Mitsubishi FR-A740-00083-EC, FR-A700, FR-A740-00126-EC, FR-A740-00170-EC, FR-A740-00250-EC Instruction Manual

...

FR-A700 INSTRUCTION MANUAL

INVERTER

PRECAUTIONS FOR USE

OF THE INVERTER

PARAMETERS

PROTECTIVE FUNCTIONS

PRECAUTIONS FOR

MAINTENANCE AND INSPECTION

OUTLINE

WIRING

FR-A740-00023 to 12120-EC

Thank you for choosing this Mitsubishi Inverter. This Instruction Manual provides instructions for advanced use of the FR-A700 series inverters. Incorrect handling might cause an unexpected fault. Before using the inverter, always read this instruction manual and the Installation Guideline [IB-0600256ENG] packed with the product carefully to use the equipment to its optimum.

This section is specifically about safety matters

Do not attempt to install, operate, maintain or inspect the inverter until you have read through instruction manual and appended documents carefully and can use the equipment correctly. Do not use the inverter 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

Note that even the level may lead to a serious consequence according to conditions. Please follow strictly the instructions of both levels

because they are important to personnel safety.

1. Electric Shock Prevention

• 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 high-voltage 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 access the charged inverter circuits and get an electric shock.

• Before starting wiring or inspection, check to make sure that the operation panel

indicator is off, 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 codes. (NEC section 250, IEC 536 class 1 and other applicable standards)

• Any person who is involved in the wiring or inspection of this equipment should

be fully competent to do the work.

• Always install the inverter before wiring. Otherwise, you ma y get an electric shock

or be injured.

• Perform setting dial and key operations with dry hands to prevent an electric

shock. Otherwise you may get 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 replace the cooling fan while power is on. It is dangerous to replace the

cooling fan while power is on.

•

Do not touch the printed circuit board with wet hands. 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

• Install the inverter on an incombustible wall without holes, etc.

Mounting it to or near combustible material can cause a fire.

• If the inverter has become faulty, switch off the inverter power.

A continuous flow of large current could cause a fire.

• When using a brake resistor, make up a sequence that will turn off power when

an alarm signal is output. Otherwise, the brake resistor may excessively overheat due to damage of the brake transistor and such, causing a fire.

•

Do not connect the resistor directly to the DC terminals P/+ and N/-. This cou ld cause a fire.

3. Injury Prevention

• Apply only the voltage specified in the instruction manual to each terminal.

Otherwise, burst, damage, etc. may occur.

• Ensure that the cables are connected to the correct terminals. Otherwise, burst,

damage, etc. may occur.

• Always make sure that polarity is correct to prevent damage, etc. Otherwise,

burst, damage, etc. may occur.

• While power is on or for some time after power-off, do not touch the inverter as it

is hot and you may get burnt.

4. Additional Instructions

Also note the following points to prevent an accidental failure, injury, electric shock, etc.

(1) Transportation and installation

• When carrying products, use correct lifting gear to prevent injury.

• Do not stack the inverter boxes higher than the number recommended.

• Ensure that installation position and material can withstand the weight of the

inverter. Install according to the information in the instruction manual.

• Do not install or operate the inverter if it is damaged or has parts missing. This can

result in breakdowns.

• 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.

• Check the inverter mounting orientation is correct.

• Prevent other conductive bodies such as screws and metal fragments or other

flammable substance such as oil from entering the inverter.

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

• Use the inverter under the following environmental conditions. Otherwise, the

inverter may be damaged.

Ambient temperature

Ambient humidity 90% RH or less (non-condensing) Storage temperature -20°C to +65°C *1

Atmosphere

Environment

Altitude, vibration

*1 Temperature applicable for a short time, e.g. in transit. *2 2.9m/s2 or less for the 04320 or more.

Assumes that incorrect handling may cause hazardous conditions, resulting in death or severe injury.

Assumes that incorrect handling may cause hazardous conditions, resulting in medium or slight injury, or may cause physical damage only.

CAUTION

WARNING

CAUTION

LD, ND (initial setting), HD SLD -10°C to +40°C (non-freezing)

-10°C to +50°C (non-freezing)

Indoors (free from corrosive gas, flammable gas, oil mist, dust and dirt) Maximum 1000m above sea level for standard operation. After that derate by 3% for every extra

500m up to 2500m (92%) 5.9m/s2 or less *2

(2) Wiring

• Do not install a power factor correction capacitor or surge suppressor/radio

noise filter (capacitor type filter) on the inverter output side.

• The connection orientation of the output cables U, V, W to the motor will affect

the direction of rotation of the motor.

CAUTION

(3) Test operation and adjustment

• Before starting operation, confirm and adjust the parameters. A failure to do so

may cause some machines to make unexpected motions.

(4) Operation

• When you have chosen the retry function, stay away from the equipment as it

will restart suddenly after an alarm stop.

• Since the key is valid only when functions are set (refer to page 295),

provide a circuit and switch separately to make an emergency stop (power off, mechanical brake operation for emergency stop, etc).

• Make sure that the start signal is off before resetting the inverter alarm. A failure

to do so may restart the motor suddenly.

• The load used should be a three-phase induction motor only. Connection of any

other electrical equipment to the inverter output may damage the inverter as well as equipment.

• 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 run also at a low speed when the speed limit value = 0 with a start command input. Perform pre-excitation after making sure that there will be no problem in safety if the motor runs.

• 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 inverter.

• The electronic thermal relay function does not guarantee protection of the motor

from overheating.

• Do not use a magnetic contactor on the inverter input for frequent starting/

stopping of the inverter.

• Use a noise filter to reduce the effect of electromagnetic interference. Otherwise

nearby electronic equipment may be affected.

• Take measures to suppress harmonics. Otherwise power supply harmonics from

the inverter may heat/damage the power factor correction capacitor and generator.

• When a 400V class motor is inverter-driven, please use an insulation-enhanced

motor or measures taken to suppress surge voltages. Surge voltages attributable to the wiring constants may occur at the motor terminals, deteriorating the insulation of the motor.

• When parameter clear or all clear is performed, reset the required parameters

before starting operations. Each parameter returns to the initial value.

• The inverter can be easily set for high-speed operation. Before changing its

setting, fully examine the performances of the motor and machine.

• In addition to the inverter's holding function, install a holding device to ensure

safety.

• Before running an inverter which had been stored for a long period, always

perform inspection and test operation.

• For prevention of damage due to static electricity, touch nearby metal before

touching this product to eliminate static electricity from your body.

(5) Emergency stop

• Provide a safety backup such as an emergency brake which will prevent the

machine and equipment from hazardous conditions if the inverter fails.

• 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.

• When the protective function is activated, take the corresponding corrective

action, then reset the inverter, and resume operation.

CAUTION

WARNING

CAUTION

(6) Maintenance, inspection and parts replacement

• Do not carry out a megger (insulation resistance) test on the control circuit of the

inverter.

CAUTION

(7) Disposing of the inverter

• Treat as industrial waste.

CAUTION

General instructions

Many of the diagrams and drawings in this instruction manual show the inverter without a cover, or partially open. Never run the inverter in this status. Always replace the cover and follow this instruction manual when operating the inverter.

