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2-24
2-24
3. 3.8 8
Tr Trac acti tion M
Error code: 14
Error code: 14
Display: "14". All
Display: "14". All truck operations inhibited. Line contactor HOLD and ST contactor HOLD.
Situation
Situation
Traction motor and pump mot
Traction motor
operations inhibited except mast lowering operation.
operations inhibited except mast lowering operation.
Faulty traction inverter. (U, V current sensor in traction inverter)
Faulty traction inverter. (U, V current sensor in traction inverter)
Possible
Possible
Faulty DSP card of traction inverter.
Faulty DSP card of traction inverter.
cause
cause
Faulty contact or wire breakage of DSP flat cable in traction inverter.
Faulty contact or wire breakage of DSP flat cable
Trigger of
Trigger of
the error
the error
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 .
code
code
Checks
Checks
(1) Disconnect battery plug, then perform inverter discharging work
(1) Disconnect battery plug, then perform inverter discharging work
(2) Follow the inverter testing procedure
(2) Follow the inverter testing procedure
(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
N
N
o
o
(5)
(5)
Replace DS
Replace
All
All powe
power cables
r cables
(7) Perform inverter discharging work
(7) Perform inverter discharging work
(8) Replace the DSP card with the original card again, then
(8) Replace the DSP card with the original card again, 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
on Mot otor C
or Cur urre rent S
nt Sen
enso
sor R.
truck operations inhibited. Line contactor HOLD and ST contactor HOLD.
and pump motor operation
Normal
Normal
r
r
m
m
a
a
l
l
A
A
b
b
n
n
o
o
r
r
m
m
DSP car
P
card of traction i
d of traction
inverter
nverter
conne
connect and turning on powe
ct and turning on
If fault (14) remains
If fault (14) remains
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
r R.H. H., Fa
, Faul ult (1
t (14) 4)
or operation inhibited. If this fault
inhibited. If this fault occurs before
in traction inverter.
(4) Replace traction inverter
(4) Replace traction inverter
a
a
l
l
(6) Secure DSP flat cable if loose
(6) Secure DSP flat cable if loose
power
r
Replace traction inverter if wire breaks
Replace traction inverter if wire breaks
occurs before ST contactor CL
ST contactor CLOSE, all
OSE, all
Abnormal
Abnormal
501138
501138
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