Siemens SINAMICS PERFECT HARMONY GH180 Function Manual page 470

Troubleshooting Faults and Alarms
11.12 Cell Faults and Alarms
Fault display
xx T2 NTC Temp Warning
xx = cell that has alarm
xx T1 NTC Temp Fault
xx = cell that is faulted
xx T2 NTC Temp Fault
xx = cell that is faulted
xx Humidity Alarm
xx = cell that has alarm
xx 2Q Phases Shorted
xx = cell that is faulted
468
Type Enable Potential causes and corrective actions
A Fixed Cause
The T2 NTC temperature has surpassed the alarm threshold.
Action
1. Verify if the cooling fans are operating.
2. Verify the load current doesn't exceed the cell current capability.
3. Verify if the drive ambient temperature is above the ambient alarm
level temperature.
4. Verify if filters are clogged and / or need to be replaced.
F Fixed Cause
The IGBT1 NTC temperature has exceeded the fault temperature thresh‐
old.
Action
1. Verify if the cooling fans are operating.
2. Verify the load current doesn't exceed the cell current capability.
3. Verify if the drive ambient temperature is above the ambient alarm
level temperature.
4. Verify if filters are clogged and / or need to be replaced.
F Fixed Cause
The IGBT2 NTC temperature has exceeded the fault temperature thresh‐
old.
Action
1. Verify if the cooling fans are operating.
2. Verify the load current doesn't exceed the cell current capability.
3. Verify if the drive ambient temperature is above the ambient alarm
level temperature.
4. Verify if filters are clogged and / or need to be replaced.
A Fixed Cause
The humidity sensor reading exceeded the alarm level threshold.
Action
1. Verify if the load drive ambient relative humidity is above the humidity
alarm level threshold.
2. Replace the CCB.
F Fixed Cause
The cell has sensed that there is a short-circuit condition between two
phases of the input voltages to the cell.
Action
1. Verify if the condition is due to an external short-circuit to the cell.
2. It is recommended to have the cell repaired or replaced.
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