Mitsubishi Electronics FR-A701 User Manual

INVERTER FR-A701

INSTRUCTION MANUAL (BASIC)

FR-A721-5.5K to 55K FR-A741-5.5K to 55K

Thank you for choosing this Mitsubishi Inverter. This Instruction Manual is intended for users who "just want to run the inverter". If you are going to utilize functions and performance, refer to the FR-A701 Series Instruction Manual (Applied) [IB0600337ENG]. The Instruction Manual (Applied) is separately available from where you purchased the inverter or your Mitsubishi sales representative.

CONTENTS

OUTLINE ....................................................................................................... 1

1.1 Product checking and parts identification .........................................................................1

1.2 Inverter and peripheral devices.........................................................................................2

1.3 Method of removal and reinstallation of the front cover....................................................4

1.4 Installation of the inverter and enclosure design ..............................................................6

WIRING........................................................................................................ 12

2.1 Terminal connection diagram......................................................................................... 12

2.2 Main circuit terminal specifications................................................................................. 13

2.3 Control circuit specifications........................................................................................... 20

2.4 Connection of motor with encoder (vector control) ........................................................ 28

PRECAUTIONS FOR USE OF THE INVERTER......................................... 35

3.1 EMC and leakage currents ............................................................................................ 35

3.2 Power-off and magnetic contactor (MC)........................................................................ 41

3.3 Inverter-driven 400V class motor ................................................................................... 42

3.4 Precautions for use of the inverter ................................................................................. 43

3.5 Failsafe of the system which uses the inverter .............................................................. 45

DRIVING THE MOTOR ............................................................................... 47

4.1 Step of operation ............................................................................................................47

4.2 Operation panel (FR-DU07)........................................................................................... 48

4.3 Before operation.............................................................................................................56

4.4 Start/stop from the operation panel (PU operation mode)............................................. 83

4.5 Start and stop using terminals (External operation)....................................................... 92

4.6 Parameter List .............................................................................................................. 100

TROUBLESHOOTING .............................................................................. 141

5.1 Reset method of protective function ............................................................................ 141

5.2 List of fault or alarm display ......................................................................................... 142

5.3 Causes and corrective actions..................................................................................... 143

5.4 Correspondences between digital and actual characters............................................ 159

5.5 Check and clear of the faults history..................................................................... 160

5.6 Check first when you have a trouble............................................................................ 162

PRECAUTIONS FOR MAINTENANCE AND INSPECTION..................... 170

6.1 Inspection item ............................................................................................................. 170

6.2 Measurement of main circuit voltages, currents and powers ...................................... 177

SPECIFICATIONS..................................................................................... 182

7.1 Rating ........................................................................................................................... 182

7.2 Common specifications ................................................................................................ 184

7.3 Outline dimension drawings......................................................................................... 185

7.4 Installation of the heatsink portion outside the enclosure for use................................ 194

701

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 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, the safety instruction levels are classified into "WARNING" and "CAUTION".

WARNING

CAUTION

The level may even lead to a serious consequence according to conditions. Both instruction levels must be followed because these are important to personal safety.

Incorrect handling may cause hazardous conditions, resulting in death or severe injury.

Incorrect handling may cause hazardous conditions, resulting in medium or slight injury, or may cause only material damage.

1. Electric Shock Prevention

WARNING

z While power is ON or when the inverter is running, do not

open the front cover. Otherwise you may get an electric shock.

z 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.

z 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.

z 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.

z Any person who is involved in wiring or inspection of this

equipment shall be fully competent to do the work.

z The inverter must be installed before wiring. Otherwise

you may get an electric shock or be injured.

z Setting dial and key operations must be performed with

dry hands to prevent an electric shock.

z Do not subject the cables to scratches, excessive stress,

heavy loads or pinching. Otherwise you may get an electric shock.

z Do not change the cooling fan while power is ON. It is

dangerous to change the cooling fan while power is ON.

z Do not touch the printed circuit board or handle the

cables with wet hands. Otherwise you may get an electric shock.

z 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

z 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.

z If the inverter has become faulty, the inverter power must

be switched OFF. A continuous flow of large current could cause a fire.

3.Injury Prevention

CAUTION

z The voltage applied to each terminal must be the ones

specified in the Instruction Manual. Otherwise burst, damage, etc. may occur.

z The cables must be connected to the correct terminals.

Otherwise burst, damage, etc. may occur.

z Polarity must be correct. Otherwise burst, damage, etc.

may occur.

z 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

z The product must be transported in correct method that

corresponds to the weight. Failure to do so may lead to injuries.

z Do not stack the boxes containing inverters higher than

the number recommended.

z The product must be installed to the position where

withstands the weight of the product according to the information in the Instruction Manual.

z Do not install or operate the inverter if it is damaged or

has parts missing.

z When carrying the inverter, do not hold it by the front

cover or setting dial; it may fall off or fail.

z Do not stand or rest heavy objects on the product. z The inverter mounting orientation must be correct. z Foreign conductive objects must be prevented from

entering the inverter. That includes screws and metal fragments or other flammable substance such as oil.

z As the inverter is a precision instrument, do not drop or

subject it to impact.

z The inverter must be used under the following

environment. Otherwise the inverter may be damaged.

Surrounding air temperature

Ambient humidity

Storage temperature

Atmosphere

Environment

Altitude/ vibration

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

-10°C to +50°C (non-freezing)

90%RH or less (non-condensing)

-20°C to +65°C *1

Indoors (free from corrosive gas, flammable gas, oil mist, dust and dirt)

Maximum 1,000m above sea level for standard operation.

or less at 10 to 55Hz (directions of X, Y, Z

5.9m/s axes)

(2) Wiring

CAUTION

z 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.

z The connection orientation of the output cables U, V, W to

the motor affects the rotation direction of the motor.

A-1

(3) Trial run

CAUTION

z 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

z Any person must stay away from the equipment when the

retry function is set as it will restart suddenly after trip.

z 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.

z 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.

z Performing pre-excitation (LX signal and X13 signal)

under torque control (Real sensorless vector control) may start the motor running at a low speed even when the start command (STF or STR) is not input. The motor may also run at a low speed when the speed limit value = 0 with a start command input. It must be confirmed that the motor running will not cause any safety problem before performing pre-excitation.

z Do not modify the equipment. z

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

(5) Emergency stop

CAUTION

z 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.

z 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.

z 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

z Do not carry out a megger (insulation resistance) test on

the control circuit of the inverter. It will cause a failure.

(7) Disposal

CAUTION

z 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.

CAUTION

z 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.

z Do not use a magnetic contactor on the inverter input for

frequent starting/stopping of the inverter. Otherwise the life of the inverter decreases.

z The effect of electromagnetic interference must be

reduced by using a noise filter or by other means. Otherwise nearby electronic equipment may be affected.

z 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.

z 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.

z 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.

z 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.

z Before running an inverter which had been stored for a long

period, inspection and test operation must be performed.

z For prevention of damage due to static electricity, nearby

metal must be touched before touching this product to eliminate static electricity from your body.

