Activating "Sbc" Via The Safe Brake Adapter; Activating "Sbc" Via The Safe Brake Adapter For Option K88 (230 V Ac) - Siemens SINAMICS Series Function Manual

Controlling the safety functions

5.4 Activating "SBC" via the Safe Brake Adapter

5.4 Activating "SBC" via the Safe Brake Adapter
5.4.1

Activating "SBC" via the Safe Brake Adapter for option K88 (230 V AC)

Description
The Safe Brake Control (SBC) is a safety function which is used in safety-related
applications, e.g. in presses or in rolling mills. In the no-current state, the brake acts on the
motor of the drive using spring force. The brake is released when current flows (=low active).
The Safe Brake Adapter 230 VAC is installed in the factory in the cabinet unit. Power is
connected to terminal -X12 on the Safe Brake Adapter. A connection between the Safe
Brake Adapter and the Control Interface Module is established in the factory so that the Safe
Brake Adapter can be controlled.
For controlling the brake, a connection must be established on site between terminal -X14 on
the Safe Brake Adapter and the rectifier of the brake. Direct connection of AC brakes is not
permissible.
Fast de-energization
Some brake rectifier types feature two additional connections for switching the brake load on
the DC side. This allows the brake coil to be quickly de-energized, i.e. the braking effect
starts earlier.
The Safe Brake Adapter supports such a fast de-energization using the two additional
connections -X15:1 and -X15:2. This function is not part of the safe brake control.
Note
Determination of the time until the brake engages without fast de-energization
As the fast de-energization is not part of the safety function, this functionality is not
monitored. The fast de-energization can therefore fail during operation without being noticed.
Therefore, to determine the time until the brake engages for a machine acceptance, the fast
de-energization must be bypassed by short-circuiting the terminals at X15:1, 2.
86
Safety Integrated
Function Manual, 07/2016, A5E03264275A