Op Search Limit Function; Control Details - Mitsubishi Electric MELSEC Q Series User Manual

7 OPR CONTROL

7.9 OP Search Limit Function

7.9.1 Control details

This function is that through movement operation in the opposite direction of OPR
(movement operation in the direction of OPR foe the limit switch combined type), if the
movement exceeds the parameter set in "
1098" will occur and the OPR is terminated. (It stops by setting of sudden stop time.)
This function is used to prevent over run in case the proximity dog signal and limit
switch cannot detect correctly due to a failure.
The OPR methods corresponding to the OP search limit function are shown below.
Method
Proximity dog type
Data set type
Stopper type
Dog cradle type
Limit switch combined type
Scale origin signal detection type
Operation for the OP search limit function is shown below.
(1) OPR for dog cradle type (ex. The proximity dog OFF cannot be
detected.)
OPR direction
Pr.51
V
OPR start
Alarm stop due to "
Pr.62
search limit" being exceeded
Zero point
Pr.62
OP search limit function
: Possible
OP
7 - 16
MELSEC-Q
OP search limit", an "error code
: Not possible
OPR speed
Pr.54
The proximity dog OFF cannot
be detected for some reason.
Proximity dog