holding means.

Injuries could occur.

WARNING

• Be sure to install the terminal cover
before turning the power on. Do not

remove the cover during power application.

Otherwise electric shock could occur.

• Do not operate switches with wet hands.

Otherwise electric shock could occur.

• If the retry function has been selected, the
inverter may automatically restart
according to some causes after tripping.

(Design the machine so that human safety is
ensured after restarting.)

Otherwise an accident could occur.

• If the torque limit function has been

selected, the inverter may operate at an
acceleration/deceleration time or speed
different from the set ones. Design the
machine so that safety is ensured even in
such cases.

Otherwise an accident could occur.

• The STOP key is only effective when

function setting has been established to
make the STOP key enable. Prepare an
emergency stop switch separately.

Otherwise an accident could occur.

• If an alarm reset is made with the

operation signal turned on, a sudden start
will occur. Check that the operation signal
is turned off in advance.

Otherwise an accident could occur.

• Do not touch the inverter terminals when

power to the inverter is applied even if the
inverter has stopped.

Otherwise electric shock could occur.

Safety Instructions iii

Maintenance and inspection and
parts replacement

Disposal

CAUTION

• Handle the inverter as an industrial
waste when disposing of it.

Otherwise injuries could occur

Others

WARNING

• Never remodel.

Otherwise electric shock or

injuries could occur.

WARNING

• Turn the power off and wait for at

least five minutes before starting

inspection. (Further, check that the charge
lamp is unlit, and check the DC voltage
across the P (+) and N (-) terminals to be
lower than 25Vdc.)

Otherwise electric shock could occur.

• Maintenance and inspection and parts
replacement should be made only by
qualified persons. (Take off watch, rings
and other metallic matter before starting
work.) (Use insulated tools.)

Otherwise electric shock or injuries
could occur.

GENERAL PRECAUTIONS

Drawings in this manual may be illustrated
without covers or safety shields for
explanation of detail parts. Restore the
covers and shields in the original state and
observe the description in the manual
before starting operation.

iv Safety Instructions

Conformity to Low Voltage Directive in EU
[Available only for the products with CE or TÜV mark]

CAUTION

1. Safe separation for control

interface of this inverter is provided
when this inverter is installed in overvoltage
category II. PELV(Protective Extra Low
Voltage) circuit or SELV(Safety Extra Low
Voltage) circuit from external controller is
connected to the interface directly.

2. Basic insulation for control interface of

this inverter is provided when this
inverter is installed in overvoltage
category III. An isolation transformer has
to be installed between power supply
mains and this inverter when SELV
circuit from external controller is
connected to this inverter directly.
Otherwise supplementary insulation
between control interface of this inverter
and environment must be provided.

3. The ground terminal G should always

be connected to the ground. Don't use
only RCD as the sole method of electric
shock protection.

Dimensions of external PE conductor
should be same as dimensions of input
phase conductor and capable for
possible fault.

4. Use MCCB or MC that conforms to EN or

IEC standard.

5. Where RCD (Residual-current-operated

protective device) is used for protection
in case of direct or indirect contact, only
RCD of type B is allowed on the supply
side of this EE (Electric equipment).
Otherwise another protective measure
shall be applied such as separation of
the EE from the environment by double
or reinforced insulation or isolation of EE
and supply system by the transformer.

6. The inverter has to be installed in

environment of pollution degree 2. If the
environment is pollution degree 3 or 4,
the inverter has to be installed in a
cabinet of IP54 or higher.

7. Use a cable according to EN60204

Appendix C.

8. Install the inverter, AC or DC reactor,
input or output filter in an enclosure , to
prevent a human body from touching
directly this equipment.

1) When a person can touch each

connecting terminal or live parts,
install the inverter, AC or DC reactor,
input filter in an enclosure with
minimum degree of protection of
IP4X.

2) When a person can not easily touch a

connecting terminal or live parts,
install the inverter, AC or DC reactor,
input filter in an enclosure with a
minimum degree of protection of
IP2X.

9. It is necessary to install the inverter in
appropriate method using an
appropriate RFI filter to conform to the
EMC directive. It is customer's
responsibility to check whether the
equipment ,the inverter is installed in,
conforms to EMC directive.

10.Do not connect copper wire to
grounding terminal directly. Use crimp
terminal with tin or equivalent plating to
reduce electrochemical potential.

11. Do not remove the keypad panel before
disconnecting power and do not
insert/remove the extension cable for
keypad panel remote operation while
power is on. Confirm that the extension
cable is securely latched to keypad
panel and inverter before power is on.

A supplementary isolation is required for
the extension cable when the inverter is
installed in overvoltage category III.

12. Basic insulation for control interface of
this inverter is provided when the
inverter is used at altitude over 2000m.
The use at altitude over 3000m is not
permitted.

13. The supply mains neutral has to be
earthed for VXSM400-3/550-3.

Safety Instructions v

Caution for UL/cUL requirement
[Available only for the products with UL/cUL mark]

CAUTION

1. [WARNING] Take care of electric
shock. Be sure to turn the inverter off

before starting work.

2. [CAUTION] When the charge lamp is lit,
the inverter is still charged at a
dangerous voltage.

3. [WARNING] There are two or more live
parts inside the inverter.

4. The inverter is approved as a part used
inside a panel. Install it inside a panel.

5. Perform wiring to the input, output and
control terminals of the inverter, referring
to the table below. Use UL certified round
crimp terminal to the input and output
terminals with insulation cover or
covered with reduced tube to obtain the
insulation distance. Use a crimping tool
recommended by the terminal
manufacturer when fabricating crimp
terminals.

6. Install a fuse or circuit breaker between
the power supply and the inverter,
referring to the table below.

1) Use copper wires of allowable

maximum temperature 60 or 75
degree C.

2) Use UL certified AC600V "Class J

fuse."

7. The inverters VXSM40-1 to 220-1 are
suitable for use on a circuit capable or
delivering not more than 20,000 rms
symmetrical amperes, 240V maximum.

8. The inverters VXSM40-3 to 750-3 are
suitable for use on a circuit capable or
delivering not more than the following
symmetrical amperes, 480V maximum.
When a fuse is installed : 20,000A
When a circuit breaker is installed :
5000A

9. VXSM*** is an open type inverter.

10. A class 2 circuit wired with class 1 wire.

Tightening torque Applicable wire

[N-m] diameter [AWG] (mm

2) 1)

L1/R, L2/S

L1/R,L2/S L3/T

Fuse

2)

Inverter type L3/T L1/L, L2/N or

L1/L, L2/N Control G Control Breaker

P1, P(+) section P1, P(+) section [A]
DB, N(-) DB, N(-)

U,V,W U,V,W

6

1.2
14 (2.1)

6

VXSM40-1

0.4

20 10

VXSM75-1 (0.5) 15
VXSM150-1 1.8 12 (3.3) 30
VXSM220-1 10 (5.3) 40

VXSM40-3

6

VXSM75-3
VXSM150-3 1.8 14 (2.1) 20 10
VXSM220-3 0.4 (0.5) 15
VXSM400-3 20
VXSM550-3

3.5

12 (3.3) 30

VXSM750-3 10 (5.3) 40

1 Before Using the Inverter

1-1 Receiving Inspection

Unpack and check the following items.
If you have any problems with the product,
contact IMO Precision Controls Ltd.
(1) Check the ratings nameplate to confirm that
the delivered product is the ordered one.

TYPE: Type of inverter
VXSM 40 -1

Version
Power voltage system:

-1: Single-phase 200V
class

-3: Three-phase 400V
class

Nominal applicable
motor capacity:
example
40 = 0.4kW
220 = 2.2kW

400.= 4.0kW
Product type

1-1 Before Using the Inverter

1

SOURCE: Number of input phases, input

voltage, input frequency, input
current

OUTPUT: Number of output phases, rated

output capacity, rated output
voltage, output frequency range,
rated output current, overload
current rating

SER. NO.: Product number

0 1 0113R0001

Serial number of production
lot

Production month: 1 to 9:
January to September; X, Y,
or Z: October, November, or
December

Production year: Last digit of
year

(2) Check for breakage, missing parts, and

dents or other damage on the cover and the
main body given during transportation.

(3) Instruction manual for inverter is delivered with

the unit or is available on www.imopc.com.

1-2 External view of Product

(1-1) Overall view (4.0kW or below)

Keypad panel mounting screw

Keypad panel

Ratings nameplate

Intermediate cover

Control terminal block cover

Main circuit terminal block cover

VXS

M40-

1

1PH 200-240V

50/60

Hz 6.4A

010113R00

1

3

PH 0.4kW 200-230V 0.2-400Hz 3.0A

1

50%

1mi

n

Before Using the Inverter 1-2

1

(1-2) Overall view (5.5,7.5kW)

(2-1) View of wiring part(4.0kW or below)

A barrier is provided in the main circuit terminal
block cover for the P1, P (+), DB and N (-) cable
port. Cut the barrier before wiring.

Keypad panel mounting screw

Keypad panel

Intermediate cover

Ratings nameplate

Terminal block cover

Control cable port

P1, P (+), DB,
N (-) cable port

L1/R, L2/S, L3/T
(L1/L, L2/N), U, V, W
cable port

Grounding cable port

1-3 Before Using the Inverter

1

(2-2) View of wiring part(5.5,7.5kW)

A barrier is provided in the cable cover for the
P1, P (+), DB and N (-) cable port. Cut the
barrier before wiring.

1-3 Handling the Product

(1) Removing the control terminal block

cover(4.0kW or below)

While lightly pushing the sides of the control
terminal block cover at the catches, lift the cover
in the procedure shown in Fig. 1-3-1 to remove
it.

Fig. 1-3-1 Removing the control terminal block

cover

Terminal block cover

Control cable port

L1/R, L2/S, L3/T cable port

P1, P (+), DB, N (-) cable port

U, V, W cable port

Cable cover

Grounding cable port

Before Using the Inverter

1-4

1

(2) Removing the main circuit terminal block

cover(4.0kW or below)

While lightly pushing the sides of the main
circuit terminal block cover at the catches, slide
toward you in the procedure shown in Fig. 1-3-2
to remove it.

(3) Removing the terminal block

cover(5.5,7.5kW )

Loose the screws indicated below and while
lightly pushing the sides of the terminal block
cover at the catches, lift the cover in the
procedure shown in Fig. 1-3-3 to remove it.

Fig. 1-3-2 Removing the main circuit terminal block

cover

1-5 Before Using the Inverter

1

(4) Removing the keypad panel

Loosen the keypad panel mounting screws and
remove the keypad panel in the procedure
shown in Fig. 1-3-4. During the procedure,
slowly remove the keypad panel right toward the
top. If the keypad panel is handled abruptly, the
connector will be broken.

Mounting screw (M3)

Fig. 1-3-4 Removing the keypad panel

Reverse the procedures to mount the terminal
block cover and keypad panel.

Before Using the Inverter 1-6

1

1-4 Transportation

Always hold the main unit when carrying the
inverter.
If covers or parts are held, the inverter may be
broken or it may drop.

1-5 Storage

To store temporarily

Store the inverter in an environment described
in Table 1-5-1.

Table 1-5-1 Storage environment

Item Specifications

Ambient -10~+50

temperature degree C

Storage

(Note 1)

-25~+65

temperature degree C

Relative 5~95%
humidity

(Note 2)

Atmosphere The product must not be exposed

to dust, direct sunlight, corrosive
or flammable gases, oil mist,
vapor, water drops or vibration.
There must be little salt in the
atmosphere.

Atmospheric 86~106kPa

pressure (During storage)

70~106kPa
(During transportation)

Note 1: The storage temperature is for a short
time during transportation or the like.

Note 2: Even if the humidity is within the

requirements of the specifications,
places with abrupt temperature
changes are subject to condensation
or freezing. Avoid storing the inverter
in such places.

(1) Do not place the inverter directly on

the floor.

(2) If the ambient atmosphere is adverse,

wrap the inverter in a vinyl sheet or the
like when storing.

(3) If humidity may give an ill effect, add a

drying agent (such as silica gel) in the
package prepared as described in
item (2).

Places not subjected
to abrupt
temperature changes
or condensation or
freezing

To store for a long time

The long-term storage method of the inverter
varies largely according to the environment of
the storage site. General storage methods are
described below.

(1) The storage site must satisfy the

requirements of specifications for
temporary storage. However, for storage
exceeding three months, the upper limit of
the ambient temperature shall not exceed
30 °C. This is for the prevention of
deterioration of electrolytic capacitors left
turned off.

(2) The package must be air tight so that

moisture will not enter. Add a drying agent
inside the package to contain the relative
humidity inside the package within 70%.

(3) The inverter installed on a unit or control

panel and left is likely to be exposed to
moisture and dust. If this is the case,
remove the inverter and move it to a
preferable environment.

(4) Electrolytic capacitors left turned off for an

extended period of time deteriorate. Do not
store for one year or more without turning
the power on.

2-1 Installation and Connection

2

Item Specifications
Site Indoors
Ambient -10 to +50 degree C

temperature
Relative 5 to 95% (without condensation)

humidity
Atmosphere The inverter must not be exposed to

dust, direct sunlight, corrosive
gases, oil mist, vapor or water drops.

There must be little salt.
No condensation occurs due to
abrupt temperature changes.

Altitude 1,000 m max. (Refer to Table 2-1-2

for altitudes exceeding 1000 m.)

Atmospheric 86 to 106 kPa
pressure

Vibration 3mm 2 to 9 Hz

9.8m/s29 to 20 Hz
2m/s

2

20 to 55 Hz

1m/s

2

55 to 200 Hz

Impact <15g (IEC 61068-2-27)

2. Installation and
Connection

2-1 Operating Environment

Install the inverter in an environment described
in Table 2-1-1.

Table 2-1-1 Operating environment

2-2 Installation Method

(1) Securely mount the inverter in the upright

position on a rigid structure so that the
"VXSM" characters face front. Avoid
mounting the inverter upside down or avoid
mounting horizontally.

(2) Allow clearances for cooling air shown in

Fig. 2-2-1 to cool down the inverter which
generates heat during operation. The
generated heat is radiated upward. Do not
install the inverter below a heat sensitive
device.

WARNING

Install the inverter on a nonflammable
material such as metal.

Otherwise fire could occur.

CAUTION

Do not allow lint, paper, wood chips,

dust, metallic chips or other foreign
matter in the inverter or do not allow them
attached to the heat sink.

Otherwise fire or an accident could occur.

(3) The temperature of the heat sink rises to

about 90 degrees C during operation of the
inverter. Mount the inverter on a base made
of a material withstanding the temperature
rise.

Fig. 2-2-1

Above

Left Right

100mm

10mm

10mm

100mm

Below

VXSM

(4) When installing the inverter inside a control

panel or the like, take full consideration for
ventilation so that the ambient temperature
of the inverter does not exceed the
specification requirements. Do not install
the inverter in a poorly ventilated small
enclosure.

(5) When storing multiple inverters inside a

single unit or inside a control panel,
horizontal installation is recommended to
reduce mutual temperature effects. When
an vertical layout is adopted for an
unavoidable reason, install a partition plate
or the like between inverters to isolate the
heat of the lower inverter.

Altitude Output current attenuation ratio
1000 m or less 1.00
1000-1500m 0.97
1500-2000m 0.95
2000-2500m 0.91
2500-3000m 0.88

Table 2-1-2 Output attenuation ratio in relation to altitude

Installation and Connection 2-2

2

WARNING

• Be sure to connect the grounding
cable before applying power.

Otherwise electric shock or fire could
occur.

• Qualified electricians should carry out
wiring.

Otherwise electric shock could occur.

• Perform wiring after checking that the
power supply is turned off.

Otherwise electric shock could occur.

2-3 Connection

Remove the control terminal block cover to
connect the control terminal block. Remove the
main circuit terminal block cover to connect the
main circuit terminal block. Correctly connect
cables taking care of the following precautions.

2-3-1 Basic Connection

(1) Be sure to connect the power cables to

main circuit power terminals L1/R, L2/S and
L3/T or L1/L,L2/N of the inverter. If the
power cables are connected to other
terminals, the inverter will be broken. As
well, check the source voltage for the
allowable voltage range specified on the
nameplate and so on.

(2) Connect the grounding terminal according

to national or local regulations to prevent
electric shock, fire or other accidents and to
reduce electric noise.

(3) Use reliable crimp terminals for connection

of cables to the terminals.

(4) After finishing wiring, check the following.

a. Check if the cables are connected

correctly.
b. Check if there is no failure of connection.
c. Check if terminals or cables are short

circuited or there is a ground fault.

(5) To change connection of an inverter having

been turned on
The smoothing capacitor in the direct
current part of the main circuit takes time to
be discharged after it is turned off. To avoid
danger, check the DC voltage (across main
circuit terminals P (+) and N (-)) for a safety
voltage (25 Vdc or lower) using a multi­meter, after the charge lamp is unlit. Wait
until the residual voltage is discharged
before shorting a circuit, to avoid being hit
by sparks caused by electric discharge.

2-3 Installation and Connection

2

*1) Supply a source voltage

suitable for the rated
voltage of the inverter.

*2) Optional part. Use when

necessary.

*3) Peripheral equipment.

Use when necessary.

*4) To connect a DC reactor

(DCR) for power factor
correcting, remove the
jumper between the P1
and P (+) terminals.

Basic connection diagram

Enclosure

Installation and Connection 2-4

2

2-3-2 Connection of Main Circuit and Grounding Terminal

Symbol Name of terminal Description

L1/R,L2/S,L3/T Main circuit power input Connects a 3-phase power supply.

L1/L,L2/N Main circuit power input Connects a 1-phase power supply.

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

P1,P(+) For DC reactor Connects an optional DC reactor.

P(+),DB For external braking Connects an optional external braking resistor.

resistor

P(+),N(-) DC link circuit terminal Connected to DC link circuit.

G grounding Grounding terminal of the inverter chassis

(housing). Connect to the protective ground.

(1) Main circuit power input terminal (L1/R,

L2/S, L3/T,L1/L,L2/N)
a. Connect the main circuit power input

terminals to the power supply through a

circuit breaker for circuit (wiring)

protection or an earth leakage breaker.

There is no need to match the phase

sequence.
b. It is recommended to connect a

magnetic contactor to disconnect the

inverter from the power supply to

prevent a failure or accident from

becoming serious upon activation of the

protective function of the inverter.
c. Do not turn the main circuit power

supply on or off to start or stop the

inverter. Instead, use control circuit

terminals FWD and REV or the RUN

and STOP keys on the keypad panel. If

it is unavoidable to turn the main circuit

power supply on or off to start or stop the

inverter, limit the frequency to once an

hour or fewer, if possible.
d. Do not connect to a single-phase power

supply for 3-phase input inverter.

(2) Inverter output terminals (U, V, W)

a. Connect these terminals to a 3-phase

motor with the correct phase sequence.
If the direction of rotation does not
match the operation direction, change
arbitrary two cables among the U, V and
W phases.

b. Do not connect a phase advance

capacitor or surge absorber to the
inverter output.

c. If the wiring length between the inverter

and the motor is extremely long, the
stray capacity between cables causes a
high frequency current, possibly tripping
the inverter due to an overcurrent,
increasing the leakage current, or
deteriorating the current detection
accuracy to cause deterioration of the
performance or other phenomena. To
prevent such trouble, limit the wiring
length of the motor to 50 m for 4.0 kW or
a smaller output or to 100 m for a larger
output.

Note: When a thermal relay is installed in the
path between the inverter and the motor, or
especially in the case of a 400V system, the
thermal relay may malfunction even with a
wiring length shorter than 50 m. In such a case,
add an OFL filter or lower the Motor sound

adjustment (carrier frequency) of the inverter. ...

Function code F26 Motor sound adjustment.

Table 2-3-1 Connection of Main Circuit and Grounding Terminal

2-5 Installation and Connection

2

(3) DC reactor connecting terminals (P1, P (+))

a. Use this terminal to connect a DC

reactor (option). Remove the jumper
connected in the factory before
connecting the DC reactor.

b. Do not remove the jumper if no DC

reactor is used.
Cut the barrier in the main circuit
terminal block cover for the P1, P (+),
DB and N (-) cable port when connecting
wiring.

(4) External braking resistor connecting

terminals (P (+), DB)
VXSM is not equipped with a braking
resistor. An external braking resistor
(option) is necessary for frequent operation
or heavy duty inertia load operation to
enhance the braking performance.
a. Connect the P (+) and DB terminals of

the external braking resistor to the P (+)
and DB terminals of the inverter.

b. Arrange devices so that the wiring

length is within 5 m and twist or closely
(in parallel) place the two cables.

(5) Inverter grounding terminal ( G )

Ground the grounding terminal G for
safety and noise reduction without fail. The
metallic frame of electrical equipment must
be grounded in accordance with national
regulations to avoid electric shock, fire and
other disasters

Fig. 2-3-1 DCR connection diagram

Fig. 2-3-2 Connection diagram

Inverter

P(+)

P1

DCR

CAUTION

• Check that the number of phases

and the rated voltage of the product
agrees with the number of phases and the
voltage of the AC power supply.

• Do not connect the AC power cables to the
output terminals (U, V, W).

Otherwise injuries could occur.

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

Otherwise fire could occur.

Installation and Connection 2-6

2

2-3-3 Connection of Control Terminals

Table 2-3-2 shows the functions of the control
circuit terminals. The method of connecting

control function terminals varies according to
the function setting. Refer to the connection
method for the function.

