Technical data

Safety Integrated Functions
8.4 Safety Integrated Basic Functions
Function Manual
362 Function Manual, 06/2012, 6SL3097-4AB10-0BP4
Table 8- 9 Stop responses to Safety Integrated Basic Functions
Stop response Triggered ... Action Effect
STOP A cannot be
acknowledged
For all non-
acknowledgeable
safety faults with
pulse suppression.
STOP A For all
acknowledgeable
safety faults with
pulse suppression.
As a follow-up
reaction of STOP F.
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 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. armature short-circuiting, holding or operational
brake).
When STOP A is active, "Safe Torque Off" (STO) is effective.
STOP F If an error occurs in the
data cross-check.
Transition to STOP A. Follow-up reaction STOP A
with adjustable
delay (default setting without
delay) if one of the safety
functions is selected
STOP F is permanently assigned to the data cross-check (DCC). In this way,
errors are detected in the monitoring channels.
After STOP F, STOP A is triggered.
When STOP A is active, "Safe Torque Off" (STO) is effective.
WARNING
With a vertical axis or pulling load, there is a risk of uncontrolled axis movements when
STOP A/F is triggered. This can be prevented by using "Safe Brake Control (SBC)" and a
holding brake (not a safety brake!) with sufficient holding force.