A-1

CONTENTS

1 OUTLINE 1

1.1 Product checking and parts identification ........................................................ 2

1.2 Inverter and peripheral devices.......................................................................... 3

1.2.1 Peripheral devices ..................................................................................................................... 4

1.3 Method of removal and reinstallation of the front cover.................................. 5

1.4 Installation of the inverter and enclosure design ............................................. 7

1.4.1 Inverter installation environment................................................................................................ 7

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

1.4.3 Inverter placement ..................................................................................................................... 9

2 WIRING 11

2.1 Wiring.................................................................................................................. 12

2.1.1 Terminal connection diagram .................................................................................................. 12

2.1.2 EMC filter................................................................................................................................. 13

2.2 Main circuit terminal specifications .................................................................14

2.2.1 Specification of main circuit terminal ....................................................................................... 14

2.2.2 Terminal arrangement of the main circuit terminal, power supply and the motor wiring. ........ 15

2.2.3 Cables and wiring length ......................................................................................................... 18

2.2.4 When connecting the control circuit and the main circuit separately

to the power supply (separate power) ..................................................................................... 21

2.3 Control circuit specifications ...........................................................................23

2.3.1 Control circuit terminals ........................................................................................................... 23

2.3.2 Changing the control logic ....................................................................................................... 26

2.3.3 Control circuit terminal layout .................................................................................................. 28

2.3.4 Wiring instructions ................................................................................................................... 29

2.3.5 When connecting the operation panel using a connection cable ............................................ 30

2.3.6 RS-485 terminal block ............................................................................................................. 30

2.3.7 Communication operation........................................................................................................ 30

2.4 Connection of motor with encoder (vector control) .......................................31

2.5 Connection of stand-alone option units .......................................................... 37

2.5.1 Connection of the dedicated external brake resistor (FR-ABR)

(00620 or less)......................................................................................................................... 37

2.5.2 Connection of the brake unit (FR-BU2) ................................................................................... 40

2.5.3 Connection of the brake unit (FR-BU/MT-BU5)....................................................................... 42

2.5.4 Connection of the brake unit (BU type) ................................................................................... 44

2.5.5 Connection of the high power factor converter (FR-HC/MT-HC)............................................. 44

2.5.6 Connection of the power regeneration common converter (FR-CV)

(01800 or less)......................................................................................................................... 46

2.5.7 Connection of power regeneration converter (MT-RC)

(02160 or more) ....................................................................................................................... 47

2.5.8 Connection of the power factor improving DC reactor (FR-HEL) ............................................ 47

3 PRECAUTIONS FOR USE OF THE INVERTER 49

3.1 Noise and leakage currents .............................................................................. 50

3.1.1 Leakage currents and countermeasures ................................................................................. 50

3.1.2 Inverter-generated noises and their reduction techniques ...................................................... 52

3.1.3 Power supply harmonics ......................................................................................................... 54

3.2 Installation of a reactor ..................................................................................... 55

3.3 Power-off and magnetic contactor (MC) .......................................................... 56

3.4 Inverter-driven 400V class motor .....................................................................57

3.5 Precautions for use of the inverter ..................................................................58

4 PARAMETERS 61

4.1 Operation panel (FR-DU07) ...............................................................................62

4.1.1 Parts of the operation panel (FR-DU07) .................................................................................. 62

4.1.2 Basic operation (factory setting) .............................................................................................. 63

4.1.3 Change the parameter setting value ....................................................................................... 64

4.1.4 Setting dial push ...................................................................................................................... 64

Content

4.2 Parameter List .................................................................................................... 65

4.2.1 Parameter list .......................................................................................................................... 65

4.3 Control mode..................................................................................................... 83

4.3.1 What is vector control? ........................................................................................................... 84

4.3.2 Change the control method (Pr. 80, Pr. 81, Pr. 451, Pr. 800) ................................................ 87

4.4 Speed control by real sensorless vector control, vector control................. 91

4.4.1 Setting procedure of real sensorless vector control (speed control) ..................................... 92

4.4.2 Setting procedure of vector control (speed control) ............................................................... 93

4.4.3 Torque limit level setting for speed control

(Pr. 22, Pr. 803, Pr. 810 to Pr. 817, Pr. 858, Pr. 868, Pr. 874) ............................................. 94

4.4.4 To perform high accuracy/fast response operation (gain adjustment of real sensorless vector control and vector control) (Pr. 818 to Pr. 821, Pr. 830,

Pr. 831, Pr. 880) .................................................................................................................. 99

4.4.5 Speed feed forward control, model adaptive speed control (Pr. 828, Pr. 877 to Pr. 881) ... 106

4.4.6 Torque biases (Pr. 840 to Pr. 848) ...................................................................................... 108

4.4.7 Prevent the motor from overrunning (Pr. 285, Pr. 853, Pr. 873) .......................................... 111

4.4.8 Notch filter (Pr. 862, Pr. 863) ............................................................................................... 112

4.5 Torque control by real sensorless vector control, vector control ............. 113

4.5.1 Torque control ...................................................................................................................... 113

4.5.2 Setting procedure of real sensorless vector control (torque control) ................................... 115

4.5.3 Setting procedure of vector control (torque control) ............................................................ 116

4.5.4 Torque command (Pr. 803 to Pr. 806) .................................................................................. 117

4.5.5 Speed limit (Pr. 807 to Pr. 809) ........................................................................................... 119

4.5.6 Gain adjustment of torque control (Pr. 824, Pr. 825, Pr. 834, Pr. 835) ................................ 122

4.6 Position control by vector control ................................................................ 124

4.6.1 Position control .................................................................................................................... 124

4.6.2 Conditional position feed function by contact input (Pr. 419, Pr. 464 to Pr. 494) ................ 126

4.6.3 Position control (Pr. 419, Pr. 428 to Pr. 430) by inverter pulse train input ........................... 129

4.6.4 Setting of the electronic gear (Pr. 420, Pr. 421, Pr. 424) .................................................... 131

4.6.5 Setting of positioning adjustment parameter (Pr. 426, Pr. 427) ........................................... 132

4.6.6 Gain adjustment of position control (Pr. 422, Pr. 423, Pr. 425) ........................................... 133

4.6.7 Trouble shooting for when position control is not exercised normally ................................. 135

4.7 Adjustment of real sensorless vector control, vector control.................... 136

4.7.1 Speed detection filter and torque detection filter (Pr. 823, Pr. 827, Pr. 833, Pr. 837) ........ 136

4.7.2 Excitation ratio (Pr. 854) ..................................................................................................... 137

4.8 Adjust the output torque of the motor (current) .......................................... 138

4.8.1 Manual torque boost (Pr. 0, Pr. 46, Pr. 112)......................................................................... 138

4.8.2 Advanced magnetic flux vector control (Pr. 71, Pr. 80, Pr. 81, Pr. 89, Pr. 450,

Pr. 451, Pr. 453, Pr. 454, Pr. 569, Pr. 800) ......................................................................... 140

4.8.3 Slip compensation (Pr. 245 to Pr. 247)................................................................................. 143

4.8.4 Stall prevention operation (Pr. 22, Pr. 23, Pr. 48, Pr. 49, Pr. 66, Pr. 114, Pr. 115,

Pr. 148, Pr. 149, Pr. 154, Pr. 156, Pr. 157, Pr. 858, Pr. 868) ............................................... 144

4.8.5 Multiple rating (Pr. 570) ........................................................................................................ 149

4.9 Limit the output frequency............................................................................. 151

4.9.1 Maximum/minimum frequency (Pr. 1, Pr. 2, Pr. 18) ............................................................. 151

4.9.2 Avoid mechanical resonance points (Frequency jump) (Pr. 31 to Pr. 36) ............................ 152

4.10 Set V/F pattern................................................................................................. 153

4.10.1 Base frequency, voltage (Pr. 3, Pr. 19, Pr. 47, Pr. 113) ....................................................... 153

4.10.2 Load pattern selection (Pr. 14) ............................................................................................ 155

