Mitsubishi Electric 800 Series Instruction Manual page 218

Pr.1282 Home position
Setting return method
3 Stopper type
Ignoring the home
4 position
(initial value) (Servo ON position as
the home position)
Dog type back end
5
reference
A workpiece is pressed to a mechanical stopper, and the position where it is stopped is set as
the home position.
Pressing is confirmed when the estimated speed value has fallen blow Pr.865 Low speed
detection for 0.5 s during activation of the torque limit operation. (While the stopper-type home
position is performed, Pr.1289 Home position return stopper torque is applied.) After
Pr.1290 Home position return stopper waiting time has passed after pressing is confirmed,
the home position is shifted by the home position shift amount (Pr.1285 and Pr.1286). After a
position command is created and the absolute value of the droop pulse (after electronic gear)
falls below the in-position width, the home position return is completed.
Normal
Torque limit level
(Pr.22)
Point table 1
Position command
acceleration time
speed
0
Torque limit
Point table selection
signal
Servo-ON (LX)
Start signal
The servo ON position is used as the home position.
Position command speed
0
Point table selection signal
LX
STF
RDY
Deceleration starts at the front end of the proximity dog. After the back end is passed, the
position is shifted by the post-dog travel distance and home position shift amount. The position
after the shifts is set as the home position.
Set pulses required for deceleration from the creep speed or more as the total of the post-dog
travel distance and home position shift amount.
Point table 1
acceleration time Home position
Position command
speed
0
Proximity dog
signal (X76)
Point table selection
signal
Servo-ON (LX)
Start signal (STF)
Position control under vector control
Description
Pressing confirmation level (Pr.1289)
Home position
return speed
Point table 1 acceleration time
0.5s Pr.1290
Pressing confirmed
Point table 1
deceleration time
return speed
Creep speed
Proximity dog
PARAMETERS
Normal
(Pr.22)
Home position
shift amount
Home position
Time
Creep speed
Point table 1
deceleration time
Home position
Time
Post-dog
travel distance
+
Home position
shift amount
Home
position
Time
217
5