Siemens SINAMICS G150 Operating Instructions Manual page 253

Settings to monitor the checkback signal from the main contactor or circuit breaker for 12-pulse infeed
The checkback contacts of the main contactors and the circuit breakers are connected in
series in the factory and wired to digital input 5 of the Control Unit.
After the drive unit has been commissioned, the checkback signal monitoring function must
be activated. This is realized using parameter p0860{Vector} = 722.5{Control_Unit}.
If the monitoring function for the main contactor or circuit breaker checkback signal is not
activated, then the drive could be powered up even if the main contactor or circuit breaker
on an individual system fails. This could overload and damage the input rectifiers on the
individual system.
NOTICE
When resetting (restoring) the parameterization to the factory setting, this setting must be
again made after the drive unit has been recommissioned.
Converter cabinet units
Operating Instructions, 03/2012, A5E03263466A
DANGER
5.5 First commissioning with the AOP30
Select parameter p0860 "Line contactor
checkback" and connect to digital input DI5.
<MENU> <Parameterization> <Single DO>
<2:VECTOR> <OK> select "p0860",
<change> select "{1:CU_G}" <OK>, select
"r0722" <OK>, select ".05 DI 5 (X132.2)"
<OK>
A confirmation window is displayed in which a
summary of the line contactor feedback is
displayed.
To confirm the set connection, choose <F5>.
Commissioning
251