4.10.3 Elevator mode (automatic acceleration/deceleration) (Pr. 61, Pr. 64, Pr. 292) ................... 157

4.10.4 Adjustable 5 points V/F (Pr. 71, Pr. 100 to Pr. 109) ............................................................. 159

4.11 Frequency setting by external terminals ...................................................... 160

4.11.1 Multi-speed setting operation (Pr. 4 to Pr. 6, Pr. 24 to Pr. 27, Pr. 232 to Pr. 239) ............... 160

4.11.2 Jog operation (Pr. 15, Pr. 16) ............................................................................................... 162

III

4.11.3 Input compensation of multi-speed and remote setting (Pr. 28) ........................................... 164

4.11.4 Remote setting function (Pr. 59) ........................................................................................... 164

4.12 Setting of acceleration/deceleration time and

acceleration/deceleration pattern.................................................................. 167

4.12.1 Setting of the acceleration and deceleration time (Pr. 7, Pr. 8, Pr. 20, Pr. 21,

Pr. 44, Pr. 45, Pr. 110, Pr. 111) ............................................................................................ 167

4.12.2 Starting frequency and start-time hold function (Pr. 13, Pr. 571) ......................................... 169

4.12.3 Acceleration/deceleration pattern (Pr. 29, Pr. 140 to Pr. 143, Pr. 380 to Pr. 383,

Pr. 516 to Pr. 519) ................................................................................................................ 170

4.12.4 Shortest acceleraiton/deceleration and optimum acceleration/deceleration

(automatic acceleration/deceleration) (Pr. 61 to Pr. 63, Pr. 292, Pr. 293) ............................ 173

4.13 Selection and protection of a motor ............................................................. 175

4.13.1 Motor protection from overheat (Electronic thermal relay function) (Pr. 9, Pr. 51) ............... 175

4.13.2 Applied motor (Pr. 71, Pr. 450) ............................................................................................. 179

4.13.3 Offline auto tuning (Pr. 71, Pr. 80 to Pr. 84, Pr. 90 to Pr. 94, Pr. 96, Pr. 450,

Pr. 453 to Pr. 463, Pr. 684, Pr. 859, Pr. 860) ................................................................... 181

4.13.4 Online auto tuning (Pr. 95, Pr. 574) .................................................................................. 191

Content

4.14 Motor brake and stop operation.................................................................... 194

4.14.1 DC injection brake and zero speed control, servo lock (LX signal, X13 signal,

Pr. 10 to Pr. 12, Pr. 802, Pr. 850) ......................................................................................... 194

4.14.2 Selection of regenerative brake and DC feeding (Pr. 30, Pr. 70) ......................................... 198

4.14.3 Stop selection (Pr. 250) ........................................................................................................ 204

4.14.4 Stop-on contact control function (Pr. 6, Pr. 48, Pr. 270, Pr. 275, Pr. 276) ........................... 205

4.14.5 Brake sequence function (Pr. 278 to Pr. 285, Pr. 292) ......................................................... 208

4.14.6 Orientation control (Pr. 350 to Pr. 366, Pr. 369, Pr. 393, Pr. 396 to Pr. 399) .................... 211

4.15 Function assignment of external terminal and control ............................... 222

4.15.1 Input terminal function selection (Pr. 178 to Pr. 189) ........................................................... 222

4.15.2 Inverter output shutoff signal (MRS signal, Pr. 17)............................................................... 225

4.15.3 Condition selection of function validity by the second function selection signal (RT) and

third function selection signal (X9) (RT signal, X9 signal, Pr. 155)....................................... 226

4.15.4 Start signal operation selection (STF, STR, STOP signal, Pr. 250) ..................................... 227

4.15.5 Magnetic flux decay output shutoff signal (X74 signal) ........................................................ 229

4.15.6 Output terminal function selection (Pr. 190 to Pr. 196)......................................................... 230

4.15.7 Detection of output frequency (SU, FU, FU2 , FU3, FB, FB2, FB3, LS signal,

Pr. 41 to Pr. 43, Pr. 50, Pr. 116, Pr. 865) ............................................................................. 237

4.15.8 Output current detection function

(Y12 signal, Y13 signal, Pr. 150 to Pr. 153, Pr. 166, Pr. 167) .............................................. 239

4.15.9 Detection of output torque (TU signal, Pr. 864) .................................................................... 240

4.15.10 Remote output function (REM signal, Pr. 495 to Pr. 497) .................................................... 241

4.16 Monitor display and monitor output signal .................................................. 242

4.16.1 Speed display and speed setting (Pr. 37, Pr. 144, Pr. 505, Pr. 811) .................................... 242

4.16.2 DU/PU, CA, AM terminal monitor display selection (Pr. 52, Pr. 54, Pr. 158, Pr. 170,

Pr. 171, Pr. 268, Pr. 563, Pr. 564, Pr. 891) .......................................................................... 244

4.16.3 Reference of the terminal CA (analog current output) and AM (analog voltage

output) (Pr. 55, Pr. 56, Pr. 866, Pr. 867, Pr. 869) ................................................................. 249

4.16.4 Terminal CA, AM calibration (Calibration parameter C0 (Pr. 900), C1 (Pr. 901),

C8 (Pr. 930) to C11 (Pr. 931)) .............................................................................................. 251

4.17 Operation selection at power failure and instantaneous power failure..... 254

4.17.1 Automatic restart after instantaneous power failure/flying start

(Pr. 57, Pr. 58, Pr. 162 to Pr. 165, Pr. 299, Pr. 611)............................................................. 254

4.17.2 Power failure-time deceleration-to-stop function (Pr. 261 to Pr. 266, Pr. 294 ) .................... 258

4.18 Operation setting at alarm occurrence ......................................................... 261

4.18.1 Retry function (Pr. 65, Pr. 67 to Pr. 69) ................................................................................ 261

4.18.2 Alarm code output selection (Pr. 76) .................................................................................... 263

4.18.3 Input/output phase failure protection selection (Pr. 251, Pr. 872) ........................................ 264

4.18.4 Overspeed detection (Pr. 374) ............................................................................................. 264

4.18.5 Encoder signal loss detection (Pr. 376) ............................................................................... 264

4.18.6 Fault definition (Pr. 875) ....................................................................................................... 265

4.19 Energy saving operation and energy saving monitor ................................. 266

4.19.1 Energy saving control (Pr. 60) ............................................................................................. 266

4.19.2 Energy saving monitor (Pr. 891 to Pr. 899) .......................................................................... 267

4.20 Motor noise, noise reduction......................................................................... 272

4.20.1 PWM carrier frequency and Soft-PWM control (Pr. 72, Pr. 240, Pr. 260) ............................ 272

4.21 Frequency/torque setting by analog input (terminal 1, 2, 4)....................... 274

4.21.1 Function assignment of analog input terminal (Pr. 858, Pr. 868) ......................................... 274

4.21.2 Analog input selection (Pr. 73, Pr. 267)................................................................................ 275

4.21.3 Analog input compensation (Pr. 73, Pr. 242, Pr. 243, Pr. 252, Pr. 253)............................... 278

4.21.4 Response level of analog input and noise elimination

(Pr. 74, Pr. 822, Pr. 826, Pr. 832, Pr. 836, Pr. 849).............................................................. 280

4.21.5 Bias and gain of frequency setting voltage (current)

(Pr. 125, Pr. 126, Pr. 241, C2(Pr. 902) to C7(Pr. 905), C12(Pr. 917) to C15(Pr. 918)) ........ 282

