Siemens SINAMICS PERFECT HARMONY GH180 Function Manual page 478

Troubleshooting Faults and Alarms
11.12 Cell Faults and Alarms
Fault Display
xx AFE Configuration
xx = cell that is faulted
xx Diff. Temp Warning
xx = cell that has alarm
xx Diff. Temp Fault
xx = cell that is faulted
xx AFE Will Not Run
xx = cell that is faulted
476
Type Enable Potential causes and corrective actions
F Fixed Cause
The AFE configuration fault occurs when a cell is not configured properly.
The AFE configuration switch fault is applicable to 600 AP AFE, 750 AP, 750
AP 4Q, and 1375 HV AP cells.
Note: On 1375 HV AP cells, this causes an unresettable HV AP mismatch
fault as well.
Action
1. Check fiber optic link connections.
2. Replace CCB.
3. Contact Siemens customer service.
A Fixed Cause
600 AP AFE, 750V AP, 750V AP 4Q, and 1375 HV AP cells contain sensors
that monitor the inlet and outlet water temperature to the heat sink within
the cell. This difference between the inlet and outlet water temperature
passes from each CCB to the modulator. The main controller reads this
difference in temperature and compares the value to parameter AP diff
temp fault lvl (2596).
When the difference between the inlet and outlet water temperature ex‐
ceeds the value of parameter (2596), a Cell Diff Temp alarm occurs.
Action
1. Replace clogged components within water path, i.e., cell, hoses, input
reactor.
2. Replace power cell.
F Fixed Cause
600 AP AFE, 750V AP, 750V AP 4Q, and 1375 HV AP cells contain sensors
that monitor the inlet and outlet water temperature to the heat sink within
the cell. This difference between the inlet and outlet water temperature is
passed from each CCB to the modulator. The main controller reads this
difference in temperature and compares the value to parameter AP diff
temp fault lvl (2596).
When the difference between the inlet and outlet water temperature ex‐
ceeds the value of parameter (2596) by more than 2°C, a Cell Diff Temp
fault will occur.
Action
1. Replace clogged components within water path, i.e., cell, hoses, input
reactor.
2. Replace power cell.
F Fixed Cause
This fault occurs if the AFE portion is asked to run when the conditions
within the cell will not allow the cells AFE portion to run. This applies to
AFE cells only (600V AFE AP and 750V AP 4Q).
Action
1. Verify that all fiber optic links are correctly connected to the appropri‐
ate cells.
2. Verify input voltage feedback.
3. Apply medium voltage and use the "Set Angles" function to correctly
set the cell angles.
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