Technical data

Safety Integrated Functions
8.4 Safety Integrated Basic Functions
Function Manual
Function Manual, 06/2012, 6SL3097-4AB10-0BP4
359
Prerequisite
STO via terminals (p9601.0 = p9801.0 =1) or Basic Functions via PROFIsafe (p9601.2 =
p9801.2 = 0 and p9601.3 = p9801.3 = 1) must be configured.
In order that the drive can brake down to a standstill even when selected through one
channel, the time in p9652/p9852 must be shorter than the sum of the parameters for the
data cross-check (p9650/p9850 and p9658/p9858). Otherwise the drive will coast down after
the time p9650 + p9658 has elapsed.
Status for "Safe Stop 1"
The status of the "Safe Stop 1" function is displayed via parameters r9772, r9773, r9774,
and r9872.
Alternatively, the status of the functions can be displayed using the configurable messages
N01621 and N30621 (configured using p2118 and p2119).
Overview of important parameters (see SINAMICS S110 List Manual)
● p1135[0...n] OFF3 ramp-down time
● p9650 SI F-DI changeover tolerance time (processor 1)
● p9651 SI STO/SBC/SS1 debounce time (processor 1)
● p9652 SI Safe Stop 1 delay time (CPU 1)
● r9772 CO/BO: SI status (CPU 1)
● r9773 CO/BO: SI status (CPU 1 + CPU 2)
● r9872 CO/BO: SI status (CPU 2)
● p9850 SI F-DI changeover tolerance time (processor 2)
● p9851 SI STO/SBC/SS1 debounce time (processor 2)
● p9852 SI Safe Stop 1 delay time (CPU 2)
8.4.3 Safe Brake Control (SBC)
Description
The "Safe Brake Control" function (SBC) is used to control holding brakes that function
according to the quiescent current principle (e.g. motor holding brakes).
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.