
B–65192EN/02
4. AC LINE FILTER AND SEPARATE
REGENERATIVE DISCHARGE UNIT
23
(ii) Vertical operation
Amount of regenerative discharge (power [W] ) with a duty cycle D
(%) in the rapid–traverse descending direction
SI system of units
(4). . . . . . . . . . . . . . . . . . . . . . .
Q + 1.047 10
*1
Th Vm
D
100
[W]
where
Th: Torque (N · m) needed for the motor to change the operation from
rapid traverse descending to ascending
Vm:Motor speed (min
–1
) for rapid traverse
D: Duty cycle (%) during rapid–traverse descending
CAUTION
D is 50% at most. It is usually below 50%.
CGS system of units
(5). . . . . . . . . . . . . . . . . . . . . . .
Q + 1.026 10
*2
Th Vm
D
100
[W]
where
Th: Torque (kg ⋅ cm) needed for the motor to change the operation
from rapid traverse descending to ascending
Vm:Motor speed (rpm) for rapid traverse
D: Duty cycle (%) during rapid–traverse descending
CAUTION
D is 50% at most. It is usually below 50%.