Mitsubishi Electronics FR-E740-0.4KSC, FR-E720S-0.1KSC, FR-E720-0.1KSC User Manual

INVERTER

FR-E700

INSTRUCTION MANUAL (BASIC)

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FR-E720-0.1KSC to 15KSC

FR-E740-0.4KSC to 15KSC

FR-E720S-0.1KSC to 2.2KSC

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Thank you for choosing this Mitsubishi Inverter.

This Instruction Manual (Basic) provides handling information and precautions for use of the equipment. Please forward this Instruction Manual (Basic) to the end user.

	CONTENTS
1	OUTLINE ...................................................................................	1
2	INSTALLATION AND WIRING ...................................................	6
3	PRECAUTIONS FOR USE OF THE INVERTER.........................	20
4	FAILSAFE OF THE SYSTEM WHICH USES THE INVERTER ...	22
5	DRIVING THE MOTOR.............................................................	23
6	ENERGY SAVING OPERATION FOR FANS AND PUMPS ........	33
7	PARAMETERS .........................................................................	34
8	TROUBLESHOOTING ..............................................................	39
9	PRECAUTIONS FOR MAINTENANCE AND INSPECTION ........	44
10	SPECIFICATIONS....................................................................	46
	To obtain the Instruction Manual (Applied) and the
	manual
	Safety stop function instruction700

Contact where you purchased the inverter, your Mitsubishi sales representative, or the nearest Mitsubishi FA Center for the following manual:

Instruction Manual (Applied) [IB(NA)-0600277ENG]

Safety stop function instruction manual [BCN-A211508-004]

These manuals are required if you are going to utilize functions and performance.

The PDF versions of these manuals are also available for download at "MELFANS Web," the Mitsubishi Electric FA network service on the world wide web (URL: http://www.MitsubishiElectric.co.jp/melfansweb).

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This Instruction Manual (Basic) provides handling information and precautions for use of the equipment. Please forward this Instruction Manual (Basic) to the end user.

This section is specifically about safety matters

Do not attempt to install, operate, maintain or inspect the inverter until you have read through the Instruction Manual (Basic) and appended documents carefully and can use the equipment correctly. Do not use this product until you have a full knowledge of the equipment, safety information and instructions.

In this Instruction Manual (Basic), the safety instruction levels are classified into "WARNING" and "CAUTION".

WARNING Incorrect handling may cause hazardous conditions, resulting in

death or severe injury.

CAUTION	Incorrect handling may cause
	hazardous conditions, resulting in
	medium or slight injury, or may cause
	only material damage.
The CAUTION	level may even lead to a serious

consequence according to conditions. Both instruction levels must be followed because these are important to personal safety.

1. Electric Shock Prevention

WARNING

While power is ON or when the inverter is running, do not open the front cover. Otherwise you may get an electric shock.

Do not run the inverter with the front cover or wiring cover removed. Otherwise you may access the exposed highvoltage terminals or the charging part of the circuitry and get an electric shock.

Even if power is OFF, do not remove the front cover except for wiring or periodic inspection. You may accidentally touch the charged inverter circuits and get an electric shock.

Before wiring or inspection, power must be switched OFF. To confirm that, LED indication of the operation panel must be checked. (It must be OFF.) Any person who is involved in wiring or inspection shall wait for at least 10 minutes after the power supply has been switched OFF and check that there are no residual voltage using a tester or the like. The capacitor is charged with high voltage for some time after power OFF, and it is dangerous.

This inverter must be earthed (grounded). Earthing (grounding) must conform to the requirements of national and local safety regulations and electrical code (NEC section 250, IEC 536 class 1 and other applicable standards).

A neutral-point earthed (grounded) power supply for 400V class inverter in compliance with EN standard must be used.

Any person who is involved in wiring or inspection of this equipment shall be fully competent to do the work.

The inverter must be installed before wiring. Otherwise you may get an electric shock or be injured.

Setting dial and key operations must be performed with dry hands to prevent an electric shock.

Do not subject the cables to scratches, excessive stress, heavy loads or pinching. Otherwise you may get an electric shock.

Do not change the cooling fan while power is ON. It is dangerous to change the cooling fan while power is ON.

Do not touch the printed circuit board or handle the cables with wet hands. Otherwise you may get an electric shock.

When measuring the main circuit capacitor capacity, the DC voltage is applied to the motor for 1s at powering OFF. Never touch the motor terminal, etc. right after powering OFF to prevent an electric shock.

2. Fire Prevention

CAUTION

Inverter must be installed on a nonflammable wall without holes (so that nobody touches the inverter heatsink on the rear side, etc.). Mounting it to or near flammable material can cause a fire.

If the inverter has become faulty, the inverter power must be switched OFF. A continuous flow of large current could cause a fire.

When using a brake resistor, a sequence that will turn OFF power when a fault signal is output must be configured. Otherwise the brake resistor may overheat due to damage of the brake transistor and possibly cause a fire.

Do not connect a resistor directly to the DC terminals P/+ and N/-. Doing so could cause a fire.

3.Injury Prevention

CAUTION

The voltage applied to each terminal must be the ones specified in the Instruction Manual. Otherwise burst, damage, etc. may occur.

The cables must be connected to the correct terminals. Otherwise burst, damage, etc. may occur.

Polarity must be correct. Otherwise burst, damage, etc. may occur.

While power is ON or for some time after power-OFF, do not touch the inverter as they will be extremely hot. Doing so can cause burns.

4.Additional Instructions

Also the following points must be noted to prevent an accidental failure, injury, electric shock, etc.

(1) Transportation and Mounting

CAUTION

The product must be transported in correct method that corresponds to the weight. Failure to do so may lead to injuries.

Do not stack the boxes containing inverters higher than the number recommended.

The product must be installed to the position where withstands the weight of the product according to the information in the Instruction Manual.

Do not install or operate the inverter if it is damaged or has parts missing.

When carrying the inverter, do not hold it by the front cover or setting dial; it may fall off or fail.

Do not stand or rest heavy objects on the product.

The inverter mounting orientation must be correct.

Foreign conductive objects must be prevented from entering the inverter. That includes screws and metal fragments or other flammable substance such as oil.

As the inverter is a precision instrument, do not drop or subject it to impact.

The inverter must be used under the following environment. Otherwise the inverter may be damaged.