A-2

— CONTENTS —

1OUTLINE 1

1.1 Product checking and parts identification .............................................................. 1

1.2 Inverter and peripheral devices..............................................................................2

1.2.1 Peripheral devices ..................................................................................................................... 3

1.3 Method of removal and reinstallation of the front cover......................................... 4

1.4 Installation of the inverter and enclosure design.................................................... 6

1.4.1 Inverter installation environment................................................................................................ 6

1.4.2 Cooling system types for inverter enclosure.............................................................................. 9

1.4.3 Inverter placement ................................................................................................................... 10

2WIRING 12

2.1 Terminal connection diagram...............................................................................12

2.2 Main circuit terminal specifications ...................................................................... 13

2.2.1 Specification of main circuit terminal ....................................................................................... 13

2.2.2 Terminal arrangement of the main circuit terminal, power supply and the motor wiring ......... 14

2.2.3 Cables and wiring length ......................................................................................................... 16

2.2.4 When connecting the control circuit and the main circuit separately

to the power supply ................................................................................................................. 19

2.3 Control circuit specifications ................................................................................ 20

2.3.1 Control circuit terminals ........................................................................................................... 20

2.3.2 Changing the control logic ....................................................................................................... 23

2.3.3 Control circuit terminal layout .................................................................................................. 25

2.3.4 Wiring instructions ................................................................................................................... 25

2.3.5 When connecting the operation panel using a connection cable ............................................ 26

2.3.6 RS-485 terminal block ............................................................................................................. 26

2.3.7 Communication operation........................................................................................................ 27

2.3.8 USB connector ........................................................................................................................ 27

CONTENTS

2.4 Connection of motor with encoder (vector control) .............................................. 28

3 PRECAUTIONS FOR USE OF THE INVERTER 35

3.1 EMC and leakage currents ..................................................................................35

3.1.1 Leakage currents and countermeasures ................................................................................. 35

3.1.2 EMC measures ........................................................................................................................ 37

3.1.3 Power supply harmonics ......................................................................................................... 39

3.1.4 Harmonic suppression guideline .............................................................................................39

3.2 Power-off and magnetic contactor (MC) ..............................................................41

3.3 Inverter-driven 400V class motor ......................................................................... 42

3.4 Precautions for use of the inverter ....................................................................... 43

3.5 Failsafe of the system which uses the inverter .................................................... 45

4 DRIVING THE MOTOR 47

4.1 Step of operation.................................................................................................. 47

4.2 Operation panel (FR-DU07)................................................................................. 48

4.2.1 Parts of the operation panel (FR-DU07) .................................................................................. 48

4.2.2 Basic operation (factory setting) .............................................................................................. 49

4.2.3 Operation lock (Press [MODE] for an extended time (2s)) ...................................................... 50

4.2.4 Monitoring of output current and output voltage ...................................................................... 51

4.2.5 First priority monitor ................................................................................................................. 51

4.2.6 Setting dial push ...................................................................................................................... 51

4.2.7 Changing the parameter setting value..................................................................................... 52

4.2.8 Parameter clear, all parameter clear .......................................................................................53

4.2.9 Parameter copy and parameter verification............................................................................. 54

4.3 Before operation ..................................................................................................56

4.3.1 Simple mode parameter list ..................................................................................................... 56

4.3.2 Overheat protection of the motor by the inverter (Pr. 9) .......................................................... 57

4.3.3 When the rated motor frequency is 50Hz (Pr. 3) .................................................................... 58

4.3.4 Increase the starting torque (Pr. 0) ......................................................................................... 59

4.3.5 Limit the maximum and minimum output frequency (Pr. 1, Pr. 2) ........................................... 60

4.3.6 Change acceleration and deceleration time (Pr. 7, Pr. 8)........................................................ 61

4.3.7 Selection of the start command and frequency command locations (Pr. 79) .......................... 62

4.3.8 Large starting torque and low speed torque are necessary (Advanced magnetic

flux vector control, Real sensorless vector control) (Pr. 71, Pr. 80, Pr. 81, Pr. 800) ............. 63

4.3.9 Higher accuracy operation using a motor with encoder (Vector control)

(Pr.71, Pr.80, Pr.81, Pr.359, Pr.369, Pr.800) .......................................................................... 66

4.3.10 Exhibiting the best performance of the motor performance (offline auto tuning)

(Pr. 71, Pr. 83, Pr. 84, Pr. 96) .............................................................................................. 71

4.3.11 High accuracy operation unaffected by the motor temperature

(online auto tuning) (Pr. 95) ................................................................................................ 76

4.3.12 To perform high accuracy/fast response operation (gain adjustment of Real

sensorless vector control and vector control) (Pr. 818 to Pr. 821, Pr. 880) .......................... 77

4.4 Start/stop from the operation panel (PU operation mode) ...................................83

4.4.1 Setting the set frequency to operate (example: performing operation at 30Hz) ...................... 83

4.4.2 Use the setting dial like a potentiometer to perform operation. ............................................... 85

4.4.3 Setting the frequency by switches (three-speed setting) ......................................................... 86

4.4.4 Setting the frequency by analog input (voltage input) ............................................................. 88

4.4.5 Setting the frequency by analog input (current input) .............................................................. 90

4.5 Start and stop using terminals (External operation) ............................................. 92

4.5.1 Setting the frequency by the operation panel (Pr. 79 = 3) ....................................................... 92

4.5.2 Setting the frequency by switches (three-speed setting) (Pr. 4 to Pr. 6) ................................. 94

4.5.3 Setting the frequency by analog input (voltage input) ............................................................. 96

4.5.4 Changing the frequency (60Hz, initial value) at the maximum voltage input

(5V, initial value) ...................................................................................................................... 97

4.5.5 Setting the frequency by analog input (current input) .............................................................. 98

4.5.6 Changing the frequency (60Hz, initial value) at the maximum current input

(at 20mA, initial value) ............................................................................................................. 99

4.6 Parameter List.................................................................................................... 100

4.6.1 List of parameters classified by the purpose ......................................................................... 100

4.6.2 Parameter list ........................................................................................................................ 103

5 TROUBLESHOOTING 141

5.1 Reset method of protective function .................................................................. 141

5.2 List of fault or alarm display ...............................................................................142

5.3 Causes and corrective actions...........................................................................143

5.4 Correspondences between digital and actual characters .................................. 159

5.5 Check and clear of the faults history.................................................................. 160

5.6 Check first when you have a trouble.................................................................. 162

5.6.1 Motor does not start............................................................................................................... 162

5.6.2 Motor or machine is making abnormal acoustic noise........................................................... 164

5.6.3 Inverter generates abnormal noise........................................................................................ 164

5.6.4 Motor generates heat abnormally.......................................................................................... 165

5.6.5 Motor rotates in the opposite direction .................................................................................. 165

5.6.6 Speed greatly differs from the setting .................................................................................... 165

5.6.7 Acceleration/deceleration is not smooth ................................................................................ 166

5.6.8 Motor current is too large....................................................................................................... 166

5.6.9 Speed does not accelerate .................................................................................................... 167

5.6.10 Motor and machine vibrate .................................................................................................... 167

5.6.11 Speed varies during operation............................................................................................... 168

5.6.12 Operation mode is not changed properly .............................................................................. 169

5.6.13 Operation panel (FR-DU07) display is not operating............................................................. 169

5.6.14 Power lamp is not lit .............................................................................................................. 169

5.6.15 Unable to write parameter setting.......................................................................................... 169

CONTENTS

6 PRECAUTIONS FOR MAINTENANCE AND INSPECTION 170

6.1 Inspection item...................................................................................................170

6.1.1 Daily inspection ..................................................................................................................... 170

6.1.2 Periodic inspection ................................................................................................................ 170

6.1.3 Daily and periodic inspection................................................................................................. 171

6.1.4 Display of the life of the inverter parts ................................................................................... 172

6.1.5 Checking the inverter and converter modules ....................................................................... 173

6.1.6 Cleaning ................................................................................................................................ 174

6.1.7 Replacement of parts ............................................................................................................ 174

6.2 Measurement of main circuit voltages, currents and powers............................. 177

6.2.1 Measurement of powers ........................................................................................................ 179

6.2.2 Measurement of voltages and use of PT ............................................................................... 179

6.2.3 Measurement of currents....................................................................................................... 180

6.2.4 Use of CT and transducer ..................................................................................................... 180

6.2.5 Measurement of inverter input power factor .......................................................................... 180

6.2.6 Measurement of converter output voltage (across terminals P/+ and N/-) ............................ 181

6.2.7 Measurement of inverter output frequency ............................................................................ 181

6.2.8 Insulation resistance test using megger ................................................................................ 181

6.2.9 Pressure test ......................................................................................................................... 181

III

7 SPECIFICATIONS 182

7.1 Rating................................................................................................................. 182

7.1.1 Inverter rating ........................................................................................................................ 182