Table 2-3-2 Functions of control circuit terminals

Classifi- Terminal
cation symbol Terminal name Description of function

13 Potentiometer power +10 Vdc power supply for frequency setting POT.

supply (POT: 1 to 5 kohm).

12 Voltage input (1) The frequency is set according to the external

analog input voltage command.

• 0 to +10 Vdc / 0 to 100%

• Reversible operation using +/- signal: 0 to +/-10

Vdc / 0 to 100%
Analog • Inverse mode operation: +10 to 0 Vdc / 0 to 100%
input (2) The PID control feedback signal is input.

* Input resistance: 22 kOhm

C1 Current input (1) The frequency is set according to the analog

input current command.

• 4 to 20 mAdc / 0 to 100%

• Inverse mode operation: 20 to 4 mAdc / 0 to 100%

(2) The PID control feedback signal is input.

* Input resistance 250 ohm

11 Common Common for analog signals

FWD Forward operation Forward operation with FWD-P24 ON and

command deceleration and stop with FWD-P24 OFF.

REV Reverse operation Reverse operation with REV-P24 ON and

command deceleration-stop with REV-P24 OFF.

X1 Digital input 1 A coast-to-stop command from an external
X2 Digital input 2

device, external alarm, alarm reset, multi-step

X3 Digital input 3

frequency selection and other functions can be

X4 Digital input 4

assigned to the X1 through X5 terminals. Refer to

X5 Digital input 5

the terminal function E01 to 05 setting method in

section 5-2 Detail Description of Each Function.

<Digital input circuit specification>

Digital
input

CM Common Common for digital input

Item min. typ. Max
Operation Level OFF 0V - 2V
voltage Level ON 22V 24V 27V
Operation current at ON - 4.2mA 6mA
Allowable leakage

current at OFF

- - 0.5mA

2-7 Installation and Connection

2

Classifi- Terminal

cation symbol Terminal name Description of function

FM Analog monitor The monitor signal for analog DC voltage (0 to +10

Vdc) is output. The signal description can be
selected from the following.

• Output frequency1 (before slip compensation)

• Output frequency2 (after slip compensation)

• Output current • Output voltage

• Output torque • Load factor

Analog • Input power • PID feedback value
output/ • DC link circuit voltage

pulse * Allowable connection impedance: min. 5 k ohm

output

Pulse rate monitor The monitor signal is output according to the pulse

voltage. The signal description is the same as the
FMA signal.
* Allowable connection impedance: min. 5 k ohm
Use SW1 on the control board and function code
F29 to change between the analog monitor and
Pulse rate monitor.

(FMA: analog monitor, FMP: Pulse rate monitor)
Y1E Transistor output 1 The RUN signal, frequency equivalence signal,
Y2E Transistor output 2

overload early warning signal and other signals are

output to arbitrary ports at a transistor output.

Refer to terminal function E20 to 21 setting

methods in section 5-2 Detail Description of Each

Function.

<Transistor output circuit specification>

Transistor

output

CMC Common Common for transistor output signal. Isolated from

(Transistor output) terminals CM and 11.

P24 DC voltage supply Power supply for transistor output load. (24 Vdc 50

mAdc Max.) (When using P24, short the CMC and

P24 terminals) (If the P24 terminal is overloaded or

connected with the CM terminal, the inverter trips

with Er3 indication. To reset, remove external

causes and, after several minutes, turn the inverter

on again.)

30A,30B, Alarm relay output When the inverter is stopped with an alarm, a relay

30C contact output (1C) is issued.

Relay Contact capacity: 48 Vdc 0.5 A

output (When complying with UL/cUL:42Vdc 0.5A)

Selection between excitation upon an alarm or

excitation during normal operation is possible.

Item min. typ. Max
Operation Level OFF - -1V -2V
voltage *1 Level ON - -24V -27V
Max. load current at ON - - -50mA
Leakage current at OFF - - -0.1mA

Operation Voltage

Current

Installation and Connection 2-8

2

(2) Digital input terminals (FWD, REV, X1

through X5, P24)
a. Generally the digital input terminals

(FWD, REV, X1-5) are turned on or off in
relation to the P24 terminal.

b. To use contact input, use a reliable

contact free from poor contact.

(3) Transistor output terminals (Y1E-Y2E,

CMC)
a. Circuit configuration shown in Table 2-3-

2 for transistor output is adopted. Take
care of the polarity of the external power
supply.

b. To connect a control relay, connect a

surge absorbing diode across the coil of
the relay.

(4) Others

a. Route the wiring of the control terminals

as far from the wiring of the main circuit
as possible. Otherwise electric noise
may cause malfunctions.

b. Fix the control cables inside the inverter

to keep them away from the live parts of
the main circuit (such as the terminal
block of the main circuit).

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

a. Because weak analog signals are

handled, these signals are especially
susceptible to external noise effects.
Route the wiring as short as possible
(within 20 m) and use shielded cables. In
principle, ground the shield of the
shielded cable; if effects of external
inductive noises are considerable,
connection to terminal 11 may be
effective.

b. Use twin contacts relay for weak signals

if relay is used in the circuit. Do not add
a contact to terminal 11.

c. When the inverter is connected with an

external device outputting the analog
signal, a malfunction may be caused by
electric noise generated by the inverter
according to some type of the circuit of
the device. If this happens, connect a
ferrite core or capacitor to the device
outputting the analog signal.

WARNING

If the control cables touch the live part

of the main circuit, the insulation
sheath of the control cable, insulation of
which is not reinforced, may be broken to
cause a high voltage of the main circuit to be
fed to the control signal. This is banned in
the low voltage directive models for Europe.

Electric shock could occur.

CAUTION

Electric noise may be generated by the

inverter, motor or wiring. Take care of
malfunctions of the nearby sensors and devices.

An accident could occur.

Fig. 2-3-4 Countermeasure against electric noise

(example)

Fig. 2-3-3

2-9 Installation and Connection

2

2-3-4 Terminal Layout

(1) Main circuit terminal block

Inverter type Main circuit terminal drawing

VXSM40-1

Screw size : M3.5
Tightening torque : 1.2N.m

VXSM75-1

Screw size : M4
Tightening torque : 1.8N.m

VXSM40-3
VXSM75-3
VXSM50-3

VXSM220-3

Screw size : M4
Tightening torque : 1.8N.m

VXSM150-1
VXSM220-1

Screw size : M4
Tightening torque : 1.8N.m

VXSM400-3

Screw size : M4
Tightening torque : 1.8N.m

L1/L L2/N U V W

DB P1 P(+) N(-)

G G

G G

L1/L L2/N U V W

DB P1 P(+) N(-)

G

G

L1/R L2/S L3/T U V W

DB P1 P(+) N(-)

G

G

L1/L L3/N DB P1 P(+) N(-) U V W

G G

L1/R L2/S L3/T DB P1 P(+) N(-) U V W

Installation and Connection 2-10

2

Inverter type Main circuit terminal drawing

VXSM550-3
VXSM750-3

Screw size : M5
Tightening torque : 3.5N.m

G G

L1/R L2/S L3/T DB P1 P(+) N(-) U V W

(1) Main circuit terminal block(Continued)

(2) Control terminal block

Screw size: M2.5
Tightening torque: 0.4N◊m

30A 30B Y1E C1 FM X1 X2 X3 X4 X5 CM

30C Y2E CMC 11 12 13 CM FWD REV CM P24

2-11 Installation and Connection

2

*1 The applicable frame and series of the model of

the molded case circuit breaker (MCCB) and
earth leakage breaker (ELCB) vary according to
the capacity of the transformer of the equipment.
For details of selection, refer to the relevant
technical documents.

*2 The recommended cable size for the main circuit

is PVC cable at ambient temperature 40 degree
C specified in Appendix C of EN 60204

*3 The power supply impedance without a reactor

is considered to be the equivalent of 0.1% of the
inverter capacity, with 10% current unbalance
accompanied by the voltage unbalance.

*4 Use crimp terminals with an insulating cover.

2-3-5 Applicable Devices and Cable Sizes for Main Circuit

Molded case circuit Recommended wire size [mm2]
breaker (MCCB) or

Nominal

earth leakage

Input circuit*

2

Output

DCR*

2

Inverter applied

circuit breaker

[L1/R,L2/S,L3/T] circuit*

2

circuit Control

type motor

(ELCB)

*

1

[L1/L, L2/N] [U, V, W] [P1]

wiring

[kW]

Rated current [A]

G [P(+)]

With Without With Without DB

DCR reactor*

3

DCR reactor*

3

VXSM40-1 0.4 6 10

2.5

VXSM75-1 0.75 10 16 2.5 2.5

0.5

VXSM150-1 1.5 16 25 4

2.5

2.5

VXSM220-1 2.2 25 32 4 6 (DB)

4

(Others)

VXSM40-3 0.4

6

VXSM75-3 0.75 6
VXSM150-3 1.5 10
VXSM220-3 2.2 10 16 2.5 2.5 2.5 2.5 0.5
VXSM400-3 4.0
VXSM550-3 5.5 16 25 4
VXSM750-3 7.5 20 32 6

Table 2-3-4 Selection of peripheral devices

Operation 3-1

3

3. Operation

3-1 Inspection and Preparation
Before Operation

Check the following before starting operation.
(1) Check if connection is correct.

Especially check if the power cables are
connected to inverter output terminals U, V
and W and that the grounding cable is
grounded without fail.

(2) Check for short circuits between terminals

and exposed live parts and ground faults.

(3) Check for loose terminals, connectors and

screws.

(4) Check if the motor is separated from

mechanical equipment.

(5) Turn the switches off so that the inverter

does not start or operate erroneously at
power-on.

(6) After the power is turned on, check the

following.
a. Check if the keypad panel shows an alarm.
b. Check if the fan built in the inverter rotates.
(1.5 kW or above)

3-2 Operation Method

There are various operation methods. Refer to
chapter 4 "Keypad Panel" and chapter 5
"Selecting Functions" to select the method most
suitable for the purpose and operation
specification. Table 3-2-1 shows general
operation methods.

3-3 Test Operation

After checking for errors in section 3-1, perform
a test operation.
In the factory shipment state, the inverter is in
the keypad panel operation mode.
(1) Turn the power on and check that the LED

blinks while indicating the 0.00 Hz

frequency.
(2) Using the key, set the frequency to a low

frequency such as 5 Hz.
(3) To turn forward: F02 = 2

To reverse: F02 = 3
After setting the above, press the key to start
operation. To stop, press the key.

Fig. 3-1-1 Inverter connection diagram

Table 3-2-1 General operation methods

WARNING

• Be sure to install the terminal cover
before turning the power on.

• Do not remove the cover during power
application.

• Do not operate switches with wet hands.

Otherwise electric shock could occur.

(4) Check the following points.

a. Check if the direction of rotation is correct.
b. Check for smooth rotation without motor

humming or excessive vibration.

c. Check for smooth acceleration and

deceleration.

(5) Referring to function code P04 Motor 1

(auto tuning), tune the motor constant.
When no abnormality is found, raise the
operation frequency to check.
After checking for correct operation during the
above test operation, start normal operation.

Caution 1: If any abnormality is found to the
inverter or motor, immediately stop operation
and determine the cause referring to chapter 7
Troubleshooting.

Caution 2: If voltage is applied to the L1/R, L2/S
and L3/T or L1/L and L2/N main circuit power
supply terminals even after the inverter stops,
the inverter output terminals U, V and W are live
and you will receive electric shock when
touching the terminals. As well, the smoothing
capacitor is not discharged immediately after
the power is turned off and it takes time for the
capacitor to be discharged.
To touch the electric circuit after turning the
power off, check that the charge lamp is unlit
and check for safe voltage using a multimeter.

Operation Frequency Operation

method setting command

Operation Keypad keypad panel

using keypad panel keys keys

panel

,,

Contact input

,

(switch),

Operation Potentiometer terminals FWD-

using external or analog voltage P24, terminals

signal terminal current or REV-P24

multistep speed

operation

V

RUN STOP

V

V

V

V

RUN

STOP

➀ Digital display

Various function codes and data codes for
programming are shown.
The output frequency, output current and
other data are displayed during operation,
and the cause of a trouble is displayed
using codes when protective function
works.

➁ Program (PRG)/RESET key

Press this key to switch over between the
regular operation mode and programming
mode. Use this key to reset an alarm
stopping state after activation of a protective
function.

➂ Unit and operation mode display

The unit of the data displayed at the digital
display is indicated with an LED. The
program mode is indicated. The PANEL
CONTROL lamp lights up in the keypad
panel operation mode.

➃ RUN key

Press this key to start operation. An LED
lights up during operation. When data code

= , the key does not

function.

➄ STOP key

Press this key to stop operation. When data
code = , this key does not
function.

➅ Up/down keys

Press these keys to increase or decrease
the frequency or speed.
In the programming mode, use these keys
to change the function code or data setting.

➆ Function/Data key

Use this key to switch over between
frequency display, output current display
and other display in the regular operation
mode. In the programming mode, use this
key to retrieve or write various function
codes and various function data.

120F

120F

4-1 Keypad Panel

4

(1) Monitor display mode

In the regular operation mode, press the
key to switch between frequency
display, output current display and other
display.

4. Keypad Panel

The keypad panel is provided with various
functions such as operation (frequency setting
and start/stop commands) from the keypad
panel, monitor and alteration of function code
data, and various confirmation functions.
Be familiar with the operation method of each
function before starting operation.

4-1 Appearance of Keypad Panel

➀➁

➆

➂

➅

➃

➄

FUNC
DATA

Output frequency *

1

000.6

Output current *

2

021.

Output voltage *

2

002

Synchronization
rotation speed *

2

0001

Line speed *

2

0001

*1: In the PID control mode (when function H20

is at "1" or "2"), the value is in the percent
display and the dot at the least significant
digit always lights up.

Example: 10%: , 100%:

*2: Press the , key during display of

these data to display the frequency setting.

0.0.010.0.1

V

V

Keypad Panel 4-2

4

(4) Function setting method

(2) Stopping operation

When is other than
press to start operation or press i
to stop operation. The direction of
rotation is as shown below.

= : Forward rotation
with FWD-CM ON, reverse rotation with
REV-CM ON

= : Forward rotation
(Inputs at the FWD and REV terminals
are ignored.)

= : Reverse rotation
(Inputs at the FWD and REV terminals
are ignored.)

320F

220F

020F

120F

Description of operation Operation procedure Display result

Initial state

- Start the program mode. Press the key.

- Select a setting or Press the or key.
monitoring function

- Have the data displayed. Press the key.

- Change the data. Press the or key.

- Store the data. Press the key.

- Exit from the program mode. Press the key.

(Or select another function.) (Press the or key.)

000.6

20F

2

1

10F

00F

000.6

PRG

RESET

PRG

RESET

V

RUN

STOP

FUNC
DATA

FUNC
DATA

V

V

V

V

V

(3) Changing the frequency

When is at , press
the key to increase the frequency or
press the key to decrease the
frequency. Press and hold the or

i key and press the key to increase

the frequency change speed.

Note) Do not turn the power off for five
seconds after performing a monitor change
or function setting. Otherwise Er1 will be
caused.

010F

FUNC
DATA

V

V

V

V

4-3 Keypad Panel

4

(5) Changing the function code

The function code consists of an alphabetic
character and a numeral. The alphabetic
character is defined for each of the function
groups.

Table 4-1-1 Major groups of function codes

Function code Function

F00~F42 Fundamental functions

E01~E41 Extension terminal functions
C01~C33 Control functions of frequency
P01~P10 Motor parameters
H01~H46 High performance functions
A01~A19 Alternative motor parameters

The function code changes each time
the or key is pressed. (Press and
hold the or key to continue to change
the function code.)
While pressing and holding the i
or key during function code change,
press the key to change to the next
group with another alphabetic character.
(Press the and keys to jump to the
top of the F, E, C, P, H or A code, or press
the and key to jump to the last of the
F, E, C, P, H or A code.)

Changing example:

+

+

4-1-1 Upon an Alarm

When an alarm occurs, the description
of the alarm is displayed. Press the i
or key during alarm display to display
the latest three alarms.
To display previous 4 alarms, select
function (Refer to H02 Trip
history.)

20H

24E13C

23C33C

10E20F

10F00F

4-1-2 Digital Frequency Setting Method

Press the or key at the operation
mode screen. The LED display changes
to the frequency setting, and the data
increases or decreases in the unit of the
least increment first. While the or i
key is held down, the changing digit
moves to the upper order for fast
changes. Further, while pressing and
holding down the or key, press
the key to increase the changing
speed further. No special operation is
necessary to store the new frequency
setting. The setting is automatically
stored when the inverter is turned off.

FUNC
DATA

V

V

PRG

RESET

PRG

RESET

PRG

RESET

V

V

V

V

V

V

V

PRG

RESET

V

VV

V

V

V

V

V

V

V

PRG

RESET

V

V V

Description of change during operation

: The data changed by the or key
takes effect on the inverter operation.
However, press the key to store the new
data.

Selecting Functions 5-1

5

V

V

5. Selecting Functions

5-1 Function Selection List

Table 5-1-1 Function selection list

F: Fundamental functions

Min. Factory

Name Setting range unit setting

F00 Data protection 0: Data change enabled

1: Data protected 1 0 X 0

F01 Frequency 0: Keypad operation

command 1 1: Voltage input (terminal 12)

2: Current input (terminal C1)
3: Voltage and current input
4: Voltage input with polarity (terminal 12) 1 0 x 0
5: Voltage input inverse mode

operation (terminal 12)

6: Current input inverse mode

operation (terminal C1)
7: UP/DOWN control mode 1
8: UP/DOWN control mode 2

F02 Operation method 0: Keypad operation (direction of

rotation: input at terminal block)
1: External signal (digital input) 1 2 x 0
2: Keypad operation (forward rotation)
3: Keypad operation (reverse rotation)

F03

Maximum frequency 1

50 to 400 Hz 1Hz 50 x 0

F04 Base frequency 1 25 to 400 Hz 1Hz 50 x 0
F05 Rated voltage 1 0V : Voltage proportional to the

(at Base frequency1)

source voltage is output.
80 to 240V(200V class) 1V 230 X 0
160 to 480V(400V class) 1V 400

F06 Maximum voltage 180 to 240V(200V class) 1V 230 X 0

(at Maximum 160 to 480V(400V class) 400

frequency 1)
F07 Acceleration time 1 0.01 to 3600 s 0.01s 6.00 6
F08 Deceleration time 1 0.01 to 3600 s 0.01s 6.00 6
F09 Torque boost 1 0: Automatic torque boost

1: Square reduction torque characteristics
2: Proportional torque characteristics 1 0 0
3 to 31: Constant torque characteristics

F10 Electronic thermal 0: Inactive

overload relay 1: Active (for general purpose motors) 1 1 0

for motor 1 (Select) 2: Active (for forced-ventilated motors)

F11 (level) 20 to 135% of the rated inverter current 0.01A

rated

motor current

6

F12

(Thermal time constant)

0.5 to 10.0 min. 0.1min 5.0 2

Function code

Change during

operation

RS485 Data format

User setting

: Press the or key to change the
data. The new data takes effect after the
key is pressed to store the data.

X : The data can be changed only while the

inverter is stopped.

V

V

FUNC
DATA

FUNC
DATA

Min. Factory

Name Setting range unit setting

F13 Electronic thermal 0: Inactive

overload relay 1: Active (for external braking resistor

(for braking resistor) DB__-2C/4C) 1 0 X 0

2: Active (for external braking resistor
TK80W : 0.1 to 2.2E11S-7
DB__-4C : 0.4 to 7.5E11S-4)

F14 Restart mode 0:Inactive (The inverter immediately

after momentary trips upon power failure.)

power failure 1:Inactive (The inverter trips after the

power failure is recovered.)
2:Active (The inverter restarts at the 1 0 X 0
frequency effective at the time of
power failure.)
3:Active (The inverter restarts at the
starting frequency.)

F15 Frequency limiter

(High) 0 to 400 Hz 1Hz 70 0
F16 (Low) 0 0
F17 Gain

(For frequency setting

signal) 0.0 to 200.0% 0.1% 100.0 2
F18 Bias frequency -400 to +400Hz 1Hz 0 1
F20 DC brake

(Starting frequency) 0.0 to 60.0Hz 0.1Hz 0.0 2
F21 (Braking level) 0 to 100% 1% 0 0
F22 (Braking time) 0.0 s (Inactive)

0.1 to 30.0s 0.1s 0.0 2

F23 Starting frequency

(Freq.) 0.1 to 60.0Hz 0.1Hz 0.5 X 2
F24 (Holding time) 0.0 to 10.0s 0.1s 0.0 X 2
F25 Stop frequency 0.1 to 6.0Hz 0.1Hz 0.2 X 2

Motor sound

(Carrier frequency) 0.75,1 to 15kHz 1kHz 15 0

(Sound tone) 0 to 3 1 0 0

5-2 Selecting Functions

5

Description of change during operation

: The data changed by the or key takes
effect on the inverter operation. However,
press the key to store the new data.

V

V

Function code

Change during

operation

RS485 Data format

: Press the or key to change the data.
The new data takes effect after the key is
pressed to store the data.

X : The data can be changed only while the

inverter is stopped.