		Surrounding	-10°C to +50°C (non-freezing)
		air
	Environment	temperature
		Ambient	90%RH or less (non-condensing)
		humidity
		Storage	-20°C to +65°C *1
		temperature
		Atmosphere	Indoors (free from corrosive gas, flammable gas,
			oil mist, dust and dirt)
		Altitude/	Maximum 1,000m above sea level.
			5.9m/s2 or less at 10 to 55Hz (directions of X, Y, Z
		vibration	axes)

1 Temperature applicable for a short time, e.g. in transit.

A-1

(2) Wiring

CAUTION

Do not install a power factor correction capacitor or surge suppressor/capacitor type filter on the inverter output side. These devices on the inverter output side may be overheated or burn out.

The connection orientation of the output cables U, V, W to the motor affects the rotation direction of the motor.

(3) Trial run

CAUTION

Before starting operation, each parameter must be confirmed and adjusted. A failure to do so may cause some machines to make unexpected motions.

(4) Usage

WARNING

Any person must stay away from the equipment when the retry function is set as it will restart suddenly after trip.

Since pressing key may not stop output depending on the function setting status, separate circuit and switch that make an emergency stop (power OFF, mechanical brake operation for emergency stop, etc.) must be provided.

OFF status of the start signal must be confirmed before resetting the inverter fault. Resetting inverter alarm with the start signal ON restarts the motor suddenly.

The inverter must be used for three-phase induction motors. Connection of any other electrical equipment to the inverter output may damage the equipment.

Do not modify the equipment.

Do not perform parts removal which is not instructed in this manual. Doing so may lead to fault or damage of the product.

CAUTION

The electronic thermal relay function does not guarantee protection of the motor from overheating. It is recommended to install both an external thermal and PTC thermistor for overheat protection.

Do not use a magnetic contactor on the inverter input for frequent starting/stopping of the inverter. Otherwise the life of the inverter decreases.

The effect of electromagnetic interference must be reduced by using a noise filter or by other means. Otherwise nearby electronic equipment may be affected.

Appropriate measures must be taken to suppress harmonics. Otherwise power supply harmonics from the inverter may heat/damage the power factor correction capacitor and generator.

When driving a 400V class motor by the inverter, the motor must be an insulation-enhanced motor or measures must be taken to suppress surge voltage. Surge voltage attributable to the wiring constants may occur at the motor terminals, deteriorating the insulation of the motor.

When parameter clear or all parameter clear is performed, the required parameters must be set again before starting operations because all parameters return to the initial value.

The inverter can be easily set for high-speed operation. Before changing its setting, the performances of the motor and machine must be fully examined.

Stop status cannot be hold by the inverter's brake function. In addition to the inverter’s brake function, a holding device must be installed to ensure safety.

Before running an inverter which had been stored for a long period, inspection and test operation must be performed.

For prevention of damage due to static electricity, nearby metal must be touched before touching this product to eliminate static electricity from your body.

(5) Emergency stop

CAUTION

A safety backup such as an emergency brake must be provided to prevent hazardous condition to the machine and equipment in case of inverter failure.

When the breaker on the inverter input side trips, the wiring must be checked for fault (short circuit), and internal parts of the inverter for a damage, etc. The cause of the trip must be identified and removed before turning ON the power of the breaker.

When any protective function is activated, appropriate corrective action must be taken, and the inverter must be reset before resuming operation.

(6) Maintenance, inspection and parts replacement

CAUTION

Do not carry out a megger (insulation resistance) test on the control circuit of the inverter. It will cause a failure.

(7) Disposal

CAUTION

 The inverter must be treated as industrial waste.

General instruction

Many of the diagrams and drawings in this Instruction Manual (Basic) show the inverter without a cover or partially open for explanation. Never operate the inverter in this manner. The cover must be always reinstalled and the instruction in this Instruction Manual (Basic) must be followed when operating the inverter.

A-2

<Abbreviation>

PU: Operation panel and parameter unit (FR-PU04, FR-PU07)

Inverter: Mitsubishi inverter FR-E700 series safety stop function model

FR-E700: Mitsubishi inverter FR-E700 series safety stop function model

Pr.: Parameter number (Number assigned to function)

PU operation: Operation using the PU (operation panel/FR-PU04/FR-PU07)

External operation: Operation using the control circuit signals

Combined operation : Operation using the PU (FR-PU04/FR-PU07) and external operation

Standard motor : SF-JR

Constant torque motor : SF-HRCA

<Trademark>

LONWORKS® is a registered trademark of Echelon Corporation in the U.S.A and other countries.

Company and product names herein are the trademarks and registered trademarks of their respective owners.

<Mark>

REMARKS: Additional helpful contents and relations with other functions are written.

Note: Contents requiring caution or cases when set functions are not activated are written.

POINT: Useful contents and points are written.

<Related document>

Refer to the Instruction Manual (Applied) for further information on the following points.

Removal and reinstallation of the cover

Connection of stand-alone option unit

EMC and leakage currents

Detailed explanation on parameters

Troubleshooting

Check first when you have a trouble

Inspection items (life diagnosis, cooling fan replacement)

Measurement of main circuit voltages, currents and powers

For customers who are replacing the conventional model with this inverter

A-3

Product checking and parts identification

1 OUTLINE

1.1Product checking and parts identification

Unpack the inverter and check the capacity plate on the front cover and the rating plate on the inverter side face to ensure that the product agrees with your order and the inverter is intact.

Inverter model

	FR -	E740		-
No.	Voltage class
E720	Three-phase 200V class
E740	Three-phase 400V class
E720S	Single-phase 200V class

Cooling fan

The cooling fan is removable.

Operation panel

3.7 K SC

											1
Represents the							Symbol		Control circuit terminal specification
								SC	Safety stop function model
inverter capacity [kW]

Control logic switchover jumper connector

The jumper connector is in the sink logic (SINK) when shipped from the factory. Move the jumper connector to change to the source logic (SOURCE). Always fit the jumper connector to the either position.

(Refer to page 2)

PU connector

(Refer to page 9)

Voltage/current input switch

(Refer to page 9)

USB connector cover

Refer to the Instruction Manual (Applied) for how to open the cover.

Front cover

Refer to the Instruction Manual (Applied) for installation/removal.

PU connector cover

Refer to the Instruction Manual (Applied) for how to open the cover.

( Refer to the Instruction Manual (Applied))

USB connector (mini-B connector)

(Refer to page 9)

Connector for plug-in option connection

(Refer to the instruction manual of options.)

Control circuit terminal block

(Refer to page 10)

Main circuit terminal block

(Refer to page 10)

Combed shaped wiring cover

Refer to the Instruction Manual (Applied) for installation/removal.

