Forced Checking Procedure (Test Stop) - Siemens SINAMICS S120 Function Manual

Description of Safety Integrated functions
4.2 Safety Integrated Extended Functions
Overview of important parameters (see SINAMICS S120/S150 List Manual)
• p9501.26
• p9521[0...7]
• p9522[0...7]
• p9539[0...7]
• p9542
• p9543
• p9549
• r9720.0...27
4.2.17

Forced checking procedure (test stop)

Forced checking procedure (test stop) and function test
The functions and switch-off signal paths must be tested at least once within a defined
period to establish whether they are working properly in order to meet the requirements of
EN ISO 13849-1 and IEC 61508 in terms of timely error detection.
The maximum permissible interval for the forced checking procedure (test stop) for Basic
and Extended/Advanced Functions is 8760 hours; i.e. the forced checking procedure (test
stop) must be performed at least once per year.
This functionality must be implemented by initiating forced checking procedure (test stop)
cyclically either manually or as part of an automated process.
The test stop cycle is monitored. When the parameterized timer expires (also after POWER
ON / warm restart), alarm A01697: "SI Motion: Test of motion monitoring required" is
generated and a status bit is set which can be transferred to an output or to a PZD bit via
BICO. This alarm does not affect machine operation.
172
SI Motion enable safety functions (Control Unit): Enable reliable gearbox
switchover
SI Motion gearbox encoder (motor)/load denominator (Control Unit)
SI Motion gearbox encoder (motor)/load numerator (Control Unit)
SI Motion gearbox direction of rotation reversal (Control Unit)
SI Motion actual value comparison tolerance (crosswise) (Control Unit)
SI Motion gearbox switching position tolerance factor (CU)
SI Motion slip velocity tolerance (Control Unit)
CO/BO: SI Motion drive-integrated control signals
Function Manual, 12/2018, 6SL3097-5AR00-0BP1
Safety Integrated