Siemens SINUMERIK 840D sl Function Manual page 126

Safety Functions Integrated in the System/Drive
6.3 Safe Stops A–F
Stops A, C, D and E can also be externally selected as a function of an event via
safety–related inputs (SGE).
Warning
!
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 6-3 Overview of stop responses
STOP Action
A Pulses are immediately
cancelled
B 0 speed setpoint is im-
mediately entered +
timer t started
B
< n
t =0 or n
B act shutdown
STOP A
C 0 speed setpoint is im-
mediately entered +
timer t started
C
t =0: SBH is activated
C
D Motor is braked along
the acceleration + timer
t started
D
t =0: SBH is activated
D
E Results in stopping and
retraction + timer t
started
t =0: SBH is activated
E
6-126
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 05.2008 Edition
Effect
Drive coasts down
The drive brakes along
the OFF3 ramp – transi-
tion into STOP A
:
The drive is braked
along the OFF3 ramp
SBH active
Drive is braked as part
of a group along the
path
SBH active
Drive is braked along
the programmed retrac-
E
tion and stopping mo-
tion (ESR).
SBH active
Initiated in Changes
response to to
SBR/SG SH
SBH/SG SH
SG/SE SBH
SG/SE SBH
SG/SE SBH
© Siemens AG 2008 All Rights Reserved
05.08
Alarm
POWER ON
POWER ON
RESET
RESET
RESET