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
•
12.3.2

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 12-5 Recommended SITOP Power
Rated output current [A]
5
10
20
40
Table 12-6 Recommendation for control supply module
Rated output current [A]
20
See catalog D21.2.
Equipment Manual Booksize Cold-Plate Power Sections
Manual, (GH4), Edition 06.2005, 6SL3097-2AJ00-0BP2
Motor cable lengths: max. 100 m
Input voltage range [V]
2AC 85-132/170 – 550
2AC 85-132/176 – 550
3AC 320 – 550
3AC 320 – 550
Input voltage range [V]
3AC 380 -10% to 3AC 480 +10%
(-15% < 1 min)
DC 300 – 800
Cabinet Design and EMC
12.3 24 V DC Supply Voltage
Short-circuit current [A]
5.5
30 for 25 ms
23
46
Short-circuit current [A]
< 24
12-9