Capacity plate

FR-E740-3.7KSC Inverter model

Serial number

Example of FR-E740-3.7KSC
Rating plate
Inverter model	FR-E740-3.7KSC
Input rating
Output rating
Serial number

Accessory

·Fan cover fixing screws (M3 35mm)

These screws are necessary for compliance with the EU Directive (Refer to page 49)

Capacity	Quantity
FR-E720-1.5KSC to 3.7KSC, FR-E740-1.5KSC to 3.7KSC, FR-E720S-0.75KSC to 2.2KSC	1
FR-E720-5.5KSC to 15KSC, FR-E740-5.5KSC to 15KSC	2

Harmonic suppression guideline (when inverters are used in Japan)

All models of general-purpose inverters used by specific consumers are covered by "Harmonic suppression guideline for consumers who receive high voltage or special high voltage". (For further details, refer to Chapter 3 of the Instruction Manual (Applied).)

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Operation panel

1.2Operation panel

1.2.1Names and functions of the operation panel

The operation panel cannot be removed from the inverter.

Operation mode indicator

PU: Lit to indicate PU operation mode. EXT: Lit to indicate External operation mode.

(Lit at power-ON at initial setting.) NET: Lit to indicate Network operation

mode.

PU, EXT: Lit to indicate External/PU combined operation mode 1, 2.

These turn OFF when command source is not on operation panel.

Unit indicator

Hz: Lit to indicate frequency. (Flickers when the set frequency monitor is displayed.)

A: Lit to indicate current.

(Both "Hz" and "A" turn OFF when other than the above is displayed.)

Monitor (4-digit LED)

Shows the frequency, parameter number, etc.

Setting dial

(Setting dial: Mitsubishi inverter dial) Used to change the frequency setting and parameter settings.

Press to display the following.

Displays the set frequency in the monitor mode

Present set value is displayed during calibration

Displays the order in the faults history mode

Mode switchover

Used to change each setting mode. Pressing simultaneously changes

the operation mode.

Pressing for a while (2s) can lock operation. ( Refer to the Instruction Manual (Applied))

Determination of each setting

If pressed during operation, monitor changes as below:

Running frequency

Operating status indicator

Lit or flicker during inverter operation.

* Lit: When the forward rotation operation is being performed.

Slow flickering (1.4s cycle):

When the reverse operation is being performed.

Fast flickering (0.2s cycle):

When was pressed or the

start command was given, but the operation cannot be made.

When the frequency command is less than the starting frequency.

When the MRS signal is input.

Parameter setting mode

Lit to indicate parameter setting mode.

Monitor indicator

Lit to indicate monitoring mode.

Stop operation

Used to stop Run command. Fault can be reset when protective function is activated (fault).

Operation mode switchover

Used to switch between the PU and External operation mode.

When using the External operation mode (operation using a separately connected frequency setting potentiometer and start signal), press this key to light up the EXT indication.

(Press simultaneously (0.5s) or

change Pr. 79 setting to change to combined mode .) ( Refer to the Instruction Manual (Applied))

PU: PU operation mode EXT: External operation mode Cancels PU stop also.

Start command

The rotation direction can be selected by setting Pr. 40.

Output current

Output voltage

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Operation panel

1.2.2Basic operation (factory setting)

Monitor/frequency setting

Operation mode switchover

At power-ON (External operation mode)

		PU Jog operation mode	1
			(Example)
	PU operation mode	Value change	and frequency flicker.
	(output frequency monitor)
			Frequency setting has been
			written and completed!!
		Output current monitor STOP	Output voltage monitor

Parameter setting

Faults history

Parameter setting mode (Refer to page 4)		Display the
		present setting
		(Example)
Value change		Parameter and a setting value
		flicker alternately.
		Parameter write is completed!!
Parameter clear	All parameter	Faults history clear
	clear

Initial value change list

[Operation for displaying faults history] (Refer to page 40)

Past eight faults can be displayed. (The latest fault is ended by ".".)

When no fault history exists, is displayed.

While a fault is displayed:

The display shifts as follows by pressing : Output frequency at the fault Output currentOutput voltageEnergization time.

(After Energization time, it goes back to a fault display.)

Pressing the setting dial shows the fault history number.

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Operation panel

1.2.3Changing the parameter setting value

	Changing	Change the Pr. 1 Maximum frequency setting.
	example

	Operation		Display
1. Screen at power-ON
The monitor display appears.
2. Press	to choose the PU operation mode.		PU indicator is lit.
3. Press	to choose the parameter setting		PRM indicator is lit.
mode.			(The parameter number read previously appears.)
4. Turn	until	(Pr. 1) appears.

5. Press to read the currently set value. " "(120.0Hz (initial value)) appears.

6. Turn to change the set value to " " (60.00Hz).

7. Press to set.

Flicker...Parameter setting complete!!

Turn to read another parameter.

Press to show the setting again.

Press twice to show the next parameter.

Press twice to return the monitor to frequency monitor.

REMARKS

	to		...is displayed Why?
	appears ....................		Write disable error
	appears ....................		Write error during operation
	appears ....................		Calibration error
	appears ....................		Mode designation error

(For details, Refer to the Instruction Manual (Applied).)

The number of digits displayed on the operation panel is four. Only the upper four digits of values can be displayed and set. If the values to be displayed have five digits or more including decimal places, the fifth or later numerals can not be displayed nor set. (Example) For Pr. 1

When 60Hz is set, 60.00 is displayed.

When 120Hz is set, 120.0 is displayed and second decimal place is not displayed nor set.

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Operation panel

1.2.4Parameter clear/all parameter clear

POINT

 Set "1" in Pr.CL Parameter clear, ALLC all parameter clear to initialize all parameters. (Parameters are not cleared when "1" is set in Pr. 77 Parameter write selection.)

Refer to the extended parameter list of the Instruction Manual (Applied) for parameters cleared with this operation.

	Operation			Display
1. Screen at power-ON				1
The monitor display appears.
2. Press	to choose the PU operation mode.			PU indicator is lit.
3. Press	to choose the parameter setting			PRM indicator is lit.
mode.				(The parameter number read previously appears.)
4. Turn	until	(	) appears.	Parameter clear
				All parameter clear

5. Press to read the currently set value. " "(initial value) appears.

6. Turn to change it to the set value " ".

7. Press	to set.	Parameter clear
		All parameter clear

Flicker ··· Parameter setting complete!!

Turn to read another parameter.

Press to show the setting again.

Press twice to show the next parameter.

Setting

Description

0Not executed.

