Mitsubishi Electric FR-E540 Instruction Manual Page 191
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PROTECTIVE FUNCTIONS
177
5.3.4 Insulation resistance test using megger
1) Before performing the insulation resistance test using a megger on the external circuit, disconnect the
cables from all terminals of the inverter so that the test voltage is not applied to the inverter.
2) For the continuity test of the control circuit, use a meter (high resistance range) and do not use the megger
or buzzer.
3) For the inverter, conduct the insulation resistance test on the main circuit only as shown below and do not
perform the test on the control circuit. (Use a 500VDC megger.)
R
〈
L
1
〉
S
〈
L
2
〉
T
〈
L
3
〉
U
V
W
IM
Inverter
Moto
r
Power
supply
DC500V
megger
Ground terminal
5.3.5 Pressure test
Do not conduct a pressure test. The inverter's main circuit uses semiconductors, which may be deteriorated if
a pressure test is made.
5.3.6 Daily and Periodic Inspection
Interval
Periodic
Area of
Inspec-
tion
Inspection
Item
Description
Daily
1
year
2
years
Method Criterion Instrument
Surrounding
environment
Check ambient
temperature, humidity,
dust, dirt, etc.
$
(Refer to page 7)
Ambient
temperature:
(constant torque)
−
10
º
C to +50
º
C
(14
º
F to 122
º
F),
non-freezing.
(Variable torque)
−
10
º
C to +40
º
C
(14
º
F to 104
º
F),
non-freezing
Ambient humidity:
90% or less,
non-condensing.
Thermometer,
hygrometer,
recorder
Overall unit
Check for unusual
vibration and noise.
$
Visual and auditory
checks.
No fault.
General
Power
supply
voltage
Check that main circuit
voltage is normal.
$
Measure voltage
across inverter
terminals R-S-T
〈
L
1
-L
2
-L
3
〉
.
Within permissible
AC voltage
fluctuation
(Refer to page
184)
Meter, digital
multimeter
General
(1) Check with megger
(across main circuit
terminals and
ground terminal).
(2) Check for loose
screws and bolts.
(3) Check for overheat-
ing of each part.
(4) Clean.
$
$
$
$
(1) Disconnect all
cables from
inverter and
measure across
terminals R, S, T,
U, V, W
〈
L
1
, L
2
, L
3
,
U, V, W
〉
and
ground terminal
with megger.
(2) Re-tighten.
(3) Visual check.
(1) 5M
Ω
or more.
(2), (3) No fault.
500VDC class
megger
Conductors,
cables
(1) Check conductors
for distortion.
(2) Check cable sheaths
for breakage.
$
$
(1), (2) Visual check. (1), (2) No fault.
Main
circuit
Terminal
block
Check for damage.
$
Visual check. No fault
* For periodic inspection, consult Mitsubishi.
- 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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