Siemens SINAMICS G120 Operating Instructions Manual page 346

Corrective maintenance
8.3 If the converter no longer responds
Case 2
● The motor is switched off.
● You cannot communicate with the inverter, either via the operator panel or other
interfaces.
● The LEDs flash and are dark - this process is continually repeated.
Procedure
Proceed as follows to restore the inverter factory settings:
1. Remove the memory card if one is inserted in the inverter.
2. Switch off the inverter power supply.
3. Wait until all LEDs on the inverter go dark. Then switch on the inverter power supply
again.
4. Wait until the LEDs flash orange.
5. Repeat steps 2 and 3 as often as required until the inverter outputs fault F01018.
6. Now set p0971 = 1.
7. Switch off the inverter power supply.
8. Wait until all LEDs on the inverter go dark. Then switch on the inverter power supply
again.
The inverter now powers up with the factory settings.
9. Recommission the inverter.
You have restored the inverter factory settings.
The motor cannot be switched-on
If the motor cannot be switched-on, then check the following:
● Is a fault present?
If there is, then remove the fault cause and acknowledge the fault.
● Has the inverter been completely commissioned p0010 = 0?
If not, the inverter is e.g. still in a commissioning state.
● Is the inverter reporting the "ready to start" status (r0052.0 = 1)?
● Is the inverter missing some enable signals (r0046)?
● How does the inverter receive its setpoint and commands?
Digital inputs, analog inputs or fieldbus?
346
Converter with CU230P-2 Control Units
Operating Instructions, 04/2015, FW V4.7 SP3, A5E34257946B AB