2-38
2-38
501136
501136
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3.1
3.14
4 Pu
Pump M
mp Moto
otor Cu
r Curre
rrent S
nt Sens
ensor F
or Faul
ault (34
t (34))
Error code: 34
Error code: 34
Situation
Situation
Display: "34". All
Display: "34". 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
inhibited. If this fault occurs before
occurs before ST contactor CL
ST contactor CLOSE, all
OSE, all
operations inhibited except mast lowering operation.
operations inhibited except mast lowering operation.
Possible
Possible
cause
cause
Faulty pump inverter. (U, V current sensor in pump inverter)
Faulty pump inverter. (U, V current sensor in pump inverter)
Faulty DSP card of pump i
Faulty DSP card of pump inverter.
nverter.
Faulty contact or wire breakage of DSP flat
Faulty contact or wire breakage of DSP flat cable in pump inverter.
cable in pump 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 pump inverter
(4) Replace pump inverter
(6) Secure DSP flat cable if loose
(6) Secure DSP flat cable if loose
Replace pump inverter if wire breaks
Replace pump inverter if wire breaks
(3) Remove DSP cover of pump inverter
(3) Remove DSP cover of pump 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 pump inverter
(5) Replace DSP card of pump 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 (34) remains
If fault (34) 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
(8) Replace the DSP card with
the origi
the origi
nal card again
nal card again
, then
, then
replace the pump inverter
replace the pump 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
Содержание FB13PNT
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