EP Equipment LIST JX0, Руководство по обслуживанию

Страница: 60 / 206

47
REV. 07/2019
DRIVE SYSTEM
5
5.5.2 Faults and Causes
1
Fault Motor does not rotate
Cause Speed encoder or its circuit failure
2
Fault On load, motor speed is turning
slow
Cause Speed encoder or its circuit failure
5.5.3 Checking and Testing
Checking
- Check if the speed encoder and the appear-
ance of cables are in good condition, and if
the plug connection is secure;
- The vehicle is powered on, measure the volt-
age between pin connector (19#) and (20#)
with a multimeter, normally should be 24V;
Testing
- Remove the speed encoder and check if
its sensing surface is parallel to the round
section of magnet.
-
-
Check if the connection between 30# and 31#
is reversed. (If the two circuits are connected
reversely, the controller will report for failure,
and the handheld unit will display fault code:
177 ENCODER ERROR)
Check “Encoder Right” readings on TESTER
Menu (
DUALPMX
&HP
).(see Section 8.13)
Operate the forklift, if the display is always “0”:
Speed encoder failure, replace the encoder.
5.5.4 Control Circuit Troubleshooting
Control Circuit (Figure 50218)
Check if the circuit is broken by using a multi-
meter:
-
- Set the multimeter to ON-OFF;
Check if #20/#31/#30/#19 circuit (circuit
between speed encoder and controller) is
conducted.