Adjusting The Fan Voltage - Siemens SINAMICS S120 Manual

Electrical installation
4.6 Connections
4.6.8

Adjusting the fan voltage

A transformer is incorporated in the Motor Module in the chassis format (-T1-T10) and/or
Basic Line Module/Smart Line Module/Active Line Module (-T2-T10) for setting the correct
operating voltage for the 230 V fans. The mounting positions 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. When connected to a lower line
supply voltage, the appropriate transformer tap must be used. The neutral conductor is left
on terminal "0" and the phase is clamped to the existing line voltage.
The fans are designed for 50/60 Hz operation.
Note
Positions of the setting terminals
The position of the setting terminals for the fan transformers is provided in chapter "Cabinet
Modules in the design descriptions of the appropriate modules.
Note
Two transformers for frame sizes HX and JX
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
94
Connecting terminals for the fan transformers (2-ph. 380 to 480 V AC)
Cabinet Modules
Manual, 03/2013, A5E03263538A