Mitsubishi Electric MELSEC-Q Series User Manual page 619

(1) For "Ball screw" + "Reduction gear"
When the ball screw pitch is 10mm, the motor is the HG-KR (4194304
PLS/rev) and the reduction ratio of the reduction gear is 9/44.
M
Reduction ratio 9/44
First, find how many millimeters the load (machine) will travel (
the motor turns one revolution (AP).

AP (Number of pulses per rotation) = 4194304 [PLS]
 S
(Movement amount per rotation)
Substitute this for the above expression (1).
At this time, make calculation with the reduction ratio 9/44 remaining as a
fraction.
4194304 [PLS]
AP
=
S 10000.0 [  m]  9/44
4194304  44
=
10000.0  9
184549376
=
90000.0
23068672
=
11250.0
23068672 (AP)
=
1125.0 (AL)  10
Thus, AP, AL and AM to be set are as follows.
AP = 23068672... [Pr.2]
AL = 11250.0 ...[Pr.3]
AM = 1 ............[Pr.4]
Note): These two examples of settings are only examples. There are
settings other than these examples.
Machine
= Ball screw pitch
= 10 [mm]
= 10000.0 [
23068672 (AP)
=
11250.0 (AL)  1 (AM)
(AM)
AP = 23068672 .... [Pr.2]
or AL = 1125.0 ...... [Pr.3]
AM = 10 ............ [Pr.4]
13 - 15
Chapter 13 Control Sub Functions
Reduction ratio

9/44


m] 9/44

S ) when