03/2010
B500 | B500-S
Page 146
Failures/Troubleshooting
Display symbol(s) Error/warning
cause
Controller
temperature
warning
Overheating
due to exces-
sive load >>
cooling down
phase
Motor tempe-
rature warning
Overheating
due to exces-
sive load >>
cooling down
phase
Joystick
warning
Joystick not in
zero position
when switch-
ing on
Fault with
hand control
device
Defective
joystick
Controller fault Defective
controller
Fault with
back adjust-
ment motor
Faulty cabling
or plug con-
tact, defective
actuator
Display symbol(s) Error/warning
cause
Drive motor
fault
Faulty cabling
or plug con-
tact, defective
actuator
Brake fault
Open brake
release/defec-
tive brake
Emergency
stop
Severe fault
caused by
malfunction in
the controller,
hand control
device and/or
drive motor
Table 7 Status and error messages
