Mitsubishi Electric Melservo MR-J3-A Instruction Manual page 150

5. PARAMETERS
(a) For motion in increments of 10 m per pulse
Machine specifications
Ballscrew lead Pb 10 [mm]
Reduction ratio: n
Servo motor resolution: Pt
CMX Pt
0
CDV S
Hence, set 65538 to CMX and 125 to CDV.
(b) Conveyor setting example
For rotation in increments of 0.01 per pulse
Machine specifications
Table : 360 /rev
Reduction ratio: n
Servo motor resolution: Pt
CMX Pt
CDV
Since CMX is not within the setting range in this status, it must be reduced to the lowest term.
When CMX has been reduced to a value within the setting range, round off the value to the nearest
unit.
CMX 102760448
703125
CDV
Hence, set 822084 to CMX and 5625 to CDV.
1/2
262144 [pulse/rev]
Pt
3
10 10
0
n Pb
625/12544
262144 [pulse/rev]
262144
0.01
625/12544 360
822083.6 822084
5625 5625
POINT
For unlimited one-way rotation, e.g. an index table, indexing positions will be
missed due to cumulative error produced by rounding off.
For example, entering a command of 36000 pulses in the above example
causes the table to rotate only:
822084
36000
5625 262144
Therefore, indexing cannot be done in the same position on the table.
n NL/NM
1/2
Servo motor
262144 [pulse/rev]
262144 524288
1/2 10 1000
Servo motor
262144 [pulse/rev]
102760448
............................................................... (5.1)
703125
1 625
360
12544
5 - 7
n
NL
Pb 10[mm]
NM
65536
125
Table
Timing belt : 625/12544
360.00018