Mitsubishi FB13PNT, Быстрый старт

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CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3.1 3.12 2 Tra Tracti ction M on Moto otor L. r L.H., H., Ove Over-c r-curr urrent ( ent (25) 25)
Error code: 25 Error code: 25
Situation Situation
Display: "25". All Display: "25". 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 moter. (Contain the Faulty traction moter. (Contain the bearing sensor) bearing sensor)
Faulty contact or wire breakage of traction motor speed sensor harness. Faulty contact or wire breakage of traction motor speed sensor harness.
Faulty traction inverter.
Faulty 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.
Faulty DSP card of traction inverter. Faulty DSP card of traction inverter.
Faulty main harness.
Faulty main harness.
Trigger of Trigger of
the error the error
code
code
Motor current is more than 1105 A (Moment) or 893 A (1 mS) or 829 A (1.6 mS). Motor current is more than 1105 A (Moment) or 893 A (1 mS) or 829 A (1.6 mS).
Checks Checks
(2) Check traction motor body and terminal for burning and small (2) Check traction motor body and terminal for burning and small
Normal Abnormal Normal Abnormal
(4) Replac (4) Replac e t e t rac rac tion tion motor motor
(7) Replace traction (7) Replace traction
motor or cables motor or cables
(3) Check motor terminal (U V W phases) for shorting to (3) Check motor terminal (U V W phases) for shorting to
the motor body and truck frame the motor body and truck frame
N N o o t t s s h h o o r r t t i i n n g g s s h h o o r r t t i i n n g g
(5) Remove the all cables of motor and traction inverter (5) Remove the all cables of motor and traction inverter
terminals (P N U V W ) terminals (P N U V W )
Check motor terminals for shorting to the motor body Check motor terminals for shorting to the motor body
Check the cables for shorting to the frame Check the cables for shorting to the frame
N N o o t t s s h h o o r r t t i i n n g g s s h h o o r r t t i i n n g g
(6) Replace traction (6) Replace traction
inverter inverter
(9) Disconnect battery plug, then perform inverter discharge (9) Disconnect battery plug, then perform inverter discharge
work work
Confirm connection of traction motor speed sensor Confirm connection of traction motor speed sensor
connector connector
Normal Abnormal Normal Abnormal
(1) Disconnect battery plug, then perform inverter discharging work (1) Disconnect battery plug, then perform inverter discharging work
(8) Confirm cable looseness and improper connections (8) Confirm cable looseness and improper connections
(U V W phases) for traction inverter and motor (U V W phases) for traction inverter and motor
N N o o r r m m a a l l A A b b n n o o r r m m a a l l
(10) Secure cable if loose or connect cable correctly (10) Secure cable if loose or connect cable correctly
(11) Connect connector securely (11) Connect connector securely
(12) Disconnect connectors E-06 and E-18 (12) Disconnect connectors E-06 and E-18
Check continuity between E-06-5 and E-18-1 (15) Check continuity between E-06-5 and E-18-1 (15)
Check continuity between E-06-6 and E-18-4 (18) Check continuity between E-06-6 and E-18-4 (18)
Check continuity between E-06-7 and E-18-2 (17) Check continuity between E-06-7 and E-18-2 (17)
Check continuity between E-06-19 and E-18-3 (16) Check continuity between E-06-19 and E-18-3 (16)
Continuity Continuity No No continuity continuity