4.21.6 Bias and gain of torque (magnetic flux) setting voltage (current)

(Pr. 241, C16(Pr. 919) to C19(Pr. 920), C38 (Pr. 932) to C41 (Pr. 933)) ........................... 288

4.21.7 4mA input check of current input (Pr. 573) ........................................................................... 293

4.22 Misoperation prevention and parameter setting restriction ....................... 295

4.22.1 Reset selection/disconnected PU detection/PU stop selection (Pr. 75) ............................... 295

4.22.2 Parameter write selection (Pr. 77) ........................................................................................ 298

4.22.3 Reverse rotation prevention selection (Pr. 78) ..................................................................... 299

4.22.4 Display of applied parameters and user group function (Pr. 160, Pr. 172 to Pr. 174) .......... 299

4.23 Selection of operation mode and operation location .................................. 301

4.23.1 Operation mode selection (Pr. 79)........................................................................................ 301

4.23.2 Operation mode at power on (Pr. 79, Pr. 340) ..................................................................... 309

4.23.3 Operation command source and speed command source during

communication operation (Pr. 338, Pr. 339, Pr. 550, Pr. 551).............................................. 310

4.24 Communication operation and setting ......................................................... 315

4.24.1 Wiring and configuration of PU connector ............................................................................ 315

4.24.2 Wiring and arrangement of RS-485 terminals ...................................................................... 317

4.24.3 Initial settings and specifications of RS-485 communication

(Pr. 117 to Pr. 124, Pr. 331 to Pr. 337, Pr. 341, Pr. 549)...................................................... 320

4.24.4 Communication EEPROM write selection (Pr. 342) ............................................................. 321

4.24.5 Mitsubishi inverter protocol (computer link communication) ................................................. 322

4.24.6 Modbus-RTU communication specifications (Pr. 331, Pr. 332, Pr. 334, Pr. 343,

Pr. 539, Pr. 549) ................................................................................................................... 333

4.24.7 Operation by PLC function (Pr. 414 to Pr. 417, Pr. 498, Pr. 506 to Pr. 515) ........................ 346

4.24.8 USB communication (Pr. 547, Pr. 548) ................................................................................ 347

4.25 Special operation and frequency control ..................................................... 348

4.25.1 PID control (Pr. 127 to Pr. 134, Pr. 575 to Pr. 577) .............................................................. 348

4.25.2 Bypass-inverter switchover function (Pr. 57, Pr. 58, Pr. 135 to Pr. 139, Pr. 159) ................. 356

4.25.3 Load torque high speed frequency control (Pr. 4, Pr. 5, Pr. 270 to Pr. 274) ........................ 361

4.25.4 Droop control (Pr. 286 to Pr. 288) ..................................................................................... 363

4.25.5 Frequency setting by pulse train input (Pr. 291, Pr. 384 to Pr. 386)..................................... 365

Content

4.25.6 Encoder feedback control (Pr. 144, Pr. 285, Pr. 359, Pr. 367 to Pr. 369) ........................... 367

4.25.7 Traverse function (Pr. 592 to Pr. 597) .................................................................................. 369

4.25.8 Regeneration avoidance function (Pr. 665, Pr. 882 to Pr. 886) ............................................ 371

4.26 Useful functions.............................................................................................. 373

4.26.1 Cooling fan operation selection (Pr. 244) ............................................................................. 373

4.26.2 Display of the life of the inverter parts (Pr. 255 to Pr. 259)................................................... 374

4.26.3 Maintenance timer alarm (Pr. 503, Pr. 504) ......................................................................... 377

4.26.4 Current average value monitor signal (Pr. 555 to Pr. 557) ................................................... 378

4.26.5 Free parameter (Pr. 888, Pr. 889) ........................................................................................ 380

4.27 Setting of the parameter unit and operation panel...................................... 381

4.27.1 PU display language selection (Pr. 145) .............................................................................. 381

4.27.2 Operation panel frequency setting/key lock operation selection (Pr. 161) ........................... 381

4.27.3 Buzzer control (Pr. 990)........................................................................................................ 383

4.27.4 PU contrast adjustment (Pr. 991) ......................................................................................... 383

4.28 Parameter clear ............................................................................................... 384

4.29 All parameter clear.......................................................................................... 385

4.30 Parameter copy and parameter verification ................................................. 386

4.30.1 Parameter copy .................................................................................................................... 386

4.30.2 Parameter verification........................................................................................................... 387

4.31 Check and clear of the alarm history ............................................................ 388

5 PROTECTIVE FUNCTIONS 391

5.1 Reset method of protective function ............................................................. 392

5.2 List of alarm display ........................................................................................393

5.3 Causes and corrective actions .......................................................................394

5.4 Correspondences between digital and actual characters ...........................407

5.5 Check first when you have troubles .............................................................. 408

5.5.1 Motor will not start ................................................................................................................. 408

5.5.2 Motor generates abnormal noise ........................................................................................... 408

5.5.3 Motor generates heat abnormally .......................................................................................... 409

5.5.4 Motor rotates in opposite direction ........................................................................................409

5.5.5 Speed greatly differs from the setting .................................................................................... 409

5.5.6 Acceleration/deceleration is not smooth................................................................................ 409

5.5.7 Motor current is large............................................................................................................. 409

5.5.8 Speed does not increase ....................................................................................................... 409

5.5.9 Speed varies during operation............................................................................................... 410

5.5.10 Operation mode is not changed properly .............................................................................. 410

5.5.11 Operation panel (FR-DU07) display is not operating............................................................. 410

5.5.12 POWER lamp is not lit ........................................................................................................... 410

5.5.13 Parameter write cannot be performed ................................................................................... 410

6 PRECAUTIONS FOR MAINTENANCE AND INSPECTION 411

6.1 Inspection item................................................................................................. 412

6.1.1 Daily inspection ..................................................................................................................... 412

6.1.2 Periodic inspection ................................................................................................................ 412

6.1.3 Daily and periodic inspection ................................................................................................. 413

6.1.4 Display of the life of the inverter parts ................................................................................... 414

6.1.5 Checking the inverter and converter modules ....................................................................... 414

6.1.6 Cleaning ................................................................................................................................ 415

6.1.7 Replacement of parts ............................................................................................................ 415

6.1.8 Inverter replacement.............................................................................................................. 419

6.2 Measurement of main circuit voltages, currents and powers ..................... 420

6.2.1 Measurement of powers ........................................................................................................ 422

VII

6.2.2 Measurement of voltages and use of PT ............................................................................... 422

6.2.3 Measurement of currents....................................................................................................... 423

6.2.4 Use of CT and transducer ..................................................................................................... 423

6.2.5 Measurement of inverter input power factor .......................................................................... 423

6.2.6 Measurement of converter output voltage (across terminals P/+ - N/-) ................................. 424

6.2.7 Insulation resistance test using megger ................................................................................ 424

6.2.8 Pressure test ......................................................................................................................... 424

7 SPECIFICATIONS 425

7.1 Rating................................................................................................................ 426

7.1.1 Inverter rating ........................................................................................................................ 426

7.2 Common specifications ..................................................................................427

7.3 Outline dimension drawings........................................................................... 428

7.3.1 Inverter outline dimension drawings ...................................................................................... 428

7.4 Installation of the heatsink portion outside the enclosure for use ............. 437

7.4.1 When using a heatsink protrusion attachment (FR-A7CN) ................................................... 437

7.4.2 Protrusion of heatsink of the FR-A740-04320 or more.......................................................... 437

Content

APPENDICES 441

Appendix 1 For customers who have replaced the older model with this

inverter ................................................................................................ 442

Appendix 1-1 Replacement of the FR-A500 series ......................................................................... 442

Appendix 1-2 Replacement of the FR-A200 <EXCELENT> series ................................................. 443

Appendix 2 Control mode-based parameter (function) correspondence

table and instruction code list .......................................................... 444

Appendix 3 SERIAL number check....................................................................... 462

VIII

1 OUTLINE

This chapter describes the basic "OUTLINE" for use of this product. Always read the instructions before using the equipment

1.1 Product checking and parts identification................ 2

1.2 Inverter and peripheral devices...............................3

1.3 Method of removal and reinstallation of the front

cover ....................................................................... 5

1.4 Installation of the inverter and enclosure design ..... 7

DU ..........................................Operation panel (FR-DU07)

PU................................................Operation panel (FR-DU07) and parameter unit (FR-PU04/

FR-PU07)

Inverter ...................................Mitsubishi inverter FR-A700 series

FR-A700 .................................Mitsubishi inverter FR-A700 series

Pr. ...........................................Parameter Number

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.

