JLG X550AJ Operator Manual User Manual

Page 127

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SECTION 6 - GENERAL SPECIFICATIONS AND OPERATOR MAINTENANCE

3128791

– JLG Lift –

6-25

53

STBY I high
Cause – Internal fault detected in the inverter.
Solution – This is generally a temporary problem due to certain-
working conditions. If problem persists, replace inverter.

60

Capacitor Charge
Cause – Internal fault in the inverter.
Solution – Check connections and motor phases.

61

High temperature
Cause – High temperature inside the inverter.
Solution – Improve cooling to inverter. If fault persists, contact
JLG after-sales service.

65

Motor temperature
Cause – High motor temperature.
Solution – Temporarily stop machine to allow motor to cool down.

67

Can Bus KO
Cause – Inverter doesnft receive any information from Can Bus
line.
Solution – Check connections using multifunction tester.

70

Encoder Error
Cause – Problem detected with encoder (=motor speed sensor).
Solution – Check speed sensor connection. Anomaly may also
have been caused by fault with bearing.

Table 6-10. Inverter Fault Codes

CODE

DESCRIPTION

73

Thermis sensor KO
Cause – Signal from temperature sensor greater than 4.95 Volts or
less than 0.1 Volt.
Solution – This is generally a temporary problem due to certain
working conditions. If problem persists, replace inverter.

74

Driver shorted
Cause – Relay power supply fault.
Solution – Check relay power supply. This is generally a temporary
problem due to certain working conditions. If problem persists,
replace inverter.

75

Driver shorted
Cause – Relay power supply fault.
Solution – Check relay power supply. This is generally a temporary
problem due to certain working conditions. If problem persists,
replace inverter.

76

Coil shorted
Cause – Problem detected with relay coil.
Solution – Make sure relay coil is intact.

78

VACC not OK
Cause –
Solution – This is generally a temporary problem due to certain
working conditions. If problem persists, replace inverter.

Table 6-10. Inverter Fault Codes

CODE

DESCRIPTION

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