
9.8 Trouble Shooting
The table below should be regarded as a “First-aid” box. There may be a wide variety of
reasons for the fault, depending on the conditions in your installation.
In multi-axis systems there may be further hidden causes of a fault.
Our customer service can give you further assistance with problems.
Fault Possible causes Measures
HMI message:
Communicati
-
on fault
— wrong cable used
— cable plugged into wrong position
on servo amplifier or PC
— wrong PC interface selected
— use null-modem cable
— plug cable into the correct
sockets on the servo amplifier
and PC
— select correct interface
F01 message:
Heat sink
temperature
— permissible heat sink tempe-
rature exceeded
— improve ventilation
F02 message:
Overvoltage
— regen power is insufficient.
Regen power limit was reached
and the regen resistor was
switched off.
This causes excessive voltage
in the DC bus link circuit.
— supply voltage too high
— reduce the RAMP braking
time.
Use an external regen resistor
with a higher power rating and
adjust the regen power
parameter
— use a supply transformer
F04 message:
Feedback Unit
— feedback connector not properly
inserted
— feedback cable is broken,
crushed, or otherwise damaged
— feedback unit is damaged or
wrongly configured
— check connectors
— check cables
— check feedback unit and
settings
F05 message:
Undervoltage
— supply voltage is not present, or
too low when the servo amplifier
is enabled
— only ENABLE the servo
amplifier when the electrical
supply voltage has been
switched on delay > 500 msec
F06 message:
Motor
temperature
— motor thermostat has been
activated
— feedback connector is loose, or
a break in the feedback cable
— wait till motor has cooled
down, then check why it
became so hot.
— screw connector up tight, or
use new feedback cable
F07 message:
Aux. voltage
— the aux. voltage produced by the
servo amplifier is incorrect
— return the servo amplifier to
the manufacturer for repair
F08 message:
Overspeed
— motor phases swapped
— feedback device set up
incorrectly
— correct motor phase sequence
— set up the correct offset angle
F09 message:
EEPROM
— checksum error — save data to EEPROM again
to force a new calculation
F11 message:
Brake
— short-circuit in the supply cable
for the motor-holding brake
— motor-holding brake is faulty
— fault in brake cable
— no brake connected, although the
brake parameter is set to WITH
— remove the short-circuit
— replace motor
— check shielding of brake cable
— set brake parameter to
WITHOUT
82 SERVOSTAR
®
300 Product Manual
Setup 09/2006 Kollmorgen
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