Mitsubishi standard motor ......SF-JR

Mitsubishi constant-torque motor

Vector dedicated motor...........SF-V5RU

•L

ONWORKS

countries.

• DeviceNet

Inc.).

• Other company and product names herein are the trademarks and registered

trademarks of their respective owners.

is a registered trademark of Echelon Corporation in the U.S.A and other

is a registered trademark of ODVA (Open DeviceNet Vender Association,

.SF-HRCA

Product checking and parts identification

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 Type

FR --A740

Symbol

A740

Voltage Class Three-phase

400V class

00126

Symbol

00023

12120

RS-485 terminals

(Refer to page 317)

Connector for plug-in option connection

(Refer to the instruction manual of options.)

Voltage/current input switch

(Refer to page 12, 275.)

AU/PTC switchover switch

(Refer to page 178.)

EMC filter ON/OFF connector

(Refer to page 13)

Operation panel (FR-DU07)

(Refer to page 62)

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).

Front cover

(Refer to page 5)

Capacity plate

USB connector

FR-A740-00126-EC

Inverter type

Serial number

- EC

Type number

Displays the rated current

(Refer to page 347)

Control circuit terminal block

(Refer to page 23)

Main circuit terminal block

(Refer to page 14)

Combed shaped wiring cover

(Refer to page 17)

PU connector

(Refer to page 25)

Rating plate

Inverter type

Input rating

Output rating

Serial number

Cooling fan

(Refer to page 416)

Charge lamp

Lit when power is supplied to the main circuit

(Refer to page 14)

FR-A740-00126-EC

LD (50 C) XXA

ND (50 C) XXA

SLD (40 C) XXA

HD (50 C) XXA

• Accessory

· Fan cover fixing screws (00620 or less)

(Refer to Installation Guideline)

These screws are necessary for compliance with

the European Directive

Capacity Screw Size (mm) Number

00083, 00126 M3 × 35 1

00170 to 00380 M4 × 40 2

00470, 00620 M4 × 50 1

REMARKS

For removal and reinstallation of covers, refer to page 5.

Overload Current Rating Ambient Temperature

SLD 110% 60s, 120% 3s 40 C (104 F) LD 120% 60s, 150% 3s 50 C (122 F) ND 150% 60s, 200% 3s 50 C (122 F) HD 200% 60s, 250% 3s 50 C (122 F)

· DC reactor supplied (01800 or more)

· Eyebolt for hanging the inverter (00770 to 06830)

M8 × two pieces

· Jumper (01800 only) (Refer to page 14)

1.2 Inverter and peripheral devices

Inverter and peripheral devices

Three-phase AC power supply

Use within the permissible power supply specifications of the inverter.

(Refer to page 426)

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

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

(Refer to page 4)

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 4)

Reactor (FR-HAL, FR-HEL option)

Reactors (option) must be used when power harmonics measures are taken, the power factor is to be improved or the inverter is installed near a large power supply system (1000kVA or more). The inverter may be damaged if you do not use reactors. Select the reactor according to the model. Remove the jumpers across terminals P/+ - P1 to connect the DC reactor to the 01160 or less.

(Refer to page 4.)

AC reactor (FR-HAL)

USB connector

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

Inverter (FR-A700)

The life of the inverter is influenced by ambient temperature. The ambient 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 7) 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 t o page 12) Refer to page 13 for the built-in EMC filter.

High-duty brake resistor (FR-ABR

Braking capability of the inverter builtin brake can be improved. Remove the jumper across terminal PR-PX when connecting the high-duty brake resistor. (00250 or less) Always install a thermal relay when using a brake resistor whose capacity is 11K or more.

(Refer to page 37)

*3 Compatible with the 00620 or less.

P/+

)

Noise filter (FR-BSF01, 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

Earth (Ground)

Noise filter (FR-BLF)

The 01800 or less has a built-in common mode core.

High power factor converter

, MT-HC*2)

(FR-HC

Power supply harmonics can be greatly suppressed. Install this as required.

*1 Compatible with the 01800 or less. *2 Compatible with the 02160 or more.

DC reactor (FR-HEL)

For the 01800 or more, a DC reactor is supplied. Always install the reactor.

(Refer to page 14.)

Power regeneration common converter (FR-CV Power regeneration converter (MT-RC

Great braking capability is obtained. Install this as required.

)

R/L1 S/L2 T/L3

P1P/+ N/-P/+

Brake unit (FR-BU2, FR-BU

Resistor unit (FR-BR

The regenerative braking capability of the inverter can be exhibited fully. Install this as required.

P/+

, MT-BR5*2)

, MT-BU5*2)

Earth

(Ground)

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.

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.

· 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. An EMC filter can minimize noise interference.

(Refer to page 13.)

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

OUTLINE

Inverter and peripheral devices

1.2.1 Peripheral devices

Check the motor capacity 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:

400V class

Motor Output

(kW)

Applicable Inverter Type

0.4 FR-A740-00023-EC 30AF 5A 30AF 5A S-N10 S-N10

0.75 FR-A740-00038-EC 30AF 5A 30AF 5A S-N10 S-N10

1.5 FR-A740-00052-EC 30AF 10A 30AF 10A S-N10 S-N10

2.2 FR-A740-00083-EC 30AF 10A 30AF 10A S-N10 S-N10

3.7 FR-A740-00126-EC 30AF 20A 30AF 15A S-N10 S-N10

5.5 FR-A740-00170-EC 30AF 30A 30AF 20A S-N20 S-N11, N12

7.5 FR-A740-00250-EC 30AF 30A 30AF 30A S-N20 S-N20

11 FR-A740-00310-EC 50AF 50A 50AF 40A S-N20 S-N20

15 FR-A740-00380-EC 100AF 60A 50AF 50A S-N25 S-N20

18.5 FR-A740-00470-EC 100AF 75A 100AF 60A S-N25 S-N25

22 FR-A740-00620-EC 100AF 100A 100AF 75A S-N35 S-N25

30 FR-A740-00770-EC 225AF 125A 100AF 100A S-N50 S-N50

37 FR-A740-00930-EC 225AF 150A 225AF 125A S-N65 S-N50

45 FR-A740-01160-EC 225AF 175A 225AF 150A S-N80 S-N65

55 FR-A740-01800-EC 225AF 200A 225AF 175A S-N80 S-N80 75 FR-A740-02160-EC ⎯ 225AF 225A ⎯ S-N95

90 FR-A740-02600-EC ⎯ 225AF 225A ⎯ S-N150 110 FR-A740-03250-EC ⎯ 225AF 225A ⎯ S-N180 132 FR-A740-03610-EC ⎯ 400AF 400A ⎯ S-N220 160 FR-A740-04320-EC ⎯ 400AF 400A ⎯ S-N300 185 FR-A740-04810-EC ⎯ 400AF 400A ⎯ S-N300 220 FR-A740-05470-EC ⎯ 600AF 500A ⎯ S-N400 250 FR-A740-06100-EC ⎯ 600AF 600A ⎯ S-N600 280 FR-A740-06830-EC ⎯ 600AF 600A ⎯ S-N600 315 FR-A740-07700-EC ⎯ 800AF 700A ⎯ S-N600 355 FR-A740-08660-EC ⎯ 800AF 800A ⎯ S-N600 400 FR-A740-09620-EC ⎯ 1000AF 900A ⎯ S-N800

450 FR-A740-10940-EC ⎯ 1000AF 1000A ⎯

500 FR-A740-12120-EC ⎯ 1200AF 1200A ⎯

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

Install one MCCB per inverter. For installations in the United States or Canada, use the fuse certified by the UL and cUL.

