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Appendix
7.2
Removing faults / warnings
The table below should be regarded as a "First-aid" box. Depending on the conditions in your instal -
lation, there may be a wide variety of reasons for the fault. In multi-axis systems there may be furt-
her hidden causes of a fault. Our customer service can give you further assistance with problems.
Fault
HMI message:
communicati-
on fault
F01 message:
heat sink
temperature
F02 message:
overvoltage
F04 message:
feedback unit
F05 message:
undervoltage
F06 message:
motor tempe-
rature
F07 message:
aux. voltage
F08 message:
motor runs
away
(overspeed)
F11 message:
brake
F13 message:
internal tem-
perature
F14 message:
output stage
fault
96
02/06
possible causes
— wrong cable used
— cable plugged into wrong position
in servo amplifier or PC
— wrong PC interface selected
— permissible heat sink temperature
exceeded
— 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
— feedback connector not inserted
— feedback cable is broken, crushed or
otherwise damaged
— supply voltage not present or too low
when servo amplifier is enabled
— motor thermostat has been activated
— feedback connector is loose or break in
feedback cable
— the aux. voltage produced by the servo
amplifier is incorrect
— motor phases swapped
— feedback set up incorrectly
— 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"
— permissible internal temperature
exceeded
— motor cable has short-circuit/ground
short
— motor has short-circuit / ground short
— output module is overheated
— output stage is faulty
— short-circuit / short to ground in the
external regen resistor
Measures to remove the cause of
the fault
— use null-modem cable
— plug cable into the correct sockets
on the servo amplifier and PC
— select correct interface
— improve ventilation
— shorten the braking time RAMP or
use an external regen resistor
with a higher power rating and
adjust the regen power parameter
— use mains transformer
— check connector
— check cable
— only enable the servo amplifier
when the mains supply voltage
has been switched on
delay > 2000 ms
— wait until motor has cooled down,
then check why it became so hot
— tighten connector or use
new feedback cable
— return the servo amplifier to the
manufacturer for repair
— correct motor phase sequence
— set up correct offset angle
— remove short-circuit
— replace motor
— check shielding of brake cable
— brake parameter set to
"WITHOUT"
— improve ventilation
— replace cable
— replace motor
— improve ventilation
— return the servo amplifier to the
manufacturer for repair
— remove short-circuit / ground
short
AX2040/2070 Installation Manual
Beckhoff
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