Safe Brake Control (Sbc) - Siemens Sinamics S110 Function Manual

Safety Integrated Functions
8.4 Basic Functions
Status for "Safe Stop 1"
The status of the "Safe Stop 1" function is displayed using the following parameters:
● r9772 CO/BO: SI status (Control Unit)
● r9773 CO/BO: SI status (Control Unit + Power Module)
● r9774 CO/BO: SI status (STO group)
● r9872 CO/BO: SI status (Power Module)
Overview of important parameters (see SINAMICS S110 List Manual)
● see "Safe Torque Off" function
● p1135[0...n] OFF3 ramp-down time
● p9652 SI Safe Stop 1 delay time (Control Unit)
● p9852 SI Safe Stop 1 delay time (Power Module)
8.4.3

Safe Brake Control (SBC)

Description
Safe brake control is used to activate holding brakes that function according to the standby
current principle (e.g. motor holding brake).
The command for releasing or applying the brake is transmitted to the Safe Brake Relay via
the Power Module. The Safe Brake Relay then carries out the action and activates the
outputs for the brake accordingly.
Brake activation via the brake connection on the Safe Brake Relay is carried out using a
safe, two-channel method.
Note
To ensure that this function can be used for Blocksize Power Modules, a Safe Brake Relay
must be used (for more information, see the Equipment Manual).
When the Power Module is configured automatically, the Safe Brake Relay is detected and
the motor holding brake type is defaulted (p1278 = 0).
"Safe Brake Control" does not detect faults in the brake itself, such as brake winding short-
circuit, worn brakes, etc.
If a cable breaks, this is only recognized by the "Safe Brake Control" function when the
status changes, i.e. when the brake is applied/released.
302
WARNING
Function Manual, 10/2008, 6SL3097-4AB10-0BP0
Drive functions