SIEMENS
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Siemens D 21.4 · 2017
Safety Integrated
Safety Integrated for SINAMICS S120 built-in units
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Overview
Safe Brake Control
The Safe Brake Control is integrated in power units in booksize
format.
For the Safe Brake Control (SBC) function, a Safe Brake Relay is
required for power units in blocksize format, and a Safe Brake
Adapter for power units in chassis format.
The Safe Brake Relay/Safe Brake Adapter and the brake control
that is integrated in the booksize/chassis format allows safe
control of electro-mechanical motor brakes.
The Safe Brake Relay controls a 24 V DC brake; the Safe Brake
Adapter controls a 230 V AC brake. When the STO function is
active, the Safe Brake Relay/Safe Brake Adapter safely closes
the connected brake. The SBC function monitors the control of
the brake, however, not its mechanical functioning.
The inverter controls the connected brake using the motor
holding brake function.
External surge suppressors are not required. The cable har-
nesses for connection to the Power Module are supplied as stan-
dard with the Safe Brake Relay. A connecting cable is required
to connect the Safe Brake Adapter.
With the Safe Brake Relay/Safe Brake Adapter functions, the
brake is controlled in accordance with IEC 61508 SIL 2 and
EN ISO 13849-1 PL d and Category 3.
Safe Brake Relay
Safe Brake Adapter
© Siemens AG 2017