7.7 Stop responses
7.7.1 Overview
The stop responses that can be initiated depend on the scope of the Safety Integrated
Functions used:
● Stop responses that can be initiated for faults involving Safety Integrated Basic Functions
(Page 328)
● Stop responses that can be initiated for faults involving Safety Integrated Extended
Functions (Page 330)
Stop responses and safety functions can be dependent on a priority that has been assigned:
● No overall priority is assigned to individual safety functions.
● The various stop responses each have a certain priority (Page 333).
● For stop responses and Safety Integrated Extended Functions, there are
some dependencies regarding the priority (Page 333).
The motion control in the NC is linked (Page 333) to the Safety Integrated Functions integrated
in the drive and the associated stop responses, which means that no unnecessary follow-on
responses are initiated in the NC.
7.7.2 Basic Functions
When faults associated with Safety Integrated Basic Functions occur, the following stop
responses can be initiated:
Table 7-4 Stop responses for Safety Integrated Basic Functions
Stop response Triggered ... Action Effect
STOP A cannot
be acknowl‐
edged
For all Safety faults with pulse
suppression that cannot be ac‐
knowledged.
Trigger safe pulse suppression
via the switch-off signal path for
the relevant monitoring channel.
During operation with SBC:
Apply motor holding brake.
The motor coasts to a standstill or is
braked by the holding brake.
STOP A
For all acknowledgeable Safety
faults
As a follow-up reaction of STOP
F
STOP A corresponds to Stop Category 0 in accordance with EN 60204-1.
With STOP A, the motor is switched directly to zero torque via the "Safe Torque Off (STO)" function.
A motor at standstill cannot be started again accidentally.
A moving motor coasts to standstill. This can be prevented by using external braking mechanisms, e.g.
holding or operating brake.
When STOP A is present, "Safe Torque Off" (STO) is active.
Diagnostics
7.7 Stop responses
Safety Integrated (with SINAMICS S120)
328 Commissioning Manual, 02/2020, A5E46305916B AB
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