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AF9ZP0BA - EPS-ACW REACH TRUCK - User Manual
used as an Interrupt Request. This IR works as a synchronism
for SuC to start the first of 32 Inputs detections. When MuC has
completed the second A/D conversion (second of 32 AD
conversion in autoscan mode), it triggers the Synchro input to a
high level again. SuC raises this alarm when no falling edge is
detected on this synchro input longer than 90msec.
- Remedy:
Recycle the key. If it is repetitive, it reports a problem in the
controller. It could be an ESD problem too
.
44) CAN BUS WARN
Alarm 0xFFCE Group #3=206 [M,S]:
- Cause:
If a node does not receive the Traction Can Bus message (Can
ID 0x388 for MuC and 0x389 for SuC) longer than 200msec,
this alarm occurs.
- Remedy:
Problem can be in the Can Bus wires, or in the Can Bus
transceiver inside Traction, Eps or another unit in the truck.
Identification of the root of the problem needs a Can Bus
analyzer.
45) OUT1 STB I HIGH
Warning with eps on 0xFFEC=236 [M,S]:
- Cause:
If the output of the amplifier to measure the current in the load
connected to CNA#10 is not Zero at rest, this alarm occurs.
Zero for MuC is 0.5V (alarm when it is higher than 2V). For
MuC, output of the current amplifier increases when the current
is not null.
Zero for SuC is 4.5V (alarm when it is lower than 3V). For SuC,
the output of the current amplifier decreases when the current is
not null.
- Remedy:
It reports a problem in the controller.
46) OUT1 SRT/VOLT KO
Warning with eps on 0xFFEB=235 [M,S]:
- Cause:
This diagnosis is processed only at key on the Circuit in Fig.
15.46-1. Two tests:
Q3 is initially off: CNA#9 is expected to be lower than 5Vdc.
In case it isn’t this alarm occurs; otherwise Q3 is switched on.
Q3 is on: CNA#9 is expected to be higher than 60% of the DC
bus. In case it isn’t this alarm occurs.
- Remedy:
It reports either a short circuit to GND of the load connected to
CNA#9 or a problem in the controller (on safety switch Q3).
