Siemens SINAMICS PERFECT HARMONY GH180 - Faults and Alarms

11.3 Faults and Alarms
If a fault or alarm condition exists, it will be annunciated on the keypad. The control software and
hardware sense faults and alarms, and store them within the alarm/fault log and the event log.
Faults are either detected via direct hardware sensing or by software algorithm.
The cell control system logic senses cell faults. The cell control system logic is located on the cell
control board in each output power cell. Each power cell has its own sense circuitry. The control
software interprets the cell faults and displays them and logs them based on the faulted cell and
the speci󹪝c fault within the cell.
All faults will immediately inhibit the drive from running and remove power from the drive to the
motor. Some faults that are user de󹪝ned can control the drive response via the SOP. Alarms are
annunciated and logged but usually do not inhibit the drive from operation.
Refer to the following table, to determine the drive response for the various fault and alarm
conditions.
WARNING
High Voltages
Disabling the drive does not necessarily remove voltage form the motor terminals.
The motor, especially if spinning, may have residual voltage on the terminals, and anything
connected to them.
Always adhere to the 󹪝ve safety rules and safety measures in Chapter Safety Notes.
Table 11-1 Fault/alarm type and drive responses
Type Drive responses
Fault or User Fault
• All IGBT gate drivers are inhibited.
• Motor coasts to stop.
• The fault is logged. Refer to the alarm/fault log menu (6210).
• The fault is displayed on the front panel.
• The keypad fault LED is ON.*
• Faults are logged to the event log and fault log.
Alarm or User Alarm
• Drive does not necessarily revert to the idle state via a coast or ramp stop unless speci󹪝cally required
to by the SOP.
• The alarm is logged. Refer to the alarm/fault log menu (6210).
• The alarm is displayed on the front panel.
• The keypad fault LED 󹪞ashes.*
* Refer to Chapter Software User Interface, Section Fault Reset key and LED Indicator for
information about the LED.
Troubleshooting Faults and Alarms
11.3 Faults and Alarms
NXGPro+ Control Manual
Operating Manual, A5E50491925A 443