Siemens SINAMICS S120 Equipment Manual page 108

Line Modules
3.3 Smart Line Modules
Adjusting the fan voltage (-T10)
The power supply for the device fans (1-ph. 230 V AC) in the Smart Line Module (-T10) is
taken from the line supply using transformers. The locations of the transformers are
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 Smart Line Modules, frame size JX.
The two primary-side terminals on each of these devices must be adjusted together.
Figure 3-18
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 500 V – 690 V 3 AC fan transformer, a jumper is inserted between the "600 V"
terminal and the "CON" terminal. The "600 V" and "CON" terminals are for internal use.
CAUTION
If the terminals are not reconnected to the actual line voltage:
• The required cooling level will not be provided (risk of overheating).
• The fan fuses may blow (overload).
108
Setting terminals for the fan transformers
(380 V – 480 V 3 AC / 500 V – 690 V 3 AC)
Manual, (GH3), 10/2008, 6SL3097-2AE00-0BP3
Chassis power units