Activating "Sbc" Via The Safe Brake Adapter; Activating "Sbc" Via The Safe Brake Adapter For Option K88 (230 V Ac) - Siemens SINAMICS G130 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 the plant side 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 fast de-energizing using the two additional
connections -X15:1 and -X15:2. This function does not belong to 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 closes for a machine acceptance, the fast de-
energization must be bypassed by short-circuiting the terminals at -X15:1, 2.
88
Safety Integrated
Function Manual, 08/2023, A5E03264275A