24 V Connection; Description - Siemens SINAMICS S120 Manual

NOTICE
Material damage due to loose power connections
Insufficient tightening torques or vibration can result in faulty electrical connections. This
can cause fire damage or malfunctions.
• Tighten all power connections with the specified tightening torques, e.g. line supply
• Check the tightening torques of all power connections at regular intervals and tighten
6.6.3

24 V connection

6.6.3.1

Description

The electronic circuitry of the components is supplied with 24 V via the 24 V busbar system.
The 24 V connections between modules are established using jumper plugs from the
terminal kit.
The 24 V jumper plugs must be inserted before the drive line-up is commissioned.
Electric shock when inserting and removing 24 V jumper plugs in operation
If you attempt to connect or disconnect the 24 V jumper plugs when the system is in
operation, you might touch the DC link busbars. Contact with these busbars when they are
live can lead to death or serious injury.
• Only connect or disconnect the 24 V jumper plugs when the system is deenergized.
Fire caused by 24 V jumper plugs when DC link busbars are not connected
The 24 V jumper plugs may only be used when the DC link busbars of the components are
also connected. The 24 V jumper plugs can otherwise burn and cause severe injury or
death as result of fire or smoke.
• If the DC link busbars of the components are not connected, each component must be
Power Units in Booksize C/D-Type Format
Manual, 12/2018, 6SL3097-5AC20-0BP0
connection, motor connection, DC link connections.
them when required. This applies in particular after transport.
WARNING
WARNING
supplied with 24 V separately via a 24 V terminal adapter.
Cabinet design
6.6 Electrical connection
111