V

V

FUNC
DATA

FUNC

DATA

User setting

Selecting Functions 5-3

5

Min. Factory

Name Setting range unit setting

F29 FMA and FMP 0: Analog output (FMA)

terminals 1: Pulse output (FMP)1 1 0 X 0

(Select)

F30 FMA

(Voltage adjust) 0 to 200% 1% 100 0

F31 (Function) 0:Output frequency 1 (before slip

compensation)
1:Output frequency 2 (after slip
compensation)
2:Output current
3:Output voltage 1 0 0
4:Output torque
5:Load factor
6:Input power
7:PID feedback value
8:DC link circuit voltage

F33 FMP

(Pulse rate) 300 to 6000p/s (Pulse count at 100%) 1p/s 1440 0
F34 (Voltage adjustment) 0%, 1 to 200% 1% 0 0
F35 (Function) 0 to 8 (Same as F31) 1 0 0
F36 30Ry operation mode 0: Excited when tripping

1: Excited during regular operation 1 0 X 0

F40 Torque limiter 1 20 to 200%

(Driving) 999: Inactive 1% 180 0

F41 (Braking) 0%: Automatic deceleration control

20 to 200%
999: Inactive 1% 150 0

F42 Torque vector 0: Inactive

control 1 1: Active 1 0 X 0

Description of change during operation

: The data changed by the or key takes
effect on the inverter operation. However,
press the key to store the new data.

V

V

Function code

Change during

operation

RS485 Data format

: Press the or key to change the data.
The new data takes effect after the key is
pressed to store the data.

X : The data can be changed only while the

inverter is stopped.

V

V

FUNC
DATA

FUNC
DATA

User setting

5-4 Selecting Functions

5

Min. Factory

Name Setting range unit setting

E01 X1 terminal function 0: Multistep frequency selection [SS1] 0 X 0

1: Multistep frequency selection [SS2]
2: Multistep frequency selection [SS4]
3: Multistep frequency selection [SS8]

E02 X2 terminal function

4:Acceleration/deceleration time

1X0

selection [RT1]
5: 3-wire operation stop command [HLD]
6: Coast-to-stop command [BX]
7: Alarm reset [RST]

E03 X3 terminal function

8: Trip command(External fault) [THR]

2X0

9: Frequency setting 2/1 [Hz2/Hz1] 1
10: Motor 2/ Motor 1 [M2/M1]
11: DC brake command [DCBRK]
12: Torque limiter 2/Torque limiter 1

E04 X4 terminal function

[TL2/TL1]

6X0

13: UP command [UP]
14: DOWN command [DOWN]
15: Write enable for KEYPAD [WE-KP]

E05 X5 terminal function

16: PID control cancel [Hz/PID]

7X0
17: Inverse mode changeover [IVS]
(terminal 12 and C1)
18: Link enable [LE]

E10 Acceleration time 2 0.01 to 3600s 0.01s 10.0 6
E11 Deceleration time 2 10.0 6
E16 Torque limiter 2 20 to 200% 1% 180 0

(Driving) 999: Inactive

E17 (Brake) 0%: Automatic deceleration control,

20 to 200% 1% 150 0
999: Inactive

E20 Y1 terminal function 0: Inverter running [RUN] 0 X 0

1: Frequency equivalence [FAR]
2: Frequency level detection [FDT]
3: Undervoltage detection signal [LV]
4: Torque polarity [B/D] 1

E21 Y2 terminal function 5: Torque limiting [TL] 7 X 0

6: Auto restarting [IPF]
7: Overload early warning [OL]7
8:Life time alarm [LIFE]
9:Frequency level detection 2 [FAR2]

E29 Frequency level 0.01 to 10.0s 0.01s 0.1 6

detection delay

E30 FAR function signa l0.0 to 10.0Hz 0.1Hz 2.5 2

(Hysteresis)

E31 FDT function signal 0 to 400Hz 1Hz 50 0

(Level)
E32 (Hysteresis) 0.0 to 30.0Hz 0.1Hz 1.0 2
E33 OL function signal 0: Electronic thermal overload relay

(Mode select) 1: Output current 1 0 0

E34 (Level) 20 to 200% of the rated inverter current 0.01A

rated

motor

curren

t 6
E35 (Timer ) 0.0 to 60.0s 0.1s 10.0 2
E40 Display coefficient

A 0.00 to 200.0 0.01 0.01 6

E41 B 0.00 to 200.0 0.01 0.00 6
E42 LED display filter 0.0 to 5.0s 0.1s 0.5 2

Function code

Change during

operation

RS485 Data format

User setting

E: Extension terminal functions

Selecting Functions 5-5

5

Min. Factory

Name Setting range unit setting

C01 Jump frequency

(Jump freq. 1) 0 to 400Hz 1Hz 0 0
C02 (Jump freq. 2) 0 0
C03 (Jump freq. 3) 0 0
C04 (Hysteresis) 0 to 30Hz 1Hz 3 0
C05 Multistep frequency

setting (Freq. 1) 0.00 to 400.0Hz 0.01Hz 0.00 4
C06 (Freq. 2) 0.00 4
C07 (Freq. 3) 0.00 4
C08 (Freq. 4) 0.00 4
C09 (Freq. 5) 0.00 4
C10 (Freq. 6) 0.00 4

C11 (Freq. 7) 0.00 4
C12 (Freq. 8) 0.00 4
C13 (Freq. 9) 0.00 4
C14 (Freq. 10) 0.00 4
C15 (Freq. 11) 0.00 4
C16 (Freq. 12) 0.00 4
C17 (Freq. 13) 0.00 4
C18 (Freq. 14) 0.00 4
C19 (Freq. 15) 0.00 4
C21 Timer operation 0: Inactive 1 0 X 0

1: Active
C22 Stage 1 0.00 to 3600s 0.01s 0.00 6
C30

Frequency command 2

0 to 8 (Same as F01) 1 2 X 0
C31

Analog setting signal

-5.0 to +5.0% 0.1% 0.0 3

offset adjustment

(Terminal 12)
C32 (Terminal C1) -5.0 to +5.0% 0.1% 0.0 3
C33

Analog setting

0.00 to 5.00s 0.01s 0.05 4

signal filter

Function code

Change during

operation

RS485 Data format

User setting

C: Control functions of frequency

Description of change during operation

: The data changed by the or key takes
effect on the inverter operation. However,
press the key to store the new data.

V

V

: Press the or key to change the data.
The new data takes effect after the key is
pressed to store the data.

X : The data can be changed only while the

inverter is stopped.

V

V

FUNC
DATA

FUNC

DATA

5-6 Selecting Functions

5

Min. Factory

Name Setting range unit setting

P01 Number of motor 1 2 to 14 2 4 X 0

poles

P02 Motor1 (Capacity) 0.01 to 5.5kW (4.0kW or less)

Nominal

0.01 to 11.00kW(5.5/7.5kW) 0.01kW

applied

X4

motor kW

P03 (Rated current) 0.00 to 99.9A 0.01A

standard

X6

rating

P04

_

Tuning) 0: Inactive

1: Active (%R1, %X)
2: Active (%R1, %X, Io) 1 0 X 12

P05 (Online tuning) 0: Inactive

1: Active 1 0 X 0

P06 (No-load current) 0.00 to 99.9A 0.01A

standard

X6

rating

P07

_

R1 setting

_

0.00 to 50.00% 0.01%

standard

4

rating

P08

_

X setting

_

0.00 to 50.00% 0.01%

standard

4

rating

P09 (Slip compensation 0.00 to 15.00Hz 0.01Hz 0.00 4

control 1)

P10 (Slip compensation 0.01 to 10.00s 0.01s 0.50 4

response time 1)

Function code

Change during

operation

RS485 Data format

User setting

P: Motor parameters

Description of change during operation

: The data changed by the or key takes
effect on the inverter operation. However,
press the key to store the new data.

V

V

: Press the or key to change the data.
The new data takes effect after the key is
pressed to store the data.

X : The data can be changed only while the

inverter is stopped.

V

V

FUNC

DATA

FUNC
DATA

Selecting Functions 5-7

5

Min. Factory

Name Setting range unit setting

H01 Total operation time Monitor only 10h 0 - 0
H02 Trip history Monitor only - ---- -

H03 Data initializing 0: Manual set value 1 0 X 0

(Data reset) 1: Return to factory set value
H04 Auto-reset (Times) 0: Inactive 1 to 10 times 1 time 0 0
H05 (Reset interval) 2 to 20s 1s 5 0
H06 Fan stop operation 0: Inactive 1 0 0

1: Active

H07 ACC/DEC pattern 0: Linear acceleration/deceleration 1 0 X 0

(Mode select). 1:S-curve acceleration/deceleration (weak)

2:S-curve acceleration/deceleration (strong)
3: Non-linear

H09 Start mode 0: Inactive 1 1 X 0

(Rotating motor1: Active (only when Auto-restart after

pickup mode) momentary power failure mode)

2: Active (All start mode)

H10 Energy-saving 0: Inactive 1 0 0

operation 1: Active

H11 Dec mode 0: Normal 1 0 0

1: Coast-to-stop

H12 Instantaneous 0: Inactive 1 1 X 0

overcurrent limiting 1: Active

H13 Auto-restart 0.1 to 5.0s 0.1s 0.1 X 2

(Restart time)

H14 (Frequency fall rate) 0.00 to 100.0Hz/s

0.01Hz/s

10.00 4

H20 PID control 0: Inactive 1 0 X 0

(Mode select) 1: Forward operation

2: Reverse operation

H21 (Feedback signal) 0: Terminal 12 (0 to +10 Vdc) input 1 1 X 0

1: Terminal C1 (4 to 20 mA) input
2: Terminal 12 (+10 to 0 Vdc) input
3: Terminal C1 (20 to 4 mA) input

H22 P (Gain) 0.01 to 10.00 times (1 to 1000%)

0.01 time

0.10 4

H23 I (Integral time) 0.0: Inactive 0.1s 0.0 2

0.1 to 3600s

H24 D (Differential time) 0.00: Inactive 0.01s 0.00 4

0.01 to 10.0s
H25 (Feedback filter) 0.0 to 60.0s 0.1s 0.5 2
H26 PTC thermistor 0: Inactive 1 0 0

(Mode select) 1: Active
H27 (Level) 0.00Å`5.00V 0.01V 1.60 4
H28 Droop operation -9.9Å`0.0Hz 0.1Hz 0.0 3

Function code

Change during

operation

RS485 Data format

User setting

H: High performance functions

Description of change during operation

: The data changed by the or key takes
effect on the inverter operation. However,
press the key to store the new data.

V

V

: Press the or key to change the data.
The new data takes effect after the key is
pressed to store the data.

X : The data can be changed only while the

inverter is stopped.

V

V

FUNC
DATA

FUNC
DATA

5-8 Selecting Functions

5

Min. Factory

Name Setting range unit setting

H30 Serial link Monitor, Frequency , Operation

(Function select)

setting command

0: X X 1 0 0
1: X
2: X
3:

H31 RS485 1 to 31 1 1 X 0

(Address)

H32 (Mode select on 0: Immediate Er8 1 0 0

no response error) 1: Er8 after interval set by timer

2: Retry in interval set by timer (Er8 after
failure to restore)

3: Continuation of operation
H33 (Timer) 0.0 to 60.0s 0.1s 2.0 2
H34 (Baud rate) 0:19200[bit/s] 1 1 0

1:9600

2:4800

3:2400

4:1200
H35 (Data length) 0:8bit 1 0 0

1:7bit
H36 (Parity check) 0: None 1 0 0

1: Even parity

2: Odd parity
H37 (Stop bits) 0: 2 bits 1 0 0

1: 1 bit
H38 (No response error 0: Not detected 1s 0 0

detection time) 1 to 60s
H39 (Response interval) 0.00 to 1.00s 0.01s 0.01 4
H40 Maximum Monitor only

degree C

--0

temperature

of heat sink

H41 Maximum Monitor only A - - 6

effective current

H42 Main circuit Monitor only 0.1% - - 0

capacitor life

H43 Cooling fan Monitor only 10h - - 0

operation time
H44 Inverter ROM version Monitor only - - - 0
H45 Keypad panel Monitor only - - - 0

ROM version

H46 Option ROM version Monitor only - - - 0

Function code

Change during

operation

RS485 Data format

User setting

Description of change during operation

: The data changed by the or key takes
effect on the inverter operation. However,
press the key to store the new data.

V

V

: Press the or key to change the data.
The new data takes effect after the key is
pressed to store the data.

X : The data can be changed only while the

inverter is stopped.

V

V

FUNC

DATA

FUNC

DATA

Selecting Functions 5-9

5

Min. Factory

Name Setting range unit setting

A01

Maximum frequency 2

50 to 400Hz 1Hz 50 X 0
A02 Base frequency 2 25 to 400Hz 1Hz 50 X 0
A03 Rated voltage 2 0V, 80 to 240V(200V class) 1V 230 X 0

(at base frequency 2) 0V,160 to 480V(400V class) 400

A04 Maximum voltage 2 80 to 240V (200V class) 1V 230 X 0

(at maximum 160 to 480V(400V class) 400

frequency 2)
A05 Torque boost 2 0,1,2,3 to 31 1 0 0
A06 Electronic thermal 0: Inactive 1 1 0

overload relay 1: Active (for general purpose motors)

for motor 2 (Select) 2: Active (for inverter motors)

A07 (level) 20 to 135% of the rated inverter current 0.01A

rated

6

motor current

A08 (Thermal time 0.5 to 10 min. 0.1min 5.0 2

constant)

A09 Torque vector control 0:Inactive 1 0 X 0

2 1:Active

A10 Number of motor 2 to 14 2 4 X 0

2 poles

A11 Motor 2 (Capacity) 0.01 to 5.5kW (4.0kW or smaller)

0.01kW

Nominal

kW X 4

0.01 to 11.00kW(5.5/7.5kW)

applied

motor kW

A12 (Rated current) 0.00 to 99.9A 0.01A

standard

X6

rating

A13 (Tuning) 0: Inactive

1: Active (%R1, %X)

2: Active (%R1, %X, Io) 1 0 X 12
A14 (Online tuning) 0: Inactive, 1: Active 1 0 X 0
A15 (No-load current) 0.00 to 99.9A 0.01A

standard

X6

rating

A16

_

R1 setting

_

0.00 to 50.00% 0.01%

standard

4

rating

A17

_

X setting

_

0.00 to 50.00% 0.01%

standard

4

rating

A18 (Slip compensation 0.00 to 15.00Hz 0.01Hz 0.00 4

control 2)

A19 (Slip compensation 0.01 to 10.00s 0.01s 0.50 4

response time 2)

Function code

Change during

operation

RS485 Data format

User setting

Description of change during operation

: The data changed by the or key takes
effect on the inverter operation. However,
press the key to store the new data.

V

V

: Press the or key to change the data.
The new data takes effect after the key is
pressed to store the data.

X : The data can be changed only while the

inverter is stopped.

V

V

FUNC
DATA

FUNC
DATA

A: Alternative motor parameters

5-10 Selecting Functions

5

Min. Factory

Name Setting range unit setting

o00 Optional 0: Option inactive - 0 0

selection 1: Option active

Set 0 when optional card is not used

Function code

Change during

operation

RS485 Data format

User setting

Description of change during operation

: The data changed by the or key takes
effect on the inverter operation. However,
press the key to store the new data.

V

V

: Press the or key to change the data.
The new data takes effect after the key is
pressed to store the data.

X : The data can be changed only while the

inverter is stopped.

V

V

FUNC

DATA

FUNC
DATA

O: Optional functions

F00

Selecting Functions 5-11

5

Operation method

•

The operation input method is set. (Note:
This function can be changed only when the
FWD and REV terminals are open.)

0: The motor starts or stops upon keypad

operation ( or key).

F02

5-2 Detail Description of Each
Function

F: Fundamental functions

Data protection

•

The setting data can be protected against

inadvertent operation at the keypad panel.
0: Data change enabled
1: Data protected
[Setting method]
0→1: Press the + keys simultaneously.

1→0: Press the + keys simultaneously.

Frequency command 1

•

The frequency setting method can be

selected.
0: The frequency is set by the operation of I

and keys.
1: The frequency is set by the voltage input

(at terminal 12) (0 to +10 Vdc).

2: The frequency is set by the current input (at

terminal C1) (4 to 20 mAdc).

3: The frequency is set by the voltage input

and current input (terminal 12 and terminal
C1) ((-10 to +10 Vdc) + (4 to 20 mAdc)).
Inputs at terminals 12 and C1 are added to
determine the frequency.

4: The frequency is set by the voltage input with

polarity (at terminal 12) (-10 to +10 Vdc).
In the case of input with polarity, operation
at a direction opposite to the operation
command is possible.

5: The frequency is set by voltage input

inverse mode operation (at terminal 12)
(+10 to 0 Vdc).

6: The frequency is set by current input

inverse mode operation (at terminal C1) (20
to 4 mAdc).

7: UP/DOWN control mode 1

The frequency is set by terminal UP,
terminal DOWN. (initial value = 0)

8: UP/DOWN control mode 2

The frequency is set by terminal UP,
terminal DOWN (initial value = last value
during previous operation).
Refer to the description of the E01 to E05
functions for details.

F01

F00

STOP

V

STOP

V

V

V

RUN

STOP

Description of forward and reverse operation

The direction of rotation is determined by
the FWD and REV terminals on the control
terminal block as follows.
FWD-P24 short-circuited:Forward rotation
REV-P24 short-circuited: Reverse rotation
The motor does not start if both the FWD
and REV terminals are connected with the
P24 terminal or both of them are open.

1: External signal (digital input)

The motor starts or stops upon the state of
the FWD and REV terminals on the control
terminal block.
FWD-P24 short-circuited:forward rotation
REV-P24 short-circuited: reverse rotation
The motor does not start if both the FWD
and REV terminals are connected with the
P24 terminal or both of them are open.

2: Keypad operation (forward rotation only)

The motor runs in the forward direction
when the key is pressed and it
decelerates to stop when the key is
pressed.

3: Keypad operation (reverse rotation only)

The motor runs in the reverse direction
when the key is pressed and it
decelerates to stop when the key is
pressed.

RUN

STOP

RUN

STOP

Normal mode operaton
(setting: 1.3,4

Normal mode operaton
(setting: 2

Inverse mode operaton
(setting: 5

Inverse mode operaton
(setting: 5

5-12 Selecting Functions

5

Frequency setting block diagram

Selecting Functions 5-13

5

Maximum frequency 1

•

This is the maximum frequency which is

output by the inverter of motor 1.

Setting range: 50 to 400 Hz

If a value larger than the rating of the driven

unit is set, the motor or machine may be

broken. Set a value suitable for the driven

unit.

Base frequency 1

•

This is the maximum output frequency in the

constant torque zone of motor 1, that is, the

output frequency at the rated output voltage.

Set the rating of the motor.

Setting range: 25 to 400 Hz

Note) If the setting of base frequency 1 is

larger than the setting of maximum frequency

1, the output frequency is limited by the

maximum frequency and the output voltage

does not rise to the rated voltage.

F04

F03

Acceleration time 1

Deceleration time 1

•

These are the acceleration time taken for the

output frequency to reach the maximum
frequency from the start, and the deceleration
time taken to stop from the maximum output
frequency.
Setting range: Acceleration time 1: 0.01 to
3600 s
Deceleration time 1: 0.01 to 3600 s
The number of significant digits of the
acceleration and deceleration time is three.
Therefore the uppermost three digits can be
set.
The acceleration time and deceleration time
are set based on the maximum frequency.
The relationship between the frequency
setting and the acceleration/deceleration time
is as shown below.

F08

F07

Rated voltage 1

•

This is the output voltage value at base

frequency 1 which is output to motor 1.

However, voltages exceeding the source

(input) voltage cannot be output.

Setting range: 0, 80 to 240 V for 200V class

0, 160 to 480 V for 400V class

A "0" setting stops the operation of the

voltage adjustment function. Therefore a

voltage proportional to the source voltage is

output.

Note) If the setting of rated voltage 1 is larger

than the setting of maximum output voltage 1,

the voltage is limited by the maximum output

voltage and it does not rise to the rated

voltage.

Maximum voltage 1

•

This is the maximum value of the output

voltage of the inverter of motor 1. However,

voltages exceeding the source (input) voltage

cannot be output.

Setting range: 0, 80 to 240 V for 200V class

0, 160 to 480 V for 400V class

F06

F05

Set frequency<Maximum output frequency

The setting differs from the actual operation time.
Acceleration/deceleration time
=SettingX Set frequency / Maximum output
frequency)

Note) If an excessively short acceleration or
deceleration time is set though the load torque
or moment of inertia of the load is large, the
torque limiter or stall prevention function is
activated. When these functions are activated,
the time becomes longer than the operation
time explained above.

5-14 Selecting Functions

5

Electronic thermal overload relay 1
(Level)

Electronic thermal overload relay 1
(Thermal time constant)

The electronic thermal overload relay watches the
output frequency, output current and operation
time of the inverter to prevent the motor from
overheat. The protective function becomes
active when 150% of the set amperage flows for
the time set at F12 (thermal time constant).

•

Selection between active and inactive
operation of the electronic thermal overload
relay and selection of the target motor are
made. When the general purpose motor is
selected, the operation level is low at low
revolution speeds according to the cooling
characteristics of the motor.
Setting: 0 Inactive

1 Active (for general purpose motor)
2 Active (for forced-ventilated motor)

•

The operation level of the electronic thermal
overload relay is set in amperage. Enter the
value 1.0 to 1.1 times rated current of the
motor.