7.1.2 Motor rating ........................................................................................................................... 183

7.2 Common specifications...................................................................................... 184

7.3 Outline dimension drawings...............................................................................185

7.3.1 Inverter outline dimension drawings ...................................................................................... 185

7.3.2 Dedicated motor outline dimension drawings ........................................................................ 190

7.4 Installation of the heatsink portion outside the enclosure for use ...................... 194

7.4.1 Protrusion of heatsink ............................................................................................................ 194

APPENDICES 196

Appendix 1 Main differences and compatibilities with the FR-A700 series ................. 196

Appendix 2 Instructions for compliance with the EU Directives (400V class only)..... 197

Appendix 3 Instructions for UL and cUL Compliance................................................. 199

Appendix 4 Control mode-based parameter (function) correspondence

table and instruction code list ................................................................... 201

<Abbreviations> DU: Operation panel (FR-DU07) PU: Operation panel (FR-DU07) and parameter unit (FR-PU04, FR-PU07) Inverter: Mitsubishi inverter FR-A701 series FR-A701: Mitsubishi inverter FR-A701 series Pr.: Parameter Number (Number assigned to function) PU operation: Operation using the PU (FR-DU07/FR-PU04/FR-PU07) External operation: Operation using the control circuit signals Combined operation: Combined operation using the PU (FR-DU07/FR-PU04/FR-PU07) and external operation Standard motor: SF-JR Constant-torque motor: SF-HRCA Vector dedicated motor: SF-V5RU

ONWORKS

L DeviceNet is a registered trademark of ODVA (Open DeviceNet Vender Association, Inc.). Company and product names herein are the trademarks and registered trademarks of their respective owners.

REMARKS

⋅ For differences and compatibility between the FR-A701 series and FR-A700 series, refer to page 196.

is registered trademarks of Echelon Corporation in the U.S.A. and other countries.

Product checking and parts identification

1 OUTLINE

1.1 Product 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

A721

5.5

Cooling fan

(Refer to page 175)

Symbol

A721

Front cover

(Refer to page 4)

Operation panel (FR-DU07)

Power lamp

Lit when the control circuit (R1/L11, S1/L21) is supplied with power.

Alarm lamp

Lit when the inverter is in the alarm status (major fault).

Capacity plate

Voltage Class

Three-phase 200V class

Three-phase 400V classA741

(Refer to page 48)

FR-A721-5.5K

Inverter Model

Indicate inverter capacity (kW)

Serial number

• Accessory

· Eyebolt for hanging the inverter

Capacity Eyebolt size Quantity

11K , 1 5 K M8 2

18.5K to 30K M10 2

37K to 55K M12 2

* The 5.5K and 7.5K are not provided with eyebolts.

(Refer to page 175)

USB connector

(Refer to page 337)

PU connector

(Refer to page 22)

RS-485 terminals

(Refer to page 26)

Connector for plug-in option connection

(Refer to the Instruction Manual of options.) There are three connection connectors and they are called connector 1, connector 2, and connector 3 from the top.

Voltage/current input switch

(Refer to page 12)

AU/PTC switchover switch

(Refer to Chapter 4 of the Instruction Manual (Applied).)

Control circuit terminal block

Main circuit terminal block

(Refer to page 20)

Charge lamp

Lit when power is supplied to the main circuit

Fan blockFan cover

(Refer to page 175)

(Refer to page 13)

Rating plate

Inverter Model Applied motor

Output rating Serial number

OUTLINE

(Refer to page 13)

Rating plate

FR-A721-5.5K

capacity

Input rating

REMARKS

For removal and reinstallation of covers, refer to page 4.

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 details, refer to page 39 .)

Inverter and peripheral devices

1.2 Inverter and peripheral devices

Three-phase AC power supply

Use within the permissible power supply specifications of the inverter.

(Refer to page 182)

Moulded case circuit breaker (MCCB) or earth leakage circuit breaker (ELB), fuse

The breaker must be selected carefully since an in-rush current flows in the inverter at power on.

(Refer to page 3)

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.

(Refer to page 3)

USB connector

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

(Refer to page 27)

Inverter (FR-A701)

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 6) 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 12)

EMC filter (ferrite core) (FR-BLF)

Install a noise filter to reduce the electromagnetic noise generated from the inverter. Effective in the range from about 1MHz to 10MHz. When more wires are passed through, a more effective result can be obtained. The total number of wires passed through should be 4T or more.

EMC filter (capacitor) (FR-BIF)

Reduces the radio noise.

Devices connected to the output

Do not install a power factor correction capacitor, surge suppressor or radio noise 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.

: Install these options as required.

R/L1 S/L2 T/L3

Earth

(Ground)

UWV

Earth (Ground)

EMC filter (ferrite core) (FR-BLF)

Install a noise filter to reduce the electromagnetic noise generated from the inverter. Effective in the range from about 1MHz to 10MHz. A wire should be wound four turns at a maximum.

Motor

CAUTION

Do not install a power factor correction capacitor, surge suppressor or radio noise 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.

· This inverter has a built-in AC reactor (FR-HAL) and a circuit type specified in Harmonic suppression guideline in Japan is threephase bridge (capacitor smoothed) and with reactor (AC side). (Refer to page 39) Do not use an AC reactor (FR-HAL) of a standalone option except following purpose. (Note that overload protection of the converter may operate when a thyristor load is connected in the power supply system. To prevent this, always install an optional stand-alone AC reactor (FR-HAL).) A DC reactor (FR-HEL) can not be connected to the inverter.

· 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, connecting a capacitor type filter will reduce electromagnetic wave interference.

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

Inverter and peripheral devices

1.2.1 Peripheral 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:

200V class

Motor Output

(kW)

5.5 FR-A721-5.5K 40A S-N20, N21

7.5 FR-A721-7.5K 50A S-N25

11 FR-A721-11K 75A S-N35

15 FR-A721-15K 100A S-N50

18.5 FR-A721-18.5K 125A S-N50

22 FR-A721-22K 150A S-N65

30 FR-A721-30K 175A S-N80

37 FR-A721-37K 225A S-N125

45 FR-A721-45K 300A S-N150

55 FR-A721-55K 350A S-N180

400V class

Motor Output

(kW)

5.5 FR-A741-5.5K 20A S-N11, N12

7.5 FR-A741-7.5K 30A S-N20, N21

11 FR-A741-11K 40A S-N20, N21

15 FR-A741-15K 50A S-N20, N21

18.5 FR-A741-18.5K 60A S-N25

22 FR-A741-22K 75A S-N25

30 FR-A741-30K 100A S-N50

37 FR-A741-37K 125A S-N50

45 FR-A741-45K 150A S-N65

55 FR-A741-55K 175A S-N80

*1 Selections for use of the Mitsubishi 4-pole standard motor with power supply voltage of 200VAC/400VAC 50Hz. *2 Select the MCCB according to the inverter power supply capacity.

Install one MCCB per inverter. For the use in the United States or Canada, provide the appropriate UL and cUL listed Class RK5 or Class T type fuse or UL 489 molded case circuit breaker (MCCB) that is suitable for branch circuit protection.

(Refer to page 199.)

*3 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.

Applicable Inverter Model Breaker Selection*2 Input Side Magnetic Contactor*3

MCCB INV

OUTLINE

CAUTION

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

Method of removal and reinstallation of

the front cover

1.3 Method of removal and reinstallation of the front cover

•Removal of the operation panel

1) Loosen the two screws on the operation panel. (These screws cannot be removed.)

When reinstalling the operation panel, insert it straight to reinstall securely and tighten the fixed screws of the operation panel.

2) Push the left and right hooks of the operation panel and pull the operation panel toward you to remove.

•Removal of the front cover

1) Remove installation screws on the front cover 1 to remove the front cover 1.

Front cover 1

3) Pull the front cover 2 toward you to remove by pushing an installation hook on the right side using left fixed hooks as supports.

2) Loosen the installation screws of the front cover 2.