Sets parameters back to the initial values. (Parameter clear sets back all parameters except

1

calibration parameters and terminal function selection parameters to the initial values.) Refer to the parameter list of the Instruction Manual (Applied) for availability of parameter clear and all parameter clear.

REMARKS

and are displayed alternately ... Why?

The inverter is not in the PU operation mode.

PU connector or USB connector is used.

1.Press . [PU] is lit and the monitor (4-digit LED) displays "1". (When Pr. 79 = "0" (initial value))

2.Carry out operation from step 6 again.

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2 INSTALLATION AND WIRING

AC power supply
Use within the permissible power supply							USB connector
specifications of the inverter. To ensure							A personal computer and an inverter
safety, use a moulded case circuit breaker,
							can be connected with a
earth leakage circuit breaker or magnetic
					Enclosure surface operation panel		USB (Ver1. 1) cable.
contactor to switch power ON/OFF.
(Refer to page 46)					(FR-PA07)		(	Refer to Chapter 4 of the
Moulded case circuit breaker					By connecting the connection cable (FR-		Instruction Manual (Applied))
(MCCB) or earth leakage circuit					CB2) to the PU connector, operation can
					be performed from FR-PU07, FR-PA07.
breaker (ELB), fuse			Parameter unit
The breaker must be selected carefully			(FR-PU07)
since an in-rush current flows in the
inverter at power ON.
(Refer to page 7)
Magnetic contactor (MC)
Install the magnetic contactor to ensure
safety. Do not use this magnetic contactor
to start and stop the inverter. Doing so will
cause the inverter life to be shorten.								Approved safety
(Refer to page 7)
								relay module
Reactor (FR-HAL, FR-HEL option)						S1		Required for
Reactors (option) must be used when						S2		compliance with
power harmonics measures are taken,						SC		safety standard.
the power factor is to be improved or the
inverter is installed near a large power
supply system (500kVA or more). The
inverter may be damaged if you do not
use reactors. Select the reactor according
to the model. Remove the jumpers across								Brake resistor
terminals P/+ and P1 to connect the DC reactor.
								(FR-ABR, MRS type, MYS type)
AC reactor (FR-HAL)	DC reactor (FR-HEL) *							Braking capability can be improved. (0.4K
								or higher)
								Always install a thermal relay when using
								a brake resistor whose capacity is 11K or
								higher. (Refer to page 19)
						P/+
	EMC filter (ferrite core) *	P/+P1		Inverter (FR-E700)		PR
	(FR-BSF01, FR-BLF)							EMC filter (ferrite core)
					R/L1 S/L2 T/L3
	Install an EMC filter (ferrite core)							(FR-BSF01, FR-BLF)
	to reduce the electromagnetic		EMC filter		Earth (Ground)			Install an EMC filter (ferrite core)
	noise generated from the							to reduce the electromagnetic
			(capacitor) *		P/+ N/-	U V W
	inverter. Effective in the range
								noise generated from the inverter.
			(FR-BIF)
	from about 1MHz to 10MHz.
								Effective in the range from about
	When more wires are passed		Reduces the
								1MHz to 10MHz. A wire should be
	through, a more effective result		radio noise.
								wound four turns at a maximum.
	can be obtained. A wire should
	be wound four turns or more.
* Filterpack (FR-BFP2), which contains DC reactor and EMC filter in one package, is also available.
				Brake unit
				(FR-BU2)

		P/+ PR
		P/+
High power factor	Power regeneration	PR
		Resistor unit (FR-BR)
converter (FR-HC)	common converter	Discharging resistor (GZG, GRZG)
	(FR-CV)
Power supply harmonics	Great braking capability	The regenerative braking capability
can be greatly suppressed.	is obtained.	of the inverter can be exhibited fully.
Install this as required.	Install this as required.	Install this as required.

Devices connected to the output	Earth (Ground)
Do not install a power factor correction capacitor,

surge suppressor or capacitor type filter on the output side of the inverter. When installing a moulded case circuit breaker on the output side of the inverter, contact each manufacturer for selection of the moulded case circuit breaker.

Earth (Ground)

To prevent an electric shock, always earth (ground) the motor and inverter. For reduction of induction noise from the power line of the inverter, it is recommended to wire the earthing cable by returning it to the earth (ground) terminal of the inverter.

NOTE

The life of the inverter is influenced by surrounding air temperature. The surrounding air temperature should be as low as possible within the permissible range. This must be noted especially when the inverter is installed in an enclosure. (Refer to page 8)

Wrong wiring might lead to damage of the inverter. The control signal lines must be kept fully away from the main circuit to protect them from noise. (Refer to page 9)

Do not install a power factor correction capacitor, surge suppressor or capacitor type filter on the inverter output side. This will cause the inverter to trip or the capacitor and surge suppressor to be damaged. If any of the above devices are connected, immediately remove them.

Electromagnetic wave interference

The input/output (main circuit) of the inverter includes high frequency components, which may interfere with the communication devices (such as AM radios) used near the inverter. In this case, install options among the capacitor type EMC filter FR-BIF (for use in the input side only), the ferrite core type EMC filter FR-BSF01/FR-BLF, filterpack, and EMC filter to minimize the interference. ( Refer to Chapter 3 of the Instruction Manual (Applied)).

Refer to the instruction manual of each option and peripheral devices for details of peripheral devices.

6

Peripheral devices

2.1Peripheral devices

Check the inverter model of the inverter you purchased. Appropriate peripheral devices must be selected according to the capacity. Refer to the following list and prepare appropriate peripheral devices.

Single-Phase 200V Three-Phase 400V Three-Phase 200V

Moulded Case Circuit Breaker

Magnetic Contactor (MC)

Motor

(MCCB)

Reactor

Applicable Inverter

or Earth Leakage Circuit Breaker

Output

Model

(ELB)

(kW)