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

F11

F10

F12

F11

Setting range Description of selection
0 Automatic torque boost characteristics

where the torque boost value of the
constant torque load is automatically
adjusted (refer to function code P04
"Motor 1 ("(Tuning)").

1 Square reduction torque

characteristics for fan and pump loads

2 Proportional torque characteristics for

intermediate load between the square
reduction torque and torque
characteristics.

3 to 31 Constant torque characteristics

Torque boost 1

•

This function is for motor 1. The following
options can be selected.

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

- Correction of magnetic flux shortage of
motor in accordance with the voltage drop in
low frequency zone, and torque boost during
low speed operation (boosting of V/f
characteristics).

F09

•

Torque characteristics
<Square reduction torque characteristics>
<Proportional torque characteristics>

<Constant torque characteristics>

Note) When the torque boost value is
excessively large, the motor is excessively
excited in the low speed zone at all types of
characteristics. If operation continues in such a
state, the motor may be overheated. Set a value
according to the characteristics of the driven
motor.

Electronic thermal overload relay 1
(Select)

F02

Set the time since 150% of the operation level
current flows continuously until the electronic
thermal
overload relay
functions.
Setting range:

0.5 to 10.0 min.
(minimum unit

0.1 minute)

F12

When F10 = 1

When F10 = 2

100

90

69

Fe x 0.33 Fe

Graph of relationship between operation
level current and output frequency

Output Frequency Fo (Hz)

Operation Level Current [%]

Fe =

Fb (Fb = <50Hz)
50Hz (Fb > 50Hz)

nb: Fb = Base Frequency

Selecting Functions 5-15

5

Electronic thermal overload relay
(for External braking resistor)

•

This function controls the operation frequency
of the braking resistor and the continuous
operation hours to prevent the braking

resistor from being overheated.
Setting
0: Inactive
1: Active - (For details contact IMO)
2:Active - (For details contact IMO)

Restart mode after momentary power

failure

•

Select the operation to be taken by the

inverter upon momentary power failure.
You can select between protective operation
(alarm output, alarm display, and inverter
output shutoff) upon detection of power failure
to be taken against an undervoltage and
restart after momentary power failure where
the coasting motor is not stopped but
automatically restarted after the source
voltage is recovered.
Setting range: 0 to 3 (Refer to the table below

for details of the function.)

F14

F13

Function codes used for the restart after
momentary power failure include H13 and H14.
Refer to the description of these codes, too. As
well, a rotating motor pickup function can be
selected as a starting method after a
momentary power failure. (Refer to function
code H09 for details of setting.)
When the pickup function is used, the speed of
the coasting motor is detected and the motor is
started without a shock. Because a speed
detection time is necessary if the pickup
function is made effective, the pickup function
should be made ineffective and restart should
be made at the frequency effective before the
power failure in a system with a large inertia to
restore the original frequency, to make the most
of the small decrease in the speed of the
coasting motor.
The effective range of the pickup function is 5 to
120 Hz. If the detected speed is out of the
effective range, the inverter restarts according
to the regular function of restart after
momentary power failure.

Name of function Operation upon power failure Operation upon power recovery

0

1

2

3

Setting

Inactive after
momentary power
failure (The inverter trips
immediately.)

Upon detection of an
undervoltage, a protective
function is activated to stop the
output.

The inverter does
not restart.

The inverter
restarts after
the protective
function is
reset and an
operation
command is
input.

Inactive after momentary
power failure (The
inverter trips after the
power is recovered.)

Upon detection of an
undervoltage, no protective
function is activated but the
output is stopped.

A protective function
is activated; the
inverter does not
restart.

Restart after momentary
power failure (The
inverter restarts at the
frequency effective at the
time of power failure.)

Upon detection of an
undervoltage, no protective
function is activated but the
output is stopped.

The inverter automatically restarts at
the output frequency effective at the
time of power failure.

Restart after momentary
power failure (The
inverter restarts at the
starting frequency; for
low inertia loads.)

Upon detection of an
undervoltage, no protective
function is activated but the
output is stopped.

The inverter automatically restarts at
the starting frequency set at F23.

5-16 Selecting Functions

5

Note: The chain line indicates the motor speed.

Selecting Functions 5-17

5

Frequency limiter (High)

Frequency limiter (Low)

•

Set the upper and lower limits of the

frequency setting.
Setting range: 0 to 400 Hz

F16

F15

Bias frequency

This function obtains the frequency setting
from addition of the frequency setting in
relation to the analog input and a bias
frequency. The operation is as shown in the
figure below.
However, if the bias frequency is larger
(smaller) than the maximum frequency (­maximum frequency), the limit is set at the
maximum output frequency (- maximum
output frequency).

F18

DC brake (Starting frequency)

DC brake (Braking level)

DC brake (Braking time)

•

Starting frequency: Set the frequency at
which the DC brake starts operation during
deceleration and stop.
Setting range: 0.0 to 60.0 Hz

•

Braking level: Set the output current level
during DC braking. The level can be set in an
increment of 1% of the rated inverter output
current.
Setting range: 0 to 100%
Actual minimum level is fixed to 5% even if
this function set from 1 to 5% for
VXSM75-1/550-3.

•

Braking time: Set the operation time of DC
braking.
Setting range: 0.0 Inactive

0.1 to 30.0 s

F22

F21

F20

F22

F21

F20

*The starting frequency is output when the
inverter starts operation, and the stopping
frequency is output when it stops operation.
*(Low limit) > (High limit)...Priority is given to the
High limit value.

Gain (Frequency setting signal)

•

Set the ratio of the frequency setting in

relation to the analog input.

The operation is as shown in the figure below.

F17

CAUTION

The brake function of the inverter
does not insure the function of a

mechanical latch.

Injuries could occur.

5-18 Selecting Functions

5

Starting frequency (Frequency)

Starting frequency (Holding time)

Stop frequency

•

The starting frequency can be set to insure
the torque during start of operation. Holding
time for at the starting frequency before
acceleration can be set to wait for
establishment of the magnetic flux of the
motor during start of operation.

•

Frequency: Set the starting frequency.
Setting range: 0.1 to 60.0 Hz

•

Holding time: Set the time for continuing the
starting frequency during start of operation.
Setting range: 0.0 to 10.0 s

*The Holding time is not placed during

changeover between forward and reverse
rotation.

*The Holding time is not included in the

acceleration time.

*The function is effective even when C21 Timer

operation is selected; the time is included in the
timer value.

•

Set the stop frequency.
Setting range: 0.1 to 6.0 Hz

F25

F24

F23

F25

F24

F23

When the starting frequency is smaller than the
stop frequency and the frequency setting is
smaller than the stop frequency, operation does
not start.

Motor sound (Carrier frequency)

•

This function adjusts the carrier frequency.
After adjustment, reduction of the motor
noise, avoidance of resonance with the
mechanical system, reduction of leakage
current from the output circuit wiring,
reduction of inverter noise and other effects
can be obtained.

Setting range: 0.75 to 15 (0.75 to 15 kHz)

F25

Carrier frequency Lower Higher
Motor noise Larger to Smaller
Output current

waveform Worse to Better
Leakage current Less to More
RF emissions Less to More

*A smaller setting causes a less sinusoidal

output current waveform (with much harmonic
component) to cause an increase in the motor
loss, resulting in a slightly higher motor
temperature.

For example, when 0.75 kHz is set, reduce
the motor torque by about 15%. When a large
value is set, the inverter loss increases,
raising the inverter temperature.

Motor sound (Sound tone)

•

The sound tone of the motor noise can be
changed when the carrier frequency is 7 kHz
or lower. Use the function according to
preference.
Setting range: 0, 1, 2, 3

FMA and FMP terminals (Select)

•

Select the operation method of the FM
terminal.
0: Analog output (FMA function)
1: Pulse output (FMP function)

FMA (Voltage adjust)

FMA (Function)

The output frequency, output current and other
monitor data can be output to the FM terminal in
a DC voltage. The amplitude can be adjusted.
Note) To use the FM terminal for analog outputs,
set F29 at "0" and set SW1 on the control board
to FMA.

•

Adjust the voltage corresponding to 100 [%]
of the monitoring amount of the monitoring
item selected at F31 in a range from 0 to 200
[%] (in an increment of 1 [%]).
Setting range: 0 to 200 [%]

F30

F31

F30

F29

F27

F30:100%

F30:50%

F30:0%

50% 100%

10V or above

10V

5V

FMA terminal output

voltage

Selecting Functions 5-19

5

•

Select the monitoring item to be output at the

FM terminal.

F31

Target of Definition of 100% of
monitoring monitoring amount

0 Output frequency 1 Maximum output

(before slip frequency
compensation)

1 Output frequency 2 Maximum output

(after slip frequency
compensation)

2 Output current 2 times rated inverter

output current

3 Output voltage 250V (200V class) ,

500V (400V class)

4 Output torque 2 times rated motor

torque

5 Load factor 2 times rated motor

load

6 Input power 2 times rated inverter

output
7 PID feedback value 100% feedback value
8 DC link circuit voltage 500V (200V class)

1000V (400V class)

Setting

FMP (Pulse rate)

FMP (Voltage adjust)

FMP (Function)

The output frequency, output current and other
monitor data can be output at the FM terminal in
pulse voltages. The average voltage can be
connected to an analog meter.
To select the pulse output and connect a digital
counter or the like, set the F33 pulse rate to a
desired value and set the F34 voltage to 0%.
To select the average voltage and connect an
analog meter, set the F34 voltage to determine
the average voltage; the F33 pulse rate is fixed
at 2670 [p/s].
Note) To use the FM terminal for the pulse

output, set F29 to "1" and set SW1 on
the control board to the FMP side.

•

Set the pulse frequency corresponding to 100
[%] of the monitoring amount of the
monitoring item selected by F35 in a range
from 300 to 6000 [p/s].
Setting range: 300 to 6000 [p/s]

F33

F35

F34

F33

T1

Approx 15.6 [V]

T

Pulse period

Pulse period [p/s] = 1/T
Duty [%] = T1/T X 100
Average voltage [V] = 15.6 X T1/T

•

Set the average voltage of the pulse output at
the FM terminal.
Setting range: 0 to 200 [%]
However, if "0" is set, the pulse frequency
varies according to the monitoring amount of
the monitoring item selected at F35 (with the
maximum value being the F33 setting). If a
value between 1 and 200 is set, the pulse
frequency is fixed at 2670 [p/s]. The average
voltage corresponding to 100 [%] of the
monitoring amount of the monitoring item
selected at F35 is adjusted in a range
between 1 and 200 [%] (in an increment of 1
[%]). (The duty of the pulse changes.)

Note : FMP has approx. 0.2V offset voltage

even
if FMP outputs zero value.

•

Select the monitoring item to be output at the
FM terminal. The options to be selected are
the same as F31.

30Ry operation mode

•

Select whether the alarm output relay (30Ry)
of the inverter is activated (excited) during
normal operation or during a trip.

F36

F35

F34

Description of operation

0 During normal operation 30A - 30C: OPEN

30B - 30C: CLOSE

Upon a trip condition 30A - 30C: CLOSE

30B - 30C: OPEN

1 During normal operation 30A - 30C: CLOSE

30B - 30C: OPEN

Upon a trip condition 30A - 30C: OPEN

30B - 30C: CLOSE

Setting

Note) Because the contact between 30A and
30C is on after the inverter is turned on (after
about 1 second since the power is turned on)
when the setting is "1", care must be taken to
the sequence design.

5-20 Selecting Functions

5

Torque limiter 1 (Driving)

Torque limiter 1 (Braking)

•

The torque limiting operation calculates the
motor torque from the output voltage, current,
resistance of the primary winding of the motor
and other data to control the frequency so
that the calculated value does not exceed the
control value. This operation insures inverter
operation without tripping upon abrupt
changes in the load torque while the limit
value is maintained.

•

Select the limit values of the driving torque
and braking torque.

•

The acceleration/deceleration operation time
during activation of this function becomes
longer than the set acceleration/deceleration
time. When the driving torque is limited during
constant speed operation, the frequency is
lowered to reduce the load torque. (When the
braking torque is limited, the contrary occurs.)
Setting range: 20 to 200,999%
Set "999" to inactivate the torque limiter.
Set only the braking torque to "0" to
automatically avoid OU tripping caused by
power regeneration.

F02

F40

WARNING

If the torque limiter has been

selected, the inverter may operate at
an acceleration/deceleration time or speed
different from the set ones. Design the
machine so that safety is ensured even in
such cases.

Otherwise an accident could occur.

Torque vector control 1

•

The torque vector control calculates the
torque suitable for the load to make the most
of the motor torque, and controls the voltage
and current vectors to optimum ones
according to the calculated value.

•

When "1" (active) is selected, the settings of
the following function codes become different
from the written ones.

1) F09 "Torque boost 1"
Works as "0" value (automatic torque boost).

2) P09 "Slip compensation control"

F02

Slip compensation is automatically activated.
When "0" is set, the slip compensation
amount of a standard three-phase motor is
assumed. When the setting is other than "0",
the written setting is applied.

•

Use the torque vector control function under
the following conditions.

1) A single motor
If two or more motors are connected, vector
control is not possible.

2) The data of function codes of motor 1 (P03
"Rated current", P06 "No-load current", P07
"%R1" and P08 "%X") must be accurate Use
PO4, Auto tuning.

3) The rated motor current must not be much
smaller than the rated inverter current.
Though it depends on the model, the one
smaller by two ranks than the standard
applicable motor of the inverter is the
allowable smallest motor.

4) The wiring distance between the inverter
and motor must be up to 50 m. Too long a
wiring distance disables accurate control due
to the leakage current flowing through the
static capacitance between the cable and the
ground.

5) When a reactor is connected between the
inverter and the motor or when the wiring
impedance is too large to be overlooked,
change the data using P04 "Auto tuning".
If these conditions cannot be satisfied, leave
the setting at "0" (inactive).

Setting State of operation

–

Inactive

–

Active

Combination of input Selected frequency

signals

3210

[SS8] [SS4] [SS2] [SS1]

off off off off Selected by F01 or C30
off off off on C05 Multistep frequency 1
off off on off C06 Multistep frequency 2
off off on on C07 Multistep frequency 3
off on off off C08 Multistep frequency 4
off on off on C09 Multistep frequency 5
off on on off C10 Multistep frequency 6
off on on on C11 Multistep frequency 7
on off off off C12 Multistep frequency 8
on off off on C13 Multistep frequency 9
on off on off C14 Multistep frequency 10
on off on on C15 Multistep frequency 11
on on off off C16 Multistep frequency 12
on on off on C17 Multistep frequency 13
on on on off C18 Multistep frequency 14
on on on on C19 Multistep frequency 15

Selecting Functions 5-21

5

E:Extension Terminal Functions

X1 terminal function

X2 terminal function

X3 terminal function

X4 terminal function

X5 terminal function

•

The function of each digital input terminal X1
to X5 can be set arbitrarily using a code.

E05

E04

E03

E02

E01

Setting Function
0,1,2,3 Multistep frequency selection

(1 to 15 steps)

4 Acceleration/deceleration selection

(1 step)
5 Self holding selection [HLD]
6 Coast-to-stop command [BX]
7 Error reset [RST]
8 External alarm [THR]
9 Frequency setting 2 / frequency setting

1 [Hz2 / Hz1]

10 Motor 2 / motor 1 [M2 / M1]
11 DC brake command [DCBRK]
12 Torque limit 2 / torque limit 1 [TL2 / TL1]
13 UP command [UP]
14 DOWN command [DOWN]
15 Write enable for keypad (data change

allowed) [WE-KP]

16 PID control cancel [Hz / PID]
17 Forward/reverse operation switch

(terminal 12 and terminal C1) [IVS]

18 Link operation selection

(RS485 standard, BUS Option) [LE]

Note) The data numbers not assigned to E01

through E05 are considered to be
inactive.

Multistep frequency

Frequencies set to function codes C05 through
C19 can be selected according to external
digital input signal switching. Set data 0 to 3 to
the desired digital input terminals and
combination of input signals determines the
selected frequency.

Multistep frequency selection

Acceleration/deceleration time selection

Acceleration/deceleration time set to function
codes E10 and E11 can be selected according
to external digital input signal switching.

3-wire operation stop command [HLD]

Used for three-wire operation. When HLD-P24
is ON, the FWD or REV signal is maintained,
and when it is OFF, the signal is reset.

Note : The inverter operates while FWD-P24 or

REV-P24 is ON even if HLD-P24 is OFF.
An external interlock sequence ,which
makes FWD-P24 and REV-P24 OFF
when HLD-P24 is OFF, is required.

Input signal Selected

4[RT1] acceleration/deceleration time

off F07 Acceleration time 1

F08 Deceleration time 1

on E10 Acceleration time 2

E11 Deceleration time 2

5-22 Selecting Functions

5

Coast-to-stop command [BX]

When the BX terminal is connected to the P24
terminal, the inverter output is immediately shut
off and the motor coasts to stop. No alarm signal
is output. This signal is not maintained.
When the operation command (FWD or REV) is
ON and the BX terminal is disconnected from
the P24 terminal, the motor starts at the starting
frequency.

Alarm reset [RST]

Upon tripping, when the connection between
the RST and P24 terminals is turned on, the
batch alarm output is removed, and when the
connection is turned off, the trip display is
removed and operation is restarted.

Trip command (External fault) [THR]

When the connection between the THR and
P24 terminals is turned off, the inverter output is
shut off (to allow the motor to coast to stop), and
an alarm [OH2] is output. This signal is
maintained internally until an RST input is
added. This function is used to protect the
external braking resistor from being overheated.
When this terminal function is not set, an ON
input is assumed.

Frequency setting 2/1 [Hz2 / Hz1]

An external digital input signal switches the
frequency setting method defined by function
codes F01 and C30.
The signal operation is changed under PID
control. (Refer to H20 through H25.)

Input signal Selected

9[Hz2/Hz1] Frequency setting

off F01 Frequency setting 1
on C30 Frequency setting 2

Input signal Selected motor

10[M2/M1]

off Motor 1
on Motor 2

Input signal Selected function

15[WE-KP]]

off Data change disabled
on Data change enabled

Motor 2/1 [M2 / M1]

An external digital input signal switches each
motor constant. However, this input is effective
only when the operation command to the
inverter is turned off and the inverter is stopped.
Therefore operation at 0 Hz is not included.

DC brake command [DCBRK]

When the external digital input signal is ON, DC
braking starts and continues as far as the signal
remains turned on after the operation command
is turned off (or, the STOP key is pressed in the
keypad panel operation mode or both the FWD
and REV terminals are turned on or turned off in
the terminal block operation mode) and the
inverter frequency drops below the frequency
set at F20. In this case, the longer time between
the time set at function code F22 and the time
when the input signal is turned on, is given
priority.
However, operation is restarted if the operation
command is turned on.
Torque limiter 2/Torque limiter 1 [TL2 / TL1]
An external digital input signal switches
between the torque limiter values set at function
codes F40 and F41 or E16 and E17.

Input signal Selected torque limit value

12[TL2/TL1]

off F40 Torque limiter 1 (Driving)

F41 Torque limiter 1 (Braking)

on E16 Torque limiter 2 (Driving)

E17 Torque limiter 2 (Braking)

Input signal Selected function

13 14 (when operation command is ON)
off off The output frequency is maintained.
off on The output frequency increases at the

acceleration time.

on off The output frequency decreases at the

deceleration time.

on on The output frequency is maintained.

UP command [UP] / DOWN command [DOWN]

The output frequency can be increased or
decreased according to the external digital input
signal while the operation command is input
(turned on). The changing range is 0 to the
maximum output frequency and operation in a
direction opposite to that in the operation
command is impossible.

Write enable for KEYPAD [WE-KP]

This function allows program changes only
while the external signal is input; this is for the
protection of the program from inadvertent
changes.

Note) If data 15 is set to a terminal

erroneously, program change become
disabled. Turn the terminal ON then
change to another number.

Selecting Functions 5-23

5

Input signal Selected function

18[LE]

off Link command invalid
on Link command valid

Input signal Selected function

16[Hz/PID]

off PID control valid
on PID control invalid

(frequency setting through keypad panel)

Input signal Selected function

17[IVS]

off When forward operation is set

→forward operation

When reverse operation is set

→reverse operation

on When forward operation is set

→reverse operation
When reverse operation is set
→forward operation

Inverter running [RUN]

"Inverter running" means that the inverter
outputs a frequency as a speed signal. At this
time, an ON signal is output. However, if the DC
braking function is active, the signal is turned
off.

Frequency equivalence [FAR]

Refer to the description for function code E30
Frequency equivalence (detection width).

Frequency level detection [FDT]

Refer to the description for function codes E31
and E32 Frequency level detection.

Undervoltage detection signal [LV]

When the undervoltage protection function is
active, that is, when the main circuit DC voltage
is below the undervoltage detection level, an
ON signal is output. After the voltage is restored
to become higher than the undervoltage
detection level, the signal is turned off. The ON
signal is output also during activation of the
undervoltage protection function.
Undervoltage detection level:
Approx 200 Vdc (200V class)
Approx 400Vdc (400V class)

PID control cancel [Hz/PID]

An external digital input signal can disable PID
control.

Inverse mode changeover (Terminal 12 and
C1) [IVS]

An external digital input signal switches
between the forward and reverse operations of
analog inputs (terminals 12 and C1).

