Mitsubishi Electric FR-E540 Instruction Manual Page 39
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2.3 Other wiring
INSTALLATION AND WIRING
28
2.3 Other wiring
2.3.1 Power harmonics
Power harmonics may be generated from the converter section of the inverter, affecting power supply
equipment, power capacitors, etc. Power harmonics are different in generation source, frequency and
transmission path from radio frequency (RF) noise and leakage currents. Take the following counter
measures.
•
The differences between harmonics and RF noise are indicated below:
Item Harmonics RF Noise
Frequency
Normally 40th to 50th degrees or less, (up
to 3kHz or less)
High frequency (several 10kHz to MHz order)
Environment To wire paths, power impedance Across spaces, distance, laying paths
Quantitative understanding Logical computation is possible Occurs randomly, quantitative understanding is difficult.
Generated amount Approximately proportional to load capacity
According to current fluctuation rate (larger with faster
switching)
Immunity of affected device Specified in standards for each device. Differs according to maker’s device specifications.
Example of safeguard Install a reactor Increase the distance.
•
Safeguard
The harmonic current generated from the inverter to the
power supply differs according to various conditions such
as the wiring impedance, whether a power factor
improving reactor is used or not, and output frequency
and output current on the load side.
For the output frequency and output current, the
adequate method is to obtain them under rated load at
the maximum operating frequency.
NFB
IM
Inverter
Power factor
improving DC
reactor
Moto
r
Do not insert power factor
improving capacitor
Power factor
improving AC
reactor
Note: A power factor improving capacitor or surge suppressor on the inverter’s output may overheat or be
damaged due to the harmonics of the inverter output. Also, since the overcurrent protection is activated by
an overcurrent that flows in the inverter, do not insert a capacitor or surge suppressor on the inverter's
output when the motor is inverter-driven. To improve the power factor, insert a power factor improving
reactor in the inverter’s input or DC circuit. For details, refer to the technical information.
2
- FR-F520-0.75K to 55K 1
- FR-F540-0.75K to 55K(-EC) 1
- FR-F520-11K to 55K-NA 1
- FR-F540-11K to 55K-NA 1
- SAFETY INSTRUCTIONS 3
- 1. Electric Shock Prevention 3
- 2. Fire Prevention 3
- 3. Injury Prevention 3
- 4. Additional instructions 4
- (2) Wiring 4
- (3) Trial run 4
- (4) Operation 4
- (5) Emergency stop 5
- (7) Disposing of the inverter 5
- (8) General instructions 5
- CONTENTS 6
- Contents 6
- 6 SPECIFICATIONS 184 9
- 7 OPTIONS 192 9
- APPENDICES 195 9
- CHAPTER 1 10
- 1.1 Pre-Operation Information 11
- 1.2 Basic Configuration 12
- 1.3 Structure 13
- Front cover 14
- Inverter 14
- INSTALLATION AND WIRING 17
- 2.1 Installation 18
- 2.2 Wiring 20
- Notes on Grounding 24
- EC version 30
- NA and Japanese version 30
- Twin contact 38
- Low-level signal contacts 38
- 2.3 Other wiring 39
- 2.3.6 Peripheral devices 48
- 2.3.9 Earthing (EC version) 53
- CHAPTER 3 54
- OPERATION/CONTROL 54
- 3.1 Pre-Operation Information 55
- 3.1.2 Power on 57
- 3.2 Operation Panel 58
- 3.2.3 Monitoring 59
- 3.2.4 Frequency setting 59
- 3.2.6 Operation mode 61
- 3.2.7 Help mode 61
- 3.2.8 Copy mode 63
- 3.3.1 Parameter checking 64
- Simple mode parameter 65
- 3.3.2 Main parameter settings 66
- 3.4 Operation 68
- CONTROL PANEL 69
- 3.4.3 PU operation mode 70
- 3.4.4 Combined operation mode 71
- CHAPTER 4 72
- PARAMETERS 72
- 4 PARAMETERS 73
- 4.1 Parameter List 73
- Output frequency (Hz) 81
- Output voltage 81
- (Pr. 52 to Pr. 54, Pr. 158) 99
- With alarm 100
- PARAMETERS 101
- 4.2.29 Applied motor (Pr. 71) 110
- 4.2.31 Voltage input (Pr. 73) 112
- (Pr. 75) 113
- Time (Minute) 131
- Minute (Second) 131
- (Pr. 135 to Pr. 139) 140
- Set time (s) 149
- Overload status (OL output) 149
- OL output signal 149
- (Pr. 170, Pr. 171) 151
- Pr. 516 Pr. 504 163
- Pr. 502 + Pr. 503 163
- (Pr. 902 to Pr. 905) 170
- MON EXT PU 172
- PROTECTIVE FUNCTIONS 176
- 5 PROTECTIVE FUNCTIONS 177
- 5.1 Errors (Alarms) 177
- (2) Minor fault 184
- (3) Warnings 184
- 5.1.4 Alarm code output 187
- 5.1.5 Resetting the inverter 187
- 5.2 Troubleshooting 188
- 5.3.2 Check items 190
- 5.3.3 Periodic inspection 190
- 5.3.5 Pressure test 191
- <Preparation> 193
- <Checking method> 193
- Fan cover 194
- Fan connectors 194
- <Example: FR-F540-5.5K> 194
- 5.3.8 Inverter replacement 195
- CHAPTER 6 198
- SPECIFICATIONS 198
- 6 SPECIFICATIONS 199
- 6.1 Standard Specifications 199
- 6.1.2 Common specifications 201
- 95 (3.74) 203
- CHAPTER 7 207
- 7 OPTIONS 208
- 7.1 Option List 208
- • Inboard options 210
- APPENDICES 211
- Appendix 1 Data Code List 212
- REVISIONS 217
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