Siemens SINAMICS G180 - Special Functions; Protective Functions

Operation
8.5 Special functions
Installation and Operating Instructions SINAMICS G180
156 Operating Instructions, 02/2019, 4BS0751-007
8.5
Special functions
8.5.1
Protective functions
Main contactor
If you install a main contactor in your application, this can be controlled using the inverter
software.
In this case, the coil is controlled via a digital output. Feedback from the normally open
contact of the main contactor is realized via digital input -X2:8.
You can provide the main contactor on the mains power side, NS in short, or on the motor
side, MS in short. The "P-INV. BEHAVIOUR/MCfunc" parameter specifies when the main
contactor will be switched and where the main contactor must be installed.
Example: Shutdown only in the case of an error, installation on the mains power or motor
side.
The following settings are possible:
Table 8- 7 Contactor functions for different parameters
The protection is ON for ...
"MCfunc"
"FAULT"
"OFF 1"
"Controller release
no internal controller
voltage
"Speed On
no internal speed off
NS minor fault
No
-
-
-
NS ready for
operation
No No - -
NS Operation
enable
No No Yes -
NS Operation
No
No
Yes
Yes
MS minor fault
No
-
-
-
MS ready for
operation
No No - -
MS operation
enable
No No Yes -
MS operation
No
No
Yes
Yes