Reactor connection

Reactor connection

FR-HAL

FR-HEL

without

with

without

with

FR-E720-0.1KSC

0.1

5A

5A

S-N10

S-N10

0.4K

0.4K

FR-E720-0.2KSC

0.2

5A

5A

S-N10

S-N10

0.4K

0.4K

FR-E720-0.4KSC

0.4

5A

5A

S-N10

S-N10

0.4K

0.4K

FR-E720-0.75KSC

0.75

10A

10A

S-N10

S-N10

0.75K

0.75K

FR-E720-1.5KSC

1.5

15A

15A

S-N10

S-N10

1.5K

1.5K

FR-E720-2.2KSC

2.2

20A

15A

S-N10

S-N10

2.2K

2.2K

2

FR-E720-3.7KSC

3.7

30A

30A

S-N20, S-N21

S-N10

3.7K

3.7K

FR-E720-5.5KSC

5.5

50A

40A

S-N25

S-N20, S-N21

5.5K

5.5K

FR-E720-7.5KSC

7.5

60A

50A

S-N25

S-N25

7.5K

7.5K

FR-E720-11KSC

11

75A

75A

S-N35

S-N35

11K

11K

FR-E720-15KSC

15

125A

100A

S-N50

S-N50

15K

15K

FR-E740-0.4KSC

0.4

5A

5A

S-N10

S-N10

H0.4K

H0.4K

FR-E740-0.75KSC

0.75

5A

5A

S-N10

S-N10

H0.75K

H0.75K

FR-E740-1.5KSC

1.5

10A

10A

S-N10

S-N10

H1.5K

H1.5K

FR-E740-2.2KSC

2.2

15A

10A

S-N10

S-N10

H2.2K

H2.2K

FR-E740-3.7KSC

3.7

20A

15A

S-N10

S-N10

H3.7K

H3.7K

FR-E740-5.5KSC

5.5

30A

20A

S-N20, S-N21

S-N11, S-N12

H5.5K

H5.5K

FR-E740-7.5KSC

7.5

30A

30A

S-N20, S-N21

S-N20, S-N21

H7.5K

H7.5K

FR-E740-11KSC

11

50A

40A

S-N20, S-N21

S-N20, S-N21

H11K

H11K

FR-E740-15KSC

15

60A

50A

S-N25

S-N20, S-N21

H15K

H15K

FR-E720S-0.1KSC

0.1

5A

5A

S-N10

S-N10

0.4K

0.4K

FR-E720S-0.2KSC

0.2

5A

5A

S-N10

S-N10

0.4K

0.4K

FR-E720S-0.4KSC

0.4

10A

10A

S-N10

S-N10

0.75K

0.75K

FR-E720S-0.75KSC

0.75

15A

10A

S-N10

S-N10

1.5K

1.5K

FR-E720S-1.5KSC

1.5

20A

20A

S-N10

S-N10

2.2K

2.2K

FR-E720S-2.2KSC

2.2

40A

30A

S-N20, S-N21

S-N10

3.7K

3.7K

Select an MCCB according to the power supply capacity.

Install one MCCB per inverter.

MCCB

INV

IM

MCCB

INV

IM

For the use in the United States or Canada, select a UL and cUL certified fuse with Class T fuse equivalent cut-off

speed or faster with the appropriate rating for branch circuit protection. Alternatively, select a UL489 molded case circuit breaker (MCCB). (Refer to page 52) Magnetic contactor is selected based on the AC-1 class. The electrical durability of magnetic contactor is 500,000 times. When the magnetic contactor is used for emergency stop during motor driving, the electrical durability is 25 times.

When using the MC for emergency stop during motor driving or using on the motor side during commercial-power supply operation, select the MC with class AC-3 rated current for the motor rated current.

The power factor may be slightly lower.

NOTE

When the inverter capacity is larger than the motor capacity, select an MCCB and a magnetic contactor according to the inverter model and cable and reactor according to the motor output.

When the breaker on the inverter input side trips, check for the wiring fault (short circuit), damage to internal parts of the inverter, etc. Identify the cause of the trip, then remove the cause and power ON the breaker.

7

Installation of the inverter and instructions

2.2Installation of the inverter and instructions

(1)Installation of the inverter

Enclosure surface mounting

Remove the front cover and wiring cover to fix the inverter to the surface. (Remove the covers in the directions of the arrows.)

FR-E720-0.1KSC to 0.75KSC	FR-E720-1.5KSC to 3.7KSC		FR-E720-5.5KSC to 15KSC
FR-E720S-0.1KSC to 0.4KSC	FR-E740-0.4KSC to 7.5KSC		FR-E740-11KSC, 15KSC
	FR-E720S-0.75KSC or higher
Front cover
	Front cover
		Front cover 1
Wiring cover		Wiring cover	Wiring cover

Note

When encasing multiple inverters, install them in parallel as a cooling measure.

Install the inverter vertically.

For heat dissipation and maintenance, take at least the clearances shown in the table below from the inverter to the other devices and to the enclosure surface.

		Measurement		10cm or more
		position
	5cm	5cm
			1cm or	1cm or	1cm or
		5cm	more 1, 2	more 1, 2
	Measurement				more 1

position

10cm or more

Refer
to the
	clearancesthe
show	n on	left.

Vertical

-10 C to 50 C (non-freezing)

Take 5cm or more clearances for 5.5K or higher.

When using the inverters at the surrounding air temperature of 40 C or less, the inverters can be installed without any clearance between them (0cm clearance).

(2)Environment

Before installation, check that the environment meets the specifications on page 47.

Note

Install the inverter on a strong surface securely and vertically with bolts.

Leave enough clearances and take cooling measures.

Avoid places where the inverter is subjected to direct sunlight, high temperature and high humidity.

Install the inverter on a nonflammable wall surface.

8

Wiring

2.3Wiring

2.3.1Terminal connection diagram

Sink logic
Main circuit terminal	*1. DC reactor (FR-HEL)
Control circuit terminal	When connecting a DC reactor, remove the

jumper across P1 and P/+.

Single-phase power input

	MCCB	MC
	Single-phase	R/L1
	AC power	S/L2
	supply

MCCB MC

Three-phase AC power supply

Earth (Ground)

Brake unit (Option)

*1

R

	Earth	*7
	(Ground)

Jumper		PR	N/-
P1	P/+	*6

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

Main circuit

Control circuit

*6 A brake transistor is not built-in to the 0.1K and 0.2K.

*7 Brake resistor (FR-ABR, MRS, MYS type) Install a thermal relay to prevent an overheat and burnout of the brake resistor. (The brake resistor can not be connected to the 0.1K and 0.2K.)

Motor

IM

2

Earth (Ground)

Safety stop function model

Control input signals (No voltage input allowed)

	Terminal functions vary	Forward
		rotation start
	with the input terminal	Reverse
	assignment (Pr. 178 to
		rotation start
	Pr. 182 and Pr. 184)
			High
			speed
	Multi-speed selection Middle
			speed
	*2 When using terminals PC-		Low
	SD as a 24VDC power
			speed
	supply, take care not to
	short across terminals		Reset
	PC-SD.

