3-35
3-8-4 Processing Regenerative Energy with Multiple Axes
(Models Conforming to EC Directives)
When using multiple axes, the + terminals on the Servo Drivers can be connected to-
gether and the – terminals can be connected together to use regenerative energy as the
drive energy for the other axes, thus absorbing the energy. Servo Drivers with different
power supply voltages, however, cannot be connected. Also, regeneration absorption
capacity will not be increased when all axes simultaneously produce regenerative ener-
gy.
Wiring Method (Example for 3 Axes)
Axis 1
Axis 2
Axis 3
Note 1. Do not open or close the connections between the + or – terminals while power is being sup-
plied. The Units may be destroyed.
Note 2. Do not connect Servo Drivers that are using different power supply voltages. The Units may
be destroyed.
Regeneration absorption capacity will not be increased when all axes simultaneously produce regen-
erative energy. Take one or more of the following methods if this occurs.
•
Reduce the number of rotations being used. (Regenerative energy is directly proportional to the
square of the number of rotations.)
•
Increase the deceleration time. (This will reduce the regenerative energy per unit time.)
Operation
Chapter 3
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