(Refer to Installation Guideline.)

*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.

*4 When the breaker on the inverter primary 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.

Breaker Selection*2,4 Input Side Magnetic Contactor*3

Reactor connection Reactor connection

without with

without

with

1000A Rated product

MCCB INV

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.

FR-A740-00620 or less

•

Removal

1) Loosen the installation screws of the front cover.

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

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

Front cover

•Reinstallation

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

Front cover

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

Front cover

OUTLINE

Installation hook

3) Tighten the installation screws and fix the front cover.

Front cover

Method of removal and reinstallation of the

front cover

FR-A740-00770-EC or more

•

Removal

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

Front cover 1

•Reinstallation

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

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

Front cover 2

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.

Installation hook

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

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

Front cover 2

Front cover 1

REMARKS

⋅ For the FR-A740-04320-EC or more, 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.

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

As the inverter installation enviromnet should satisfiy 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

Ambient 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

*1 2.9m/s2 or less for the FR-A740-04320 or more.

(1) Temperature

The permissible ambient temperature of the inverter is -10°C to +50°C or -10°C to +40°C (when SLD is set). 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 ambient 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.

LD, ND(Initial setting), HD -10 to +50°C (non-freezing)

SLD -10 to +40°C (non-freezing)

5.9m/s

or less *1

OUTLINE

(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.)

Installation of the inverter and enclosure

design

(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.

(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 (2.9m/s2 for the FR-A740-04320 or more) at 10 to 55Hz frequency 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 fin, 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

1.4.3 Inverter placement

(1) Installation of the Inverter

Installation on the enclosure

00023 to 00620 00770 or more

Fix six positions for the FR-A740-04320 to 08660 and fix eight positions for the FR-A74009620 to 12120.

CAUTION

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

Vertical

* Refer to the clearances on the next page.

Installation of the inverter and enclosure

design

(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.

10cm or more

(front)

20cm or more

10cm or more

20cm or more

Clearances (side)

Inverter

5cm or more

Measurement position

Inverter

5cm

Measurement position

Temperature: -10°C to 50°C (LD, ND*, HD)

-10°C to 40°C (SLD)

* Initial setting

Ambient humidity: 90% RH maximum

Leave enough clearances and take cooling measures.

5cm

ClearancesAmbient temperature and humidity

01800 or less 02160 or more

10cm or more

5cm or more *

10cm or more

*1cm or more for 00126 or less

REMARKS

For replacing the cooling fan of the 04320 or more, 30cm of space is necessary in front of the inverter. Refer to page 416 for fan replacement.

(3) Inverter mounting orientation

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

(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 right figure (a). When it is inevitable to arrange them vertically to minimize space, take such

Inverter

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 ambient temperature of the inverter higher than the permissible value by providing ventilation and increasing the enclosure size.

(a) Horizontal arrangement

(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 intalling 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

Enclosure Enclosure

Inverter

Guide Guide

Inverter

(b) Vertical arrangement

Arrangement of multiple inverters

Inverter Inverter

Guide

Placement of ventilation fan and inverter

2 WIRING

This chapter describes the basic "WIRING" for use of this product. Always read the instructions before using the equipment

2.1 Wiring ......................................................................12

2.2 Main circuit terminal specifications.......................... 14

2.3 Control circuit specifications.................................... 23

2.4 Connection of motor with encoder (vector control) .31

2.5 Connection of stand-alone option units ...................37

Wiring

2.1 Wiring

2.1.1 Terminal connection diagram

Source logic

Main circuit terminal

Control circuit terminal

Three-phase AC

Control input signals (No voltage input allowed)

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

(Refer to page 222)

*3. JOG terminal can be used

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

*4. AU terminal can be

used as PTC input terminal.

Frequency setting signal (Analog)

Terminal input specifications

5. 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 page 275)

. It is recommended to use 2W1kΩ

when the frequency setting signal is changed frequently.



*1. DC reactor (FR-HEL)

Be sure to connect the DC reactor supplied with the 01800 or more. When a DC reactor is connected to the 01160 or less, remove the jumper across P1-P/+.

(Refer to page 14.)

MCCB

power supply

Jumper

*2. To supply power to the

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

Forward

rotation

start

Reverse

rotation

start

Start self-

holding selection

High speed

Multi-speed selection

Middle

speed

Low speed

Jog mode

Second function selection

Output stop

Reset

Terminal 4 input selection

(Current input selection)

Selection of automatic restart

(Common for external power supply transistor)

Frequency setting

after instantaneous

Contact input common (Sink)

Contact input common

potentiometer

1/2W1k

power failure

24VDC power supply

(+)

Auxiliary

input

(-)

Terminal

(+)

4 input

(-)

(Current

input)

Connector for plug-in option connection

Earth

(Ground)

Jumper

Earth

(Ground)

R/L1 S/L2 T/L3

R1/L11 S1/L21

Main circuit

Control circuit

STF

STR

STOP

JOG

MRS

RES

PTC

10E(+10V)

10(+5V)

SOURCE

Voltage/current

0 to 5VDC 0 to 10VDC

0 to 20mADC

(Analog common)

10VDC

0 to

0 to ±5VDC

4 to 20mADC

0 to 5VDC 0 to 10VDC

Option connector 1

Option connector 2

Option connector 3

Jumper

PX PR N/-P/+

Inrush current

limit circuit

EMC filter ON/OFF connecter

OFF

SINK

24V

input switch

OFF

(Initial value)

selected

(Initial value)

selected

(Initial value)

selected

Brake unit (Option)

PU connector

USB connector

RXD+

Terminating

resistor

CAUTION

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

· 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.

*7. A CN8 connector is provided with the

02160

or more.

*8. Brake resistor (FR-ABR)

Remove the jumper across terminal PR-PX when connecting a brake resistor. (00023 to 00250)

CN8

Terminal PR is provided for the 00023 to 00620.

Install a thermal relay to prevent an overheat and burnout of the brake resistor.

(Refer to page 39)

U V

Relay output 1 (Alarm output)

Relay output 2

RUN

Running

Up to frequency

IPF

Instantaneous power failure

Overload

Frequency detection

Open collector output common Sink

/source common

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

TXD+

TXD-

RXD-

VCC

(Refer to page 43)

Motor

Earth (Ground)

Relay output

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

(Refer to page 230)

Open collector output

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

(Refer to page 230)

(+)

Analog current output (0 to 20mADC)

(-)

(+)

Analog signal output (0 to 10VDC)

(-)

RS-485 terminals

Data transmission

Data reception

GND

(Permissible load

current 100mA)

Wiring

2.1.2 EMC filter

This inverter is equipped with a built-in EMC filter (capacitive filter) and zero-phase reactor. Effective for reduction of air-propagated noise on the input side of the inverter. The EMC filter is factory-set to enable (ON). To disable it, fit the EMC filter ON/OFF connector to the OFF position. The input side zero-phase reactor, built-in the 01800 or less inverter, is always valid regardless of on/off of the EMC filter on/off connector.

