Siemens SINAMICS PERFECT HARMONY GH180 Function Manual page 481

Fault Display
xx 2H Temp Warn
xx = cell that is faulted
xx 2H Temp Fault
xx = cell that is faulted
xx AFE Therm Loss
xx = cell that has alarm
xx 2H T1 Thermistor Loss
xx = cell that has alarm
NXGPro+ Control Manual
Operating Manual, A5E50491925A
Type Enable Potential causes and corrective actions
A Fixed Cause
This alarm only applies when 4Q air cooled cells are installed. This alarm
is generated when the temperature of the IGBT H bridge as detected by
one of the integrated IGBT H Bridge NTC Thermistors exceeds the setpoint
of parameter 2537.
Action
1. Verify that proper cooling is provided for the drive. Inspect and verify
air filters are not clogged.
2. Replace filters if needed.
3. Verify that the ambient temperature in the environment in which the
drive is operated is within the operating conditions of the drive.
4. Verify the load does not exceed the maximum current capability of the
drive.
5. Reduce the load of the drive until the warning is reset.
F Fixed Cause
This alarm only applies when 4Q air cooled cells are installed. This alarm
is generated when the temperature of the IGBT H bridge as detected by
one of the integrated IGBT H Bridge NTC Thermistors exceeds the setpoint
of parameter 2538.
Action
1. Verify that proper cooling is provided for the drive. Inspect and verify
air filters are not clogged.
2. Replace filters if needed.
3. Verify that the ambient temperature in the environment in which the
drive is operated is within the operating conditions of the drive.
4. Verify the load does not exceed the maximum current capability of the
drive.
5. Wait at least 5 minutes and then try to reset the fault. If the fault
doesn't reset and if there are no other faults, bypass or replace the cell.
A Fixed Cause
This alarm only applies when 4Q air cooled cells are installed. This Alarm
is generated whenever one or more AFE Thermistors feedbacks cannot be
detected by the CCB. This is generally the case when the CCB is malfunc‐
tioning or the NTC wiring is incorrect/damaged.
Action
If there are no other faults, bypass or replace the cell.
A Fixed Cause
This Alarm only applies when 4Q air cooled cells are installed. This Alarm
is generated whenever one or more H Bridge Thermistor feedback cannot
be detected by the CCB. This is generally the case when the CCB is mal‐
functioning, or connection between CCB and AFE Extension board is not
present, or the NTC wiring is incorrect/damaged.
Action
If there are no other faults, bypass or replace the cell.
Troubleshooting Faults and Alarms
11.12 Cell Faults and Alarms
479