Siemens SINAMICS G120 Operating Instructions Manual page 264

Alarms, faults and system messages
10.3 Faults
The fault buffer can accept up to eight actual faults. The next to last fault is overwritten if an
additional fault occurs after the eighth fault.
Figure 10-7
Fault acknowledgement
In most cases, you have the following options to acknowledge a fault:
● Switch-off the inverter power supply and switch-on again.
● Press the acknowledgement button on the operator panel
● Acknowledgement signal at digital input 2
● Acknowledgement signal in bit 7 of control word 1 (r0054) for Control Units with fieldbus
Faults that are triggered by monitoring of hardware and firmware inside the inverter can only
be acknowledged by switching off and on again. You will find a note about this restricted
option to acknowledge faults in the fault list of the List Manual.
262
Complete fault buffer
interface
Operating Instructions, 01/2011, FW 4.4, A5E02999804A AB
SINAMICS G120C Inverter