Link enable (RS485) [LE]

An external digital input signal is switched to
validate or invalidate the frequency command
and operation command from the link. The
source of the command can be set at H30 Link
function.

Acceleration time 2

Deceleration time 2

•

Additional acceleration and deceleration time

can be selected besides F07 "Acceleration
time 1" and F08 "Deceleration time 1".

•

The operation and setting range are the same
as those for F07 "Acceleration time 1" and
F08 "Deceleration time 1". Refer to these
functions.

•

To switch between the acceleration and
deceleration time, select any terminal from
among E01 "X1 terminal (Function selection)"
through E05 "X5 terminal (Function selection)"
as a switching signal input terminal. Set the
selected terminal to "4"
(acceleration/deceleration time selection) and
supply a signal to the terminal to switch.
Switching is effective during acceleration,
during deceleration or during constant speed
operation.

E11

E10

Torque limiter 2 (Driving)

Torque limiter 2 (Braking)

•

Use these functions to switch the torque
limiter levels set at F40 and F41 using an
external control signal. The external signal is
supplied to an arbitrary control terminal
among X1 through X5, the function of which
is set to torque control 2 / torque control 1
(data 12) at E01 to E05.

Y1 terminal function

Y2 terminal function

•

A part of control and monitor signals can be

output at the Y1 and Y2 terminals.

E21

E20

E17

E16

Setting Output signal

0 Inverter running [RUN]
1 Frequency equivalence [FAR]
2 Frequency level detection [FDT]
3 Undervoltage detection signal [LV]
4 Torque polarity [B/D]
5 Torque limiting [TL]
6 Auto restarting [IPF]
7 Overload early warning [OL]
8 Life time alarm [LIFE]
9 Frequency level detection 2 [FAR2]

5-24 Selecting Functions

5

FDT function signal (Level)

FDT function signal (Hysteresis)

•

Determine the operation (detection) level of
the output frequency and the hysteresis width
for operation cancellation. When the output
frequency exceeds the set operation level, an
ON signal can be output from the terminal.
Setting range: (Operation level): 0 to 400 Hz

(Hysteresis width): 0.0 to 30.0 Hz

E32

E31

Torque polarity [B/D]

The polarity of the torque calculated inside the
inverter is judged and the driving/braking torque
discrimination signal is output.
When the calculated torque is positive/driving,
an OFF signal is output, and when it is
negative/braking, an ON signal is output.

Torque limiting [TL]

When the torque limit is set, a stall prevention
function automatically functions to change the
output frequency automatically; the torque
limiting signal is output externally to reduce the
load or to indicate an excessive load at the
monitor.
The ON signal is output during torque limit,
regeneration avoidance operation and current
limit.

Auto restarting [IPF]

An event of momentary power failure, start-up of
restart mode after momentary power failure,
and automatic synchronization and recovery are
reported to the outside.
When the power is recovered and
synchronization starts after a momentary power
failure, an ON signal is output, and the signal
changes to the OFF signal after the frequency
before the momentary power failure is achieved.
In the startup at the starting frequency mode,
completion of restart is assumed at the time of
power recovery, and the signal is turned off in
this timing. (Refer to the description for F14.)

Overload early warning [OL]

An overload early warning level before thermal
protection trip (electronic thermal overload
relay) of the motor is judged and an ON signal is
output.
Either the electronic thermal overload forecast
or output current overload forecast can be
selected for overload forecast judgement.
For the setting method, refer to Overload early
warning (Operation selection) (E33) and
Overload early warning (Operation level) (E34).
Note) This function is effective only for motor 1.

Life time alarm [LIFE]

Life judgement output for main circuit capacitor
Refer to section 8-2 (1) "Capacity measurement
of main circuit capacitor" for description.

Frequency level detection 2 [FAR2]

This is a frequency level detection (detection
width) signal where function code E29
"Frequency level detection delay" takes effect.
Detection level of the frequency is detected at
the output frequency before the torque limiter.

Frequency level detection delay

FAR function signal (Hysteresis)

•

Adjust the hysteresis and signal output delay
for achievement of the output frequency to
the set frequency (operation frequency).
The delay is valid only for FAR2 and it can be
adjusted between 0.01 and 10.0 seconds.
The hysteresis can be adjusted in a range of
0 to +/-10 Hz of the output frequency.
The output frequency changes according to the
torque limiting operation. When the frequency
exceeds the setting range (width), the signal
is turned off in a mode (FAR: E20, 21 set to
"1") or it is not turned off in another mode
(FAR2: E20, 21 set to "9").
E29: Setting range: 0.01 to 10.0 s
E30: Setting range: 0.0 to 10.0 Hz
An ON signal can be output from the terminal
within the detection range (width).

E30

E29

Installation and Connection 5-25

5

OL function signal (Mode select)

•

The OL function signal includes two
variations: "overload forecast by means of the
function of the electronic thermal overload
relay" and "overload forecast by means of
output current".
Setting: 0 Electronic thermal overload relay

1 Output current

E33

Setting Function Outline

0 Electronic Overload forecast using the

thermal characteristics of the

overload electronic thermal overload

relay relay which show inverse time

limit characteristics against
the output current.

The operation selection of the
inverse time limit
characteristics and the
thermal time constant are the
same characteristics as those
of the electronic thermal
overload relay (F10, F12) for
motor protection. To use for
the forecast, set an earlier
output than the electronic
thermal overload relay for
motor protection.

1 Output When the output current

current exceeds the set current for a

period longer than the set
time, an overload forecast is
issued.

OL function signal (Level)

Determine the level of the electronic thermal
overload relay or output current.
Setting range:

Rated inverter output current x (20 to 200%)
The operation cancellation level is 90% of the
set value.

OL function signal (Timer)

•

When E33 "OL function signal (Mode select)"

is set at "1" (output current), set the time

taken until the forecast is issued.

Setting range: 0.1 to 60.0 s

E35

E34

Display coefficient A

Display coefficient B

•

Use these functions as conversion
coefficients for determining the display value
(process amount) of the load speed, line
speed and target value and feedback amount
of the PID adjuster.
Setting range
Display coefficient A: 0.00 to 200.0
Display coefficient B: 0.00 to 200.0

•

Load speed and line speed
Use E40 "Display coefficient A".
(Displayed value) = (Output frequency) x
(0.01 to 200.0)
The effective value of the display data is 0.01
to 200.0. Therefore the display is limited by
the minimum value of 0.01 and the maximum
value of 200.0 even if the value exceeds the
range.

•

Target value and feedback amount of PID

adjuster
Set the maximum value of the display data at
E40 "Display coefficient A" and set the
minimum value at E41 "Display coefficient B".
Display value = (Target value or feedback
amount) x (Display coefficient A - B) + B

E41

E40

LED display filter

The data of "LED monitor" includes data for
which display of the changing moment is not
necessary. This type of data can be provided
with a filter for flicker prevention.

Setting range: 0.0 to 5.0 s

•

The target display items are the output

current and output voltage.

E42

A

B

0%

100%

5-26 Selecting Functions

5

C: Control Functions of Frequency

C01 Jump frequency 1

C02 Jump frequency 2

C03 Jump frequency 3

C04 Jump frequency hysteresis

•

These functions jump the inverter output
frequency at the set frequencies to avoid
mechanical resonance with the load.

•

Three jump frequencies can be set.

•

This function is inactive when all the jump
frequencies 1 through 3 are set at 0 Hz.

•

The frequencies are not jumped during
acceleration or deceleration.
If the setting ranges of jump frequencies
overlap, the sum of the setting ranges is
jumped.

Setting range: 0 to 400 Hz
Minimum unit: 1 Hz

Setting range: 0 to 30 Hz
Minimum unit: 1 Hz

C04

C03C02C01

C04

C03

C02

C01

Multistep frequency 1 through
Multistep frequency 15

•

Terminal functions SS1, SS2, SS4 and SS8
are turned on or off to switch multistep
frequencies 1 through 15. (Refer to E01
through E05 for the definition of the terminal
function.)

•

Undefined terminals among terminal
functions SS1, SS2, SS4 and SS8 are
assumed to be turned off.
Setting range: 0.00 to 400.0 Hz
Minimum unit: 0.01 Hz

C19

C05

Selecting Functions 5-27

5

Timer operation

Stage 1

•

An operation pattern from the start of

operation to automatic stop can be created.

•

Select active or inactive timer operation.

0: Inactive timer operation

1: Active timer operation

•

Set the time from the start of operation to

automatic stop.

Setting range: 0.00 to 3600 s
Note) If the power is turned off or the inverter is

stopped or trips during timer operation,
the counted time is reset.

Frequency command 2

•

Select the frequency setting method.

For the selectable frequency setting methods,

refer to the description of F01.

Analog setting signal offset
adjustment (Terminal 12)

Analog setting signal offset
adjustment (Terminal C1)

•

Set the offset of the analog input (terminal

[12], terminal [C1]).

The offset can be set in the range between -

5.0 [%] and + 5.0 [%] of the maximum output

frequency (in 0.1 [%] step).

C32

C31

C30

C22

C21

C22

C21

Analog setting signal filter

•

The analog signal supplied to control terminal

12 or C1 sometimes includes electric noise.
Electric noise make the control unstable.
Adjust the time constant of the input filter to
remove the effects of electric noise.
Setting range: 0.00 to 5.00 s

•

With a large time constant (setting), the
control becomes stable but there is a delay in
the control response. With a small time
constant, the response is quick but the
control becomes unstable.
If the setting is not clear, change the setting
when the control is unstable or the response
is slow.

Note) The function applies to both terminals

[12] and [C1] (in common). However,
when a PID feedback signal is input,
H25 "PID control feedback filter" is
applied.

C33

5-28 Selecting Functions

5

P: Motor parameters

Number of motor 1 poles

•

This parameter is the number of poles of
driven motor 1. Write a value to display
correct motor speeds (synchronized speeds)
at the LED.
Setting range: 2, 4, 6, 8, 10, 12 or 14

Motor 1 (Capacity)

•

A standard applicable motor capacity is set
before shipment from the factory. Change the
setting to drive a motor rated at other than the
standard applicable motor capacity.
Setting range:0.01 to 5.50 kW(3.7kW or
smaller)

0.01 to 11.00kW (5.5,7.5kW)
Set the standard applicable motor capacity
specified in section 9-1 "Standard
Specifications". The setting range should be
between one size higher or lower by two
sizes from the standard applicable motor
capacity. If the range is exceeded, accurate
control may not be possible. If a value
between the standard applicable motor
capacity and the capacity of another size is
set, the data of the lower capacity is
automatically written for the data of the
related functions.

•

After the setting of this function is changed,
the settings of the following related functions
change to the data for standard three-phase
motor.
P03 "Motor 1 (Rated current)"
P06 "Motor 1 (No-load current)"
P07 "Motor 1 (%R1)"
P08 "Motor 1 (%X)"

Note) The settings of three-phase standard

motor are the data for 3-phase 200V or
400V/ 50 Hz.

Motor 1 (Rated current)

•

This parameter is the rated current of motor

1.
Setting range: 0.00 to 99.9 A

Motor 1 (Tuning)

•

The motor data is measured and the data is
automatically written.

P04

P03

P01

P01

Setting State of operation

0 Inactive
1 The primary resistance (%R1) of the

motor and the leakage reactance (%X)
at the base frequency are measured
while the motor is stopped, and the data
is automatically written to P07 and
P08.(Static tuning)

2 The primary resistance (%R1) of the

motor and the leakage reactance (%X)
at the base frequency are measured
while the motor is stopped, then the no­load current (Io) is measured while the
motor turns, and P06, P07 and P08 are
automatically written.(Dynamic tuning)

•

Perform a tuning when the P06, P07 and P08
data written in the inverter in advance differs
from the actual motor data, that is, in the
following cases. Improvement in the control
and calculation accuracy is expected.

-

When a motor other than non standard
three-phase motor (4 poles) is used.

-

When the impedance on the output side
cannot be ignored due to a long wiring
length between the inverter and the motor
or connection of a reactor.

-

When %R1 or %X is unknown due to a
nonstandard motor or a special motor.

Tuning procedure

1. Adjust the voltage and frequency according to
the characteristics of the motor. Adjust "F03",
"F04", "F05" and "F06".

2. Enter the motor constants which cannot be
tuned. P02 "Capacity", P03 "Rated current",
P06 "No-load current" (The no-load current is
not necessary in Dynamic tuning.)

3. To tune the no-load current, too, disconnect
the motor from the mechanical units and
check that no danger occurs even if the motor
turns.

4. Set P04 "Tuning" to "1" (motor stop) or "2"
(motor rotation) and press the FUNC/DATA
key to write the data, then issue an operation
command (press the RUN key or turn the
FWD or REV terminal on) to start tuning.
Tuning takes several seconds to several tens
of seconds. (When the setting is "2", the
motor accelerates to a half of the base
frequency in the set acceleration/deceleration
time to tune the no-load current, then
decelerates. Therefore the time necessary for
tuning varies according to the set
acceleration/deceleration time.)

5. During tuning, the set data ("1" or "2") blinks
rapidly and, upon the end of tuning, the next

Selecting Functions 5-29

5

function code (P05) is displayed. When the
FWD or REV terminal is connected to start
tuning, disconnect the terminal.

Note) Turn the BX and RST terminals off

before starting tuning.

WARNING

• If auto tuning is set at "2", the motor

turns at a half of the base frequency.
Make sure that the motor is disconnected
from the mechanical units and that no
danger results from the rotation.

Otherwise injuries could occur.

Motor 1 (Online tuning)

•

The motor temperature changes after
operation for a long time, changing the motor
speed. Use online tuning to reduce the speed
fluctuation caused by temperature changes of
the motor.

P05

Setting State of operation
0

Inactive

1

Active

Motor 1 (No-load current)

•

This parameter is the no-load current
(exciting current) of motor 1.

Setting range: 0.00 to 99.9 A

Motor 1 (%R1 setting)

Motor 1 (%X setting)

•

Write these parameters when a motor other
than a standard three-phase motor is used
and the impedance between the inverter and
motor and motor constant are already known.

•

Calculate %R1 in the following formula.

where R1:

Resistance of primary coil of motor for single
phase [ohm]

Cable R:

Resistance of output cable for single phase

[ohm]
V: Rated voltage [V]
I: Rated motor current [A]

P08

P07

P06

•

Calculate %X in the following formula.

where
X1: Primary leakage reactance of motor [ohm]
X2: Secondary leakage reactance of motor

(conversion to primary value) [ohm]
XM: Motor excitation reactance [ohm]
Cable X: Reactance of output cable [ohm]
V: Rated voltage [V]
I: Rated motor current [A]
Note) Use the reactance effective at F04
"Base frequency 1".

•

Add the value for a reactor and filter

connected to the output circuit. If the cable

value can be ignored, the cable value should

be "0".

Motor 1
(Slip compensation control 1)

•

When the load torque changes, the motor slip

changes and the motor speed fluctuates.

With the slip compensation control, a

frequency proportional to the motor torque is

added to the output frequency of the inverter

to minimize the fluctuation of the motor speed

caused by torque changes.

Setting range: 0.00 to 15.00 Hz

•

Calculate the slip compensation data in the

following formula.

(Slip) = (Synchronized speed) - (Rated

speed)

Motor 1 (Slip compensation
response time 1)

•

Set the response time for slip compensation.
Note) With a small setting, the response time

becomes shorter, but regeneration may
cause overvoltage tripping with some
loads. In this case, set this function to
longer time.

P10

P09

5-30 Selecting Functions

5

OC1, OC2, OC3 Overcurrent
OU1, OU2, OU3 Overvoltage
OH1 Overheated heat sink
dbH Overheated braking resistor
OL1 Overloaded motor 1
OL2 Overloaded motor 2

OLU Overloaded inverter

H: High Performance Functions

Total operation time

•

The total power-on time of the inverter is
displayed.
A number between 0 and 6500 is displayed,
indicating 0 to 65000 hours. (The time is
displayed in ten hours, though the inverter
counts each hour. The time shorter than one
hour is not counted.)

Trip history

•

A history of the latest four events of activation
of protective functions is stored in

memory. To call up each event, press the I
key. Press the or key to confirm the
history.

H02

H01

Procedure Dislay Remarks

example

1 Call up

2

The latest
protective operation
is displayed.

3 The protective

operation before
the previous one is
displayed.

4 The protective

operation before
the two previous
ones is displayed.

5 The protective

operation before

the three previous

ones is displayed.

6

dne

---4.

1CO3

1HO2.

2UO1.

20H

20H

→

→

→

→

→

→

→

→

FUNC
DATA

V

V

V

V

V

V

V

V

V

V

The new record of protective operation is stored
in the latest protective operation memory, and
the previous records are shifted one by one, and
the record of protective operation before the
four previous ones is deleted.

Data initializing (Data reset)

•

This function restores (initializes) the factory
data over alterations made by the user.
Setting 0: Disabled

1: Initialize
Press the and keys simultaneously to
change the setting to "1", then press the key
to initialize the settings of all functions. After

H03

initialization is completed, the setting
automatically returns to "0".

Auto-reset (Times)

Auto-reset (Reset interval)

When the protective function of the inverter
which starts the retry function is activated,
operation of the inverter protective function is
canceled to restart the inverter automatically
instead of an alarm and output stop.

•

Set the number of resetting cycles of the
protective function.
Setting range: 0 to 10 (0: retry inactive)

•

Set the wait time from activation of a
protective function to resetting.
Setting range: 2 to 20 s

•

Inverter protective functions for retry and start

H05

H04

H05

H04

STOP

V

FUNC

DATA

•

When the data of H04 Retry (Times) is set to
1 to 10, retry operation starts and the time set
at H05 "Retry (Reset interval)" elapses, then
an inverter start command is automatically
input. If the cause of the alarm has been
removed, the inverter starts without entering
the alarm mode. If the cause of the alarm
remains, the protective function is activated
again to wait for the time set at H05 "Retry
(Times)". If the cause of the alarm is not
removed after the number of repetition cycles
set at H04 "Retry (Reset interval)", the
inverter enters the alarm mode.

WARNING

If the retry function has been
selected, the inverter may automatically
restart according to some causes after
tripping. (Design the machine so that human
safety is ensured after restarting.)

Otherwise an accident could occur.

Selecting Functions 5-31

5

■ Upon success of retry

■ Upon failure of retry

Fan stop operation

•

With this function, the temperature of the heat
sink is detected while the inverter is turned
on, to turn on or off the cooling fan
automatically. If this function is not selected,
the cooling fan rotates at all times.
Setting 0: No on/off control

1: On/off control (thermostat)

ACC/DEC pattern (Mode select)

•

Select the acceleration/deceleration mode.
Setting 0: Inactive

(linear acceleration/deceleration)
1: S-curve acceleration/deceleration
(Weak)
2: S-curve acceleration/deceleration
(Strong)

3: Non-linear (for variable torque)
When the function is set at "1", "2" or "3", a
change in the acceleration or deceleration time
during acceleration or deceleration is not
reflected immediately. The setting becomes
effective after a constant speed is reached or
the inverter is stopped.

H07

H06

[S-curve acceleration/deceleration]
To reduce the shock of the mechanical system,
the change in the output frequency is made
smooth when the frequency is set.

<Constant of each pattern>

When the acceleration/deceleration time is
extremely long or short, the result is linear
acceleration/deceleration.
[Curved acceleration/deceleration]
Use this option to minimize the
acceleration/deceleration time for an
acceleration/deceleration pattern of the motor
including the operation zone in the constant
output range.

H07 = 1 H07 = 2
(slow S-curve (steep S-curve
pattern) pattern)

Range of 0.05 x
S-curve (Maximum (Maximum
(α) output

frequency [Hz]) frequency [Hz])

S-curve 0.10 x 0.20 x
time (Acceleration (Acceleration
during time [s]) time [s])
acceleration
on (ßacc)

S curve 0.10 x 0.20 x
time (Deceleration (Deceleration
during time [s]) time [s])
deceleration
on (ßacc)

α

α

β

β

β

β

5-32 Selecting Functions

5

Start mode (Rotating motor pickup)

•

This function smoothly starts a motor
coasting due to an external force or the like
after momentary power failure.
The speed of the motor is detected upon
power recovery or restart and the same
frequency as that for the motor speed is
output. Therefore the motor starts smoothly
without a shock. However, when the coasting
speed of the motor converted in the inverter
frequency exceeds 120 Hz, setting of F03
"Maximum frequency 1" or setting of F15
"Frequency limiter (High)", the regular
starting method is adopted.

H09

Setting Regular starting Restarting after

momentary

power failure
0 Inactive Inactive
1 Inactive Active
2 Active Active

•

Description of setting

1: This function is effective when the setting of

F14 "Restart after momentary power failure
(Operation selection)" is "2" or "3".
Starting is made at the same frequency as
that for the coasting speed.

2: Upon restart after momentary power failure,

operation command ON and other starting
methods, the speed of the coasting motor is
detected and starting is made at the same
frequency as that for the coasting speed.

Note) When this function is used, use the

following setting to detect the accurate

rotation speed of the motor.
When a non-standard motor is used or when
the wiring length is long, perform P04 Tuning.

Energy-saving operation

•

When the output frequency for a small load is
constant (constant speed operation) and the
setting of F09 "Torque boost 1" is other than
"0", the output voltage is automatically
lowered to minimize the product (power) of
the voltage and the current.
Setting 0: Inactive

1: Active

Notes)

1. Use this function for fans, pumps or other
square reduction torque loads. If this function
is applied to a constant torque load or to an
application with a rapidly changing load, there
is a delay in the control response.

