Mitsubishi Electric MELSERVO-J5 MR-J5 Series User Manual page 367

The operation sequence by SDINC (SDIN command) is shown below. The function monitors the address decreasing
direction.
Stop speed
0 r/min
Servo motor speed
(mm/s)
Stop speed
ON (disabled)
SDIPC (SDIP command)
OFF (enabled)
ON (disabled)
SDIPS (SDIP output)
OFF (enabled)
ON (disabled)
SDINC (SDIN command)
OFF (enabled)
ON (disabled)
SDINS (SDIN output)
OFF (enabled)
Direction monitoring
■Speed command exceeded
During direction monitoring, the function monitors whether the speed is within the stop speed in the monitoring direction
specified by the speed command. Upon detection that the speed command exceeds the stop 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 stop speed is exceeded until the STO function is activated.
Stop speed
0 r/min
Servo motor speed
(mm/s)
Stop speed
ON (disabled)
SDIPC (SDIP command)
OFF (enabled)
ON (disabled)
SDIPS (SDIP output)
OFF (enabled)
ON
STOS (STO output)
OFF (shut-off)
SDI negative direction
monitor delay time Direction monitoring
Command
Feedback
SDI positive direction
Direction monitoring
monitor delay time
Speed detection delay time
Feedback
Command
An alarm will occur if the stop
speed in the address decreasing
direction is exceeded.
STO state
6 FUNCTIONAL SAFETY
365
6.4 Safety sub-function
6