Mitsumi electronic IB-1500875(ENG)-E ユーザーズマニュアル

7 - 14

For the power supply unit, calculate the spindle motor output and servo motor output each, and select the 

capacity satisfying the required rated capacity and the maximum momentary output.

The spindle rated output and spindle maximum momentary rated output are calculated.

The spindle rated output is calculated according to the following procedure.

The spindle motor rated output is calculated from the following expression.

(Note) For the spindle motor rated output, use the larger one of "continuous rated output" and 

"short-time rated output x short-time rated output coefficient 

α".

For the spindle short-time rated output coefficient 

α, use the value in the "table 1.".

(Note1)  Select the set time for the short-time rated output of your spindle motor from the list.

E.g.) When the set time for the short-time rated output is "1/12h", it means "5 minutes".

(Note2)  For the motor with coil changeover specification, select the set time for the short-time rated 

output of the high-speed coil.

0.2

0.7

0.4

0.8

0.5

0.9

0.6

1.0