2. The energy-saving operation is automatically

canceled to resume regular operation during
acceleration or deceleration or when the torque
limiter function is activated.

H10

Dec mode

•

Select the stopping method of the inverter
after a stop command.
Setting 0: Normal

(Deceleration to stop based on data
of H07 "ACC/DEC pattern")
1: Coast-to-stop

Note) This function is not activated when the

set frequency is lowered to stop. The
function is activated only when a stop
command is input.

Instantaneous overcurrent limiting

•

When the motor load abruptly changes to
cause a current exceeding the protective
level of the inverter to flow, the inverter trips
due to the overcurrent. The Instantaneous
overcurrent limiting function controls the
inverter output within the protective level even
upon an excessive load.

•

The operation level of the Instantaneous
overcurrent limiting cannot be adjusted. Use
the torque limit function to set on output
limitation.

•

The torque generated by the motor may
become low in a Instantaneous overcurrent
limiting state. Therefore deactivate the
momentary overcurrent limit function for
applications such as the elevator where the
torque generated by the motor must not be
low. In this case, because the inverter trips
due to an overcurrent when a current
exceeding the protective level of the inverter
flows, use forcible stopping measures by a
mechanical brake or other protective
measures.
Setting 0: Inactive

1: Active

Auto-restart (Restart time)

•

When the power supply to a running motor is
shut off or power failure occurs and the power
supply is quickly switched to another system,
the phase of the voltage of the new system
deviates from the phase of the voltage
remaining in the motor and electrical or
mechanical trouble may be developed. When
switching the power supply system in a short
time, write the time for attenuation of the
remaining voltage from the motor after power
shutoff. The setting is effective during restart
after momentary power failure.

Setting range: 0.1 to 5.0 s
If the duration of momentary power failure is
shorter than the wait time data, restart is made
after this time. If the duration of momentary
power failure is longer than the wait time data,

H13

H12

H11

Selecting Functions 5-33

5

restart is made after completion of operation
preparation of the inverter (about 0.2 to 0.5 s).

Auto-restart(Frequency fall rate)

•

This function determines the drop ratio of the
output frequency for the synchronization
between the output frequency of the inverter
and the motor speed, that is, the speed of
synchronization. This function is also used to
drop the frequency as a stall prevention
function for an excessive load during regular
operation.
Setting range: 0.00, 0.01 to 100.0 Hz/s
Set "0.00" to drop according to the currently
selected deceleration time.

Note) A large frequency drop ratio may cause

temporary increase in the regeneration
energy from the load, activating the
overvoltage protection function. On the
contrary, a small frequency drop ratio
may cause long operation time of the
current limit function, activating the
inverter overload protection function.

PID control (Mode select)

to

PID control (Feedback filter)

•

The PID control detects a control amount
(feedback value) from the sensor of the
controlled object and compares it with the
reference value (set temperature, etc.). Upon
difference between them, an action is taken
to reduce the difference. That is, this control
method makes the feedback value become
consistent with the reference value. This
method can be applied to flow control,
pressure control, temperature control and
other process controls.

H25

H20

H14

•

Because forward and reverse operation can
be selected for the output of the PID
controller, the rpm of the motor can be
increased or decreased in relation to the
output of the PID controller.

Setting 0: Inactive

1: Normal operation
2: Inverse operation

H20

•

The reference value can be given at F01

"Frequency command 1" or directly input from
the keypad panel.
Select an arbitrary terminal from E01 "X1
terminal (Function selection)" through E05
"X5 (Function selection), and set data "9"
(frequency command 2 / frequency command

1).
To obtain the reference value from F01
"Frequency command 1", input an OFF signal
to the selected terminal. When inputting
directly from the keypad panel, turn the
selected terminal on.

•

The process amount of the reference value

and feedback value can be displayed based
on the setting at E40 "Display coefficient A"
and E41 "Display coefficient B".

Display coefficient A

Display coefficient B

0 100%

100% reference value
feedback value

5-34 Selecting Functions

5

PID control (Feedback signal)

•

Select the feedback value input terminal and
electrical specification of the terminal. Select
one from the table below according to the
specifications of the sensor.

H21

Setting Selection item

0 Control terminal 12, normal

operation (voltage input 0 to +10V)

1 Control terminal C1, normal

operation (current input 4 to 20 mA)

2 Control terminal 12, inverse

operation (voltage input +10 to 0V)

3 Control terminal C1, inverse

operation (current input 20 to 4 mA)

PID control (P (P gain))

•

Generally speaking, P: gain, I: integral time
and D: differential time are not used alone.
Functions are combined like: P control, PI
control, PD control and PID control.

•

P action
An operation where there is proportional
relationship between the amount of operation
(output frequency) and deviation is called P
operation. Therefore the P action outputs an
operation amount proportional to the
deviation. However, the deviation cannot be
eliminated by only the P action.
Setting range: 0.01 to 10.00 times

H22

Note) The feedback value of the PID control

can be input only in the positive polarity.
The negative polarity (0 to -10 Vdc, -10
to 0 Vdc, etc.) cannot be input. Therefore
the control cannot be applied to
reversible operation using the analog
signal.

•

The P gain is a parameter which determines

the degree of response to the deviation of P

action. With a large gain, the response is

quick but hunting is likely to occur. With a

small gain, the response is stable but slow.

Selecting Functions 5-35

5

PID control (I (integral time))

•

I action

An operation where the speed of the change
in the amount of operation is proportional to
the deviation is called I action. Therefore the
I action outputs an operation amount
obtained from integration of the deviation. For
this reason, the I action is effective to
converge the control amount to the reference
value. However, response is slow to the
deviation with abrupt changes.

H23

Setting range: 0.0 Inactive, 0.1 to 3600 s
To determine the effect of the I action,
I: integral time is used as a parameter. With a
long integral time, the response is slow and
reaction to an external force is small. With a
small integral time, the response is quick.
When the integral time is too small, there is
hunting.

PID control (D (Differential time))

•

D action

An operation where the amount of operation
is proportional to the differential value of the
deviation is called D action. Therefore, the D
action outputs an operation amount obtained
from the differentiation of the deviation and the
response to abrupt changes is quick.

H24

time, vibration may become larger. With a
small differential time, decrease in the
deviation becomes smaller.

•

PI control

Deviation remains with P action only. To
eliminate the remaining deviation, I action is
added and P + I control is generally adopted.
The PI control functions to always eliminate
deviation in spite of changes in the reference
value and stationary disturbances. However,
when the I action is strong, response to the
deviation with abrupt changes is slow.
P action only can be used for loads with an

integral factor.

•

PD control

Upon deviation, the PD control generates an
operation amount larger than that obtained by
D action only, to reduce the increase of the
deviation. When deviation is reduced to
small, the function of the P action is made
smaller.
For a load including integral factors to be
controlled, the P action alone can cause
hunting in the response due to the action of
the integral factors. The PD control is used in
such cases to decrease hunting of the P
action to stabilize. That is, this control method
is applied to loads having no braking in the
process itself.

•

PID control

The function of the I action to reduce the
deviation and the function of the D action to
suppress hunting are combined with the P
action. Accurate responses without deviation
are obtained.
This control method is effective to loads
which take time from generation of deviation
to development of a response.

PID control (Feedback filter)

•

This function provides a filter for the feedback

signal input at control terminal 12 or C1. The
filter makes the operation of the PID control
system stable. However, an excessively large
setting causes a poor response.
Setting range: 0.0 to 60.0 s

H25

Setting range: 0.00 Inactive, 0.01 to 10.0 s

D: differential time is used as a parameter to

determine the effect of the D action. With a

long differential time, decrease in the

vibration caused by the P action upon

deviation is quick. With too large a differential

5-36 Selecting Functions

5

PTC thermistor (Mode select)

•

Select this function for a motor equipped with
a PTC thermistor for overheat protection.
Setting0: Inactive
1: Active
Connect the PTC thermistor as shown in the
figure. The protective operation is common
with the external alarm input. Therefore the
protective function operates at the "external
alarm".

H26

PTC thermistor (Level)

•

The voltage input at terminal [C1] is
compared with the set voltage and, when the
input voltage at terminal [C1] is larger than
the set voltage (operation level), H26 "PTC
thermistor (Operation selection)" is activated.
Setting range: 0.00 to 5.00 V
(The setting smaller than 0.10 is handled as

0.10.)

•

The alarm temperature is determined by the
PTC thermistor and the internal resistance of
the PTC thermistor changes largely at the
alarm temperature. Set the operation
(voltage) level using this change of
resistance.

H27

From the figure of H26 "PTC thermistor
(Operation selection)", the 250-ohm resistor and
the PTC thermistor (resistance Rp) configure a
parallel circuit. Therefore voltage VC1

(operation level) of terminal [C1] is calculated in
the following equation.

The operation level can be set when RP of the
VC1 calculation equation is in the following
range.
RP1 < RP < RP2
To determine RP simply, calculate the following
equation.

Droop operation

•

To drive one machine with two or more
motors, a larger load is exerted on the motor
with a larger speed. The droop control
attributes drooping characteristics to the
speed during load fluctuation to balance the
load.

•

The drooping amount is calculated in the
following formula.

H28

Setting range: - 9.9 Hz to 0.0 Hz

Serial link (Function select)

•

RS485 (standard accessory) can be
connected as a link function (communication
function).

•

As a link function, the following items are
possible.

H30

Selecting Functions 5-37

5

1) Monitoring (monitoring of various data,
confirmation of function code data)

2) Frequency setting

3) Operation command (FWD, REV and
other commands set for digital input)

4) Function code data writing

Setting range: 0 to 3

Setting Frequency Operation

setting command
0 Invalid Invalid
1 Valid Invalid
2 Invalid Valid
3 Valid Valid

The validity of communication can be switched
by a digital input. Set the link functions available
through communications.

The monitor function and function code data
writing function are always valid. When the
communication is disabled by means of a digital
input, a state similar to setting "0" is obtained.

RS485 (address)

to

RS485 (Response interval)

•

Set the various conditions of RS485
communication. Set according to the
specifications of the host unit. Refer to
section 9-4 for protocol and other
specifications.

•

Set the station address of RS485.

Setting range: 1 to 31

RS485 (Mode select on no response

error)

•

Set the communication error handling
process and the error handling timer value.
Setting range: 0 to 3

H32

H31

H39

H31

Setting Communication error handling process
0 Immediate Er 8 trip (coast to stop)
1 Operation continues until the timer time

elapses, then Er 8 trip.

2 Operation continues and retry is made

until the timer time elapses, then Er 8
trip upon a communication error or
continuation of operation upon no
communication error.

3 Operation continues.

RS485 (Timer)

•

Set the error handling timer value.
Setting range: 0.0 to 60. 0 s

RS485 (Baud rate)

•

Set the transmission speed.

H34

H33

Setting Transmission speed
0 1 9 2 0 0 bit/s
1 9 6 0 0 bit/s
2 4 8 0 0 bit/s
3 2 4 0 0 bit/s
4 1 2 0 0 bit/s

Setting Data lenght
0 8 bits
1 7 bits

Setting Stop bit
0 2bits
1 1bit

Setting Parity bit
0 None
1 Even
2 Odd

RS485 (Data length)

•

Set the data length.

H35

RS485 (Parity check)

•

Set the parity bit.

H36

RS485 (Stop bits)

•

Set the stop bit.

H37

RS485 (No response error detection
time)

•

In a system where there is always an access
to the station at certain intervals, no access
caused by broken wire or other errors is
detected and the inverter trips in Er8.
Setting range: 0 to 60 s
0: No detection

RS485 (Response interval)

•

Set the time taken until a response is sent
back to the host unit upon a request.
Setting range: 0.00 to 1.00 s

H39

H38

5-38 Selecting Functions

5

A: Alternative motor parameters

Maximum frequency 2

The maximum frequency output by the inverter
for motor 2. This parameter functions in the
same way as F03 "Maximum output frequency
1". For the description, refer to F03 "Maximum
output frequency 1".

Base frequency 2

The maximum output frequency in the constant
torque zone of motor 2, that is, the output
frequency at the rated output voltage. This
parameter functions in the same way as F04
"Base frequency 1". For the description, refer to
F04 "Base frequency 1".

Rated voltage 2 (at base
frequency 2)

The rated output voltage supplied to motor 2.
This parameter functions in the same way as
F04 "Rated voltage 1". For the description, refer
to F05 "Rated voltage 1".

Maximum voltage 2 (at maximum
frequency 2)

The maximum output voltage of the inverter for
motor 2. This parameter functions in the same
way as F06 "Maximum voltage 1". For the
description, refer to F06 "Maximum voltage 1".

Torque boost 2

The torque boost function of motor 2. This
parameter functions in the same way as F09
"Torque boost 1". For the description, refer to
F09 "Torque boost 1".

Electronic thermal overload relay for
motor 2 (Select)

Electronic thermal overload relay for
motor 2 (Level)

Electronic thermal overload relay for
motor 2 (Thermal time constant)

The electronic thermal overload relay functions
of motor 2. These parameters function in the
same way as F10 through F12 Electronic
thermal overload relay for motor 1. For the
description, refer to F10 through F12.

Torque vector control 2

The torque vector function of motor 2. This
parameter functions in the same way as F42
"Torque vector control 1". For the description,
refer to F42 "Torque vector control 1".

A09

A08

A07

A06

A05

A04

A03

A02

A01

Maximum temperature of heat sink

•

The maximum value in each hour is displayed
in degree C.

Maximum effective current

•

The maximum value in each hour is displayed
in A.

Main circuit capacitor life

•

The capacity of the capacitor in the main
circuit is displayed in %. For the measuring
conditions, refer to section 8-2 (1)
"Measurement of capacitance of capacitor in
main circuit".

Cooling fan operation time

•

Integral hours is displayed. The displayed
time is 0 to 6500, indicating 0 to 65000 hours.
(Though the displayed value is in ten hours,
the inverter adds each hour. Operation
shorter than one hour is not counted.)

Inverter ROM version

•

The version of the software of the inverter is
displayed.

Keypad panel ROM version

•

The version of the software of the keypad
panel is displayed.

Option ROM version

•

For inverters with optional equipment, the
version of the optional software is displayed.

H46

H45

H44

H43

H42

H41

H40

Selecting Functions 5-39

5

of motor 2 poles

The number of poles of driven motor 2. This
parameter functions in the same way as P01
"Number of motor 1 poles". For the description,
refer to P01 "Number of motor 1 poles)".

Motor 2 (Capacity)

The capacity of motor 2. This parameter
functions in the same way as P02 "Motor 1
(Capacity)". For the description, refer to P02
"Motor 1 (Capacity)". However, the function of
related motor data changes to A12 "Motor 2
(Rated current)", A15 "Motor 2 (No-load
current)", A16 "Motor 2 (%R1 setting)" and A17
"Motor 2 (%X setting)".

Motor 2 (Rated current)

The rated current of motor 2. This parameter
functions in the same way as P03 "Motor 1
(Rated current)". For the description, refer to
P03 "Motor 1(Rated current)".

Motor 2 (Tuning)

Tuning of motor 2. This parameter functions in
the same way as P04 "Motor 1 (Tuning)". For
the description, refer to P04 "Motor 1 (Tuning)".

Motor 2 (Online turning)

Online tuning of motor 2. This parameter
functions in the same way as P05 "Motor 1
(Online tuning)". For the description, refer to
P05 "Motor 1 (Online turning)".

Motor 2 (No-load current)

The no-load current of motor 2. This parameter
functions in the same way as P06 "Motor 1 (No­load current)". For the description, refer to P06
"Motor 1 (No-load current)".

Motor 2 (%R1 setting)

Motor 2 (%X setting)

%R1 and %X of motor 2. These parameters
function in the same way as P07 "Motor 1 (%R1
setting)" and P08 "Motor 1 (%X setting)". For the
description, refer to P07 and P08.

Motor 2 (Slip compensation
control 2)

The slip compensation control of motor 2. This
parameter functions in the same way as P09
"Motor 1 (Slip compensation control 1)". For the
description, refer to P09 "Motor 1 (Slip
compensation control 1)".

A18

A17

A16

A15

A14

A13

A12

A11

A10

Motor 2 (Slip compensation
response time 2)

Set the response time for slip compensation of
motor 2. This parameter functions in the same
way as P10 "Motor 1 (Slip compensation
response time)". For the description, refer to
P10 "Motor 1 (Slip compensation response
time)".

o: Optional function

Option selection

0: Option inactive
1: Option active
Set 0 when option card is used.
Refer to the instruction manual of option card
for detail of optional functions.

o00

A19

6-1 Protective Operation

6

6. Protective Operation

6-1 List of Protective Operations

When an error occurs to the inverter, a
protective function is activated to trip the
inverter immediately, displaying the name of the
alarm at the LED and allowing the motor to
coast to stop.

Name of alarm Display Description of operation

Overcurrent OC1 During The protective function is activated when an overcurrent flowing in

protection acceleration the motor or a short circuit or ground fault in the output circuit

OC2 During causes the instantaneous inverter output current to exceed the

deceleration overcurrent detection level.

OC3 During constant

speed operation

Overvoltage OU1 During The protective function is activated when the regenerative power from

protection acceleration the motor increases to cause the DC link voltage of the main circuit

OU2 During to exceed the overvoltage detection level (Approx. 400 Vdc for 200V

deceleration class, Approx. 800V for 400V class). When an excessive voltage is

OU3 During constant added to the source voltage, the inverter trips due to the overvoltage,

speed operation but inverter protection against the overvoltage is impossible.

Undervoltage LU The protective function is activated when the source voltage drops to cause the DC

protection link voltage in the main circuit to become lower than the undervoltage detection

level (Approx. 200 Vdc for 200V class, Approx. 400V for 400V class). If F14 Restart after
momentary power failure has been selected, no alarm display is given. If the voltage
drops below the control power maintenance level, no alarm is displayed.

Input phase Lin When the inverter is operated while one of the three phases of the power supply

loss connected to the main power supply input terminals L1/R, L2/S and L3/T of the main

protection circuit is missing or there is an unbalance among the three-phase voltages, the rectifying

diode or smoothing capacitor of the main circuit may be broken. The inverter is stops
upon an alarm in these cases.

Heat sink OH1 The protective function is activated when the temperature of the heat sink of the inverter

overheat overheat is high because of a broken cooling fan or for other reasons.

External OH2 The protective function is activated by a contact signal from an alarm contact of the

alarm external device such as the braking unit, braking resistor, and external thermal overload

input relay connected to the control circuit terminal (THR). Or an overheat protective function is

activated by the PTC thermistor.

Braking dbH If the electronic thermal overload relay (for braking resistor) has been selected for

resistor function code F13, the protective function is activated upon a high operation frequency of

overheat the braking resistor to prevent the resistor from being burned due to the temperature rise.

Motor 1 OL1 If electronic thermal overload relay 1 has been selected for function code F10, the

overload protective function is activated by a motor current exceeding the set operation level.

Motor 2 OL2 If motor 2 has been selected and driven and electronic thermal overload relay 2 has been

overload selected for function code A06, the protective function is activated by the current in motor

2 exceeding the set operation level.

Inverter OLU The protective function is activated by an output current exceeding the overload current

overload rating to protect the semiconductor elements in the main circuit of the inverter from high

temperatures.
Memory error Er1 The protective function is activated by a data writing error or other errors in the memory.
Keypad panel Er2 The protective function is activated when a data transmission error or transmission

communication stoppage is detected between the keypad panel and the control section in the keypad

error panel operation mode.

CPU error Er3 The protective function is activated by electric noise or other errors developed in the

CPU, or if P24 is overloaded.

Option error Er4 Error during operation of option

Er5

Output phase Er7 The protective function is activated during auto tuning when there is a broken wire or no

loss connection in the inverter output circuit.

RS485 Er8 The protective function is activated when a communication error occurs during

communication communication through RS485.

error

Table 6-1-1 List of alarm display and protective operations

Protective Operation 6-2

6

6-2 Alarm Reset

When the inverter trips, remove the cause then
press the PRG/RESET key on the keypad panel
or input a reset command from the RST control
terminal to reset the tripping state. Because the
reset command is activated by an edge, supply
the command in an OFF - ON - OFF sequence
as shown in Fig. 6-2-1.
When resetting the tripping state, deactivate the
operation command. If the operation command
is left turned on, the inverter starts operation
immediately after the error is reset.

Reset command

Keypad panel display

Alarm output

10 ms or longer

ON

Alarm display

OFF

Regular display
(ready to operate

OFF

ON OFFOFF

Trip

Figure 6-2-1

WARNING

If an alarm reset is made with the

operation signal turned on, a sudden
start will occur. Check that the operation
signal is turned off in advance.

Otherwise an accident could occur.

7-1 Troubleshooting

7

7. Troubleshooting

7-1 When Protective Function Activates

(1) Overcurrent

Troubleshooting 7-2

7

(2) Overvoltage

(3) Undervoltage

7-3 Troubleshooting

6) Inverter overload, motor overload

4) Inverter inside overheat or heat sink
overheat

(5) Eternal alarm input

7

Troubleshooting 7-4

7

(7) Memory error Er1, keypad panel
communication error Er2, CPU error Er3

8) Output wiring error

(9) Input phase loss

7-5 Troubleshooting

7-2 When Motor rotates Incorrectly

(1) The motor does not rotate.

