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This alarm occurs when a mismatch is detected between the setpoint for the
overcurrent detection circuit (dependent on parameter DUTY PWM CTRAP, see
paragraph 8.2.6) and the feedback of the actual threshold value.
Troubleshooting
The failure lies in the controller hardware. Replace the logic board.
CURRENT GAIN (MDI/LED code = 92)
Cause:
The current gain parameters are at the default values, which means that the
maximum current adjustment procedure has not been carried out yet.
Troubleshooting:
Ask for assistance to a Zapi technician in order to do the adjustment procedure of
the current gain parameters.
DATA ACQUISITION (MDI/LED code = 0)
Cause:
Controller in calibration state.
Troubleshooting:
The alarm ends when the acquisition is done.
DRIVER SHORTED (MDI/LED code = 74)
Cause
The driver of the LC coil is shorted.
Troubleshooting
Check if there is a short or a low impedance pull-down between NLC (pin A12)
and -B.
The driver circuit is damaged; replace the logic board.
DRV. SHOR. EV XX (MDI/LED code = 21)
Cause:
One or more on/off valve drivers are shorted. For the meaning of code "XX", refer
to paragraph Errore. L'origine riferimento non è stata trovata..
Alarm not present on DualACE2.
Troubleshooting:
Check if there is a short circuit or a low impedance path between the negative
terminals of the involved coils and -B.
If the problem is not solved, replace the logic board.
EB. COIL OPEN (MDI/LED code = 43)
Cause:
No load is connected between the NEB output (pin
A28
(A18)) and the EB
positive terminal PEB (pin A27).
Troubleshooting:
Check the EB coil.
Check the wiring.
If the problem is not solved, replace the logic board.
EB. DRIV.OPEN (MDI/LED code = 42)
Cause:
AFNZPxxx – DUALACE2 NEW GENERATION – User Manual
Page 130/169
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Troubleshooting
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Do you have a question about the DUALACE2 NEW GENERATION and is the answer not in the manual?
Questions and answers
Como comprobar el funcionamiento del controlador dualac2 sin display
You can check the operation of the Zapi DUALACE2 NEW GENERATION controller without a display using the following methods:
1. Zapi Smart Console – Connect the Zapi Smart Console to the CAN bus to access diagnostics and parameter settings.
2. PC CAN Console – Use the PC CAN Console software to monitor and adjust controller settings.
3. Self-Diagnosis Feature – The controller performs self-diagnosis, and faults can be displayed using Zapi tools.
4. Alarm History Log – Check the log of alarms to review past faults and system behavior.
5. TESTER Function – Use the TESTER function to monitor key operational readouts.
These methods allow you to diagnose and verify the controller’s operation without an external display.
This answer is automatically generated
A brumby electrical truck that has a zapi inv.dace2, records the failure 244 "Warning Slave It depends on the supervisor uc", and the alarm 248 "Mc is Opened, eb is applied". On the other hand, the LED does not turn on, but in the manual I did not find the LED code. I would like more certainty about whether the failure is from the controller and the LED code for this Zapi model.
Failure 244 "Warning Slave" depends on the supervisor microcontroller (µC). No specific effect or troubleshooting steps are provided in the available context.
Alarm 248 "MC is Opened, EB is Applied" indicates that the main contactor (MC) is open, and the electric brake (EB) is applied. This typically occurs during start-up, standby, or other system states.
The LED code for this model is not explicitly provided in the available context.
This answer is automatically generated