Front cover 2

Installation hook

•Reinstallation of the front cover

1) Insert the two fixed hooks on the left side of the front cover 2 into the sockets of the inverter.

3) Fix the front cover 2 with the installation screws. 4) Fix the front cover 1 with the installation

Method of removal and reinstallation of

the front cover

2) Using the fixed hooks as supports, securely press the front cover 2 against the inverter. (Although installation can be done with the operation panel mounted, make sure that a connector is securely fixed.)

Front cover 2 Front cover 2

screws.

Front cover 2

Front cover 1

REMARKS

· For the 55K, the front cover 1 is separated into two parts.

CAUTION

1. Fully make sure that the front cover has been reinstalled securely. Always tighten the installation screws of the front cover.

2. The same serial number is printed on the capacity plate of the front cover and the rating plate of the inverter. Before reinstalling the front cover, check the serial numbers to ensure that the cover removed is reinstalled to the inverter from where it was removed.

OUTLINE

Installation of the inverter and enclosure

design

1.4 Installation of the inverter and enclosure design

When an inverter enclosure is to be designed and manufactured, heat generated by contained equipment, etc., the environment of an operating place, and others must be fully considered to determine the enclosure structure, size and equipment layout. The inverter unit uses many semiconductor devices. To ensure higher reliability and long period of operation, operate the inverter in the ambient environment that completely satisfies the equipment specifications.

1.4.1 Inverter installation environment

The inverter consists of precision mechanical and electronic parts. Never install or handle it in any of the following conditions as doing so could cause an operation fault or failure.

Vibration (5.9m/s2 or more

Direct sunlight

at 10 to 55Hz (directions of X, Y, Z axes))

High temperature, high humidity

Horizontal placement

Vertical mounting (When installing two or more inverters, install them in parallel.)

Transportation by holding the front cover

Oil mist, flammable gas, corrosive gas, fluff, dust, etc.

Mounting to combustible material

As the inverter installation environment should satisfy the standard specifications indicated in the following table, operation in any place that does not meet these conditions not only deteriorates the performance and life of the inverter, but also causes a failure. Refer to the following points and take adequate measures.

Environmental standard specifications of inverter

Item Description

Surrounding air

temperature

Ambient humidity 90% RH maximum (non-condensing)

Atmosphere Free from corrosive and explosive gases, dust and dirt

Maximum Altitude 1,000m or less

Vibration

-10°C to +50°C (non-freezing)

5.9m/s

or less at 10 to 55Hz (directions of X, Y, Z axes)

Installation of the inverter and enclosure

design

(1) Temperature

The permissible surrounding air temperature of the inverter is between -10°C and +50°C. Always operate the inverter within this temperature range. Operation outside this range will considerably shorten the service lives of the semiconductors, parts, capacitors and others. Take the following measures so that the surrounding air temperature of the inverter falls within the specified range.

1) Measures against high temperature

• Use a forced ventilation system or similar cooling system. (Refer to page 9.)

• Install the enclosure in an air-conditioned electrical chamber.

• Block direct sunlight.

• Provide a shield or similar plate to avoid direct exposure to the radiated heat and wind of a heat source.

• Ventilate the area around the enclosure well.

2) Measures against low temperature

• Provide a space heater in the enclosure.

• Do not power off the inverter. (Keep the start signal of the inverter off.)

3) Sudden temperature changes

• Select an installation place where temperature does not change suddenly.

• Avoid installing the inverter near the air outlet of an air conditioner.

• If temperature changes are caused by opening/closing of a door, install the inverter away from the door.

(2) Humidity

Normally operate the inverter within the 45 to 90% range of the ambient humidity. Too high humidity will pose problems of reduced insulation and metal corrosion. On the other hand, too low humidity may produce a spatial electrical breakdown. The insulation distance specified in JEM1103 "Control Equipment Insulator" is defined as humidity 45 to 85%.

1) Measures against high humidity

• Make the enclosure enclosed, and provide it with a hygroscopic agent.

• Take dry air into the enclosure from outside.

• Provide a space heater in the enclosure.

2) Measures against low humidity What is important in fitting or inspection of the unit in this status is to discharge your body (static electricity) beforehand and keep your body from contact with the parts and patterns, besides blowing air of proper humidity into the enclosure from outside.

3) Measures against condensation Condensation may occur if frequent operation stops change the in-enclosure temperature suddenly or if the outsideair temperature changes suddenly. Condensation causes such faults as reduced insulation and corrosion.

• Take the measures against high humidity in 1).

• Do not power off the inverter. (Keep the start signal of the inverter off.)

OUTLINE

(3) Dust, dirt, oil mist

Dust and dirt will cause such faults as poor contact of contact points, reduced insulation or reduced cooling effect due to moisture absorption of accumulated dust and dirt, and in-enclosure temperature rise due to clogged filter. In the atmosphere where conductive powder floats, dust and dirt will cause such faults as malfunction, deteriorated insulation and short circuit in a short time. Since oil mist will cause similar conditions, it is necessary to take adequate measures.

Countermeasures

• Place in a totally enclosed enclosure. Take measures if the in-enclosure temperature rises. (Refer to page 9.)

• Purge air. Pump clean air from outside to make the in-enclosure pressure higher than the outside-air pressure.

Installation of the inverter and enclosure

design

(4) Corrosive gas, salt damage

If the inverter is exposed to corrosive gas or to salt near a beach, the printed board patterns and parts will corrode or the relays and switches will result in poor contact. In such places, take the measures given in Section (3).

(5) Explosive, flammable gases

As the inverter is non-explosion proof, it must be contained in an explosion proof enclosure. In places where explosion may be caused by explosive gas, dust or dirt, an enclosure cannot be used unless it structurally complies with the guidelines and has passed the specified tests. This makes the enclosure itself expensive (including the test charges). The best way is to avoid installation in such places and install the inverter in a non-hazardous place.

(6) Highland

Use the inverter at the altitude of within 1000m. If it is used at a higher place, it is likely that thin air will reduce the cooling effect and low air pressure will deteriorate dielectric strength.

(7) Vibration, impact

The vibration resistance of the inverter is up to 5.9m/s2 at 10 to 55Hz frequency (directions of X, Y, Z axes) and 1mm amplitude. Vibration or impact, if less than the specified value, applied for a long time may make the mechanism loose or cause poor contact to the connectors. Especially when impact is imposed repeatedly, caution must be taken as the part pins are likely to break.

Countermeasures

• Provide the enclosure with rubber vibration isolators.

• Strengthen the structure to prevent the enclosure from resonance.

• Install the enclosure away from sources of vibration.

Installation of the inverter and enclosure

design

1.4.2 Cooling system types for inverter enclosure

From the enclosure that contains the inverter, the heat of the inverter and other equipment (transformers, lamps, resistors, etc.) and the incoming heat such as direct sunlight must be dissipated to keep the in-enclosure temperature lower than the permissible temperatures of the in-enclosure equipment including the inverter. The cooling systems are classified as follows in terms of the cooling calculation method.

1) Cooling by natural heat dissipation from the enclosure surface (Totally enclosed type)

2) Cooling by heat sink (Aluminum heatsink, etc.)

3) Cooling by ventilation (Forced ventilation type, pipe ventilation type)

4) Cooling by heat exchanger or cooler (Heat pipe, cooler, etc.)

Cooling System Enclosure Structure Comment

Natural cooling

Forced cooling

Natural ventilation (Enclosed, open type)

Natural ventilation (Totally enclosed type)

Heatsink cooling

Forced ventilation

Heat pipe Totally enclosed type for enclosure downsizing.

Heatsink

INV

Heat pipe

INV

Low in cost and generally used, but the enclosure size increases as the inverter capacity increases. For relatively small capacities.

Being a totally enclosed type, the most appropriate for hostile environment having dust, dirt, oil mist, etc. The enclosure size increases depending on the inverter capacity.

Having restrictions on the heatsink mounting position and area, and designed for relative small capacities.

