Mitsubishi FB13PNT, Quick Start Manual

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2-31 2-31
501135 501135
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3.1 3.11 1 Tra Tracti ction Mo on Motor Cu tor Curre rrent Se nt Senso nsor L.H r L.H., Fa ., Fault (2 ult (24) 4)
Error code: 24 Error code: 24
Situation Situation
Display: "24". All Display: "24". All truck operations inhibited. Line contactor HOLD and ST contactor HOLD. truck operations inhibited. Line contactor HOLD and ST contactor HOLD.
Traction moto Traction motor and pump mo r and pump motor operation tor operation inhibited. If this fault o inhibited. If this fault occurs before S ccurs before ST contactor CLO T contactor CLOSE, all SE, all
operations inhibited except mast lowering operation. operations inhibited except mast lowering operation.
Possible Possible
cause
cause
Faulty traction inverter. (U, V current sensor in traction inverter) Faulty traction inverter. (U, V current sensor in traction inverter)
Faulty DSP card of traction inverter. Faulty DSP card of traction inverter.
Faulty contact or wire breakage of DSP flat
Faulty contact or wire breakage of DSP flat cable in traction inverter. cable in traction inverter.
Trigger of Trigger of
the error the error
code
code
When turning on power, current sensor value is out of -120 A to 120 A . When turning on power, current sensor value is out of -120 A to 120 A .
Checks Checks
(2) Follow the inverter testing procedure (2) Follow the inverter testing procedure
Normal Abnormal Normal Abnormal
(4) Replace traction inverter (4) Replace traction inverter
(6) Secure DSP flat cable if loose (6) Secure DSP flat cable if loose
Replace traction inverter if wire breaks Replace traction inverter if wire breaks
(3) Remove DSP cover of traction inverter (3) Remove DSP cover of traction inverter
Check DSP Flat cable for looseness or wire breakage Check DSP Flat cable for looseness or wire breakage
Normal Abnormal Normal Abnormal
(5) Replace DSP card of traction inverter (5) Replace DSP card of traction inverter
All powe All powe r cables r cables conne conne ct and turning on powe ct and turning on powe r r
If fault (24) remains If fault (24) remains
(7) Perform inverter discharging work (7) Perform inverter discharging work
(1) Disconnect battery plug, then perform inverter discharging work (1) Disconnect battery plug, then perform inverter discharging work
(8) Replace the DSP card with t (8) Replace the DSP card with t he original he original card again card again , then , then
replace the traction inverter replace the traction inverter
Please keep the DSP card which is used for inspection Please keep the DSP card which is used for inspection
at step (5) because the card is normal at step (5) because the card is normal