JLG X20JP - X600AJ Service Manual User Manual
Page 289
SECTION 6 - JLG CONTROL SYSTEM
3121623
– JLG Lift –
6-73
47
Epv2 not ok
Cause:
Evp2 driver is failed shorter
Solution:
Check the inverter feed
48
Epv1 not ok
Cause:
Evp driver is failed shorted
Solution:
Check the inverter feed
49
I=0 Ever
Cause:
Feedback current from motor’s sensor not constantly kept at 0
Solution:
Control the connection with the motor
50
Evp1 coil open
Cause:
Evp1 coil in not connected
Solution:
Check the main relay; replace the inverter
51
Evp2 coil open
Cause:
Evp2 coil in not connected
Solution:
Check the main relay; replace the inverter
53
STBY I high
Cause:
Fault detected in the inverter
Solution:
Usually it is a temporary anomaly due to a particular working condition. In case the anomaly
persists replace the inverter.
53
Wrong Zero MDI Can Code Alarm
Cause:
Wrong voltage signal from amplifiers
Solution:
Replace the Inverter
54
Logic Fail #1
Cause:
Overvoltage/Undervoltage condition has been detected
Solution:
Check the feed on the inverter (12 Volt and 48/72 Volt)
55
Logic fail #2
Cause:
Motor Voltage feedback circuits are damaged
Solution:
Replace the inverter
60
Capacitor Charge
Cause:
Problem in the inverter
Solution:
Control the inverter connexions and feeds; replace the inverter
61
High temperature
Cause:
Temperature rise in the inverter
Solution:
Allow a better cooling to the inverter. If the anomaly persists contact JLG after sales dept.
65
Motor temperat
Cause:
High motor temperature
Solution:
Stop the machine temporarily to enable motor cooling
67
Can Bus KO
Cause:
The inverter does not receive any information from Can Bus line
Solution:
Control the connections with the multi function tool
68
Smart Driver KO
Cause:
Smart driver is open, not able to provide EB positive
Solution:
Check the inverter feeds and connexions; replace the inverter
70
Encoder Error
Cause:
Anomaly detected on encoder (= engine rpm sensor)
Solution:
Control the rpm sensor connection. The anomaly may also be caused by a bearing fault.
72
Vmn low
Cause:
Motor output voltage lower than expected
Solution:
Check the connexion from the inverter to the electric motor; check the internal electric motor
connexion.
73
Thermis sensor KO
Cause:
The signal from the temperature sensor is higher than 4,95 Volt or lower than 0,1 Volt
Solution:
Usually it is a temporary anomaly due to a particular working condition. In case the anomaly
persists replace the inverter.
74
Driver shorted
Cause:
Anomaly to the relay supply.
Solution:
Control relay supply. Usually it is a temporary anomaly due to a particular working condition.
In case the anomaly persists replace the inverter.
74
Aux Batt short
Cause:
Coil on the AUX output is not correctly connected.
Solution:
Check the connexion with the main relay, check the inverter feeds; replace the inverter.
75
Driver shorted
Cause:
Anomaly to the relay supply.
Solution:
Control relay supply. Usually it is a temporary anomaly due to a particular working condition.
In case the anomaly persists replace the inverter.
76
Coil shorted
Cause:
Anomaly detected in the relay coil.
Solution:
Control the integrity of relay support.
Table 6-10.