Mitsubishi Electric MR-J4-_GF, Instruction Manual

Page: 115 / 274

6. SERVO MOTOR DRIVING
6 - 56
(d) Automatic repeat positioning operation
By setting the auxiliary function of the point table, the sequence of operation patterns arranged on
the point table can be restarted, enabling repetitive positioning operation.
1) Absolute value command method ([Pr. PT01] = _ _ _ 0)
Setting "8" or "10" to the auxiliary function performs an automatic continuous operation or a
varying-speed operation until that point table, and after the completion of positioning, performs
the operation again from the operation pattern of the point table No. used at start-up.
Setting "9" or "11" to the auxiliary function performs an automatic continuous operation or a
varying-speed operation until that point table, and after the completion of positioning, performs
the operation again from the operation pattern of point table No. 1.
a) Automatic repeat positioning operation by absolute value command method
Example 1. Operations when "8" is set to the auxiliary function of point table No. 4
Point table
No.
Position data
[10 STM μ m]
Servo motor
speed [r/min]
Acceleration
time constant
[ms]
Deceleration
time constant
[ms]
Dwell [ms]
Auxiliary
function
1 4.00 1500.00 200 100 150 1
2 5.00 3000.00 100 150 100 1
3 5.00 2000.00 150 200 200 3
4 15.00 1000.00 300 100 150 8
Operation sequence
1) Starting with point table No. 2
2) Executing point table No. 3
3) Executing point table No. 4
4) Executing again point table No. 2 used at start-up when "8" is set to the auxiliary function of
point table No. 4
5) Repeating the above execution in the sequence of 2) to 3) to 4) to 2) to 3) to 4)
Servo motor speed
Forward rotation
0 r/min
Reverse rotation
Position address
Target point table
Controlword bit 4
(New set-point)
ON
OFF
Point actual value
(Note)
Speed
(3000.00)
Point table No. 2
Point table No. 3
Speed
(2000.00)
Speed (1000.00)
Point table No. 4
Point table No. 2
5.00
1)
2)
3)
4)
0 5.00 10.00 15.00
2
Speed
(3000.00)
Note. "Point actual value" is not outputted in an automatic continuous operation.