AKD Fault Card | 2 Fault and Warning Messages
Fault
(“F”)
Warning
(“n”)
Message/Warning Cause Remedy Drive
Respons-
e to Fault
F628 AKD-C Front door packet
not received on String 1.
A data packet has not
been received by the
AKD-N or AKD-C
(String 1)
Check cables and clear the
fault.
Disable
Drives
and
Unpower
Strings
F629 AKD-C Front door packet
not received on String 2.
A data packet has not
been received by the
AKD-C (String 2)
Check cables and clear the
fault.
Disable
Drives
and
Unpower
Strings
F630 FPGA cyclic read fault. FPGA-to-firmware data
access error.
DRV.CLRFAULTS. If
issue persists, contact
technical support.
Disable
power
stage
F631 Issue command timed
out.
Processing a command
took longer than the
command timeout (10-
60 sec depending on the
command).
Try reducing the CPU load
of the drive by deactivating
unused features or chan-
ging the fieldbus cycle
time.
Controlled
stop
F634 Regen test failed. The test for the regen
resistor failed.
Check cabling of regen res-
istor and run
REGEN.TEST command
again.
Disable
power
stage
F701 Fieldbus Runtime. Runtime com-
munication fault.
Check fieldbus con-
nections (X11), settings,
and control unit.
Controlled
stop
F702
n702
Fieldbus Communication
lost.
All fieldbus com-
munication was lost.
Check fieldbus con-
nections (X11), settings,
and control unit.
Controlled
stop
F703 Emergency timeout
occurred.
Motor did not stop in the
timeout defined.
Change timeout value,
change stop parameters,
improve tuning.
Disable
power
stage
F706
n706
Fieldbus cyclic setpoints
missing.
Fieldbus master has
stop sending setpoints
within a certain timeout
values.
Check the fieldbus con-
nection and wiring.
Controlled
stop
27 Kollmorgen | kdn.kollmorgen.com | November 2019
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