Forced Checking Procedure Of The External Stops - Siemens SINUMERIK 840D sl Function Manual

t3:
500 ms after t2, braking starts along the parameterized ramp
t4:
STOP B is initiated 2.5 s after t2. The axis is already stationary at this time, which means that
the pulses can be immediately cancelled.
Example 3 for STOP F with interruption by STOP D
A retraction axis is shown in the following diagram. As a result of the high velocity of the
retraction motion, the SG monitoring for this axis initiates a STOP D. After the transition time
from STOP F to STOP B expires, this braking ramp has still not been completed, so that now
the axis continues to brake with the STOP B response (n
Figure 7-9
The following actions take place at the following instants in time:
t1:
STOP F occurs, ESR starts
t2:
the set SG limit is exceeded, STOP D is initiated
t3:
after t1 + $MA_SAFE_STOP_SWITCH_TIME_F, STOP B is initiated, and the axis starts to
brake at the current limit / OFF3 ramp
t4:
STOP A is initiated after the axis comes to a standstill
7.3.9

Forced checking procedure of the external STOPs

The following applies for the test stop of external STOPs:
All stop SGEs that are used are switched one after the other in each channel and the positive
response evaluated using the associated SGA "STOP x is active".
Note
Only the enabled and activated external standstill functions have to be tested.
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Speed characteristic for retraction with SG violation
Safety functions integrated in the system/drive
=0 or OFF3).
set
7.3 Safe Stops A-F
131