The motor does not start when a coast-to-stop
command or DC braking command is being
input.

7

Troubleshooting 7-6

7

(2) The motor rotates but the speed does not change.

The change in the rotation speed of the motor is
also small in the following cases.

— "F01 "Frequency command 1" and C30

"Frequency command 2" are set at "3" and a
signal is input from both of control terminals
12 and C1, and there is no change in the
sum of them.

— The load is excessively large and the torque

limit and current limit functions are activated.

7-7 Troubleshooting

7

(3) The motor loses speed during acceleration.

(4) Excessive heat generation from motor

Maintenance and Inspection 8-1

8

8. Maintenance and
Inspection

Perform daily and periodic inspection to avoid
problems and ensure reliable operation for a
long time. Take care of the following items
during work.

8-1 Daily Inspection

Visually inspect errors in the state of operation
from the outside without removing covers while
the inverter operates or while it is turned on.

1) Check if the expected performance
(satisfying the standard specification) is
obtained.

2) Check if the surrounding environment
satisfies the standard specification.

3) Check that the display of the keypad panel

is free from errors.

4) Check for abnormal noise, excessive

vibration or burning smell.

5) Check for traces of overheat, discoloration

and other defects.

WARNING

• Turn the power off and wait for at

least five minutes before starting
inspection. (Further, check that the charge
lamp is unlit and measure the DC voltage
across the P (+) and N (-) terminals to check
that it is lower than 25V.)

Otherwise electric shock could occur.

• Maintenance and inspection and parts

replacement should be made only by
appointed persons. (Take off watch, rings
and other metallic matter before starting
work.) (Use insulated tools.)

• Never modify product.

Otherwise electric shock or injuries
could occur.

Table 8-2-1 List of periodic inspection

8-2 Periodic Inspection

After stopping the operation, turn the power off
and remove the front cover to perform periodic
inspection.
The smoothing capacitor at the DC section of
the main circuit takes time to be discharged
after the power is turned off. After checking that
the charge lamp (CRG) is unlit, check that the
DC voltage is lower than the safety level (25
VDC) using a multimeter or the like before
starting work.

Check part Check item How to inspect Evaluation criteria

Environment 1) Check the ambient temperature, 1)Check visually or 1) The standard

humidity, vibration and atmosphere measure using specification must be
(dust, gas, oil mist, water drops). apparatus. satisfied.

2) Check if tools or other foreign 2) Visual inspection 2) No foreign or
matter or dangerous objects are left dangerous objects are
around the equipment. left

Voltage Check if the voltages of the main Measure using a The standard

circuit and control circuit are correct. multimeter or the like. specification must

be satisfied.

Keypad 1) Check if the display is clear. 1), 2) Visual inspection 1, 2) The display can

panel 2) Check if there is missing parts be read and there is

in the characters. no fault.

Structure 1) Abnormal noise and excessive 1)Visual or hearing 1),2),3),4),5)

such as vibration inspection No abnormalities

frame 2) Loose bolts (tightened parts) 2) Retighten

and cover 3) Deformation and breakage 3), 4), 5) Visual

4) Discoloration and deformation inspection
caused by overheat

5) Stains and dust

8-2 Maintenance and Inspection

8

Remarks: Remove dust using cleaning cloth
which is chemically neutral. Use a vacuum
cleaner to remove dust.

Common 1) Check if bolts and screws are tight 1) Retighten 1), 2), 3)

and not missing. 2), 3) Visual No abnormalities

2) Check the devices and insulators for inspection
deformation, cracks, breakage and
discoloration caused by overheat
and deterioration.

3) Check for dust.

Conductor 1) Check the conductor for discoloration 1), 2) Visual 1), 2)
and wire and distortion caused by overheat. inspection No abnormalities

2) Check the sheath of the cable for
cracks and discoloration.

Terminal Damage Visual inspection No abnormalities
block

Smoothing 1) Check for electrolyte leakage, 1), 2) 1), 2)
capacitor discoloration, cracks and swelling of Visual inspection No abnormalities

the case. 3) Monitor H42 Life 3) Capacitance>

2) Check for safety valve protrusion. judgment and (Initial value) x

=

measure with 0.85

3) Measure the capacitance capacitance probe

Resistor 1)Check for odor caused by overheat 1) Smelling and 1) No abnormalities

and cracked insulator. visual inspection 2) Within ± 10% of

2) Check for broken wire. 2) Visual inspection displayed resistance
or measurement
with multimeter under
disconnection of
one lead

Transformer Check for abnormal noise Hearing, visual and No abnormalities

and odor. smelling inspection

Relay 1) Check for chatters during operation. 1) Hearing 1),2)

2) Check for rough contacts. inspection No abnormalities

2) Visual inspection

Control 1) Check for loose screws and 1) Retighten. 1),2),3),4)
printed connectors. 2) Smelling and No abnormalities
circuit 2) Check for odor and discoloration. visual inspection
board, 3) Check for cracks, breakage, 3), 4) Visual
connector deformation and rust. inspection

4) Check the capacitors for electrolyte

leaks and deformation.

Cooling fan 1) Check for abnormal noise and 1) Hearing and 1) Smooth rotation

excessive vibration. visual inspection, 2),3)

2) Check for loose bolts. or turn manually No abnormalities

3) Check for discoloration caused by (be sure to turn

overheat. the power off)

4) Check that fan is operating when

2) Retighten.

power is restored.

3) Visual inspection

4) Life judgment
based on
maintenance data*

Ventilation Check the heat sink, intake and Visual No abnormalities
path exhaust ports for clogging and foreign inspection

matter.

Main circuit

Main circuit

Control circuit

Cooling system

Maintenance and Inspection 8-3

8

• Judgment of life using maintenance data

The maintenance data of function codes H42
and H43 can be used to display data for the
judgment of the capacitance of the capacitor in
the main circuit and the life of the cooling fan to
obtain a measure for the judgment of parts
replacement. The capacitor life forecast signal is
issued at the Y1 and Y2 terminals according to
the measured capacitance after the capacitance
of the capacity reaches 85%.
(1)Measurement of capacitance of capacitor in

main circuit
This inverter is provided with a function
where the capacitance of the main circuit
capacitor is automatically measured upon
shutoff of the inverter under certain
conditions and it is displayed on the keypad
panel upon power-up.
The capacitance of the capacitor is displayed
in the reduction ratio (% display) of the initial
value stored inside the inverter before

shipment.
Procedure of measurement of capacitor
capacitance

1. Remove the optional card from the
inverter if it is mounted. Disconnect the
braking unit or direct current bus to
another inverter from the P (+) and N (-)
terminals of the main circuit if there is
any. The power factor improving reactor
(DC reactor) may not be disconnected.

2. Turn the digital inputs (FWD, REV, X1­X5) at the control terminals off.
Disconnect the RS 485 communication
terminal if it is connected.

3. Turn the main power supply on. Check
that the cooling fan rotates. Check that
the inverter is stopped. (The "OH2
external alarm" caused by deactivated
digital input terminals does not cause a
problem.)

4. Turn the main power supply off.

5. After the charge lamp is unlit completely,
turn the main power supply on again.

6. Monitor function code H42 to check the
capacitor capacitance (%).

(2)Life of cooling fan

Function code H43 indicates the total
operation time of the cooling fan. The time is
integrated in units of an hour and fractions
shorter than an hour are ignored.
The actual life of the fan is largely effected by
the temperature. Take the time as a
measure.

Part Judgment level
Main circuit 85% or lower of the initial

capacitor value
Cooling fan 30,000 hours (4.0 kW or

less), 25,000 hours (5.5 kW
or more) *1

Table 8-2-2 Measure for judgment of life based on
maintenance data

*1: Assumed life of cooling fan at ambient
inverter temperature of 40 degree C.

8-4 Maintenance and Inspection

8

8-3 Measurement of Current and

Voltage in Main Circuit

Because the voltage and current of the power
supply (input) of the main circuit of the inverter
and the output (motor) include harmonic
components, the indicated value varies
according to the type of the meter. Use meters
indicated in Table 8-3-1 when measuring with
meters for commercial frequencies.
Marketed power factor meters measuring phase
difference between the voltage and current
cannot measure the power factor. To obtain the
power factor, measure the power, voltage and

In case of Single-phase

Table 8-3-1 Meters for measurement of main circuit

Fig 8-3-1 Connection of measuring instruments

In case of Three-phase

Input (power supply) side Output (motor) side Link voltage

(P(+)-N(-))

Voltage Current Voltage Current

Ammeter Voltmeter Wattmeter Ammeter Voltmeter Wattmeter DC voltmeter

A

R,S,T

V

R,S,T

W

R,S,T

A

U,V,W

V

U,V,W

W

U,V,W

V

Moving iron Rectifier or Digital Moving iron Rectifier Digital Moving coil

type moving iron power type type power type

type meter meter

current on each of the input and output sides
and calculate in the following formula.

Item

Name of

meter

Type of

meter

Symbol of

meter

Note) When the output voltage is measured by a
rectifier type, an error may be included. To increase
the accuracy, use a digital AC power meter.

A

U

A

V

A

W

WU

W

W

V

U

V

V

V

W

A

W

V

Power
Supply

L1/L

L2/N

V

+-

P(+) N(-)

U

V

W

M

Motor

VXSM***-1 VXSM***-3

A

U

A

V

A

W

WU

W

W

V

U

V

V

V

W

A

R

A

S

A

T

WR

W

T

V

R

V

S

V

T

Power
Supply

L1/R

L3/T

L2/S

V

+-

P(+) N(-)

U

V

W

M

Motor

Maintenance and Inspection 8-5

8

(2) Do not perform a Megger test or withstand

voltage test to the insulation test control
circuit of the control circuit. Prepare a high
resistance range tester for the control circuit.

1) Disconnect all the external wiring from the
control circuit terminals.

2) Perform a continuity test to the ground. 1
MΩ or a larger measurement indicates a
correct state.

(3) External main circuit and sequence

control circuit
Disconnect all the inverter terminals so that
the test voltage is not applied.

8-4 Insulation Test

Because an insulation test is made in the factory
before shipment, avoid a Megger test. If a
Megger test is unavoidable, follow the
procedure below. Because a wrong test
procedure will cause breakage of the inverter,
take sufficient care.
A withstand voltage test will cause breakage of
the inverter similarly to the Megger test if the
test procedure is wrong. When the withstand
voltage test is necessary, contact IMO.
(1) Megger test of main circuit

1) Use a 500 VDC Megger and shut off the

main power supply without fail during
measurement.

2) If the test voltage leaks to the control

circuit due to the wiring, disconnect all the
control wiring.

3) Connect the main circuit terminals with a

common cable as shown in Fig. 8-4-1.

4) The Megger test must be limited to across

the common line of the main circuit and
the ground terminal ( G).

5) MΩ or a larger value

displayed at the Megger indicates a correct
state. (The value is for a discrete inverter.)

8-5 Replacement Parts

The life of the part is determined by the type of
the part. The life of the part varies according to
the environment and operating conditions, and
replacement according to Table 8-5-1 is
recommended.

8-6 Inquiries about Product and

Guarantee

(1) When making an inquiry

Upon breakage of the product, uncertainties,
failure or inquiries, report the following
information IMO Precision Controls Ltd.
a) Inverter type
b) SER NO. (serial number of equipment)
c) Date of purchase
d) Inquiries (for example, point and extent of

breakage, uncertainties, failure
phenomena, and other circumstances)

(2) Guarantee of the product

The product guarantee term is 5 years after
the purchase or 60 months from the month
and year of production specified on the
nameplate, whichever comes first. However,
the product will not be repaired free of
charge in the following cases, even if the
guarantee term has not expired.
a) The cause includes incorrect usage or

inappropriate repairs or remodeling.

b) The product is used outside the standard

specified range.

c) The failure is caused by dropping,

damage or breakage during
transportation after the purchase.

d) The cause is earthquake, fire, storm or

flood, lightening, excessive voltage, or
other types of act of God or similar
events.

L1/R L2/S L3/T DB P1 P(+) N(-) UGVW

Megger

+

Name of part Standard Replacement

replacement method and
years others

Cooling fan 3 years Replace with

a new part.

Smoothing 5 years Replace with
capacitor a new part.

(Replace after
inspection.)

Electrolytic 7 years Replace with
capacitors new circuit
on printed board.
circuit board (Replace after

inspection.)

Other parts

-

Determine
after inspection.

Table 8-5-1

Fig 8-4-1

9-1 Specifications

9

*1 The applicable standard motor indicates a 4

pole machine.

*2 The rated capacity indicates 230V output

voltage.

*3 Voltages larger than the source voltage

cannot be output.

*4 Amperage values in brackets () are

applicable to operation with 4 kHz or higher
carrier frequencies (F26 = 4 or more) or

ambient temperatures exceeding 40 degree C.
*5 Tests at standard load condition (85% load)
*6 Indicates the value when using a DC reactor

(DCR).

Item Detail specifications
Inverter type

VXSM 40-1 75-1 150-1 220-1
Nominal applied motor *1 [kW]

0.4 0.75 1.5 2.2
Rated capacity *2[kVA] 1.1 1.9 3.1 4.3
Rated voltage *3[V] Three-phase 200V / 50 Hz, 200V, 220V, 230V / 60 Hz (with AVR function)
Rated current *

4

[A] 3.0 5.0 8.0 11

(2.5) (4.0) (7.0) (10)

Overload capability 150% of rated output current for 1 min.

200% of rated output current for 0.5 s
Rated frequency [Hz] 50, 60Hz
Phases, Voltage, Single-phase 200 to 240 V / 50 to 60 Hz *

10

Frequency
Voltage/frequency Voltage : +10 to -10%

fluctuation Frequency : +5 to -5%
Momentary voltage Operation continues at 165V or higher voltage. When the input voltage

dip capability *

5

drops below 165V from the rated voltage, operation continues for 15 ms.

Rated current [A] 3.5 6.5 11.8 17.7
(With DCR)

(Without DCR) *

9

6.4 11.4 19.8 28.5

Required power supply 0.7 1.3 2.4 3.6
capacity *6 [kVA]

Braking torque *7[%] 70 40
Braking torque *8[%] 150
DC braking Starting frequency: 0.0 to 60 Hz, braking current (0 to 100% in 1%

increment), braking time (0.0 to 30.0 s)
Enclosure (IEC60529) IP20
Cooling method Natural cooling Fan cooling

Mass [kg] 0.7 1.2 1.8 1.9

9. Specifications

9-1 Standard Specifications

(1) Single-phase 200V input

Output ratingsInput ratings

Braking

*7 Indicates the average braking torque for

decelerating and stopping a discrete motor
from 60 Hz. (Varies according to the
efficiency of the motor.)

*8 Indicates the value with an external braking

resistor (option).

*9 Calculated on assumption that the inverter

is connected to 500kVA power supply.

*10 Safe separation for control interface of this

inverter is provided when this inverter is
installed in overvoltage category II. Basic
insulation for control interface of this
inverter is provided when this inverter is
installed in overvoltage category III.

Specifications 9-2

9

Item Detail specifications
Inverter type

VXSM 40-3 75-3 150-3 220-3 400-3 550-3 750-3
Nominal applied motor *1 [kW]

0.4 0.75 1.5 2.2 4.0 5.5 7.5
Rated capacity *2[kVA] 1.1 1.8 2.6 3.9 6.5 9.3 13
Rated voltage *3[V]

Three-phase 380,400,415V/50Hz, 380,400,440,460V/60Hz (with AVR function)

Rated current *4[A] 1.5 2.5 3.7 5.5 9.0 13 18

(1.4) (2.1) (3.7) (5.3) (8.7) (12) (16)

Overload capability 150% of rated output current for 1 min.

200% of rated output current for 0.5 s
Rated frequency [Hz] 50, 60Hz
Phases, Voltage, Three-phase 380 to 480 V / 50 to 60 Hz *

11

Frequency
Voltage/frequency Voltage : +10 to -15% Voltage unbalance 2% or less*

10

fluctuation Frequency : +5 to -5%
Momentary voltage Operation continues at 300V or higher voltage. When the input voltage

dip capability *

5

drops below 300V from the rated voltage, operation continues for 15 ms.

Rated current [A] 0.82 1.5 2.9 4.2 7.1 10.0 13.5
(With DCR)

(Without DCR) *

9

1.8 3.5 6.2 9.2 14.9 21.5 27.9

Required power supply 0.6 1.1 2.1 3.0 5.0 7.0 9.4
capacity *6 [kVA]

Braking torque *7[%] 70 40 20
Braking torque *8[%] 150
DC braking Starting frequency: 0.0 to 60 Hz, braking current (0 to 100% in 1%

increment), braking time (0.0 to 30.0 s)
Enclosure (IEC60529) IP20
Cooling method Natural cooling Fan cooling

Mass [kg] 1.1 1.2 1.3 1.4 1.9 4.5

Output ratingsInput ratings

Braking

(2) Three-phase 400V input

*1 The applicable standard motor indicates a 4

pole machine.

*2 The rated capacity indicates the case for

415V output voltage.

*3 Voltages larger than the source voltage

cannot be output.

*4 Amperage values in brackets () are

applicable to operation with 4 kHz or higher
carrier frequencies (F26 = 4 or more) or

ambient temperatures exceeding 40 degree C.
*5 Tests at standard load condition (85% load)
*6 Indicates the value when using a DC reactor

(DCR).

*7 Indicates the average braking torque for

decelerating and stopping a discrete motor
from 60 Hz. (Varies according to the
efficiency of the motor.)

*8 Indicates the value with an external braking

resistor (option).

*9 Calculated on assumption that the inverter is

connected to 500kVA power supply.
*10 Refer to IEC61800-3 5.2.3.
*11 Safe separation for control interface of this

inverter is provided when this inverter is
installed in overvoltage category II. Basic
insulation for control interface of this inverter
is provided when this inverter is installed in
overvoltage category III.

9-3 Specifications

9

Item Detail specifications

Maximum 50 to 400 Hz variable
frequency

Base 25 to 400 Hz variable
frequency

Starting
frequency 0.1 to 60.0 Hz variable, Holding time : 0.0 to 10.0s.

Carrier 0.75 to 15 kHz (The carrier frequency may automatically drop to 0.75 kHz to
frequency protect the inverter. )

Accuracy Analog setting: Within ± 0.2 % (25 ± 10 °C)

Digital setting: Within 0.01% (-10 to +50 °C)

Setting
resolution Analog setting: 1/3000 of maximum output frequency

Keypad panel setting: 0.01 Hz (99.99 Hz or lower), 0.1 Hz (100.0 to 400.0 Hz)
Link setting : «1/20000 of Maximum frequency

(0.003Hz at 60Hz,0.006Hz at 120Hz,0.02Hz at 400Hz)
or 0.01Hz (Fixed)

Voltage/freq. Adjustable at base and maximum frequency,
Characteristics with AVR control : 80 to 240 V(200V class),160 to 480V(400V class)

Torque boost Automatic:Automatic torque boost can be selected with code setting.

Manual: Setting by codes 1 to 31 (Boost for Variable torque available)

Starting torque Starting torque 200% or above

(with dynamic torque vector turned on, during 0.5 Hz operation)

DC braking Braking time (0.0 to 30.0 s), braking current (0 to 100%), braking starting

frequency (0.0 to 60.0 Hz) variable

Control method Sinusoidal PWM (Dynamic torque vector control) with "current vibration

suppression function" and "dead time compensation function"

Operation method Keypad operation: starting and stopping with and keys.

(Keypad panel)
Digital input signal: forward (reverse) operation, stop command (3-wire operation

possible), coast-to-stop command, external alarm, error

reset, etc.

Link operation: RS485 (Standard)

Profibus-DP,Interbus-S,DeviceNet,Modbus Plus,
CAN open (Option)

9-2 Common Specifications

Output frequency

Adjustment

Control

RUN

STOP

9-4

9

Item Detail specifications
Frequency Keypad operation: key and key.

setting

Setting with potentiometer (external potentiometer: 1 to 5 kΩ 1/2 W)
Setting with 0 to ± 5 Vdc.
Setting with 0 to ± 10 Vdc.
Setting with 4 to 20 mAdc.
0 to +10 Vdc / 0 to 100% can be switched to +10 to 0 Vdc / 0 to 100%
externally.
4 to 20 mAdc / 0 to 100% can be switched to 20 to 4 mAdc / 0 to 100%
externally.

(UP/DOWN An external signal can be used to control the UP or DOWN command.
control)

(Multistep Up to 16 different frequencies can be selected by digital input signals.
frequency)

(Link operation) Link operation : RS485 (Standard)

Profibus-DP,Interbus-S,DeviceNet,Modbus Plus, CAN open (Option)

Acceleration / Variable setting in 0.01 to 3600s range. (2 sets of time can be set internally for
deceleration time each of acceleration and deceleration.)
(Mode select) Linear, S-curve (weak,strong), Non-linear available.

Frequency limiter The high and low frequency limits can be set variably in a 0 to 100% range in Hz.
Bias frequency Can be set variably in -400 to 400 Hz range.
Gain Can be set variably in a 0 to 200% range.

(frequency setting)
Jump frequency Three jump frequencies and jump width (0 to 30 Hz) can be set.

control
Rotating motor Operation without shock is possible.

pickup
(Flying start)

Auto-restart after The motor speed can be detected after power recovery so that the motor is
momentary power started at the speed.
failure

Slip compensation The load during regular operation can be detected for the control of the
control frequency. The compensation value can be set variably in a 0.00 to +15.00 Hz

range to the rated frequency.

