Mitsubishi Electric MELSERVO-JN Series Instruction Manual page 105

4. PARAMETERS
(a) For motion in increments of 10μm per pulse
Machine specifications
Ballscrew lead Pb 10 [mm]
Reduction ratio: 1/n = Z
Z : Number of gear cogs on servo motor side
1
Z : Number of gear cogs on load side
2
Command input pulses per revolution: 10000
[pulse/rev]
CMX 10000
CDV = Δ ꞏ
0
Hence, set 20 to CMX and 1 to CDV.
(b) Conveyor setting example
For rotation in increments of 0.01 per pulse
Machine specifications
Table : 360 /rev
Reduction ratio : 1/n=P
P : Pulley diameter on servo motor side
1
P : Pulley diameter on load side
2
Command input pulses per revolution: 36000
[pulse/rev]
CMX 36000
CDV = Δθ ꞏ
0
Hence, set 12544 to CMX and 625 to CDV.
/Z = 1/2
1 2
10000
= Δ ꞏ 1/n ꞏ Pb = 10 10
0
ΔS
/P =625/12544
1 2
36000
= 0.01 ꞏ 625/12544 ꞏ 360 =
Δθ
POINT
In the linear or rotary operation, setting the following values in the number of
command input pulses per revolution (parameter No. PA05) simplifies the setting
values of the electronic gear (parameter No. PA06, PA07).
Linear operation: 100 (10000[pulse/rev])
Rotary operation: 360 (36000[pulse/rev])
1/n
1/n=Z /Z =1/2
1 2
Z
2
Z
1
Number of command input pulses
per revolution of servo motor:
10000 [pulse/rev]
10000 20
-3 ꞏ 1/2 ꞏ 10 =
1
Number of command input pulses
per revolution of servo motor:
36000 [pulse/rev]
Timing belt: 625/12544
12544
625 ........................................... (4.1)
4 - 8
Pb=10[mm]
Table