Commissioning The Dc Interface With Option K90/K91; 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
The required auxiliary power supply is provided via the auxiliary voltage busbar. To ensure
that this functions properly, a digital input must be interconnected during commissioning.
Like all the other required connections, this is pre-wired in the cabinet.
If any signals are required (e.g. for checkback purposes or for activating other units), two
switching contacts can be used. Two normally-open contacts (NO) are available here for use
as required. The contacts switch in "Pre-charging" (contacts 53, 54) or "Operation" position
(contacts 63, 64). The auxiliary contacts can be loaded with a maximum of 3 A.
NOTICE
The DC interface must only be activated when the door is completely closed, otherwise the
switch coupling and the door handle could be damaged.
The door must only be opened in position "0".
In the "Pre-charging" and "1 (Operation)" positions, the door cannot be opened. Attempting
to open the door by force would damage the DC interface.
8.20.2.6

Commissioning the DC interface with option K90/K91

With option K90/K91, a checkback contact from the switch is factory-linked to digital input 3
of the Control Unit.
CAUTION
If changes are made to the factory-set parameters, you must verify that the "Infeed ready"
checkback signal is connected to digital input 3 on the Control Unit (p0864 = r722.3).
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.
8.20.2.7

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 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 [CU]:
[Drive_1] p0864 = [CU] r722.3
The interconnection can be made with the STARTER commissioning tool or the AOP30
operator panel (option K08).
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S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A