Siemens SINAMICS PERFECT HARMONY GH180 Function Manual page 494

Troubleshooting Faults and Alarms
11.13 Dedicated I/O for Input Protection
Fault Display
Loss All HEX Fans
All HEX Fans On
492
Type Enable
F/A SOP
A SOP
Potential Causes and Corrective Actions
Cause
Drive initiated alarm/fault when the LossAllHexFan_O
SOP flag is set true and the LossAllHexFanEn_O flag is
true to enable it. The default is an alarm but it can be changed
to a fault by setting the LossAllHexFanWn_O flag to False
(true is an alarm). This is used in the Standard SOP for water-
cooled drives as an alarm.
Action
1. Check physical input connected to SOP flag.
2. Check sensor.
3. Check for faulty fan..
4. Check for obstruction.
Cause
Drive initiated alarm when the AllHexFansOn_O SOP flag
is set true and the AllHexFansOnEn_O flag is true to enable
it. The default is an alarm and it cannot be changed. This is
used in the Standard SOP for water-cooled drives as an alarm.
Action
1. Check physical input connected to SOP flag.
2. Check sensor.
3. Check for faulty fan.
4. Check for obstruction.
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