Siemens bt300 Operator's Manual page 167

Fault Fault ID Fault Name
Code
8 600
System fault
602
603
604
605
606
607
608
609
610
647
648
649
9 80
Undervoltage (fault)
81
Undervoltage (alarm)
10 91
Input phase
11 100
Output phase
supervision
13 120
AC drive
undertemperature
(fault)
121
AC drive
undertemperature
(alarm)
Siemens Industry, Inc.
Building Technologies
Possible Cause
Communication between control board and power
unit has failed.
Watchdog has reset the CPU.
Voltage of auxiliary power in power unit is too low.
Phase fault: Voltage of an output phase does not
follow the reference.
CPLD has faulted but there is no detailed
information about the fault.
Control and power unit software are incompatible.
Software version cannot be read. There is no
software in the power unit.
CPU overload. Part of the software (for example,
the application) has caused an overload situation.
The source of the fault has been suspended.
Memory access has failed. For example, retain
variables could not be restored.
Necessary device properties cannot be read.
Software error.
Invalid function block used in application. System
software and application are not compatible.
Resource overload.
Error when loading parameter initial
values.
Error when restoring parameters.
Error when saving parameters.
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.
Input line phase is missing.
Current measurement has detected that there is
no current in one motor phase.
Too low temperature measured in power unit's
heatsink or board.
Heatsink temperature is under -10°C (14°F).
Siemens BT300 HVAC Drive
Chapter 5 - Fault Tracing
Fault Codes
Remedy
Reset the fault and restart.
Should the fault re-occur, contact your
distributor.
Update software. Should the fault re-occur,
contact your distributor.
Update power unit software. Should the fault
re-occur, contact your distributor.
Reset the fault and restart.
Should the fault re-occur, contact your
distributor.
Update the software. Should the fault re-
occur, contact your distributor.
In case of temporary supply voltage break
reset the fault and restart the AC drive.
Check the supply voltage. If it is adequate, an
internal failure has occurred. Contact your
distributor.
Check supply voltage, fuses and cable.
Check motor cable and motor.
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DPD01809
2016-06-07