Mitsubishi Electric MELSERVO-JN Series, Instruction Manual

Page: 423 / 480

13 - 72
13. POSITIONING MODE
2) Conveyor setting example
0.001 is set to be 1 μm.
Machine specifications
Table : 360 /rev
Reduction ratio : 1/n=P
1
/P
2
=625/12544
P
1
: Pulley diameter on servo motor side
P
2
: Pulley diameter on load side
Number of virtual pulses per revolution: 36000 [pulse/rev]
Number of virtual pulses per
revolution of servo motor
36000[pulse/rev]
Table
Timing belt: 625/12544
CDV
CMX
=
 
36000
=
1000 360 625/12544
36000
 
=
3125
6272
POINT
In the linear or rotary operation, setting the following values in the number of
virtual pulses per revolution (parameter No. PA05) simplifies the setting
values of the electronic gear (parameter No. PA06, PA07).
Liner operation: 100 (10000[pulse/rev])
Rotary operation: 360 (36000[pulse/rev])
(4) Selection of servo motor rotation direction
Parameter
Initial value Setting range Unit
No. Symbol Name
PA14 *POL Rotation direction selection 0 0, 1
POINT
This parameter is made valid when power is switched off, then on after
setting.
In program method, ST2 can be used only for JOG operation in the test mode.
Select the servo motor rotation direction when the forward rotation start (ST1) or reverse rotation direction
(ST2) is turned ON.
Parameter No. PA14 setting
Servo motor rotation direction
Forward rotation start (ST1) ON Reverse rotation start (ST2) ON
0
CCW rotation
(address incremented)
CW rotation
(address decremented)
1
CW rotation
(address incremented.)
CCW rotation
(address decremented)
Parameter No. PA14: 0 Parameter No. PA14: 1
CW
ST2: ON
CW
ST1: ON
ST2: ON
CCW
ST1: ON
CCW