Diagnosis; Alarms Displayed On Console - Zapi SEM1 User Manual

Description of the alarms signalled by the diagnostic LED. The alarm code is shown
within brockets. A detailed description is given in section 6.1.
1 Blink:
2 Blinks:
3 Blinks:
4 Blinks:
5 Blinks:
6 Blinks:
7 Blinks:
32 Blinks:
LED ON:
1. WATCH DOG
The test is made in both running and standby. It is a self-diagnosing test within the
logic. If an alarm should occur, replace the logic.
2. EEPROM KO
Fault in the area of memory in which the adjustment parameters are stored; this
alarm inhibits machine operation. If the defect persists when the key is switched
OFF and ON again, replace the logic. If the alarm disappears, remember that the
parameters stored previously have been cancelled and replaced by the default
values.
3. PEDAL WIRE KO
This alarm is signalled if a potentiometer fault is detected (NPOT or PPOT cable is
interrupted).
4. INCORRECT START
An incorrect starting sequence. Possible causes:
a. running microswitch or handle microswitch failure;
b. error in the starting sequence made by the operator;
c. incorrect wiring.
5. VACC NOT OK
The test is made while in standby. This alarm indicates that the accelerator voltage
is 1V greater than the minimum stored value. Possible causes:
a. a potentiometer wire is interrupted.
b. the potentiometer is not correctly calibrated.
c. the potentiometer is defective (interrupted).

6 DIAGNOSIS

Logic failure (WATCHDOG, EEPROM KO).
Running request on startup or error in handle/seat sequence
(INCORRECT START).
VMN or capacitor charge failure.
(CAPACITOR CHARGE, VMN NOT OK).
Failure of the accelerator (PEDAL WIRE KO, VACC NOT OK).
Failure of current sensor (I HIGH AT STAND, I=0 EVER,
HIGH FIELD CUR., NO FIELD CUR.).
Failure of contactor driver (DRIVER SHORTED, COIL SHORTED).
Excessive temperature, higher than 70°C (HIGH TEMPERATURE).
Low battery charge (BATTERY LOW).
Double direction request (FORW + BACK).

6.1 ALARMS DISPLAYED ON CONSOLE

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