Electrical Connection; Connecting The Dc-Link Busbars And 24 V Busbars; Connecting The Busbars - Siemens SINAMICS S120 System Manual

5.6

Electrical connection

5.6.1

Connecting the DC-link busbars and 24 V busbars

1. Connect the DC link busbars of the HF modules the same as for standard booksize
components.
2. Connect the 24 V busbars using the 24 V connectors provided in the accessories pack.
3. Mount the side cover for the DC link at the first and last component of the drive line-up.
• The tightening torque for DC link busbar screws is 1.8 Nm (tolerance: +30 %).
Electric shock when connecting hazardous voltages to the 24 V busbars
When a hazardous voltage is connected to the 24 V busbars, you can suffer death or severe
injury when coming into contact with the busbars.
• Only connect safety extra low voltages (PELV or SELV) to 24 V busbars.
Additional information and diagrams can be found in the SINAMICS S120 Manual for "Booksize
Power Units" (Chapter: Electrical connection for Line Modules and Motor Modules).
5.6.2

Connecting the busbars

Before commissioning the drive line-up, connect the busbars between:
• HF Motor Module and HF Choke Module
• HF Choke Module and HF Damping Module
Mounting steps
1. Remove the busbar connections from the accessories pack.
2. Insert the connectors on the busbars and hold them in place.
3. Tighten the screws with a Torx screwdriver by hand and, in a second step, with the tightening
torque of 3 Nm (26.6 lbf in).
High Frequency Drive
System Manual, 10/2020, 6SL3097-5AH10-0BP0
WARNING
High Frequency Modules
5.6 Electrical connection
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