Contact input common

24VDC power supply

(Common for external power supply transistor) Safety stop input common terminal

Safety stop input (Channel 1)

Safety stop input (Channel 2)

Shorting wire

STF

STR

RH

RM

RL

SD	SOURCE	SINK
RES

PC *2

S1

S2

Frequency setting signals (Analog)

Frequency

3

10(+5V)

*3 Terminal input specifications

can be changed by analog

setting

input specifications

2

2

0 to 5VDC

*3

potentiometer

(0 to 10VDC)

switchover (Pr. 73).

1/2W1kΩ

*4

*4 It is recommended to use 2W1kΩ

1

5(Analog common)

when the frequency setting signal

is changed frequently.

Terminal 4 input (+)

4

4 to 20mADC

(Current input) (-)

0 to 5VDC

*5

*5 Terminal input specifications can be changed by analog

0 to 10VDC

input specifications switchover (Pr. 267). Set the

voltage/current input switch in the "V" position to select

voltage input (0 to 5V/0 to10V) and "I" (initial value) to

V

I

select current input (4 to 20mA).

To use terminal 4 (initial setting is current input), set "4"

Voltage/current

in any of Pr.178 to Pr.184 (input terminal function selection)

input switch *5

to assign the function, and turn ON AU signal.

Connector for

Option connector

plug-in option connection

	C			Relay output
	B			Terminal functions vary
		Relay output		by Pr. 192 A,B,C terminal
		(Fault output)		function selection
	A
				Open collector output
	RUN		Terminal functions vary with
		Running	the output terminal assignment
			(Pr. 190 and Pr. 191)
	FU
		Frequency detection
	SE	Open collector output common
		Sink/source common

Calibration resistor

Indicator

+- (Frequency meter, etc.)

FM		Moving-coil type
		1mA full-scale
	*8
SD
	*8	It is not necessary when calibrating the
PU		indicator from the operation panel.
connector	*9	Operation and parameter setting can be
*9		done from the parameter unit (FR-PU07)
		and the enclosure surface operation panel
		(FR-PA07).
		(Use the option cable (FR-CB2 ).)
		RS-485 communication can be utilized from
		a personal computer and other devices.
USB	*10	A personal computer and an inverter can be
		connected with a USB (Ver1.1) cable.
connector

*10

NOTE

To prevent a malfunction caused by noise, separate the signal cables more than 10cm from the power cables. Also separate the main circuit wire of the input side and the output side.

After wiring, wire offcuts must not be left in the inverter.

Wire offcuts can cause an alarm, failure or malfunction. Always keep the inverter clean. When drilling mounting holes in an enclosure etc., take care not to allow chips and other foreign matter to enter the inverter.

The output of the single-phase power input model is three-phase 200V.

9

Wiring

2.3.2Terminal specifications

Type		Terminal				Terminal Name	Description
		Symbol
		R/L1, S/L2,				AC power input	Connect to the commercial power supply. Keep these terminals open when using the high
							power factor converter (FR-HC) or power regeneration common converter (FR-CV).
		T/L3 *
							When using single-phase power input, terminals are R/L1 and S/L2.
		U, V, W				Inverter output	Connect a three-phase squirrel-cage motor.
circuit		P/+, PR				Brake resistor connection	Connect a brake resistor (MRS type, MYS type, FR-ABR) across terminals P/+ and PR.
							(The brake resistor can not be connected to the 0.1K or 0.2K)
Main						Brake unit connection	Connect the brake unit (FR-BU2), power regeneration common converter (FR-CV) or high
		P/+, N/-					power factor converter (FR-HC).
						DC power input	Connect the plus side of the power supply to terminal P/+ and minus side to terminal N/-.
		P/+, P1				DC reactor connection	Remove the jumper across terminals P/+ and P1 and connect a DC reactor.
						Earth (Ground)	For earthing (grounding) the inverter chassis. Must be earthed (grounded).
		STF				Forward rotation start	Turn ON the STF signal to start forward rotation and turn it OFF	When the STF and STR
							to stop.	signals are turned ON
		STR				Reverse rotation start	Turn ON the STR signal to start reverse rotation and turn it OFF	simultaneously, the stop
							to stop.	command is given.
		RH, RM, RL				Multi-speed selection	Multi-speed can be selected according to the combination of RH, RM and RL signals.
		RES				Reset	Used to reset alarm output provided when protective circuit is activated. Turn ON the RES
							signal for more than 0.1s, then turn it OFF. Initial setting is for reset always. By setting Pr. 75,
							reset can be set to enabled only at fault occurrence. Recover about 1s after reset is cancelled.
						Contact input common	Common terminal for contact input terminal (sink logic) and terminal FM.
	input					(sink) (initial setting)
						External transistor	Connect this terminal to the power supply common terminal of a transistor output (open
signalcircuit/input Contact			SD				collector output) device, such as a programmable controller, in the source logic to avoid
						common (source)
							malfunction by undesirable current.
						24VDC power supply	Common output terminal for 24VDC 0.1A power supply (PC terminal).
						common	Isolated from terminals 5 and SE.
						External transistor	Connect this terminal to the power supply common terminal of a transistor output (open
						common	collector output) device, such as a programmable controller, in the sink logic to avoid
Control						(sink) (initial setting)	malfunction by undesirable current.
			PC			Contact input common	Common terminal for contact input terminal (source logic).
						(source)
						24VDC power supply	Can be used as 24VDC 0.1A power supply.
						Safety stop input terminal	Common terminal for safety stop input terminals S1 and S2.
						common
*							S1/S2 are safety stop signals for use with in conjunction with
	function		S1			Safety stop input	an approved external safety unit. Both S1/S2 must be used in	Input resistance 4.7k
								open
						(Channel 1)	dual channel form. Inverter output is shutoff depending on	Voltage when contacts are
							shorting/opening between S1 and PC, S2 and PC.	21 to 26VDC
	stop						In the initial status, terminal S1 and S2 are shorted with
								When contacts are short-
	Safety		S2			Safety stop input	terminal PC by shorting wire.	circuited
						(Channel 2)	when using the safety stop function.	4 to 6mADC
							Remove the shorting wire and connect the safety relay module

For more details, refer to the Safety stop function instruction manual (BCN-A211508-004). (Refer to the front cover for how to obtain the manual.)