For general indoor installation. Appropriate for enclosure downsizing and cost reduction, and often used.

OUTLINE

Installation of the inverter and enclosure

design

1.4.3 Inverter placement

(1) Installation of the Inverter

Installation on the enclosure

CAUTION

⋅ When encasing multiple inverters, install them in parallel as a cooling measure. ⋅ Install the inverter vertically.

Vertical

Refer to the clearances below.

(2) Clearances around the inverter

To ensure ease of heat dissipation and maintenance, leave at least the shown clearances around the inverter. At least the following clearances are required under the inverter as a wiring space, and above the inverter as a heat dissipation space.

Surrounding air temperature and humidity

Measurement position

Inverter

5cm

Measurement position

5cm

Temperature: -10°C to 50°C Ambient humidity: 90% RH

5cm or more

10cm or more

5cm or more

10cm or more

maximum

Leave enough clearances and take cooling measures.

REMARKS

For replacing the cooling fan, 30cm of space is necessary in front of the inverter. Refer to page 175 for fan replacement.

Clearances (side)Clearances (front)

5cm

Inverter

or more

(3) Inverter mounting orientation

Mount the inverter on a wall as specified. Do not mount it horizontally or any other way.

Installation of the inverter and enclosure

design

(4) Above the inverter

Heat is blown up from inside the inverter by the small fan built in the unit. Any equipment placed above the inverter should be heat resistant.

(5) Arrangement of multiple inverters

When multiple inverters are placed in the same enclosure, generally arrange them horizontally as shown in the figure below (a). When it is inevitable to arrange them vertically to minimize space, take such measures as to provide guides since heat from the bottom inverters can increase the temperatures in the top inverters, causing inverter failures.

When mounting multiple inverters, fully take caution not to make the surrounding air temperature of the inverter higher than the permissible value by providing ventilation and increasing the enclosure size.

InverterInverterInverter Inverter

Guide Guide

Inverter

Enclosure Enclosure

(a) Horizontal arrangement (b) Vertical arrangement

Arrangement of multiple inverters

Inverter

Guide

(6) Placement of ventilation fan and inverter

Heat generated in the inverter is blown up from the bottom of the unit as warm air by the cooling fan. When installing a ventilation fan for that heat, determine the place of ventilation fan installation after fully considering an air flow. (Air passes through areas of low resistance. Make an airway and airflow plates to expose the inverter to cool air.)

Inverter Inverter

OUTLINE

Placement of ventilation fan and inverter

Terminal connection diagram

2 WIRING

2.1 Terminal connection diagram

Sink logic

Main circuit terminal

Control circuit terminal

MCCB

*6 *6

R/L1

Three-phase AC

power supply

Jumper

*1. To supply power to the

control circuit separately, remove the jumper across R1/L11 and S1/L21.

Control input signals (No voltage input allowed)

Terminal functions vary with the input terminal assignment (Pr. 178 to Pr. 189)

(Refer to Chapter 4 of the Instruction Manual (Applied))

Forward

rotation

start

Reverse

rotation

start

Start self-

holding selection

High speed

Multi-speed selection

*2. JOG terminal can be used

as pulse train input terminal. Use Pr. 291 to select JOG/pulse.

Middle

speed

Low speed

Jog operation

Second function selection

*3. AU terminal can be

used as PTC input terminal.

Terminal 4 input selection

(Current input selection)

Selection of automatic restart

Output stop

Reset

after instantaneous

power failure

Contact input common

24VDC power supply

(Common for external power supply transistor)

Frequency setting signal (Analog)

Frequency setting

potentiometer

1/2W1k

Terminal input specifications

4. can be changed by analog input specifications switchover (Pr. 73, Pr. 267). Set the voltage/current input switch in the OFF position to select voltage input (0 to 5V/0 to10V) and ON to select current input (4 to 20mA).

(Refer to Chapter 4 of the Instruction Manual (Appl ied))

Auxiliary

input

Terminal

4 input

(Current

input)

(+)

(-)

(+)

(-)

Connector for plug-in option connection

. It is recommended to use 2W1kΩ

when the frequency setting signal is changed frequently.

Earth

(Ground)

S/L2 T/L3

R1/L11 S1/L21

Main circuit

Control circuit

STF

STR

STOP

JOG

MRS

RES

PTC

10E(+10V)

10(+5V)

Option connector 1

Option connector 2

Option connector 3

SOURCE

Voltage/current

input switch

OFF

0 to 5VDC

0 to 10VDC

0 to 20mADC

(Initial value)

selectable

(Analog common)

10VDC

0 to

0 to ±5VDC

selectable

4 to 20mADC

0 to 5VDC 0 to 10VDC

selectable

SINK

(Initial value)

CAUTION

· To prevent a malfunction due to noise, keep the signal cables more than 10cm away 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.

· Set the voltage/current input switch correctly. Different setting may cause a fault, failure or malfunction.

N/-P/+

RUN

IPF

PU connector

USB connector

TXD+

TXD-

RXD+

RXD-

Terminating

VCC

resistor

U V

*6. Do not connect any options to P/+ and

N/-.

Relay output 1 (Fault output)

Terminal functions vary with the output terminal assignment (Pr. 195, Pr. 196)

(Refer to Chapter 4 of the Instruction Manual (Applied))

Relay output 2

Open collector output

Running

Up to frequency

Instantaneous power failure

Overload

Terminal functions vary with the output terminal assignment (Pr. 190 to Pr. 194)

(Refer to Chapter 4 of the Instruction Manual (Applied))

Frequency detection

Open collector output common

/source common

Sink

7. It is not necessary when calibrating the indicator from the operation panel.

Calibration resistor *7

(+)

Analog signal output (0 to 10VDC)

(-)

RS-485 terminals

Data transmission

Data reception

GND

(Permissible load

current 100mA)

Motor

Earth (Ground)

Relay output

*8. FM terminal can be

used for pulse train output of open collector output using Pr.291.

Indicator (Frequency meter, etc.)

Moving-coil type 1mA full-scale

2.2 Main circuit terminal specifications

2.2.1 Specification of main circuit terminal

Main circuit terminal specifications

Termina l

Symbol

R/L1, S/L2, T/L3

U, V, W Inverter output Connect a three-phase squirrel-cage motor.

R1/L11, S1/L21

P/+, N/- DC terminal Do not connect any options.

Termina l N ame Description

AC power input Connect to the commercial power supply.

Connected to the AC power supply terminals R/L1 and S/L2. To retain the fault display and fault output, remove the jumpers from terminals R/L1-R1/ L11 and S/L2-S1/L21 and apply external power to these terminals. Do not turn off the power supply for control circuit (R1/L11, S1/L21) with the

Power supply for control circuit

Earth (Ground)

main circuit power (R/L1, S/L2, T/L3) on. Doing so may damage the inverter. The circuit should be configured so that the main circuit power (R/ L1, S/L2, T/L3) is also turned off when the power supply for control circuit (R1/L11, S1/L21) is off. The following power supply capacities are required to supply power separately from R1/L11 and S1/L21: 90VA for 15K or lower, 100VA for 18.5K or higher

For earthing (grounding) the inverter chassis. Must be earthed (grounded).

