45
replace the LC.
38
CONTAC
TOR
OPEN
Cause
The LC coil is driven by the controller, but it seems that the power contacts do not
close. In order to detect this condition the controller injects a DC current into the
motor and checks the voltage on power capacitor. If the power capacitors get
discharged it means that the main contactor is open.
Troubleshooting
- LC contacts are not working. Replace the LC.
- If LC contacts are working correctly, contact a Zapi technician.
52
PUMP I=0
EVER
Cause:
While the pump motor is running, the current feedback is constantly stuck to zero.
Troubleshooting:
- Check the motor connection, that there is continuity. If the motor connection is
opened, the current cannot flow, so the test fails and the error code is displayed;
- If everything is ok for what it concerns the motor, the problem could be in the
current sensor or in the related circuit.
53
STBY I
HIGH
Cause
In standby, the sensor detects a current value different from zero.
Troubleshooting
The current sensor or the current feedback circuit is damaged. Replace the
controller.
60
CAPACIT
OR
CHARGE
Cause
When the key is switched on, the inverter tries to charge the power capacitors
through the series of a PTC and a power resistance, checking if the capacitors are
charged within a certain timeout. If the capacitor voltage results less than 20% of
the nominal battery voltage, the alarm is raised and the main contactor is not
closed.
Troubleshooting
- Check if an external load in parallel to the capacitor bank, which sinks current
from the capacitors-charging circuit, thus preventing the caps from
charging well. Check if a lamp or a dc/dc converter or an auxiliary load is placed in
parallel to the capacitor bank.
- The charging resistance or PTC may be broken. Insert a power resistance across
line-contactor power terminals; if the alarm disappears, it means that
the charging resistance is damaged.
- The charging circuit has a failure or there is a problem in the power section.
Replace the controller.
62
TH.
PROTEC
TION
Cause:
The temperature of the controller base plate is above 85
°
C.
The maximum current is proportionally decreased with the temperature excess
from 85
°
C up to 105
°
C. At 105
°
C the current is limited to 0 A.
Summary of Contents for G3 Series
Page 1: ......
Page 4: ...1 I Main specifications of forklift trucks 1 External view of the truck P1 R G F C D ...
Page 29: ...26 Figure 4 1 Principle diagram of electric system CPD40 50 GB3Li ...
Page 30: ...27 Figure 4 2 Principle diagram of electric system CPD40 50 GB2Li ...
Page 109: ...106 5 Connect the battery 6 Close the side door ...
Page 110: ......