Mitsubishi Electric MELSERVO-J3 Series Instruction Manual page 633

16. INDEXER POSITIONING OPERATION
(7) Electronic gear
No. Symbol
PA06 *CMX Number of gears on machine-side
PA07 *CDV Number of gears on servo motor-side
CAUTION
Use the parameters No. PA06 and PA07 to adjust the rotation amount "m" on the servo motor shaft that is
necessary to rotate the machine side "n" times. A setting example for electronic gear is shown next.
(a) Example 1
When the number of pulley teeth on the machine-side is 50, and the number of pulley teeth on the servo
motor side is 20.
Parameter
Name
False setting will result in unexpected operation, causing injury.
POINT
This parameter is made valid when power is switched off, then on after
setting.
Set the electronic gear within the following condition range.
(1) 1/9999 CMX/CDV 9999
(2) CDV STN 32767
(3) CMX CDV 100000
When a value out of the condition range is set, the parameter error (A37)
occurs. If the setting of electronic gear ratio is small, the servo motor may not
operate with the set servo motor speed.
Setting range of the parameters No.PA06 and PA07 for the indexer
positioning operation is 1 to 16384. It is different from the setting range for the
point table positioning operation.
Number of pulley teeth on
macine side: 50
Number of pulley teeth on
servo motor side: 20
16 - 78
Initial
Unit Setting range
value
1 1 to 16384
1 1 to 16384
Parameter No.PA06: 50
Parameter No.PA07: 20