Two independent switch-off signal paths are available. All switch-off signal paths are low active.
This ensures that the system is always switched to a safe status if a component fails or in the
event of cable breakage.
When the "Safe Torque Off" function is selected, the following apply:
● The motor cannot be started accidentally.
● The pulse disable safely disconnects the torque-generating motor power supply.
● The Motor Module and the motor are not electrically isolated.
● If the first switch-off signal path fails the circuit-breaker opens and disconnects drive and
motor from the supply system.
Note
The function is drive-independent. A higher-level controller is not required.
The safety function fulfills the requirements of Safety Integrity Level (SIL) 2 to IEC 61508,
Part 1-4, Category 3 acc. to EN ISO 13849-1, as well as those of the Performance Level (PL)
d according to EN ISO 13849-1. "Safe Torque Off" corresponds to stop Category 1 according
to EN 60204-1. This certification serves as the guidelines for integration of option K80 "Safe
Torque OFF". This certification can only be used if all the specified boundary conditions have
been satisfied in accordance with requirements. In addition to this, we recommend that
acceptance testing of the implemented overall function is performed by an authorized
inspectorate.
3.6.11.1
Safety information regarding the "Safe Torque Off / safe standstill" function
Safety instructions
WARNING
Unexpected start up of the drive following deactivation of the "Safe Torque Off / Safe
Standstill" function
If the "Safe Torque Off / Safe Standstill" function is deactivated then the drive can start up
unexpectedly.
Death, serious injury, or material damage can result.
● Ensure that the "Safe Torque Off / Safe Standstill" function is clearly deactivated.
● Remove the "Safe Torque Off" mushroom pushbutton and press the "Safe Torque Off"
button to make clear that the "Safe Torque Off / Safe Standstill" function is deactivated.
Description
3.6 Description of options
SINAMICS SM150 6SL3845-7NN46-7AA0
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Operating Instructions 04/2017
Summary of Contents for SINAMICS SM150
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Page 14: ...Table of contents SINAMICS SM150 6SL3845 7NN46 7AA0 14 Operating Instructions 04 2017 ...
Page 122: ...Start up SINAMICS SM150 6SL3845 7NN46 7AA0 122 Operating Instructions 04 2017 ...
Page 190: ...Maintenance 9 7 Repairs SINAMICS SM150 6SL3845 7NN46 7AA0 190 Operating Instructions 04 2017 ...
Page 192: ...Spare parts SINAMICS SM150 6SL3845 7NN46 7AA0 192 Operating Instructions 04 2017 ...
Page 196: ...Service Support SINAMICS SM150 6SL3845 7NN46 7AA0 196 Operating Instructions 04 2017 ...
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