AF9ZP0BA - EPS-ACW REACH TRUCK - User Manual
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detects a short circuit between one stepper motor channel
and GND).
- Remedy:
Check there is not a short circuit between CNA#20 or CNA#17
and GND. Check the stepper motor is a validated model one. If
it is, check the harness from the stepper motor to the controller.
If nothing is found replace the stepper motor and, in case the
problem remains, replace the controller.
39) WRONG RAM MEMORY
Alarm 0xFFD4=212 Group #0 [M,S]:
- Cause:
This alarm occurs two ways:
1. The process (execution of the code) omitted to pass through
one (at least) of the main steps of the code flow longer than
80msec (i.e. function to read the inputs, functions to
calculate the set points for the steering motor, function to
supervise the state of the steer, ISRs for actuating the motor
control).
OR
2. Deterministic Finite Automaton (DFA) is characterized by
state transitions. As a protective measure any state transition
is commanded by assigning two variables (state label and its
complement). These two variables identify the new state
(redundancy in the state label). This redundancy has been
thought in order to avoid that a failure in the RAM memory
leads to a wrong destination state for the DFAs. In case the
two state labels are inconsistent or not complemented in
between, this alarm occurs.
- Remedy:
If it is repetitive, it reports a problem in the controller.
40) CAN BUS KO M/S
Alarm 0xFFD7=215 Group #0 [M,S]:
- Cause:
MuC and SuC communicate via a local (embedded) Can Bus
communication system. If a node does not receive any
response from the other node longer than 100msec, this alarm
occurs.
- Remedy:
If it is repetitive, it is a problem in the steering controller.
41) PARAM RESTORE
Alarm 0xFFD5=213 Group #0 [M,S]:
- Cause:
This is a confirmation that a clear eeprom parameter was
correctly performed.
- Remedy:
Recycle the key
42) LOGIC SUPPLY ERR
Alarm 0xFFF0=240 Group #0 [S]:
- Cause:
This alarm occurs in case the 13.5V logic supply voltage to
drive the three phase power bridge is detected lower than
11Vdc.
- Remedy:
Recycle the key. If it is repetitive, it reports a problem in the
controller
43) W.D. SYNCHRO
Alarm 0xFFD1=209 Group #0 [S]:
- Cause:
Every 32 detections of the Inputs (analog and digital) (i.e. every
4msec) MuC generates a falling edge on an input of the SuC