10

Wiring

Type

Terminal

Terminal Name

Description

Symbol

10

Frequency setting power

Used as power supply when connecting potentiometer for

5VDC

supply

frequency setting (speed setting) from outside of the inverter.

permissible load current 10mA

Frequency setting

Inputting 0 to 5VDC (or 0 to 10V) provides the maximum output

Input resistance 10k ± 1k

2

frequency at 5V (10V) and makes input and output

Permissible maximum voltage

(voltage)

proportional. Use Pr. 73 to switch between input 0 to 5VDC

20VDC

(initial setting) and 0 to 10VDC input.

circuit/inputControlsignal

Inputting 0 to 20mADC (or 0 to 5V / 0 to 10V) provides the

settingFrequency

maximum output frequency at 20mA and makes input and

output proportional. This input signal is valid only when the AU

Maximum permissible current

signal is ON (terminal 2 input is invalid). To use terminal 4

Voltage input:

(initial setting is current input), set "4" to any of Pr.178 to Pr.184

Input resistance 10k ± 1k

Frequency setting

(input terminal function selection), and turn AU signal ON. Use

Permissible maximum voltage

4

Pr. 267 to switch among input 4 to 20mA (initial setting), 0 to

20VDC

(current)

5VDC, and 0 to 10VDC. Set the voltage/current input switch in

Current input:

the "V" position to select voltage input (0 to 5V/0 to 10V).

Input resistance 233 ± 5

Current input

30mA.

(initial status) Voltage input

2

5

Frequency setting

Common terminal for the frequency setting signals (terminals 2 and 4). Do not earth (ground).

common

Relay

Relay output

1 changeover contact output indicates that the inverter fault occurs.

A, B, C

Fault: discontinuity across B and C (continuity across A and C),

(fault output)

Normal: continuity across B and C (discontinuity across A and C)

Contact capacity 230VAC 0.3A (power factor = 0.4) 30VDC 0.3A

signal

RUN

Inverter running

Switched Low when the inverter output frequency is equal to or

Permissible load 24VDC

Switched High during stop or DC injection brake operation.

(a voltage drop is 3.4V

higher than the starting frequency (initial value 0.5Hz).

(Maximum 27VDC) 0.1A

circuit/outputControl

collectorOpen

maximum when the signal is

SE

Open collector

Common terminal of terminal RUN and FU.

ON)

Switched Low when the inverter output frequency is equal to or

FU

Frequency detection

Low is when the open

higher than the preset detected frequency and High when less

collector output transistor is

than the preset detected frequency.

ON (conducts). High is when

the transistor is OFF (does

not conduct).

output common

Pulse

Used to output a selected monitored item (such as Output

Permissible load current 1mA

FM

For meter

frequency) among several monitored items. (Not output during

inverter reset.) The output signal is proportional to the

1440 pulses/s at 60Hz

magnitude of the corresponding monitoring item.

Communication

—

PU connector

With the PU connector, RS-485 communication can be established.

· Connector: USB mini B connector (receptacle mini B type)

· Conforming standard: EIA-485 (RS-485)

· Transmission format: Multi-drop link

· Communication speed: 4800 to 38400bps

· Overall extension: 500m

—

USB connector

A personal computer and an inverter can be connected with a USB (Ver1.1) cable.

· Interface: conforms to USB1.1

· Transmission Speed: 12Mbps

Note

Set Pr. 267 and a voltage/current input switch correctly, then input an analog signal in accordance with the setting. Applying a voltage with voltage/current input switch in "I" position (current input is selected) or a current with switch in "V" position (voltage input is selected) could cause component damage of the inverter or analog circuit of output devices.

The inverter will be damaged if power is applied to the inverter output terminals (U, V, W). Never perform such wiring.

 indicates that terminal functions can be selected using Pr. 178 to Pr. 182, Pr. 184 and Pr. 190 to Pr. 192 (I/O terminal function selection).

Terminal names and terminal functions are those of the factory set.

When connecting the DC power supply, be sure to connect the plus side of the power supply to terminal P/+ and minus side to terminal N/-. Opposite polarity will damage the inverter.

11

Wiring

2.3.3Terminal arrangement of the main circuit terminal, power supply and the motor wiring

Three-phase 200V/400V class

FR-E720-0.1KSC to 0.75KSC	FR-E720-1.5KSC to 3.7KSC
	FR-E740-0.4KSC to 3.7KSC

			Jumper	N/- P/+
N/-	P/+	PR		Jumper
				R/L1 S/L2 T/L3

R/L1 S/L2 T/L3

PR

	IM		IM
Power supply	Motor	Power supply	Motor

FR-E720-5.5KSC, 7.5KSC

FR-E740-5.5KSC, 7.5KSC

R/L1S/L2T/L3

R/L1 S/L2	T/L3
Jumper

N/-	P/+	PR	N/-	P/+ PR

	Jumper
	IM
	Power supply Motor
	IM
Power supply	Motor
FR-E720-11KSC, 15KSC	FR-E740-11KSC, 15KSC

		N/-	P/+	PR	R/L1 S/L2 T/L3
R/L1 S/L2 T/L3 N/-	P/+	PR

Jumper

Jumper	IM
Power supply	Motor

IM

Power supply

Motor

Single-phase 200V class

FR-E720S-0.1KSC to 0.4KSC

Jumper

N/-

P/+

PR

R/L1 S/L2

	IM
Power supply	Motor

FR-E720S-0.75KSC to 2.2KSC

N/-P/+

Jumper

R/L1 S/L2

PR

IM

Power supply

Motor

NOTE

Make sure the power cables are connected to the R/L1, S/L2, and T/L3. (Phase need not be matched.) Never connect the power cables to the U, V, and W of the inverter. Doing so will damage the inverter.

Connect the motor to U, V, and W. Turning ON the forward rotation switch (signal) at this time rotates the motor counterclockwise when viewed from the load shaft.

12

Wiring

(1)Cable size and other specifications of the main circuit terminals and the earthing terminal

Select the recommended cable size to ensure that a voltage drop will be 2% or less.

If the wiring distance is long between the inverter and motor, a main circuit cable voltage drop will cause the motor torque to decrease especially at the output of a low frequency.

The following table indicates a selection example for the wiring length of 20m.

