Mitsubishi Electric MELSERVO-J5 MR-J5 Series User Manual page 358

■Position feedback monitoring at stop
During stop monitoring, this function monitors whether the absolute value of the amount of position feedback change from
when stop monitoring (SOS) starts is within the value set in [Pr. PSA05 SOS permissible travel distance]. If the travel distance
remains deviated for the duration set in [Pr. PSA17 Safety sub-function - Position detection delay time], the STO function is
activated.
Feedback pulse
SS2C (SS2 command)
ALM (malfunction)
Base circuit
(energy supply to
servo motor)
STOS (STO output)
SOSS (SOS output)
6 FUNCTIONAL SAFETY
356
6.4 Safety sub-function
0 pulse
ON (disabled)
OFF (enabled)
ON (disabled)
OFF (enabled)
ON
OFF
ON
OFF (shut-off)
ON (monitoring)
OFF
Deceleration Stop monitoring (SOS)
Command
Feedback
Position detection delay time
SOS permissible travel distance
STO state