WIRING

Main circuit terminal specifications

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

200V class

FR-A721-5.5K, 7.5K FR-A721-11K, 15K

R1/L11 S1/L21

Screw size

(M4)

Screw size (M5)

R/L1 S/L2 T/L3

N/-

Charge lamp

Jumper

Screw size (M5 for 11K, M6 for 15K)

P/+

Power supply

FR-A721-18.5K to 45K FR-A721-55K

Motor

Power supply

Screw size (M4)

R1/L11 S1/L21

Charge lamp

Jumper

Screw size

R/L1 S/L2 T/L3

(M4)

R1/L11 S1/L21

Charge lamp

Jumper

N/- P/+

Motor

Screw size (M4)

R1/L11 S1/L21

Charge lamp

Jumper

Screw size (18.5K/22K/30K: M8, 37K/45K: M10)

R/L1 S/L2

Power supply

T/L3

Motor

Screw size (M6 for 18.5K, 22K and 30K M8 for 37K and 45K)

N/-

P/+

Screw size (M12)

R/L1 S/L2 T/L3

Power supply

Motor

N/-

Screw size (M8)

P/+

400V class

FR-A741-5.5K, 7.5K FR-A741-11K, 15K

Screw size (M4)

R1/L11

S1/L21

Charge lamp

Jumper

Screw size (M4)

Main circuit terminal specifications

S1/L21

R1/L11

Screw size (M4)

Charge lamp

Jumper

P/+

R/L1 S/L2 T/L3

N/-

Power supply

FR-A741-18.5K to 45K FR-A741-55K

Screw size (M6 for 18.5K to 30K M8 for 37K and 45K)

Motor

Screw size (M4)

S1/L21

R1/L11

Charge lamp

Jumper

Screw size (M5)

R/L1 S/L2 T/L3

Power supply

Motor

S1/L21

R1/L11

P/+

N/-

Screw size (M4)

Charge lamp

Jumper

WIRING

R/L1 S/L2 T/L3

Power supply

Motor

N/-

P/+

R/L1 S/L2 T/L3

Screw size (M8)

N/-

P/+

Power supply

CAUTION

· The power supply cables must be connected to R/L1, S/L2, T/L3. (Phase sequence needs not to be matched.) Never connect the power cable to the U, V, W of the inverter. Doing so will damage the inverter.

· Connect the motor to U, V, W. At this time, turning ON the forward rotation switch (signal) rotates the motor in the counterclockwise direction when viewed from the motor shaft.

Motor

Main circuit terminal specifications

2.2.3 Cables and wiring length

(1) Applicable cable size

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.

200V class (when input power supply is 220V)

Earthing

cable

Cable Sizes

AWG/MCM *2

R/L1,

S/L2,

U, V, W

T/L3

PVC, etc. (mm2) *3

R/L1, S/L2,

T/L3

U, V, W

Earthing

cable

Applicable Inverter

Model

Terminal

Screw

Size *4

Tightening

Torque N · m

Crimping

Ter min al

R/L1, S/L2,

T/L3

U, V, W

HIV, etc. (mm2) *1

R/L1, S/L2,

T/L3

U, V, W

FR-A721-5.5K M5 2.5 5.5-5 5.5-5 5.5 5.5 5.5 10 10 6 6 6 FR-A721-7.5K M5 2.5 14-5 8-5 14 8 5.5 6 8 16 10 16 FR-A721-11K M5 2.5 14-5 14-5 14 14 14 6 6 16 16 16 FR-A721-15K M6 4.4 22-6 22-6 22 22 14 4 4 25 25 16 FR-A721-18.5K M8(M6) 7.8 38-8 38-8 38 38 22 2 2 35 35 25 FR-A721-22K M8(M6) 7.8 38-8 38-8 38 38 22 2 2 35 35 25 FR-A721-30K M8(M6) 7.8 60-8 60-8 60 60 22 1/0 1/0 50 50 25 FR-A721-37K M10(M8) 14.7 80-10 80-10 80 80 22 3/0 3/0 70 70 35 FR-A721-45K M10(M8) 14.7 100-10 100-10 100 100 38 4/0 4/0 95 95 50 FR-A721-55K M12(M8) 24.5 100-12 100-12 100 100 38 4/0 4/0 95 95 50

*1 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.

*2 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.)

*3 For the 15K or lower, 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. For the 18.5K or higher, the recommended cable size is that of the cable (XLPE cable) with continuous maximum permissible temperature of 90°C. Assumes that the surrounding air temperature is 40°C or less and wiring is performed in an enclosure. (Selection example for use mainly in Europe.)

*4 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 18.5K or

higher

is indicated in ( ).

400V class (when input power supply is 440V)

Earthing

Cable

Cable Sizes

AWG/MCM *2

R/L1, S/L2,

U, V, W

T/L3

PVC, etc. (mm2) *3

R/L1, S/L2,

T/L3

90°C

U, V, W

. Assumes that

Earthing

Cable

75°C

Crimping

Terminal

R/L1, S/L2,

T/L3

U, V, W

HIV, etc. (mm2) *1

R/L1, S/L2,

T/L3

U, V, W

Applicable Inverter

Model

Ter min al

Screw Size *4

Tightening

Tor q u e N·m

FR-A741-5.5K M4 1.5 2-4 2-4 2 2 3.5 12 14 2.5 2.5 4 FR-A741-7.5K M4 1.5 5.5-4 5.5-4 3.5 3.5 3.5 12 12 4 4 4 FR-A741-11K M5 2.5 5.5-5 5.5-5 5.5 5.5 8 10 10 6 6 10 FR-A741-15K M5 2.5 8-5 8-5 8 8 8 8 8 10 10 10 FR-A741-18.5K M6 4.4 14-6 8-6 14 8 14 6 8 16 10 16 FR-A741-22K M6 4.4 14-6 14-6 14 14 14 6 6 16 16 16 FR-A741-30K M6 4.4 22-6 22-6 22 22 14 4 4 25 25 16 FR-A741-37K M8 7.8 22-8 22-8 22 22 14 4 4 25 25 16 FR-A741-45K M8 7.8 38-8 38-8 38 38 22 1 2 50 50 25 FR-A741-55K M8 7.8 60-8 60-8 60 60 22 1/0 1/0 50 50 25

*1 The cable size is that of the cable (HIV cable (600V class 2 vinyl-insulated cable) etc.) with continuous maximum permissible temperature of

Assumes that the surrounding air temperature is

*2 For the 45K or lower, the recommended cable size is that of the cable (THHW cable) with continuous maximum permissible temperature of

Assumes that the surrounding air temperature is For the 55K, the recommended cable size is that of the cable (THHN cable) with continuous maximum permissible temperature of the surrounding air temperature is (Selection example for use mainly in the United States.)

*3 For the 45K or lower, the recommended cable size is that of the cable (PVC cable) with continuous maximum permissible temperature of 70°C. Assumes

that the ambient temperature is 40°C or less and the wiring distance is 20m or less. For the 55K, the recommended cable size is that of the cable (XLPE cable) with continuous maximum permissible temperature of 90°C. Assumes that the ambient temperature is 40°C or less and wiring is performed in an enclosure. (Selection example for use mainly in Europe.)

40°C

50°C

or less and the wiring distance is 20m or less.

40°C

or less and the wiring distance is 20m or less.

or less and wiring is performed in an enclosure.

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

Main circuit terminal specifications

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.

CAUTION

· 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.

(2) Notes on earthing (grounding)

z Always earth (ground) the motor and inverter.

1)Purpose of earthing (grounding) Generally, an electrical apparatus has an earth (ground) terminal, which must be connected to the ground before use. An electrical circuit is usually insulated by an insulating material and encased. However, it is impossible to manufacture an insulating material that can shut off a leakage current completely, and actually, a slight current flow into the case. The purpose of earthing (grounding) the case of an electrical apparatus is to prevent operator from getting an electric shock from this leakage current when touching it. To avoid the influence of external noises, this earthing (grounding) is important to audio equipment, sensors, computers and other apparatuses that handle low-level signals or operate very fast.

2)Earthing (grounding) methods and earthing (grounding) work As described previously, earthing (grounding) is roughly classified into an electrical shock prevention type and a noise-affected malfunction prevention type. Therefore, these two types should be discriminated clearly, and the following work must be done to prevent the leakage current having the inverter's high frequency components from entering the malfunction prevention type earthing (grounding):

(a) If possible, use (l) independent earthing (grounding) in figure below for the inverter. If independent earthing

(grounding) is not available, use (ll) joint earthing (grounding) in the figure below which the inverter is connected with the other equipment at an earthing (grounding) point. The (lll) common earthing (grounding) as in the figure below, which inverter shares a common earth (ground) cable with the other equipment, must be avoided. A leakage current including many high frequency components flows in the earth (ground) cables of the inverter and inverter-driven motor. Therefore, use the independent earthing (grounding) and separated the earthing (grounding) cable of the inverter from equipments sensitive to EMI. In a high building, it may be effective to use the EMI prevention type earthing (grounding) connecting to an iron structure frame, and electric shock prevention type earthing (grounding) with the independent earthing (grounding) together.