Three-phase 200V class (when input power supply is 220V)

			Crimping					Cable Size
Applicable Inverter	Terminal	Tightening	Terminal		HIV Cables, etc. (mm2)			AWG		PVC Cables, etc. (mm2)
	Screw	Torque
Model	Size	N·m	R/L1	U, V, W	R/L1	U, V, W	Earthing	R/L1	U, V, W	R/L1	U, V, W	Earthing
			S/L2		S/L2		cable	S/L2		S/L2		cable
			T/L3		T/L3			T/L3		T/L3
FR-E720-0.1KSC to 0.75KSC	M3.5	1.2	2-3.5	2-3.5	2	2	2	14	14	2.5	2.5	2.5
FR-E720-1.5KSC, 2.2KSC	M4	1.5	2-4	2-4	2	2	2	14	14	2.5	2.5	2.5
FR-E720-3.7KSC	M4	1.5	5.5-4	5.5-4	3.5	3.5	3.5	12	12	4	4	4
FR-E720-5.5KSC	M5	2.5	5.5-5	5.5-5	5.5	5.5	5.5	10	10	6	6	6		2
FR-E720-7.5KSC	M5	2.5	14-5	8-5	14	8	5.5	6	8	16	10	6
FR-E720-11KSC	M5	2.5	14-5	14-5	14	14	14	6	6	16	16	16
FR-E720-15KSC	M6(M5)	4.4	22-6	22-6	22	22	14	4	4	25	25	16

Three-phase 400V class (when input power supply is 440V)

			Crimping					Cable Size
Applicable Inverter	Terminal	Tightening	Terminal		HIV Cables, etc. (mm2)			AWG		PVC Cables, etc. (mm2)
	Screw	Torque
Model	Size	N·m	R/L1	U, V, W	R/L1	U, V, W	Earthing	R/L1	U, V, W	R/L1	U, V, W	Earthing
			S/L2		S/L2		cable	S/L2		S/L2		cable
			T/L3		T/L3			T/L3		T/L3
FR-E740-0.4KSC to 3.7KSC	M4	1.5	2-4	2-4	2	2	2	14	14	2.5	2.5	2.5
FR-E740-5.5KSC	M4	1.5	5.5-4	2-4	3.5	2	3.5	12	14	4	2.5	4
FR-E740-7.5KSC	M4	1.5	5.5-4	5.5-4	3.5	3.5	3.5	12	12	4	4	4
FR-E740-11KSC	M4	1.5	5.5-4	5.5-4	5.5	5.5	8	10	10	6	6	10
FR-E740-15KSC	M5	2.5	8-5	8-5	8	8	8	8	8	10	10	10

Single-phase 200V class (when input power supply is 220V)

			Crimping					Cable Size
Applicable Inverter	Terminal	Tightening	Terminal		HIV Cables, etc. (mm2)			AWG		PVC Cables, etc. (mm2)
Model	Screw	Torque
	Size	N·m	R/L1	U, V, W	R/L1	U, V, W	Earthing	R/L1	U, V, W	R/L1	U, V, W	Earthing
			S/L2		S/L2		cable	S/L2		S/L2		cable
FR-E720S-0.1KSC to 0.4KSC	M3.5	1.2	2-3.5	2-3.5	2	2	2	14	14	2.5	2.5	2.5
FR-E720S-0.75KSC	M4	1.5	2-4	2-4	2	2	2	14	14	2.5	2.5	2.5
FR-E720S-1.5KSC	M4	1.5	2-4	2-4	2	2	2	14	14	2.5	2.5	2.5
FR-E720S-2.2KSC	M4	1.5	5.5-4	2-4	3.5	2	2	12	14	4	2.5	2.5

The cable size is that of the cable (HIV cable (600V class 2 vinyl-insulated cable) etc.) with continuous maximum permissible temperature of 75°C. Assumes that the surrounding air temperature is 50°C or less and the wiring distance is 20m or less.

The recommended cable size is that of the cable (THHW cable) with continuous maximum permissible temperature of 75°C. Assumes that the surrounding air temperature is 40°C or less and the wiring distance is 20m or less. (Selection example for use mainly in the United States.)

The recommended cable size is that of the cable (PVC cable) with continuous maximum permissible temperature of 70°C. Assumes that the surrounding air temperature is 40°C or less and the wiring distance is 20m or less. (Selection example for use mainly in Europe.)

The terminal screw size indicates the terminal size for R/L1, S/L2, T/L3, U, V, W, and a screw for earthing (grounding). A screw for earthing (grounding) of the FR-E720-15KSC is indicated in ( ).

For single-phase power input, the terminal screw size indicates the size of terminal screw for R/L1, S/L2, U, V, W, PR, P/+, N/-, P1 and a screw for earthing (grounding).

NOTE

Tighten the terminal screw to the specified torque. A screw that has been tighten too loosely can cause a short circuit or malfunction. A screw that has been tighten too tightly can cause a short circuit or malfunction due to the unit breakage.

Use crimping terminals with insulation sleeve to wire the power supply and motor.

The line voltage drop can be calculated by the following formula:

	Line voltage drop [V]=	3 × wire resistance[mΩ/m] × wiring distance[m] × current[A]
		1000

Use a larger diameter cable when the wiring distance is long or when it is desired to decrease the voltage drop (torque reduction) in the low speed range.

13

Wiring

(2)Total wiring length

The overall wiring length for connection of a single motor or multiple motors should be within the value in the table below.

Pr. 72 PWM frequency selection										3.7K
Setting				0.1K	0.2K	0.4K	0.75K	1.5K	2.2K
										or More
(carrier frequency)
1 (1kHz) or less			200V class	200m	200m	300m	500m	500m	500m	500m
			400V class	-	-	200m	200m	300m	500m	500m
2 to15			200V class	30m	100m	200m	300m	500m	500m	500m
(2kHz to 14.5kHz)			400V class	-	-	30m	100m	200m	300m	500m

When driving a 400V class motor by the inverter, surge voltages attributable to the wiring constants may occur at the motor terminals, deteriorating the insulation of the motor. Take the following measures 1) or 2) in this case.

1)	Use a "400V class inverter-driven insulation-enhanced motor" and set frequency in Pr. 72 PWM frequency selection
	according to wiring length.
				Wiring Length
			50m or less	50m to 100m	Exceeding 100m
	Carrier frequency		14.5kHz or less	8kHz or less	2kHz or less
2)	Connect the surge voltage suppression filter (FR-ASF-H/FR-BMF-H) on the inverter output side.

NOTE

Especially for long-distance wiring, the inverter may be affected by a charging current caused by the stray capacitances of the wiring, leading to a malfunction of the overcurrent protective function, fast response current limit function, or stall prevention function or a malfunction or fault of the equipment connected on the inverter output side. If malfunction of fast-response current limit function occurs, disable this function. If malfunction of stall prevention

function occurs, increase the stall level. ( Pr. 22 Stall prevention operation level and Pr. 156 Stall prevention operation selection in Chapter 4 of the Instruction Manual (Applied))

When using the automatic restart after instantaneous power failure function with the wiring length exceeding 100m, select without frequency search (Pr. 162 = "1, 11"). ( Refer to Chapter 4 of the Instruction Manual (Applied))

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