Mitsubishi FB13PNT, Quick Start Manual

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2-26 2-26
501135 501135
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3. 3.9 9 Tr Trac acti tion on Mo Moto tor R r R.H .H., ., Ov Over er-c -cur urre rent nt (1 (15) 5)
Error code: 15 Error code: 15
Situation Situation
Display: "15". All Display: "15". All truck operations inhibited. Line contactor HOLD and ST contactor HOLD. truck operations inhibited. Line contactor HOLD and ST contactor HOLD.
Traction motor Traction motor and pump mot and pump motor operation or operation inhibited.If this fault oc inhibited.If this fault occurs before ST curs before ST contactor CL contactor CLOSE, all OSE, all
operations inhibited except mast lowering operation. operations inhibited except mast lowering operation.
Possible Possible
cause
cause
Faulty traction motor. (Contain the Faulty traction motor. (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 cable
Faulty contact or wire breakage of DSP flat cable in traction inverter. 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 raction motor raction 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
(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 (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
(11) Connect connector securely (11) Connect connector securely