Zapi COMBI AC1 User Manual

Troubleshooting:
The alarm ends when the acquisition is done.
13) “PEDAL WIRE KO”
Cause:
The SW continuously checks for the connection of the two supply ends of the
potentiometer in the accelerator. The test consists of reading the voltage
drop on a sense diode, connected between NPOT (CNA#23 in AmpSaab
connector) and GND and cascaded with the potentiometer: if the
potentiometer gets disconnected on PPOT (CNA#26 in AmpSaab connector)
or NPOT, no current flows in this sense diode and the voltage on the NPOT
connection collapses down.
When the NPOT voltage is less than 0.3V this alarm occurs. This alarm
occurs also when the NPOT voltage is higher than 2Vdc (to detect also the
condition of a broken sense diode).
Troubleshooting:
Check the voltage on NPOT and the potentiometer connections.
14) “TILLER OPEN”
Cause:
Warning: when the tiller is released, after a fixed period of time of standby
(30 seconds) the main contactor open.
Troubleshooting:
At the next travel request the warning disappear.
15) “CURRENT GAIN”
Cause:
The Maximum current gain parameters are at the default values, which
means the maximum current adjustment procedure has not been carried out
yet.
Troubleshooting:
Ask the assistance of a Zapi technician to do the correct adjustment
procedure of the current gain parameters.
16) “WAITING FOR NODE”
Cause:
The controller receives from the CAN the message that another controller in
the net is in fault condition; as a consequence the traction controller itself
cannot enter an operative status, but has to WAIT for the other controller
coming out from the fault status.
AEQZP0BA – COMBI AC1 - User Manual Page - 75/86

Zapi COMBI AC1 Specifications

General

Brand	Zapi
Model	COMBI AC1
Category	Inverter
Language	English