Faults
vacon • 187
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
8
600
System fault
Communication between control board
and power unit has failed.
Reset the fault and restart.
Should the fault re-occur, con-
tact the distributor near to you.
601
Communication between control board
and power unit has interference, but it
is still working.
602
Watchdog has reset the CPU
603
Voltage of auxiliary power in power unit
is too low.
604
Phase fault: Voltage of an output phase
does not follow the reference
605
CPLD has faulted but there is no
detailed information about the fault
606
Control and power unit software are
incompatible
Update software. Should the
fault re-occur, contact the dis-
tributor near to you.
607
Software version cannot be read. There
is no software in power unit.
Update power unit software.
Should the fault re-occur, con-
tact the distributor near to you.
608
CPU overload. Some part of the soft-
ware (for example application) has
caused an overload situation. The
source of fault has been suspended
Reset the fault and restart.
Should the fault re-occur, con-
tact the distributor near to you.
609
Memory access has failed. For exam-
ple, retain variables could not be
restored.
610
Necessary device properties cannot be
read.
614
Configuration error.
647
Software error
Update software. Should the
fault re-occur, contact the dis-
tributor near to you.
648
Invalid function block used in applica-
tion. System software and application
are not compatible.
649
Resource overload.
Error when loading parameter initial
values.
Error when restoring parameters.
Error when saving parameters.
9
80
Undervoltage
(fault)
DC-link voltage is under the voltage
limits defined.
• most probable cause: too low a
supply voltage
• AC drive internal fault
• defect input fuse
• external charge switch not
closed
NOTE!
This fault is activated only if the
drive is in Run state.
In case of temporary supply
voltage break reset the fault
and restart the AC drive. Check
the supply voltage. If it is ade-
quate, an internal failure has
occurred.
Contact the distributor near to
you.
81
Undervoltage
(alarm)
10
91
Input phase
Input line phase is missing.
Check supply voltage, fuses and
cable.
Table 147. Fault codes and descriptions
Fault
code
Fault
ID
Fault name
Possible cause
Remedy