Mitsubishi Electric MELSERVO-J5 MR-J5 Series User Manual page 350

■Deceleration speed excess monitoring
This function monitors whether the servo motor does not exceed the observation speed specified by [Pr. PSA24 SS1/SS2
deceleration monitor time constant] when the motor decelerates from the speed where [Pr. PSA25 SS1/SS2 deceleration
monitor speed offset] is added to the speed at the timing the SS1 command is turned off.
If the observation speed is exceeded, the STO function is activated after the time set in [Pr. PSA15 Safety sub-function -
Speed detection delay time] has lapsed.
Servo motor speed
SS1C (SS1 command)
SS1S (SS1 output)
ALM (malfunction)
Base circuit
(energy supply to
servo motor)
STOS (STO output)
6 FUNCTIONAL SAFETY
348
6.4 Safety sub-function
Deceleration monitor delay time
Deceleration monitor speed offset
Command
Stop speed
0 r/min
(mm/s)
ON (disabled)
OFF (enabled)
ON (monitoring)
OFF
ON (disabled)
OFF (enabled)
ON
OFF
ON
OFF (shut-off)
Deceleration
SS1/SS2 deceleration monitor time
Speed detection
delay time
Deceleration monitor
time constant
STO state
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