Technical data

Safety Integrated Functions
8.2 General information about SINAMICS Safety Integrated
Function Manual
Function Manual, 06/2012, 6SL3097-4AB10-0BP4
337
8.2.3 Drive monitoring with or without encoder
If motors without a (safety-capable) encoder are being used, not all Safety Integrated
functions can be used.
Note
When "without encoder" is used in this manual, then this always means that either no
encoder or no safety-capable encoder is being used.
In operation without encoder the speed actual values are calculated from the measured
electrical actual values. As a consequence, speed monitoring down to a speed of 0 rpm is
also possible for operation without an encoder.
Table 8- 2 Overview of Safety Integrated functions
Functions Abbreviation With
encoder
Without
encode
r
Brief description
Safe Torque Off STO Yes Yes Safe torque off
Safe Stop 1 SS1 Yes Yes Safe stopping process in
accordance with stop
category 1
Basic
Functions
Safe Brake
Control
SBC Yes Yes Safe brake control
Safe Torque Off STO Yes Yes Safe torque off
Safe Stop 1 SS1 Yes Yes Safe stop in accordance with
stop category 1
Safe Brake
Control
SBC Yes Yes Safe brake control
Safe Stop 2 SS2 Yes No Safe stop in accordance with
stop category 2
Safe Operating
Stop
SOS Yes No Safe monitoring of the
standstill position
Safely Limited
Speed
SLS Yes Yes Safe monitoring of the
maximum speed
Safe Speed
Monitor
SSM Yes Yes Safe monitoring of the
minimum speed
Safe Acceleration
Monitor
SAM Yes Yes Safe monitoring of drive
acceleration
Safe Brake Ramp SBR No Yes Safe brake ramp
Extended
Functions
Safe Direction SDI Yes Yes Safe monitoring of the
direction of motion
The configuration of the Safety Integrated functions and the selection of monitoring with or
without encoder takes place in the Safety screens of the STARTER or SCOUT tools.