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AF9ZP0BA - EPS-ACW REACH TRUCK - User Manual
of this common voltage on its long duration instance.
- Remedy:
Try to disconnect all the motor terminals from the controller,
recycle the key and read STATUS #5. If the long duration
instance (i.e. 1ST value) is in a window 8 to 13.5Vdc, the
problem is a dispersion (lost of insulation of the motor).
Otherwise replace the controller.
Figure 15.31-1
32) CAPACITOR CHARGE
Alarm 0xFF3C=60 Group #0 [M]:
- Cause:
This alarm occurs at key on in case the DC Bus (rail capacitors)
doesn’t reach a minimum value of 14Vdc within 3.2secs despite
it is expected to do. STATUS #5 supplies the real time value of
the battery link (+B) in its short duration instance (2ND value in
Fig. 15.31-1).
- Remedy: Some
cases:
a) if this alarm is only reported in the steering controller, check
the continuity of cables to CNA#3-4-5 from battery source and
eps.
b) if the cables to CNA #3-4-5 are OK, measure the voltage
between CNA#3-4-5 and –B within 3 sec after key-on. Only in
case the voltage measured is higher than 14Vdc (and short
duration instance on STATUS#5 is lower instead) replace the
controller.
c) In case the voltage measured between CNA#3-4-5 and –B is
close to 0 there are two possibilities:
1. Short circuit on the DC rail and –B inside the eps
(disconnect CNA#3-4-5 and measure the voltage in the
traction controller DC bus (+B to –B posts): replace eps in
case DC bus voltage of the traction controller raises up to
higher than 14Vdc.
2. Short circuit on the DC rail and –B on another unit in the
truck.
33) POSITION ERROR
Alarm 0xFFE4=228 Group #2 [M]:
- Cause:
This alarm occurs for an error in the redundant test of the
