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Mitsubishi Electric MELSERVO-J5 MR-J5 Series User Manual page 356

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■Deceleration monitoring
When [Pr. PSA02.2 Time/Deceleration monitor setting] is set to "1", speed monitoring can be performed.
After the SS2 command is turned off and the time set in [Pr. PSA26 SS1/SS2 deceleration monitor delay time] has elapsed,
speed monitoring starts. This function monitors whether the servo motor does not exceed the speed specified by [Pr. PSA24
SS1/SS2 deceleration monitor time constant] from the speed at the moment that the SS2 command is turned off.
Servo motor speed
SS2C (SS2 command)
SOS (SOS output)
When the servo motor speed is exceeded, the STO function is activated. For the threshold used for judgment, the offset can
be set in [Pr. PSA25 SS1/SS2 deceleration monitor speed offset].
Servo motor speed
SS2C (SS2 command)
SOSS (SOS output)
STOS (STO output)
6 FUNCTIONAL SAFETY
354
6.4 Safety sub-function
Deceleration monitor delay time
Deceleration monitor speed offset
Command
Stop speed
0 r/min
ON (disabled)
OFF (enabled)
ON (monitoring)
OFF
Deceleration monitor delay time
Deceleration monitor speed offset
Command
Stop speed
0 r/min
ON (disabled)
OFF (enabled)
ON (monitoring)
OFF
ON
OFF (shut-off)
Deceleration
SS1/SS2 deceleration monitor time
Deceleration monitor time constant
Speed detection delay time
Feedback
Deceleration
SS1/SS2 deceleration monitor time
Deceleration monitor
time constant
Speed detection
delay time
Feedback
Stop monitoring (SOS)
STO state
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