Mitsubishi Electric RD77MS2 - Page 229

8 CONTROL SUB FUNCTIONS
8.3 Functions for Compensating the Control
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8
■When "degree" is set as the control unit for a rotary axis
When the rotary axis is used, the motor is HG-KR (4194304 pulses/rev) and the reduction ratio of the reduction gear is 3/11.
First, find how many degrees the load (machine) will travel (S) when the motor turns one revolution (AP).
AP (Number of pulses per rotation) = 4194304 [pulse]
S (Movement amount per rotation)
= 360.00000 [degree]  Reduction ratio
= 360.00000  3/11
Substitute this for the above expression (1).
At this time, make calculation with the reduction ratio 3/11 remaining as a fraction.
Thus, AP, AL and AM to be set are as follows.
or
*1 These two examples of settings are only examples. There are settings other than these examples.
Setting value Setting item
AP = 2883584 [Pr.2]
AL = 67.50000 [Pr.3]
AM = 1 [Pr.4]
Setting value Setting item
AP = 2883584 [Pr.2]
AL = 0.06750 [Pr.3]
AM = 1000 [Pr.4]
Reduction ratio 3/11
M
AP
ΔS
=
4194304 [pulse]
360.00000 [degree] × 3/11
=
4194304 [pulse] × 11
360.00000 [degree] × 3
=
46137344
1080.00000
=
2883584
67.50000
=
2883584(AP)
67.50000(AL) × 1(AM)
=
2883584(AP)
0.06750(AL) × 1000(AM)