Adjusting The Fan Voltage - Siemens SINAMICS S120 Equipment Manual

Electrical installation
4.5 Connections
4.5.6

Adjusting the fan voltage

A transformer is incorporated in the Motor Module in chassis format (-T1-T10) and Basic
Line Module/Active Line Module/Smart Line Module (-T2-T10) for setting the correct
operating voltage for the 230 V fans. The locations of the transformers are indicated in the
layout diagrams supplied.
The transformer is fitted with line-side taps so that it can be fine-tuned to the line voltage.
When delivered, the taps are always set to the highest level. With a lower line voltage, the
appropriate transformer tap must be activated on the transformer. The neutral conductor is
left on terminal "0" and the phase is clamped to the existing line voltage.
Note
In the case of Smart Line Modules, Active Line Modules, and Motor Modules with "HX" and
"JX" frame sizes, two transformers are incorporated (-T10/-T11). The two line-side terminals
on each of these devices must be adjusted together.
Figure 4-11
Figure 4-12
The line-voltage assignments for making the appropriate setting on the fan transformer are
indicated in the following table.
72
Setting terminals for the fan transformers (380 to 480 V 2 AC)
Setting terminals for the fan transformers (500 to 690 V 2 AC)
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A