Siemens SINUMERIK 840D sl Function Manual page 113

differentiation is made between the stop responses STOP A, B, C, D, E, F and the test stop.
The type of stop response that occurs in the event of a fault/error can either be pre-determined
by the system or configured by the machine manufacturer. Stops A, C, D and E can also be
externally selected as a function of an event via safety-related inputs (SGE).
Protection of persons
Protection of personnel must be given top priority when stop responses are configured. The
objective is to stop the drives in a way that best suits the situation. The time stages of the
stops must be configured with the smallest possible value corresponding to the application.
Table 7-2 Overview of the stop responses
STOP Action
A Pulses are immedi‐
ately cancelled
B Speed setpoint of 0 is
immediately entered
+ timer t starts
B
t =0 or n < n
B act shutdown
STOP A
C Speed setpoint of 0 is
immediately entered
+ timer t starts
C
t =0: SBH is activa‐
C
ted
D Brake at the acceler‐
ation limit + timer t
starts
t =0: SBH is activa‐
D
ted
E Results in stopping
and retraction + timer
t starts
E
t =0: SBH is activa‐
E
ted
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
WARNING
Effect
Drive coasts down
Drive is braked at the cur‐
rent limit/along the OFF3
ramp
: Transition to STOP A
Drive is braked at the cur‐
rent limit/along the OFF3
ramp
Drive is braked as part of a
group along the path
D
Drive is braked along the
programmed retraction and
stopping motion (ESR).
Safety functions integrated in the system/drive
Initiated in re‐ Transitioned into
sponse to
SBR/SG exceeded SH
SBH/SG exceeded SH
SG/SE exceeded SBH
SG/SE exceeded SBH
SG/SE exceeded SBH
7.3 Safe Stops A-F
Acknowledgment
POWER ON
POWER ON
RESET
RESET
RESET
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