Fault
(“F”)
Warning
(“n”)
Message/Warning Cause Remedy Drive
Respons-
e to Fault
F534 Failed to read motor para-
meters from feedback
device.
Motor either does not
have motor feedback
memory, or the motor
feedback memory is not
programmed properly so
the parameters cannot
be read.
Try to read parameters
again by clicking the
Dis-
able
and
Clear Faults
but-
ton, or by issuing the
DRV.CLRFAULTS com-
mand. If this attempt is not
successful, then set
MOTOR.AUTOSET to 0
(off) and program the para-
meters using the setup wiz-
ard or manually set up the
parameters. If the motor
has motor memory (Biss
Analog, Endat, and SFD
motors have motor
memory), return the motor
to have the memory pro-
grammed.
Dynamic
braking
F535 Power-board over-tem-
perature fault.
The power-board tem-
perature sensor indic-
ates more than 85 °C.
Reduce the load of the
drive or ensure better cool-
ing.
Disable
power
stage
F536 Standby power supply
fault.
Standby voltage circuit
overloaded.
Check total 24 V power
load of AKD-N in the
strings (sum of drive and
motor brake supply). The
AKD-C must be power-
cycled to recover from this
fault.
Disable
Drives
F537 Precharge fault. Precharge process
could not be performed
in a reasonable amount
of time.
Look for a shortcut in the
string (cable) or exchange
hardware
Disable
Drives
and
Unpower
Strings
F541
N541
AC input phase 1 miss-
ing.
Mains supply failure
detected, phase L1
missed on AKD-C.
Check power connector
and power source.
Disable
Drives
and
Unpower
Strings
F542
N542
AC input phase 2 miss-
ing.
Mains supply failure
detected, phase L2
missed on AKD-C.
Check power connector
and power source.
Disable
Drives
and
Unpower
Strings
F543
N543
AC input phase 3 miss-
ing.
Mains supply failure
detected, phase L3
missed on AKD-C.
Check power connector
and power source.
Disable
Drives
and
Unpower
Strings
AKD Fault Card | 2 Fault and Warning Messages
Kollmorgen | kdn.kollmorgen.com | November 2019 24
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