Description
3.3 Accessories
Installation and Operating Instructions SINAMICS G180
44 Operating Instructions, 02/2019, 4BS0751-007
Bail switch S3 on peripheral board DI/DO
With the bail switch, you define as to whether in addition the second shutdown circuit should
be activated at terminal X2:24 - or not.
single-circuit trip, only via X2:19/:20
-circuit trip, additionally via X2:24/:3
Figure 3-2 Position of the bail switch S3 on peripheral board DI/DO
Parameter "P-INVERTER DATA/STO"
Using this parameter, you tell the inverter software as to whether you are using the "Safe
torque off" function with single-circuit or two-circuit trip. The parameter is not relevant for the
actual safety-related shutdown via the two shutdown paths in the inverter.
single-circuit trip, only via X2:19/:20
Parameter "STO = X2:20/24":
two-circuit trip, additionally via X2:24/:3
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