00126 or less

EMC filter OFF EMC filter OFF EMC filter OFFEMC filter ON EMC filter ON EMC filter ON

00023 to 00126

(initial setting) (initial setting) (initial setting)

00170, 00250

00310, 00380 00470, 00620

00310 or more

00770 or more

EMC filter ON/OFF connector

VUW

(1) Before removing a front cover, check to make sure that the indication of the inverter operation panel is off, 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. (Refer to page 5.)

(2) When disconnecting the connector, push the fixing tab and pull the connector straight without pulling the cable or

forcibly pulling the connector with the tab fixed. When installing the connector, also engage the fixing tab securely. (If it is difficult to disconnect the connector, use a pair of long-nose pliers, etc.)

EMC filter

ON/OFF connector

(Side view)

Disengage connector fixing tab With tab disengaged,

pull up the connector straight.

CAUTION

⋅ Fit the connector to either ON or OFF.

WARNING

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

WIRING

Main circuit terminal specifications

2.2 Main circuit terminal specifications

2.2.1 Specification of main circuit terminal

Term inal

Symbol

R/L1, S/L2, T/L3

Terminal Nam e Description

Connect to the commercial power supply.

AC power input

Keep these terminals open when using the high power factor converter (FR-HC and MT-HC) or power regeneration common converter (FR-CV).

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

Connected to the AC power supply terminals R/L1 and S/L2. To retain the alarm display and alarm output or when using the high power factor converter (FR-HC

and MT-HC

) or power regeneration common converter

(FR-CV), remove the jumpers from terminals R/L1-R1/L11 and S/L2-S1/

R1/L11, S1/L21

Power supply for control circuit

L21 and apply external power to these terminals. Do not turn off the power supply for control circuit (R1/L11, S1/L21) with the 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. 00380 or less : 60VA, 00470 or more : 80VA

Brake resistor

P/+, PR

connection (00620 or less)

P/+, N/-

P/+, P1

PR, PX

Brake unit connection

DC reactor connection

Built-in brake circuit connection

Earth (Ground)

* Connecting a DC reactor to the 01800

• When using the inverter for LD or SLD rating, always connect the supplied DC reactor.

• To improve power factor and suppress harmonics with a reactor when using the inverter for ND or HD rating, connect the supplied DC reactor.

• It is not necessary to connect the supplied DC reactor for operation other than the above. When not connecting the supplied DC reactor, connect a supplied jumper across terminals P/+ and P1.

• The inverter operates only when either a DC reactor or jumper is connected.

Remove the jumper from terminals PR-PX (00250 or less) and connect an optional brake resistor (FR-ABR) across terminals P/+-PR. For the 00620 or less, connecting the resistor further provides regenerative braking power.

Connect the brake unit (FR-BU2, FR-BU, BU and MT-BU5), power regeneration common converter (FR-CV), high power factor converter (FR-HC and MT-HC) or power regeneration converter (MT-RC).

For the 01160 or less, remove the jumper across terminals P/+ - P1 and connect the DC reactor. (As a DC reactor is supplied with the 01800 or more as standard, be sure to connect the DC reactor.*)

When the jumper is connected across terminals PX-PR (initial status), the built-in brake circuit is valid. (Provided for the

00250

or less.)

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

CAUTION

· When connecting a dedicated brake resistor (FR-ABR) and brake unit (FR-BU2, FR-BU, BU) remove jumpers across terminals PR-PX (00250 or less). For details, refer to page 37 to 42.

Main circuit terminal specifications

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

400V class

FR-A740-00023 to 00126-EC FR-A740-00170, 00250-EC

Jumper

Screw size (M4)

R/L1 S/L2 T/L3

N/-

P/+

Jumper

Charge lamp

R1/L11 S1/L21

Power supply

Motor

Screw size

(M4)

Charge lamp

Jumper

Screw size

(M4)

Power supply

FR-A740-00310, 00380-EC FR-A740-00470, 00620-EC

R1/L11 S1/L21

Screw size

(M4)

Charge lamp

Screw size (M6)

Charge lamp

Screw size (M5)

R/L1 S/L2 T/L3

Power supply

Screw size (M5)

Jumper

N/-

P/+

Screw size (M6)

R/L1 S/L2 T/L3

Power supply

Motor

FR-A740-00770, 00930, 01160-EC FR-A740-01800-EC

R1/L11 S1/L21

R/L1 S/L2 T/L3

Screw size

Screw size (M4)

Jumper

Motor

(M4)

N/-

Motor

P/+

R1/L11 S1/L21

N/-

Jumper

Jumpe

P/+

WIRING

R1/L11 S1/L21

Screw size(M4)

Jumper

Screw size (00770: M6 00930, 01160: M8)

N/-

R/L1 S/L2 T/L3

Power supply

(00770: M6

00930/01160: M8)

P/+

Jumper

Screw size

Charge lamp

Motor

R1/L11 S1/L21

Screw size (M4)

Screw size (M8) Screw size (M10) Screw size (M8)

R/L1 S/L2 T/L3

Charge lamp

Jumper

N/-

P/+

Power supply

DC reactor

* Refer to page 14 for connection of the DC reactor.

Motor

Screw size (M8)

Main circuit terminal specifications

FR-A740-02160, 02600-EC FR-A740-03250, 03610-EC

R1/L11 S1/L21

Screw size (M4)

R/L1 S/L2 T/L3

Power supply

Charge lamp

Jumper

N/-

DC reactor

P/+

Screw size

Motor

Screw size (M10)

R/L1 S/L2 T/L3

(M10)

Power supply

Screw size (M12)

(for option)

N/-

P/+

DC reactor

Screw size (M4)

Charge lamp

Jumper

Screw size (M10)

P/+

Screw size (M10)

P/+

Motor

FR-A740-04320, 04810-EC FR-A740-05470 to 12120-EC

R1/L11 S1/L21

N/-

R/L1 S/L2 T/L3

R1/L11 S1/L21

Screw size (M4)

N/-

P/+

Screw size (M10)

Charge lamp

Jumper

Screw size (M12)

P/+

R/L1 S/L2 T/L3

P/+

Power supply

Screw size (M12)

(for option)

DC reactor

Motor

Power supply

Screw size (M4)

Charge lamp

Jumper

Screw size (M12)

P/+

DC reactor

Motor

Screw size (M10)

Main circuit terminal specifications

CAUTION

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

· 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.

· When wiring the inverter main circuit conductor of the 05470 or more, tighten a nut from the right side of the conductor. When wiring two wires, place wires on both sides of the conductor. (Refer to the drawing on the right.) For wiring, use bolts (nuts) provided with the inverter.

• Handling of the wiring cover

(FR-A740-00470, 00620-EC) For the hook of the wiring cover, cut off the necessary parts using a pair of long-nose pliers etc.

CAUTION

Cut off the same number of lugs as wires. If parts where no wire is put through has been cut off (10mm or more), protective structure (JEM1030) becomes an open type (IP00).

