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INIT VMN LOW XX (MDI/LED code = 30)
Cause
Before closing the LC, the software checks the power bridge voltage without
driving it. The software expects the voltage to be in a "steady state" value. If it is
too low, this alarm occurs. The hexadecimal value "XX" identifies the faulty
phase:
01: phase U
02: phase V
03: phase W
Troubleshooting
Check the motor power cables.
Check the impedance between U, V and W terminals and -B terminal of the
controller.
Check the motor leakage to truck frame.
If the motor connections are OK and there are no external low impedance paths,
the problem is inside the controller. Replace it.
IQ MISMATCHED (MDI/LED code = 24)
Cause
The error between the estimated Iq (q-axis current) and the related set point is
out of range.
Troubleshooting
Ask for assistance to a Zapi technician in order to do the correct adjustment of
the motor parameters.
LC COIL OPEN (MDI/LED code = 22)
Cause
No load is connected between the NLC output (pin A26) and the positive voltage
(for example +KEY).
Troubleshooting
Check the wiring, in order to verify if LC coil is connected to the right connector
pin and if it is not interrupted.
If the alarm is still present, than the problem is inside the logic board; replace it.
LIFT+LOWER (MDI/LED code = 49)
Cause:
Both the pump requests (LIFT and LOWER) are active at the same time.
Troubleshooting:
Check that LIFT and LOWER requests are not active at the same time.
Check the LIFT and LOWER states through the TESTER function.
Check the wirings and the microswitches.
If the problem is not solved, replace the logic board.
LOGIC FAILURE #1 (MDI/LED code = 19)
Cause
The controller detects an undervoltage condition at the KEY input (pin A3).
Undervoltage threshold are indicated at paragraph 2.4
Troubleshooting (fault at startup or in standby)
AFNZPxxx– DUALACE2 NEW GENERATION – User Manual
Page 135/169
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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