(b) This inverter must be earthed (grounded). Earthing (Grounding) must conform to the requirements of national

and local safety regulations and electrical codes. (NEC section 250, IEC 536 class 1 and other applicable standards). Use a neutral-point earthed (grounded) power supply for 400V class inverter in compliance with EN standard.

indicated in the table on the previous page.

(d) The grounding point should be as near as possible to the inverter, and the ground wire length should be as

short as possible.

(e) Run the earth (ground) cable as far away as possible from the I/O wiring of equipment sensitive to noises and

run them in parallel in the minimum distance.

(ground) cable should be of not less than the size

WIRING

Inverter

(I) Independent earthing (grounding).......Best

Other

equipment

Inverter

(II) Joint earthing (grounding).......Good

Other

equipment

Inverter

(III) Joint earthing (grounding).......Not allowed

Other

equipment

Main circuit terminal specifications

(3) Total wiring length

The overall wiring length for the connection to a single motor or multiple motors should be within 500m (with unshielded wires). (The wiring length should be within 100m for the operation under vector control or when using shielded wires.)

Total wiring length

500m or less

300m

300m + 300m = 600m

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. Refer to page 42 for measures against deteriorated insulation.

CAUTION

· Especially with the long-distance wiring and the wiring with shielded wires, the inverter may be affected by a charging current caused by the stray capacitance from the wiring, leading to a malfunction of the overcurrent protective function or the fast response current limit function, or an inverter fault. It may also lead to a malfunction or fault of the equipment connected on the inverter output side. Stray capacitance from the wiring varies with its wiring conditions. The overall wiring length specified above is only a reference value. If the fast-response current limit function malfunctions, disable this function. (For Pr. 156 Stall prevention operation selection, refer

to Chapter 4 of the Instruction Manual (Applied).)

· For explanation of the surge voltage suppression filter (FR-ASF-H/FR-BMF-H) and sine wave filter (MT-BSL/BSC), refer to the manual of each option.

· Do not connect a surge voltage suppression filter (FR-ASF-H/FR-BMF-H) during the operation under vector control.

(4) Cable size of the control circuit power supply (terminal R1/L11, S1/L21)

· Terminal screw size: M4

· Cable size: 0.75mm

· Tightening torque: 1.5N·m

to 2mm

Main circuit terminal specifications

2.2.4 When connecting the control circuit and the main circuit separately to the power supply

<Connection diagram> When fault occurs, opening of the electromagnetic contactor (MC) on the

Remove the jumper

R/L1

S/L2

T/L3

R1/L11

S1/L21

Inverter

inverter power supply side results in power loss in the control circuit, disabling the fault output signal retention. Terminals R1/L11 and S1/L21 are provided to hold a fault signal. In this case, connect the power supply terminals R1/L11 and S1/L21 of the control circuit to the input side of the MC. Do not connect the power cable to incorrect terminals. Doing so may damage the inverter.

1)Remove the upper screws.

2)Remove the lower screws.

3)Pull the jumper toward you to remove. Connect the separate power supply

4) cable for the control circuit to the

upper terminals (R1/L11, S1/L21).

R1/ L11

T/L3

S/L2

R/L1

Main power supply

Power supply terminal block for the control circuit

S1/ L21

Power supply terminal block for the control circuit

FR-A721-5.5K to 15K FR-A741-5.5K to 15K

Power supply terminal block for the control circuit

R1/L11

FR-A721-18.5K to 55K FR-A741-18.5K to 55K

S1/L21

CAUTION

· Do not turn off the control power (terminals R1/L11 and S1/L21) with the main circuit power (R/L1, S/L2, T/L3) on. Doing so may damage the inverter. Make up a circuit which will switch off the main circuit power supply terminals R/L1, S/L2, T/L3 when the control circuit power supply terminals R1/L11, S1/L21 are switched off.

· Be sure to use the inverter with the jumpers across terminals R/L1 and R1/L11 and across terminals S/L2 and S1/L21 removed when supplying power from other sources. The inverter may be damaged if you do not remove the jumper.

· The voltage should be the same as that of the main control circuit when the control circuit power is supplied from other than the input side of the MC.

· When separate power is supplied from R1/L11 and S1/L21, the power capacity necessary for the 15K or lower is 90VA, for the

18.5K or higher is 100VA.

· If the main circuit power is switched OFF (for 0.1s or more) then ON again, the inverter resets and a fault output will not be held.

WIRING

Control circuit specifications

2.3 Control circuit specifications

2.3.1 Control circuit terminals

indicates that terminal functions can be selected using Pr. 178 to Pr. 196 (I/O terminal function selection) (Refer to Chapter 4 of

the Instruction Manual (Applied).)

(1) Input signals

Terminal

Symbol

Type

STF

STR

STOP

RH, RM, RL

JOG

MRS Output stop

RES Reset

Contact input

Ter minal

Name

Forward rotation start

Reverse rotation start

Start selfholding selection

Multi-speed selection

Jog mode selection

Pulse train input

Second function selection

Terminal 4 input selection

PTC input

Selection of automatic restart after instantaneous power failure

Contact input common (sink) (initial setting)

External transistor common (source)

24VDC power supply common

External transistor common (sink) (initial setting)

Contact input common (source)

24VDC power supply

Description

Turn ON the STF signal to start forward rotation and turn it OFF to stop.

Turn ON the STR signal to start reverse rotation and turn it OFF to stop.

Turn ON the STOP signal to self-hold the start signal. *2

Multi-speed can be selected according to the combination of RH, RM and RL signals.

Turn ON the JOG signal to select Jog operation (initial setting) and turn ON the start signal (STF or STR) to start Jog operation.

JOG terminal can be used as pulse train input terminal. To use as pulse train input terminal, the Pr. 291 setting needs to be changed.

(maximum input pulse: 100

Turn ON the RT signal to select second function. When the second function such as "second torque boost" and "second V/F (base frequency)" are set, turning on the RT signal selects these functions.

Turn ON the MRS signal (20ms or more) to stop the inverter output. Use to shut off the inverter output when stopping the motor by electromagnetic brake.

Used to reset fault output provided when fault occurs. 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.

Terminal 4 is valid only when the AU signal is turned ON. (The frequency setting signal can be set between 4 and 20mADC.) Turning the AU signal ON makes terminal 2 (voltage input) invalid.

AU terminal is used as PTC input terminal (thermal protection of the motor). When using it as PTC input terminal, set the AU/PTC switch to PTC.

When the CS signal is left ON, the inverter restarts automatically at power restoration. Note that restart setting is necessary for this operation. In the initial setting, a restart is disabled.

(Refer to Pr. 57 Restart coasting time in Chapter 4 of Instruction Manual (Applied).)

Common terminal for contact input terminal (sink logic) and terminal FM.

When connecting the transistor output (open collector output), such as a programmable controller, when source logic is selected, connect the external power supply common for transistor output to this terminal to prevent a malfunction caused by undesirable currents.

Common output terminal for 24VDC 0.1A power supply (PC terminal).

Isolated from terminals 5 and SE.

When connecting the transistor output (open collector output), such as a programmable controller, when sink logic is selected, connect the external power supply common for transistor output to this terminal to prevent a malfunction caused by undesirable currents.

Common terminal for contact input terminal (source logic).

