72
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.
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
CAPACITOR
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.
PROTECTION
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.
Troubleshooting:
It is necessary to improve the controller cooling. To realize an adequate
cooling in case of finned heat sink important factors are the air flux and the
cooling-air temperature. If the thermal dissipation is realized by applying the
controller base plate onto the truck frame, the important factors are the
thickness of the frame and the planarity and roughness of its surface.
If the alarm occurs when the controller is cold, the possible reasons are a
thermal-sensor failure or a failure in the logic board. In the last case, it is
necessary to replace the controller.
65
MOTOR
TEMPERAT.
Cause:
This warning occurs when the temperature sensor is open (if digital) or if it
has overtaken the MAX MOTOR TEMP threshold (if analog) .
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: ......
