Special Functions; Protective Functions - Siemens SINAMICS G180 Installation And Operating Instructions Manual

Operation

8.5 Special functions

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
"MCfunc"
NS minor fault
NS ready for
operation
NS Operation
enable
NS Operation
MS minor fault
MS ready for
operation
MS operation
enable
MS operation
Line contactor
The inverter controls its own line contactor. Note that the supply voltage for the control
electronics is tapped before the main contactor. Further information can be found in the section
108
Contactor functions for different parameters
The protection is ON for ...
"FAULT"
No
No
No
No
No
No
No
No
"OFF 1" "Controller release
no internal controller
voltage
- -
No -
No Yes
No Yes
- -
No -
No Yes
No Yes
Installation and operating instructions Sinamics G180
Operating Instructions, 05/2013, 4BS0751-001
"Speed On
no internal speed off
-
-
-
Yes
-
-
-
Yes