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CAN bus interface is isolated with Opto-couplers and internal +5 V supply from
isolated DC/DC.
The CAN driver gives maximum amplitude on the CAN_H to CAN_L signal.
Ground reference for CAN, CAN_GND, must be routed together with CAN_H and
CAN_L in the CAN-bus to avoid communication problems.
There is internal high impedance connection between CAN_GND and B- for ESD
protection and EMC suppression components.
Incorrect use of isolation - risk of personnel injury. Isolation is only for
increased noise immunity when running high current to the motor. The
isolation must not be used for safety.
i.e. CAN_GND and B- shall be externally connected together in one point in
the vehicle system.
Protection
CAN bus interface is protected against accidental connection to +B and –B and
ESD protected.
Connector position
The CAN wiring shall consist of a pair of twisted wires for CANH and CANL.
The CAN wiring shall have a characteristic impedance of 60 Ω; both physical ends
of the CAN bus shall be terminated with 120 Ω between CANH and CANL for the
best possible noise immunity.
AFNZPxxx– DUALACE2 NEW GENERATION – User Manual
Standard
A20, A21, A22
Premium
A30, A31, A32
Page 49/169
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Troubleshooting
Need help?
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