Mitsubishi Electric MELSERVO-J3 Series Instruction Manual page 84

4. OPERATION AND FUNCTIONS
(2) Setting example when using the rotary encoder for the load side encoder of roll feeder
Condition
Servo motor resolution: 262144pulse/rev
Pulley diameter on the servo motor side: 30mm
Pulley diameter on the servo motor side: 20mm
Rotary encoder resolution: 5000pulse/rev
When the pulley diameters or reduction ratios differ, consider that in calculation.
For the rotary encoder, make calculation using the number of pulses multiplied by 4.
1) Parameter No.PE04 2) Parameter No.PE34
3) Parameter No.PE05 4) Parameter No.PE35
(20000 pulse/rev after multiplication by 4)
Servo motor
Pulley diameter
d1 30mm
Rotary encoder
5000pulse/rev
4 - 5
Driving part
Pulley diameter
d2 20mm
1) 1875
20000 30
3) 16384
262144 20
2) 1
4) 1