Selecting Power Supply Units - Siemens SINAMICS S120 Equipment Manual

Note
A regulated DC power supply is required to operate motors with a built-in holding brake. The
voltage is supplied via the internal 24 V busbars. The voltage tolerances of the motor holding
brakes and the voltage drops of the connection cables must be taken into account.
The DC power supply should be set to 26 V. The CSM supplies 26 V. This ensures that the
supply voltage for the brake remains within the permissible range when the following
conditions are fulfilled:
• Using Siemens three-phase motors
• Using Siemens MOTION-CONNECT power cables
• Motor cable lengths: max. 100 m
14.3.2

Selecting Power Supply Units

You are advised to use the devices in the following table. These devices meet the
requirements of EN 60204-1.
Table 14-5 Recommended SITOP Power
Rated output current [A]
5
10
20
40
Table 14-6 Recommendation for control supply module
Rated output current [A]
20
See catalog D21.1.
Booksize cold-plate power units
Manual, (GH4), 03.2007, 6SL3097-2AJ00-0BP4
Input voltage range [V]
2-ph. 85-132/170 – 550 AC
2-ph. 85-132/176 – 550 AC
320 – 550 V 3 AC
320 – 550 V 3 AC
Input voltage range [V]
3-ph. 380 V AC -10% (-15% < 1 min) to 3-ph. 480 V
AC +10%
DC 300 – 800
Cabinet Design and EMC
14.3 24 V DC Supply Voltage
Short-circuit current [A]
5,5
30 for 25 ms
23
46
Short-circuit current [A]
< 24
311