Mitsubishi FB13PNT, Quick Start Manual

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2-49 2-49
501135 501135
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3.1 3.19 9 Tra Tracti ction on Mot Motor or L. L.H., H., Ope Open ( n (46) 46)
Error code: 46 Error code: 46
Situation Situation
Display: "46". Traction motor operation inhibited. Pump motor and power steering operations inhibited if this Display: "46". Traction motor operation inhibited. Pump motor and power steering operations inhibited if this
fault occurs before pump contactor CLOSE, and both operable if it
fault occurs before pump contactor CLOSE, and both operable if it occurs after pump contactor CLOSE. Line occurs after pump contactor CLOSE. Line
contactor OPEN and pump contactor OPEN and pump contactor CLOSE or OPEN. contactor CLOSE or OPEN.
Possible Possible
cause
cause
Faulty contact or wire breakage of left side traction motor cable, faulty left Faulty contact or wire breakage of left side traction motor cable, faulty left side traction motor, faulty contact or side traction motor, faulty contact or
wire breakage of left side traction inverter connector, faulty contact of DSP flat wire breakage of left side traction inverter connector, faulty contact of DSP flat cable in left side cable in left side traction traction
inverter, wire breakage of main harness, faulty power supply card inverter, wire breakage of main harness, faulty power supply card of logic unit, faulty of logic unit, faulty DSP card of left side DSP card of left side
traction inverter, faulty left traction inverter, faulty left side traction inverter, when restarting after motor shorted side traction inverter, when restarting after motor shorted
Trigger of Trigger of
the error the error
code
code
Motor voltage is abnormal when power is turned on. Current does not Motor voltage is abnormal when power is turned on. Current does not flow when torque instruction is flow when torque instruction is
requested. requested.
Checks Checks
(4) Secure cable if loose (4) Secure cable if loose
(12) Secure DSP flat cable if loose (12) Secure DSP flat cable if loose
Replace inverter if wire breaks Replace inverter if wire breaks
(15) Repair or replace harness (15) Repair or replace harness
(8) Connect connector securely (8) Connect connector securely
(10) Replace motor cables (10) Replace motor cables (9) Repla (9) Repla ce left ce left traction motor traction motor
(1) Disconnect battery plug, then perform inverter discharging work (1) Disconnect battery plug, then perform inverter discharging work
(14) Con (14) Con nect connec nect connec tor E-01 tor E-01 to logic unit, then turn on to logic unit, then turn on
power again power again
(11) D (11) D isconnect connec isconnect connec tor E-01 tor E-01 of logic unit of logic unit
Check continuity between E-01-5 and E-06-16(9) Check continuity between E-01-5 and E-06-16(9)
Check continuity between E-01-6 and E-06-20(12) Check continuity between E-01-6 and E-06-20(12)
Continuity Continuity No No continuity continuity
(7) D (7) D isco isco nnect con nnect con nector E-06 nector E-06 of left of left traction traction
inverter and remove DSP cover inverter and remove DSP cover
Check DSP flat cable for looseness or wire Check DSP flat cable for looseness or wire
breakage breakage
Normal Abnormal Normal Abnormal
(5) Ch (5) Ch eck co eck co nnec nnec tor tor E- E- 06 06 of left of left traction inver traction inver ter for ter for
looseness looseness
Normal Abnormal Normal Abnormal
(3) Disconnect left traction motor cables from inverter (3) Disconnect left traction motor cables from inverter
Measure resistance of motor cables Measure resistance of motor cables
(U, V and W phases) (U, V and W phases)
Less Less than than 1 1 Ω Ω 1 1 Ω Ω or or more more
(6) Measure resistance between terminals of both cable (6) Measure resistance between terminals of both cable
ends (between U and U, V and V, and W and W) ends (between U and U, V and V, and W and W)
Less Less than than 1 1 Ω Ω 1 1 Ω Ω or or more more
(13) Dis (13) Dis conne conne ct connec ct connec tor E-02 tor E-02 of logic unit of logic unit
Check continuity between E-02-5 and E-06-3(3) Check continuity between E-02-5 and E-06-3(3)
Check continuity between E-02-6 and E-06-4(4) Check continuity between E-02-6 and E-06-4(4)
Continuity Continuity No No continuity continuity
Gate power supply Gate power supply
CAN CAN
(2) Check left traction inverter and motor for cable (2) Check left traction inverter and motor for cable
looseness and improper contact looseness and improper contact
Normal Abnormal Normal Abnormal
(16) Measure (16) Measure voltage between voltage between E-06-16(9) and E-06-16(9) and E-06-20(12) E-06-20(12)