DC link components
7.1 Control Supply Module CSM
168
SINAMICS S120 Combi
Manual, (GH9), 07/2016, 6SL3097-4AV00-0BP5
The control supply module (CSM) is connected to the line supply (3-ph. 380 V AC –10 % to
480 V AC +10 %) via interface X1 (screw terminals 0.2 to 4 mm
2
) This connection should
preferably be made without using an isolating device (e.g. contactor).
The CSM has an internal line filter (Class A for TN line supplies), and the pre-charging circuit
for the DC link inside the unit is electrically isolated from the 24 V supply.
The CSM also features a current limitation function. When using cables with a cross-section
of 2.5 mm
2
, no additional protection is required on the 24 V side if a type XLPE or EPR
cable, or a cable with a similar quality and with a minimum thermal stability of up to 90 °C is
used.
Note
If a selectively tripping, AC/DC
-sensitive RCCB is used for the drive line-up, the Control
Supply Module must always be c
onnected to the line supply downstream of this circuit
Note
Connecting to the line supply
When configuring the line supply for the Control Supply Module, it should be noted that the
CSM must not be connected to the line supply after the S120 C
ombi has been connected to
the line supply. When charging, this prevents the DC link from being immediately loaded by
the CSM.
The DIP switch must be set to "single operation" to connect the Control Supply Module to the
S120 Combi drive line-up. The connection can be established as shown below.
The CSM must be connected to the S120 Combi Power Module and the expansion axes via
the DC link busbars as well as also via the 24 V busbars. The red 24 V connector from the
accessories pack provided must be inserted under all circumstances.
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