Mitsubishi Electric MELSERVO-J5 MR-J5 Series User Manual page 362

Speed monitoring
■Speed monitoring command
During speed monitoring, this function monitors whether the absolute value of the speed command is within the SLS speed.
Upon detection that the speed command exceeds the SLS speed, the STO function is activated. However, there will be a
delay equal to the time set in [Pr. PSA15 Safety sub-function - Speed detection delay time] from when the SLS speed is
exceeded until the STO function is activated.
Servo motor speed
SLS_C (SLS_command)
ALM (malfunction)
Base circuit
(energy supply to
servo motor)
STOS (STO output)
■Speed feedback monitoring
During speed monitoring, this function monitors whether the absolute value of the speed feedback is within the SLS speed. If
the time of the speed feedback remains exceeded for the duration set in [Pr. PSA15 Safety sub-function - Speed detection
delay time], the STO function is activated.
Servo motor speed
SLS_C (SLS_command)
ALM (malfunction)
Base circuit
(energy supply to
servo motor)
STOS (STO output)
6 FUNCTIONAL SAFETY
360
6.4 Safety sub-function
Command
0 r/min
(mm/s)
ON (disabled)
OFF (enabled)
ON (disabled)
OFF (enabled)
ON
OFF
ON
OFF (shut-off)
Command
0 r/min
(mm/s)
ON (disabled)
OFF (enabled)
ON (disabled)
OFF (enabled)
ON
OFF
ON
OFF (shut-off)
SLS deceleration monitor time
Feedback
SLS speed
SLS deceleration monitor time
Feedback
SLS speed
Speed monitoring
Speed detection delay time
Speed monitoring
Speed detection delay time
STO state
STO state