7.2 Fault-finding
The table below should be regarded as a “First-aid” box. Depending on the conditions in your installation,
there may be a wide variety of reasons for the fault. In multi-axis systems there may be further hidden cau
-
ses of a fault. Our customer support can give you further assistance with problems.
Fault possible causes Measures to remove the fault
HMI message:
communication
fault
—
wrong cable used
—
cable plugged into wrong position in
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 temperature ex
-
ceeded
—
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
—
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
F04 message:
feedback unit
—
feedback connector not inserted
—
feedback cable is damaged
—
check connector
—
check cable
F05 message:
undervoltage
—
supply voltage not present or too low
when servo amplifier is enabled
—
only enable the servo amplifier when the
mains supply voltage has been switched
on delay > 500 ms
F06 message:
motor tempera-
ture
— motor thermostat has been activated
— feedback connector is loose or break in
feedback cable
— wait until motor has cooled down, then
check why it became so hot
— tighten connector or new feedback cable
F07 message:
aux. voltage
— the aux. voltage produced by the servo
amplifier is incorrect
— return the servo amplifier to the manu-
facturer for repair
F08 message:
motor runs away
(overspeed)
— motor phases swapped
— feedback set up incorrectly
—
faulty connection to feedback unit
— correct motor phase sequence
— set up correct offset angle
—
check connector
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 short-circuit
—
replace motor
—
check shielding of brake cable
—
brake parameter set to "WITHOUT"
F13 message:
int. temperature
—
permissible internal temperature excee
-
ded
—
improve ventilation
F14 message:
output stage
fault
—
motor cable: 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 ex
-
ternal regen resistor
—
replace cable
—
replace motor
—
improve ventilation
—
return the servo amplifier to the manu
-
facturer for repair
—
remove short-circuit / ground short
F16 message:
mains BTB/RTO
—
enable was applied, although the supply
voltage was not present.
—
at least 2 supply phases are missing
—
only enable the servo amplifier when the
mains supply voltage is switched on
—
check electrical supply
F17 message:
A/D converter
—
error in the analog-digital conversion,
usually caused by excessive EMI
—
reduce EMI, check screening and
grounding
68 SERVOSTAR
®
400 Installation Manual
Appendix 07/05 Kollmorgen
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