Electrical Connection - Siemens SINAMICS S120 Manual

Motor Modules
6.1 Motor Modules Chassis
6.1.5

Electrical connection

Adjusting the fan voltage (-T10)
The power supply for the device fans (1 AC 230 V) in the Motor Module (-T10) is taken from
the line supply using transformers. The installation position of the transformers is indicated in
the interface descriptions.
The transformers are fitted with primary taps so that they can be fine-tuned to the line supply
voltage.
If necessary, the connection fitted in the factory, shown with a dashed line, must be
reconnected to the actual line voltage.
Note
Two transformers (T10 and -T20) are installed in Motor Modules frame size JX. The two
primary-side terminals on each of these devices must be adjusted together.
Figure 6-10
The supply voltage assignments for making the appropriate setting on the fan transformer
are indicated in the following tables (factory presetting: 480 V / 0 V or 690 V / 0 V).
Note
With the 3 AC 500 V to 690 V fan transformer, a jumper is inserted between the "600 V"
terminal and "CON" terminal. The jumper between terminal "600 V" and "CON" is for internal
use.
Fire due to overheating resulting from insufficient equipment fan voltage
If the terminals are not reconnected to the actual line voltage, overheating and human
danger due to smoke and fire may result.
This can also cause the fan fuses to blow due to overload.
• Set the terminals in accordance with the actual line voltage.
272
Setting terminals for the fan transformers (3 AC 380 ... 480 V / 3 AC 500 ... 690 V)
WARNING
Air-cooled chassis power units
Equipment Manual, 06/2020, 6SL3097-5AE00-0BP3