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Appendix 2. Selection
A2 - 13
(3) Obtaining the tolerable number of positioning times
The tolerable cycle operation frequency per minute DP is calculated respectively for the standard
built-in regenerative resistor and option regenerative resistor.
Refer to expression (2-10).
MR-RB30 (300W)
PR 300
DP
1 = 48 = 48 = 9.79 (times) Number of positioning times = 19.6 (times)
E
R 1470.6
MR-RB50 (500W)
PR 500
DP
2 = 48 = 48 = 16.3 (times) Number of positioning times = 32.6 (times)
E
R 1470.6
Because the number of times described above is the number of cycle operations for 1 vertical axis
reciprocation, the number of positioning times is 2-fold. Thus, it is apparent that the MR-RB30
(300W) option resistor is required to satisfy the specified positioning frequency of 12 times/min.
POINT
With the vertical axis, the regenerative load tends to increase compared to the
horizontal axis, so provide an allowance when making a selection.