Zapi ACE0 2mC, User Manual

Page: 127 / 155

AF6ZP0CA – COMBIAC0 & ACE0 2uC – User Manual Page – 127/155
Troubleshooting:
Check in the HARDWARE SETTINGS list the value of those parameters.
VACC NOT OK
(MDI/LED code = 78)
Cause:
At key-on and immediately after that, the travel demands have been turned
off. This alarm occurs if the ACCELERATOR reading (in TESTER function) is
above the minimum value acquired during the PROGRAM VACC procedure.
Troubleshooting:
-
Check the wirings.
- Check the mechanical calibration and the functionality of the accelerator
potentiometer.
- Acquire the maximum and minimum potentiometer value through the
PROGRAM VACC function.
- If the problem is not solved, replace the logic board.
VACC OUT RANGE
(MDI/LED code = 85)
Cause:
-
The CPOT input read by the microcontroller is not within the MIN VACC
÷ MAX VACC range, programmed through the PROGRAMM VACC
function (see paragraph 9.1).
- The acquired values MIN VACC and MAX VACC are inconsistent.
Troubleshooting:
-
Acquire the maximum and minimum potentiometer values through the
PROGRAM VACC function. If the alarm is still present, check the
mechanical calibration and the functionality of the accelerator
potentiometer.
- If the problem is not solved, replace the logic board.
VDC LINK OVERV.
(MDI/LED code = 77)
Cause
This fault is displayed when the controller detects an overvoltage condition.
Overvoltage threshold depends on the nominal voltage of the controller.
Nominal voltage 24V 36/48V 72/80V 96V
Overvoltage threshold 35V 65V 115V 130V
As soon as the fault occurs, power bridge and MC are opened. The condition
is triggered using the same HW interrupt used for undervoltage detection, uC
discerns between the two evaluating the voltage present across DC-link
capacitors:
- High voltage  Overvoltage condition
- Low/normal voltage  Undervoltage condition
Troubleshooting
If the alarm happens during the brake release, check the line contactor
contact and the battery power-cable connection.
VDC OFF SHORTED
(MDI/LED code = 88)
Cause
The logic board measures a voltage value across the DC-link that is
constantly out of range, above the maximum allowed value.