Mitsubishi Electric MR-D30 Instruction Manual page 106

4. SAFETY OBSERVATION FUNCTION
(3) Deceleration observation
(a) Speed observation at deceleration
When both absolute values of the speed command and the speed feedback reach the set value of
[Pr. PSA04 SS2/SOS standstill speed] or lower during deceleration, the deceleration will be
assumed as completion and the stop observation (SOS) will start. The time to start the stop
observation after the speed reaching the standstill speed will be delayed by the set time of [Pr.
PSA15 SLS/SS2/SOS speed detection delay time].
Servo motor speed
SS2C (SS2 command)
SOSS (SOS output)
(b) Delay time observation during deceleration
When the time after starting SS2/SOS function reaches the set time of [Pr. PSA03 SS1/SS2
Deceleration observation time], the deceleration will be assumed as completion and the stop
observation (SOS) will start.
Servo motor speed
SS2C (SS2 command)
SOSS (SOS output)
Command
Standstill
speed
0 r/min
ON (disabled)
OFF (enabled)
ON (observation
in progress)
OFF
Command
Standstill
speed
0 r/min
ON (disabled)
OFF (enabled)
ON (observation
in progress)
OFF
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Deceleration
SS1/SS2 monitoring
deceleration time
Speed detection
delay time
Feedback
Deceleration
SS1/SS2 monitoring
deceleration time
Speed detection
delay time
Feedback
Stop observation (SOS)
Stop observation (SOS)