Mitsubishi Electric F700 Instruction Manual Page 88
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- TROUBLESHOOTING
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Inspection Item
6
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
6.1.5 Checking the inverter and converter modules
<Preparation>
(1) Disconnect the external power supply cables (R/L1, S/L2, T/L3) and motor cables (U, V, W).
(2) Prepare a tester. (Use 100Ω range.)
<Checking method>
Change the polarity of the tester alternately at the inverter terminals R/L1, S/L2, T/L3, U, V, W, P/+ and N/−, and
check for continuity.
<Module device numbers and terminals to be checked>
(Assumes the use of an analog meter.)
6.1.6 Cleaning
Always run the inverter in a clean status.
When cleaning the inverter, gently wipe dirty areas with a soft cloth immersed in neutral detergent or ethanol.
CAUTION
1. Before measurement, check that the smoothing capacitor is discharged.
2. At the time of discontinuity, due to the smothing capacitor, the tester may not indicate ∞. At the time of continuity, the
measured value is several to several ten's-of ohms depending on the module type, circuit tester type, etc. If all measured
values are almost the same, the modules are without fault.
Tester
Polarity
Measured
Value
Tester
Polarity
Measured
Value
Converter module
D1
R/L1 P/+ Discontinuity
D4
R/L1 N/− Continuity
P/+ R/L1 Continuity N/− R/L1 Discontinuity
D2
S/L2 P/+ Discontinuity
D5
S/L2 N/− Continuity
P/+ S/L2 Continuity N/− S/L2 Discontinuity
D3
T/L3 P/+ Discontinuity
D6
T/L3 N/− Continuity
P/+ T/L3 Continuity N/− T/L3 Discontinuity
Inverter module
TR1
UP/+ Discontinuity
TR4
UN/− Continuity
P/+ U Continuity N/− U Discontinuity
TR3
VP/+ Discontinuity
TR6
VN/− Continuity
P/+ V Continuity N/− V Discontinuity
TR5
WP/+ Discontinuity
TR2
WN/− Continuity
P/+ W Continuity N/− W Discontinuity
CAUTION
Do not use solvent, such as acetone, benzene, toluene and alcohol, as they will cause the inverter surface paint to peel off.
Converter module Inverter module
D1 D2 D3
D4 D5 D6
TR1 TR3 TR5
TR4 TR6 TR2
U
V
W
R/L1
S/L2
T/L3
C
P/+
N/−
- INSTRUCTION MANUAL (BASIC) 1
- INVERTER 1
- 4. Additional Instructions 2
- Environment 2
- , surge suppressor or radio 2
- 2 INSTALLATION AND WIRING 2 3
- 3 DRIVE THE MOTOR 28 3
- 4 ADJUSTMENT 51 4
- 5 TROUBLESHOOTING 62 4
- 7 SPECIFICATIONS 91 5
- APPENDICES 110 5
- FR --F740 6
- 2 INSTALLATION AND WIRING 7
- 2.1 Peripheral devices 8
- Peripheral devices 9
- INSTALLATION AND WIRING 10
- •Reinstallation 11
- 2.4 Wiring 13
- 200V class 14
- Screw size 17
- Cable Sizes 19
- (3) Total wiring length 21
- (2) Output signals 23
- (separate power) 25
- (7) Control logic switchover 27
- 2.4.7 RS-485 terminal block 30
- 2.4.8 Communication operation 30
- 3.1 Step of operation 33
- 3.2 Operation panel (FR-DU07) 34
- Operation panel (FR-DU07) 35
- DRIVE THE MOTOR 36
- Operation 37
- 3 Base frequency 39
- (PU operation mode) 40
- Flickering 42
- Operation Display 43
- DisplayOperation 45
- 11. Stop 45
- (external operation) 48
- Three-phase 50
- AC power supply 50
- 10. Stop 51
- 7. Mode/monitor check 51
- 4 ADJUSTMENT 56
- CAUTION 58
- (Pr.7, Pr.8) 59
- ADJUSTMENT 60
- 4.7 Parameter clear 63
- 4.8 All parameter clear 64
- 4.9 Parameter copy 65
- 4.10 Parameter verification 66
- 5.1 List of alarm display 67
- Causes and corrective actions 68
- TROUBLESHOOTING 68
- Inverter 79
- (2) Clearing procedure 81
- 6.1 Inspection Item 84
- Inspection Item 85
- 6.1.6 Cleaning 88
- 6.1.7 Replacement of parts 89
- 6.1.8 Inverter replacement 93
- Earth (ground) terminal 94
- Measuring 95
- 7.1 Rating 96
- •400V class 97
- 7.2 Common specifications 98
- Common specifications 99
- Outline dimension drawings 100
- SPECIFICATIONS 100
- • DC reactor supplied 106
- • FR-F740-250K, 280K, 315K 106
- • FR-F740-400K 108
- • FR-F740-450K 109
- • FR-F740-500K, 560K 110
- • FR-PU04 111
- • FR-F740-185K to 315K 113
- • FR-F740-355K or more 113
- APPENDICES 115
- Extended parameters 117
- Extended parameter list 118
- (2) Wiring instructions 139
- Instructions for installation 140
- (1) EMC Directive 142
- (2) Low Voltage Directive 142
- Print Date 143
- Manual Number 143
- Revision 143
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