Can be used as 24VDC 0.1A power supply.

pulses/s)

When the STF and STR signals are turned ON simultaneously, the stop command is given.

the

Rated

Specifications

Input resistance

4.7kΩ Voltage at opening: 21 to 27VDC Contacts at shortcircuited: 4 to 6mADC

Input resistance 2kΩ Contacts at shortcircuited: 8 to 13mADC

Input resistance

4.7kΩ Voltage at opening: 21 to 27VDC Contacts at shortcircuited: 4 to 6mADC

--------------- ----- —

Power supply voltage range 19.2 to 28.8VDC Permissible load current 100mA

Refer to

page

141

Control circuit specifications

Terminal

Symbol

Typ e

10E

Frequency setting

*1 Set Pr. 73, Pr. 267, and a voltage/current input switch correctly, then input an analog signal in accordance with the setting.

Applying a voltage signal with voltage/current input switch ON (current input is selected) or a current signal with switch OFF (voltage input is selected) could cause component damage of the inverter or analog circuit of signal output devices.

*2 Refer to Chapter 4 of

Terminal

Name

Frequency setting power supply

Frequency setting (voltage)

Frequency setting (current)

Frequency setting auxiliary

Frequency setting common

the Instruction Manual (Applied).

Description

When connecting the frequency setting potentiometer at an initial status, connect it to terminal 10. Change the input specifications of terminal 2 when connecting it to terminal 10E. (Refer to Pr. 73 Analog input selection in Chapter 4 of

the Instruction Manual (Applied).)

Inputting 0 to 5VDC (or 0 to 10V, 0 to 20mA) provides the maximum output frequency at 5V (10V, 20mA) and makes input and output proportional. Use Pr. 73 to switch from among input 0 to 5VDC (initial setting), 0 to 10VDC, and 0 to 20mA. Set the voltage/current input switch in the ON position to select current input (0 to 20mA).

Inputting 4 to 20mADC (or 0 to 5V, 0 to 10V) provides the maximum output frequency at 20mA makes input and output proportional. This input signal is valid only when the AU signal is ON (terminal 2 input is invalid). Use Pr. 267 to switch from among input 4 to 20mA (initial setting), 0 to 5VDC, and 0 to 10VDC. Set the voltage/current input switch in the OFF position to select voltage input (0 to 5V/0 to 10V).

(Refer to Chapter 4 of the Instruction Manual (Applied).) Use Pr. 858 to switch terminal functions.

Inputting 0 to ±5 VDC or 0 to ±10VDC adds this signal to terminal 2 or 4 frequency setting signal. Use Pr. 73 to switch between the input 0 to ±5VDC and 0 to ±10VDC (initial setting). Use Pr. 868 to switch terminal functions.

Common terminal for frequency setting signal (terminal 2, 1 or 4) and analog output terminal AM. Do not earth (ground).

Rated

Specifications

10VDC

Permissible load

current 10mA

5VDC

Permissible load

current 10mA Voltage input: Input resistance 10kΩ ± 1kΩ Maximum permissible voltage 20VDC Current input: Input resistance 245Ω ± 5Ω Maximum permissible current 30mA

Voltage/current input switch

switch1

switch2

Input resistance 10kΩ ± 1kΩ Maximum permissible voltage ± 20VDC

------------- ------- ------

Refer to

page

88, 96

90, 98

(2) Output signals

Terminal

Symbol

Type

A1, B1, C1

Relay

A2, B2, C2

Terminal

Name

Relay output 1 (alarm output)

Relay output 2 1 changeover contact output *2

Description

1 changeover contact output indicates that the inverter protective function has activated and the output stopped. Fault: No conduction between B and C (conduction between A and C) Normal: Conduction between B and C (No conduction between A and C)

Rated

Specifications

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

Refer to

page

WIRING

Control circuit specifications

Terminal

Symbol

Typ e

RUN

Open collector

IPF

Pulse

Analog

Terminal

Name

Inverter running

Up to frequency

Overload warning

Instantaneous power failure

Frequency detection

Open collector output common

For meter

NPN open collector output

Analog signal output

Description

Rated

Specifications

Refer to

page

Switched low when the inverter output frequency is equal to or higher than the starting frequency (initial value 0.5Hz). Switched high during stop or DC injection brake operation.

Switched low when the output frequency reaches within the range of ±10% (initial value) of the set frequency. Switched high during acceleration/ deceleration and at a stop. *1

Switched low when stall prevention is activated by the stall prevention function. Switched high when stall prevention is cancelled.

Switched low when an instantaneous power failure and under voltage protections are activated.

Switched low when the inverter output frequency is equal to or higher than the

Alarm code (4bit) output

Permissible load 24VDC (27VDC maximum) 0.1A (A voltage drop is

2.8V maximum when the signal is on.)

*1 Low is when the

open collector output transistor is ON (conducts). High is when the transistor is OFF (does not conduct).

preset detected frequency and high when less than the preset detected frequency.

C o m m o n t e r m i n a l f o r t e r m i n a l s R U N , S U , O L , I P F, F U -------------------- -----

Permissible load current 2mA 1440pulses/s at 60Hz

Maximum output pulse: 50kpulses/s Permissible load current : 80mA

Output signal 0 to 10VDC Permissible load current 1mA (load impedance

Select one e.g. output frequency from monitor items. Not output during inverter reset. The output signal is proportional to the magnitude of the corresponding monitoring item. To set a full-scale value for monitoring the output frequency and the output current, set Pr. 56 and Pr.158.

Output item: Output frequency (initial setting)

Signals can be output from the open collector terminals by setting Pr. 291.

Output item: Output frequency (initial setting)

10kΩ or more) Resolution 8 bit

*2 Refer to Chapter 4 of the Instruction Manual (Applied).

(3) Communication

Type

RS-485

USB

Terminal

Symbol

--------------- -----

TXD+

TXD-

RXD+

RXD-

RS-485 terminals

--------------- -----

Terminal

Name

PU connector

Inverter transmission terminal

Inverter reception terminal

Earth (Ground)

USB connector

With the PU connector, communication can be made through RS-485. (for connection on a 1:1 basis only) . Conforming standard : EIA-485 (RS-485) . Transmission format : Multidrop link . Communication speed : 4800 to 38400bps . Overall length : 500m

With the RS-485 terminals, communication can be made through RS-485. Conforming standard : EIA-485 (RS-485) Transmission format : Multidrop link Communication speed : 300 to 38400bps Overall length : 500m

The FR Configurator can be used by connecting the inverter to the personal computer through USB. Interface:Conforms to USB1.1 Transmission speed:12Mbps Connector:USB B connector (B receptacle)

Description

Refer to

page

Control circuit specifications

2.3.2 Changing the control logic

The input signals are set to sink logic (SINK) when shipped from the factory. To change the control logic, the jumper connector on the back of the control circuit terminal block must be moved to the other position. (The output signals may be used in either the sink or source logic independently of the jumper connector position.)

1) Loosen the two installation screws in both ends of the control circuit terminal block. (These screws cannot be removed.) Pull down the terminal block from behind the control circuit terminals.

2) Change the jumper connector set to the sink logic (SINK) on the rear panel of the control circuit terminal block to source logic (SOURCE).

Jumper connector

3) Using care not to bend the pins of the inverter's control circuit connector, reinstall the control circuit terminal block and fix it with the mounting screws.

CAUTION

1. Make sure that the control circuit connector is fitted correctly.

2. While power is ON, never disconnect the control circuit terminal block.

WIRING

+ 229 hidden pages

Mitsubishi Electronics FR-A701 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

This section is specifically about safety matters

1 OUTLINE

1.1 Product checking and parts identification

1.2 Inverter and peripheral devices

1.2.1 Peripheral devices

1.3 Method of removal and reinstallation of the front cover

1.4 Installation of the inverter and enclosure design

1.4.1 Inverter installation environment

1.4.2 Cooling system types for inverter enclosure

1.4.3 Inverter placement

2 WIRING

2.1 Terminal connection diagram

2.2 Main circuit terminal specifications

2.2.1 Specification of main circuit terminal

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

2.2.3 Cables and wiring length

2.2.4 When connecting the control circuit and the main circuit separately to the power supply

2.3 Control circuit specifications

2.3.1 Control circuit terminals

2.3.2 Changing the control logic