Mitsubishi Electric MELSEC Q Series Programming Manual page 72

2 SAFETY OBSERVATION FUNCTION
(4) Timing chart
The timing chart for this function is shown below.
Safety input
signal such as
door signal etc.
SS2 command
SS2 status
SOS status
V
Motor speed
Command
speed
Standstill
speed
0
P
Motor position
0
(Note-1): The SS1/SS2 operation time, or the time until motor stop is detected
Deceleration
monitoring
(Note-1)
Feedback speed
SOS movement
amount allowance
2 - 35
Standstill
monitoring
(SOS state)
t
t