Stop Responses; Overview; Basic Functions - Siemens SINUMERIK MC Commissioning Manual

Diagnostics

7.7 Stop responses

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:
●
(Page 328)
●
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 ...
STOP A cannot For all Safety faults with pulse
be acknowl‐ suppression that cannot be ac‐
edged knowledged.
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.
328
Stop responses that can be initiated for faults involving Safety Integrated Basic Functions
Stop responses that can be initiated for faults involving Safety Integrated Extended
Action
Trigger safe pulse suppression
via the switch-off signal path for
the relevant monitoring channel.
During operation with SBC:
Apply motor holding brake.
Commissioning Manual, 02/2020, A5E46305916B AB
Effect
The motor coasts to a standstill or is
braked by the holding brake.
Safety Integrated (with SINAMICS S120)