WIRING

Main circuit terminal specifications

2.2.3 Cables and wiring length

(1) Applied cable size

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

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

Crimping

Terminal

R/L1, S/L2,

T/L3

U, V, W

HIV, etc. (mm2) *1

R/L1,

S/L2,

U, V, W P/+, P1

T/L3

Applicable Inverter

Typ e

FR-A740-00023 to 00126-EC

Ter mi na l

Screw Size *4

Tightening

Torque

N·m

M4 1.5 2-4 2-4 2 2 2 2 14 14 2.5 2.5 2.5

FR-A740-00170-EC M4 1.5 2-4 2-4 2 2 3.5 3.5 12 14 2.5 2.5 4 FR-A740-00250-EC M4 1.5 5.5-4 5.5-4 3.5 3.5 3.5 3.5 12 12 4 4 4 FR-A740-00310-EC M5 2.5 5.5-5 5.5-5 5.5 5.5 5.5 8 10 10 6 6 10 FR-A740-00380-EC M5 2.5 8-5 8-5 8 8 8 8 8 8 10 10 10 FR-A740-00470-EC M6 4.4 14-6 8-6 14 8 14 14 6 8 16 10 16 FR-A740-00620-EC M6 4.4 14-6 14-6 14 14 22 14 6 6 16 16 16 FR-A740-00770-EC M6 4.4 22-6 22-6 22 22 22 14 4 4 25 25 16 FR-A740-00930-EC M8 7.8 22-8 22-8 22 22 22 14 4 4 25 25 16 FR-A740-01160-EC M8 7.8 38-8 38-8 38 38 38 22 1 2 50 50 25 FR-A740-01800-EC M8 7.8 60-8 60-8 60 60 60 22 1/0 1/0 50 50 25 FR-A740-02160-EC M10 14.7 60-10 60-10 60 60 60 38 1/0 1/0 50 50 25 FR-A740-02600-EC M10 14.7 60-10 60-10 60 60 80 38 3/0 3/0 50 50 25 FR-A740-03250-EC FR-A740-03610-EC FR-A740-04320-EC FR-A740-04810-EC FR-A740-05470-EC FR-A740-06100-EC FR-A740-06830-EC FR-A740-07700-EC FR-A740-08660-EC FR-A740-09620-EC FR-A740-10940-EC FR-A740-12120-EC

*1 For the

*2 For the

*3 For the

*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).

01800

temperature of

02160

For the with continuous maximum permissible temperature of enclosure.

01160

Assumes that the ambient temperature is

01800

For the Assumes that the ambient temperature is (Selection example for use mainly in the United States.)

01160

Assumes that the ambient temperature is

01800

For the Assumes that the ambient temperature is (Selection example for use mainly in Europe.)

03250

For the

04320

For the

M10-M12 M10-M12 M12-M10 M12-M10 M12-M10 M12-M10 M12-M10 M12-M10 M12-M10 M12-M10 M12-M10 M12-M10

or less, the cable size is that of the cable (HIV cable (600V class 2 vinyl-insulated cable) etc.) with continuous maximum permissible

75°C

. Assumes that the ambient temperature is

or more, the recommended cable size is that of the cable (LMFC (heat resistant flexible cross-linked polyethylene insulated cable) etc.)

or less, the recommended cable size is that of the cable (THHW cable) with continuous maximum permissible temperature of

or more, the recommended cable size is that of the cable (THHN cable) with continuous maximum permissible temperature of

or less, the recommended cable size is that of the cable (PVC cable) with continuous maximum permissible temperature of

or more, the recommended cable size is that of the cable (XLPE cable) with continuous maximum permissible temperature of

and

03610

or more, screw sizes are different. (<R/L1, S/L2, T/L3, U, V, W> - <a screw for earthing (grounding)>)

14.7 80-10 80-10 80 80 80 38 3/0 3/0 70 70 35

14.7 100-10 100-10 100 100 100 38 4/0 4/0 95 95 50

24.5 150-12 150-12 125 150 150 38 250 250 120 120 70

24.5 150-12 150-12 150 150 150 38 300 300 150 150 95

24.5 100-12 100-12 2×100 2×100 2×100 60 2×4/0 2×4/0 2×95 2×95 95

24.5 100-12 100-12 2×100 2×100 2×125 60 2×4/0 2×4/0 2×95 2×95 95

24.5 150-12 150-12 2×125 2×125 2×125 60 2×250 2×250 2×120 2×120 120

24.5 150-12 150-12 2×150 2×150 2×150 100 2×300 2×300 2×150 2×150 150

24.5 C2-200

24.5 C2-250

24.5 C2-200

40°C

, screw sizes are different (<R/L1, S/L2, T/L3, U, V, W, a screw for earthing (grounding)> - <P/+ for option connection>)

C2-200 C2-200 C2-250 C2-250

90°C

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

or less and wiring is performed in an enclosure.

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

or less and wiring is performed in an enclosure.

2×200 2×200 2×200 100 2×350 2×350 2×185 2×185 2×95 2×200 2×200 2×200 100 2×400 2×400 2×185 2×185 2×95 2×250 2×250 2×250 100 2×500 2×500 2×240 2×240 2×120 3×200 2×250 3×200 2×100 2×500 2×500 2×240 2×240 2×120

50°C

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

. Assumes that the ambient temperature is

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

Cable Sizes

Earth

(Ground)

Cable

AWG/MCM *2

R/L1, S/L2,

U, V, W

T/L3

50°C

or less and wiring is performed in an

PVC, etc. (mm2) *3

R/L1,

S/L2,

U, V, W

T/L3

Earth

(Ground)

Cable

75°C

90°C

70°C

90°C

line voltage drop [V]=

3 × wire resistance[mΩ/m] × wiring distance[m] × current[A]

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.

1000

Main circuit terminal specifications

(2) Notes on earthing (grounding)

 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) Where possible, use independent earthing (grounding) for the inverter. If independent earthing (grounding) (I)

is impossible, use joint earthing (grounding) (II) where the inverter is connected with the other equipment at an earthing (grounding) point. Joint earthing (grounding) as in (III) must be avoided as the inverter is connected with the other equipment by a common earth (ground) cable. Also a leakage current including many high frequency components flows in the earth (ground) cables of the inverter and inverter-driven motor. Therefore, they must use the independent earthing (grounding) method and be separated from the earthing (grounding) of equipment sensitive to the aforementioned noises. In a tall building, it will be a good policy to use the noise malfunction prevention type earthing (grounding) with steel frames and carry out electric shock prevention type earthing (grounding) in the independent earthing (grounding) method.

(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).

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

Inverter

(I) Independent earthing (grounding).......Good

Other

equipment

To be compliant with the European Directive (Low Voltage Directive), refer to the Installation guideline.

Inverter

(II) Common earthing (grounding).......Good

Other

equipment

Inverter

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

Other

equipment

WIRING

Main circuit terminal specifications

(3) 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. (The wiring length should be 100m maximum for vector control.)

Pr. 72 PWM frequency selection setting

(carrier frequency) *

2 (2kH) or less 300m 500m 500m

3 (3kHz), 4 (4kHz) 200m 300m 500m

5 (5kHz) to 9 (9kHz) 100m

10 (10kHz) or more 50m

00023 00038

00052 or

Total wiring length (00052 or more)

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 57 for measures against deteriorated insulation.

CAUTION

· 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 or fast response current limit function or a malfunction or fault of the equipment connected on the inverter output side. If fast response current limit function malfunctions, disable this function. (For Pr. 156 Stall prevention operation selection, refer to page 144 .)

· For details of Pr. 72 PWM frequency selection , refer to page 272.

(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

+ 444 hidden pages

Mitsubishi FR-A740-00083-EC, FR-A700, FR-A740-00126-EC, FR-A740-00170-EC, FR-A740-00250-EC Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual