Safety Information - Siemens SINAMICS S120 Equipment Manual

DC link components
5.1 Braking Module
Braking Module is connected to the DC link by means of the busbar sets and flexible cables,
which are supplied as standard.
The activation threshold of the Braking Module can be adjusted by means of a DIP switch.
The braking power values specified in the technical specifications apply to the upper
activation threshold.
The Braking Module has as standard, the following interfaces:
● The DC link is connected through busbars and flexible cables
● Connecting terminal for external braking resistor
● 1 digital input (inhibit Braking Module with high signal / acknowledge error with negative
● 1 digital output (Braking Module inhibited)
● 1 DIP switch for adjusting the activation threshold
Note
To install a frame size GX Braking Module in a frame size GB Basic Line Module a cable
harness set is required, which is available under order number 6SL3366-2NG00-0AA0.
5.1.2

Safety information

After disconnecting all the supply voltages, a hazardous voltage will be present in all
components for another 5 minutes. Work may not be carried out on the components until
after this time has elapsed.
Before starting work, you should also measure the voltage after the 5 minutes have
elapsed. The voltage can be measured on DC link terminals DCP and DCN.
The DC link discharge voltage hazard warning must be affixed to the modules in the local
language.
CAUTION
The connection to the braking resistors must be short-circuit/ground-fault proof.
Note
If braking resistors are used that have not been released by SIEMENS for SINAMICS, then
the braking resistors could be destroyed.
182
edge high-low)
WARNING
CAUTION
Manual, (GH3), 10/2008, 6SL3097-2AE00-0BP3
Chassis power units