Effects When The Limit Is Exceeded For Sbh - Siemens SINUMERIK 840D Description Of Functions

3 Safety-Related Functions
3.4 Safe operating stop (SBH)
3.4.2

Effects when the limit is exceeded for SBH

If the axis/spindle is being monitored (SGA "SBH active" = 1) and leaves, for
example, the standstill tolerance window as the result of an external influence
or an undefined setpoint input, the effects are as follows:
Effects •
•
Time response when a The time response of the system is as follows if the limit value is violated when
limit value is violated the safe operating stop function is active:
Fig. 3-14
3-90
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
The axis switches to STOP A/B configured using the following MDs:
For 840D 36956: $MA_SAFE_PULSE_DISABLE_DELAY
for 611 digital 1356:
and
for 840D 36960: $MA_SAFE_STANDSTILL_VELO_TOL
for 611 digital 1360:
An alarm is generated (for 840D: 27010, for 611 digital: 300907)
d) Transition from STOP B
n
to STOP A (pulse disabling)
Tolerance
exceeded b)
Creep
speed
Error a)
Standstill
= =
tolerance
t
3
t
4
STILL_02.DS4
Timing when the limit value is exceeded with active SBH
$MD_SAFE_PULSE_DISABLE_DELAY
$MD_SAFE_STANDSTILL_VELO_TOL
c) Start of stop reaction sequence
STOP B
not to scale
t
1
t
2
t
6
t
5
t
7
t
8
t
9
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11.03
STOP A
d)
s
t