Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 298

Pr.1282 Home position return
setting method
Stopper type
3
Vector Vector Vector
PM PM PM
Ignoring the home
position
4
(Servo ON position as
(initial
the home position)
value)
Vector Vector Vector
PM PM PM
Dog type back end
reference
5
Vector Vector Vector
PM PM PM
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 distance (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
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)
5.5 Position control under vector control and PM sensorless vector control
Description
Pressing confirmation level (Pr.1289)
Home position
return speed
Point table 1 acceleration time
0.5s Pr.1290
Pressing confirmed
0
Point table 1
deceleration time
return speed
Proximity dog
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
Creep speed
Home
position
Time
5. PARAMETERS
1
2
3
4
5
6
7
8
9
10
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