Commissioning The Dc Interface Without Option K90/K91 - Siemens SINAMICS S120 Equipment Manual

Options
8.20 L37, DC interface incl. pre-charging input circuit for the relevant DC link capacitance
8.20.3.4

Commissioning the DC interface without option K90/K91

If the cabinet does not contain a Control Unit (option K90/K91), terminal -X41:12 of the DC
interface must be connected by the customer to a digital input of the Control Unit assigned to
the controlled Motor Module. The 24 V DC supply for the checkback signal is provided via
terminal -X41.11 (see circuit diagram).
The digital input to which the checkback contact is assigned must be connected to the
"Infeed operation" parameter (p0864) of the drive object [Drive_1].
Example of digital input 3 on the Control Unit:
[Drive_1] p0864 = [CU] r722.3
The interconnection can be made with the STARTER commissioning tool or the AOP30
operator panel (option K08).
CAUTION
If parameter p0864 is not wired to the checkback signal, it is possible to operate the switch
under load. This can shorten the service life of the switch.
Note
The digital input parameter assignment is described in the List Manual and S120
Commissioning Manual.
394
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A