Droop operation The load during regular operation can be detected for the control of the

frequency. The compensation value can be set in a -9.9 to 0.0 Hz range to the
rated frequency. (Speed droop characteristics)

Torque limiter When the load torque in the driving or braking mode exceeds the setting, the

frequency is controlled to control the load torque to an almost constant level.
The limiting torque can be set 20 to 200% and the driving and braking torque
values can be independently set.
A second set of torque limits can be set.

Control

V

V

Specifications

9-5 Specifications

9

Item Detail specifications
PID control This function can control flowrate, pressure, etc. with analog feedback signal|

The reference and feedback values are displayed in %.

Reference signal

Keypad operation key and key.: 0.0 to 100%
Voltage input (Terminal 12) : 0 to 10Vdc

Current input (Terminal C1) : 4 to 20mAdc
Multistep frequency setting : Setting freq./Max. freq.x100%
RS485 : Setting freq./Max. freq.x100%

Feedback signal

Terminal 12 (0 to +10Vdc or +10 to 0Vdc)
Terminal C1(4 to 20mAdc or 20 to 4mAdc)

Second motor’s The V/f pattern of the second motor can be internally set for selection by means
setting of an external signal.

The constant of the second motor can be internally set for selection by means of
an external signal.

The electronic thermal overload relay of the second motor can be internally set
for selection by means of an external signal.

Energy saving Weak magnetic flux can be set for small loads for operation with an increased
operation motor efficiency.

During The keypad panel can be extended. (Optional 2m extension cable is available.)
operation/stop 7-segment LED display items

• Set frequency • Output frequency • PID setting/feedback value

• Output current • Motor r/min

• Output voltage • Line speed

(A soft filter is provided to attenuate the fluctuation in the displayed value.)

A charge lamp indicates power supply.
When setting The function code and data code are displayed.
When tripping [The cause of tripping is displayed.]

• OC1 (overcurrent: during acceleration)

• OC2 (overcurrent: during deceleration)

• OC3 (overcurrent: during constant speed operation)

• OU1 (overvoltage: during acceleration)

• OU2 (overvoltage: during deceleration)

• OU3 (overvoltage: during constant speed operation)

• LU (undervoltage)

• Lin (input phase loss) (for 3-phase inverter)

• dbH (external damping resistor overheat (thermal overload relay))

• OH1 (overheat: heat sink)

• OH2 (overheat: external thermal overload relay)

• OL1 (overload: motor 1)

• OL2 (overload: motor 2)

• OLU (overload: inverter)

• Er1 (memory error)

• Er2 (keypad panel communication error)

• Er3 (CPU error)

• Er4 (option error)

• Er5 (option error)

• Er7 (output wiring error) (impedance imbalance)

• Er8 (RS485 communication error)

During operation, The latest four records of trip history are stored and displayed.
when tripping

ControlDisplay

V

V

Specifications 9-6

9

Item Detail specifications
Overload Inverter protection electronic thermal overload relay

protection
Overvoltage An excess in the DC link circuit voltage (approx. 400 Vdc for 200V class, approx.

protection 800Vdc for 400V class) is detected for inverter protection.
Overcurrent The inverter is protected against an overcurrent caused by an overload on the

protection output side.
Surge The inverter is protected against a surge voltage penetrating between the power

protection supply cable of the main circuit and the ground.
Undervoltage Voltage drop (approx. 200 Vdc for 200V class, approx. 400Vdc for 400V class)

protection in the DC link circuit voltage is detected to stop the inverter.
Overheat The inverter is protected against failure of the cooling fan.

protection
Short-circuit The inverter is protected against an overcurrent caused by a short-circuit on the

protection output side.
Ground fault The inverter is protected against an overcurrent caused by ground fault in the

protection output wiring.

* Detection when starting

Motor protection Electronic thermal overload relays protect general purpose motors.

The thermal time constant can be adjusted to 0.5 to 10.0 min.
Second electronic thermal overload relay can be provided. (Switching with
external signal)

Braking resistor Upon an overheat of the damping resistor (external unit), discharging operation
protection and inverter operation stop

Stall prevention • When the output current exceeds the limit during acceleration, the frequency
(simple torque limit) ramp

is suspended to avoid overcurrent stop.

• When the output current exceeds the setting during constant speed operation,
the frequency is decreased to maintain an almost constant torque.

• When the DC voltage exceeds the limit during deceleration, the frequency
ramp

is suspended to avoid overvoltage trip.

Input phase loss The inverter is protected against phase loss of the input voltage.
protection

Output phase loss An unbalance in the impedance of the output circuit is detected to output an
protection alarm. (Error during tuning only)

Auto reset The number of retries and wait time can be set for a fault trip.
Installation location

• Indoors

• Places without corrosive gases, flammable gases or dust

(degree of pollution: 2)

• Places without direct sunlight

Ambient -10 to +50 °C
temperature

Relative humidity 5 to 95% RH (without condensation)
Altitude 1000 m Max. (Atmospheric pressure 86 to 106 kPa)
Vibration 3mm 2 to 9 Hz

9.8m/s

2

9 to 20 Hz

2m/s

2

20 to 55 Hz

1m/s

2

55 to 200 Hz

Storage -25 to +65 °C
temperature

Storage humidity 5 to 95% RH (without condensation)

ProtectionEnvironment

9-7 Specifications

9

Type Standard External dimensions (mm)

applicable
motor [kW] D D1 D2 D3

VXSM40-1 0.4 118 107 60 32

9-3 External Dimensions

Specifications 9-8

9

Installation screw size : M4 (4 pcs)

Type Standard External dimensions (mm)

applicable

motor [kW] D D1 D2 D3
VXSM 75-1 0.75 126 115 62.5 40
VXSM 40-3 0.4 126 103 50.5 40
VXSM 75-3 0.75 150 115 62.5 64
VXSM 150-3 1.5 170 159 86.5 64
VXSM 220-3 2.2 170 159 86.5 64

9-9 Specifications

9

Type Standard External dimensions (mm)

applicable

motor [kW] D D1 D2 D3
VXSM 150-1 1.5 158 147 94.5 72
VXSM 220-1 2.2 158 147 94.5 72
VXSM 400-3 4.0 158 147 94.5 72

Specifications 9-10

9

Installation screw :size : M5 (4pcs)

VXSM550-3
VXSM750-3

70

34.32

21.82

12.5

60.5

2-ø3.2
Counter bore ø6.6, depth 4

4.75

4.75

42

27

15

32.54.75

4.75

Front view Side view

RJ45
Connector

RUN

P R G
RESET

STOP

FUNC
DATA

RJ45 Connector

17

53

Clearance hole for RJ45
Connector to be o26

Top view

VXSM Keypad

9-11 Specifications

9

Note) The branched cable length has to be 1m
or less.
Switch in the branched inverter has to be OFF.
(SW2 OFF)

9-4 RS485 Communication

Remove the keypad panel of the inverter
referring to section 1-3 (3) and use the
connector having been connected with the
keypad panel to connect up to 31 inverters in a
line to perform the following operations.

• Frequency setting, forward/reverse rotation,
stop, coast to stop, alarm reset and other
operations

• Monitoring of output frequency, output
current, operation state, alarm description,
and so on

• Setting of function code data (function code
data, command data and monitor data)

The transmission frame is character data having
a fixed length of 16 bytes, so that development
of programs for the host controller is easy. The
operation and frequency setting command
requiring fast speeds can be in a short frame for
shorter communication time. The functions of
the serial communication connector are shown
in Table 9-4-1.

Table 9-4-1 Functions of serial communication connector

Terminal Terminall Name of terminal Specification
No. symbol

4 DX+ RS 485 communication signal Connection of serial communication

(not inverse) signal; compliance with RS485

3 DX- RS485 communication signal (inverse)

Fig. 9-4-1 Equivalent circuit of RS485 interface

The leftmost terminal of the connector when
viewed from the front of the inverter is terminal 1.
Never connect the terminals other than the
above because signal cables used for the
keypad panel are connected. A terminator is
built in the inverter.
Turn SW2 on (left side) below the serial
communication connector for the inverter
connected at the end of the cable to connect the
terminator.
When you communicate more than one inverter,
use a branch adapter in the table 9-4-2 and
connect like Fig 9-4-2.

Fig. 9-4-2 Communication method with more than one inverter

Specifications 9-12

9

Fig. 9-4-3 Command switching block diagram

When X1 through X5 terminals are assigned
with BX, THR and RST functions, the BX, THR
and RST functions are activated even in the
remote mode according to the inputs to the
terminals. RS485 can not make THR ON/OFF.

9-4-1 Connector and Communication

Cable

Use marketed products for the connector, the
communication cable and branch adapter.
Table 9-4-2 shows the specification of each of
them.

Table 9-4-2 Connector and cable specification

9-4-2 Recommended RS-232C/RS485

Converter

For communications with PCs having an
RS232C terminal, the following isolation type
converter is recommended.
Model : IDACS-1520
Manufacture : IMO Precision Controls Ltd

9-4-3 Remote/local changeover

Operation between frequency setting and operation
commands sent via serial communication, and
according to the frequency setting and

Item Specification
Connector RJ45 connector
Cable Cable complying with EIA568 (for 10BASE-T Straight connection)

(Max. wiring length: 500m)

Branch adapter MS8-BA-JJJ (SK KOHKI CO., LTD or equivalent.)

operation commands set in the inverter main
body, can be switched over.
The frequency setting and operation command
selection is made as follows, using function H30
and remote/local switching.
The function of any of the X1 through X5
terminals of the inverter main body is changed
to be the LE terminal which is used for
remote/local switching. Any of the functions E01
through E05 is used to change the function of
X1 to X5 terminal. If X1 through X5 terminals are
not assigned to the LE terminal, it is always in
the remote mode.

9-13 Specifications

9

9-4-4 Communication Protocol

(1) Serial communication specification

Physical level Compliance with EIA RS-485 (2-wire type)
Number of connected Host x 1 unit, inverter x 31 units (Station address 1 to 31)

stations
Transmission speed 19200, 9600, 4800, 2400, 1200[bit/s]
Synchronization method Start-stop
Transmission method Half duplex
Transmission protocol Polling/selecting, broadcast
Character type ASCII 7 bits
Character length Selection between 7 and 8 bits
Transmission distance Max. 500 m
Stop bit Selection between 1 and 2 bits
Frame length Standard frame: fixed to 16 bytes, short frame: 8 or 12 bytes
Parity Selection from none, even and odd
Error check method Checksum, parity, framing error

Table 9-4-3 Serial communication specification

(2) Transmission protocol
It is the half duplex communication in the
polling/selecting method. The inverter always
waits for a write request (selecting) or a read
request (polling) from the host. The inverter,
when receiving in the wait state a request frame
to the own station from the host, returns a
response frame. Upon polling, it returns data
together. In the case of broadcasting (selection
of all stations in a batch), no response is
returned.

• Broadcast

• Polling/selecting

Response internal time+ (0~10ms) 10 msec or longer

Specifications 9-14

9

(3) Transmission procedure

1) Set communication functions H30 through
H39.

2) Make communication according to
transmission frames.

3) If no response returns for one second from
the inverter upon a frame from the host, retry
communication. Several retries indicate
certain errors. Make investigation.

4) If no communication is received from the host
for 30 seconds after the first operation
command is received, the inverter judges a
transmission breakdown error and shuts
down the inverter output, leaving the motor to
coast to stop.

5) After consecutive eight communication
errors, the inverter output is shut down and
the motor coasts to stop.

(4)Host controller transmission procedure
Do not send the next frame unless the response
is returned.
If the inverter does not respond for longer than
the standard time, timeout should be judged and
retry should be performed. If a retry is started

before timeout, normal reception may become
impossible, so that timeout should be judged
correctly. The timeout time is one second in the
selecting mode and 0.5 second in the polling
mode. In the retry sequence, send the same
frame again as that sent before no response, or
send a polling (M26: communication error
monitor) frame for reading an error, and check
for a normal response. (Judge the timeout again
during the check.)
If a normal response is returned, a transient
transmission error due to noise or the like is
indicated, and correct communication can be
continued. If retries occur frequently, any
abnormalities are probable. In-depth
investigation is necessary. If no response is
returned, continue retrying. If there are three
retries, there is some trouble in the hardware or
software of the host controller. Terminate the
software of the host controller and investigate.
No error code is returned in the case of negative
acknowledgment of a short frame. Judge the
error code using the communication error
monitor (M26) separately.

9-15 Specifications

9

9-4-5 Standard Frame

The ASCII code character method is employed.
A standard frame has a fixed length of 16 bytes.
Using optional frames (12 bytes or 8 bytes), the

0 Start-of-heading character (SOH)
1 Tens digit of station address (ASCII)
2 Units digit of station address (ASCII)
3 Enquiry character (ENQ)

4 Command type character (ASCII)

5 Function type character (ASCII)
6 Tens digit of function number (ASCII)
7 Units digit of function number (ASCII)
8 Space (ASCII)
9 First character of data (ASCII)

10 Second character of data (ASCII)

11 Third character of data (ASCII)
12 Fourth character of data (ASCII)
13 End-of-text character (ETX)

14 Upper digit of checksum (ASCII)

15 Lower digit of checksum (ASCII)

Fixed to 01H.
Designate a station address of the destination

inverter with 01 to 31 or 99. (ASCII designation of
each digit)

Fixed to 05H.
E: Reset command, R: Polling (reading), W:

Selecting (writing)
"S", "M", "F", "E", "C", "P", "H" or "A" is designated.

Designate a function number using a two-digit
number. (Designate each digit of 00 to 46 in ASCII.)

Fixed to 20H

The data corresponding to the function is converted
into a 4-digit hexadecimal, and each digit is
designated in ASCII.

Fixed to 03H
From tens digit of the station address to ETX are

added in a binary and the lower two digits of it in
hexadecimal notation are stored in ASCII as a
checksum.

→

→

→

→

→

→

0 Start-of-heading character (SOH)
1 Tens digit of station address (ASCII)
2 Units digit of station address (ASCII)

3 Response character (ACK/NAK)

4 Command type character (ASCII)

5 Function type character (ASCII)
6 Tens digit of function number (ASCII)
7 Units digit of function number (ASCII)
8 Special additional data (ASCII)
9 First character of data (ASCII)

10 Second character of data (ASCII)

11

Third character of data/tens digit of error code (ASCII)

12

Forth character of data/tens digit of error code (ASCII)

13 End-of-text character (ETX)

14 Upper digit of checksum (ASCII)

15 Lower digit of checksum (ASCII)

Fixed to 01H.
Station address of responding inverter (01 to 31)

(ASCII designation of each digit)
06H: Normal responce (ACK), 15H: Faulty response

(NAK)
E: Reset command, R: Polling (reading), W:

Selecting (writing)
"S", "M", "F", "E", "C", "P", "H" or "A" is responded

(the character transmitted by the host is returned).
The function number is designated in a two-digit

number. (The number sent by the host is returned.)
Space (20H) or “-” (2DH)

The data sent by the host is returned in normal
response, or an error code is returned upon an
error.

Fixed to 03H
From tens digit of the station address to ETX are

added in a binary and the lower two digits of it in
hexadecimal notation are stored in ASCII as a
checksum.

→

→

→

→

→

→

transmission speed can be increased.
Note: Numbers with "H" at the end indicate

hexadecimals.

Host→Inverter frame

Inverter→Host frame

7(6) 0

7(6) 0

Specifications 9-16

9

0 Start-of-heading character (SOH)
1 Tens digit of station address (ASCII)
2 Units digit of station address (ASCII)
3 Enquiry character (ENQ)
4 Command type character (ASCII)
5 First character of data (ASCII)
6 Second character of data (ASCII)
7 Third character of data (ASCII)
8 Fourth character of data (ASCII)
9 End-of-text character (ETX)

10 Upper digit of checksum (ASCII)

11 Lower digit of checksum (ASCII)

Fixed to 01H.
Designate a station address of the destination

inverter with 01 to 31 or 99. (designation of each
character in ASCII)

Fixed to 05H.
“a", "e", "f" or "m" is designated.

The data corresponding to the function is converted
into a four-digit hexadecimal, and each digit is
designated in ASCII.

Fixed to 03H
From tens digit of the station address to ETX are

added in a binary and the lower two digits of it in
hexadecimal notation are stored in ASCII as a
checksum.

→

→

→

→

Host→Inverter (selecting)

7(6) 0

0 Start-of-heading character (SOH)
1 Tens digit of station address (ASCII)
2 Units digit of station address (ASCII)
3 Response character (ACK/NAK)
4 Command type character (ASCII)
5 End-of-text character (ETX)
6 Upper digit of checksum (ASCII)
7 Lower digit of checksum (ASCII)

Fixed to 01H.
Station address of responding inverter (01 to 31)

(ASCII designation of each digit)
06H: Normal responce (ACK), 15H: Faulty response

(NAK)
“a", "e", "f" or "m" sent from the host is returned.

Fixed to 03H
From tens digit of the station address to ETX are

added in a binary and the lower two digits of it in
hexadecimal notation are stored in ASCII as a
checksum.

→

→

→

→

Inverter→Host frame (selecting)

7(6) 0

9-4-6 Short Frame

Short frames are prepared for special functions
to reduce the data transmission time.

(1) Selecting

9-17 Specifications

9

0 Start-of-heading character (SOH)
1 Tens digit of station address (ASCII)
2 Units digit of station address (ASCII)
3 Enquiry character (ENQ)
4 Command type character (ASCII)
5 End-of-text character (ETX)
6 Upper digit of checksum (ASCII)
7 Lower digit of checksum (ASCII)

Fixed to 01H.
Designate the station address of the destination

inverter with 01 to 31 or 99. (designation of each
character in ASCII)

Fixed to 05H.
"g", "h", "i", "j" or "k" is designated.
Fixed to 03H

From tens digit of the station address to ETX are
added in a binary and the lower two digits of it in
hexadecimal notation are stored in ASCII as a
checksum.

→

→

→

→

Host→Inverter (polling)

7(6) 0

(2) Polling

0 Start-of-heading character (SOH)
1 Tens digit of station address (ASCII)
2 Units digit of station address (ASCII)
3 Response character (ACK/NAK)
4 Command type character (ASCII)
5 First character of data (ASCII)
6 Second character of data (ASCII)
7 Third character of data (ASCII)
8 Fourth character of data (ASCII)
9 End-of-text character (ETX)

10 Upper digit of checksum (ASCII)

11 Lower digit of checksum (ASCII)

Station address of responding inverter (01 to 31)
(designation of each digit in ASCII)

06H: Normal responce (ACK), 15H: Faulty response
(NAK)

“g", "h", "i", "j" or "k" sent from the host is returned.

The data corresponding to the command is
converted into a four-digit hexadecimal, and each
digit is designated in ASCII.

Fixed to 03H
From tens digit of the station address to ETX are

added in a binary and the lower two digits of it in
hexadecimal notation are stored in ASCII as a
checksum.

→

→

→

→

Inverter→Host frame (polling)

7(6) 0

9-4-7 Details of Frame

(1) Start-of-heading character (ASCII; SOH)

01H in binary.

(2) Tens digit and units digit of station address

Two ASCII characters expressing a decimal
station address between 1 and 31.
Example: Station address 1: Tens digit of
station address: ASCII "0", units digit of
station address: ASCII "1"
Station address 31: Tens digit of station
address: ASCII "3", units digit of station
address: ASCII "1"

(3) Enquiry character (ASCII; ENQ) 05H in

binary.

(4) Response character (ASCII; ACK/NAK)

The inverter sets ACK (06H) to recognize a
request.
NAK (15H) is set when the request from the
host includes a logical error.

(5) Command type character

In a standard frame, set "R" in ASCII for a
polling (reading) request, or set "W" in ASCII
for a selecting (writing) request. Set "E" in
ASCII for a resetting command. Only the
upper case characters are valid.
In a short frame, the function is directly
designated using a command type
character. Refer to (3) Short Frame in
section 9-4-11 Function Code List for details.

(6) Function type character and tens digit and

units digit of function number
A request function is designated in three

Specifications 9-18

9

characters. Refer to section 9-4-11 Function
Code List for details.

(7) Special additional data

This is normally a space (20H). In a
response frame issued by an inverter to
request for frequency monitor (M09), a
minus sign is set in ASCII during reverse
rotation output.

(8) Data

In a selecting (writing) request frame sent
from the host to an inverter, designate
writing data. Refer to section 9-4-10 Data
Type. In a polling (reading) frame, set space
or arbitrary letter or number character. in a
selecting response frame sent from an
inverter to the host, data "0000" or an error
code is contained, and in a polling frame,
data or an error code is contained.

(9) End-of-text character (ASCII; ETX)

03H in binary.

(10)Upper digit and lower digit of checksum

A binary sum of all the characters from tens
digit of the station address to the end-of-text
character is obtained and the lower two
digits of it in hexadecimal notation are
expressed in ASCII codes. Set in the upper
case.
Example. When the binary sum is "17EH"
The upper digit of the checksum is "7" in
ASCII. The lower digit of the checksum is "E"
in ASCII.

9-4-8 Broadcasting

An operation command or frequency
command destined to station address "99" is
received and processed by all the inverters
as broadcasting. However, no response is
issued by the inverters.