OE Max Controls CSDP Plus, User Manual

Page: 107 / 254

109
This picture shows the case where a motor repeats acceleration and
deceleration on the horizontal basis with a fixed cycle.
If the number of the motor’s actual repetition is more than the allowed
number of repetitions, please follow the command below.
• Lower the preset speed as much as possible.
• Set the deceleration time as long as possible.
• Limit the torque as much as possible.
• Make the inertia of the load system smaller.
The regenerative resistor should be selected among those that meet
the specifications of the user’s load system. As another way to select
the regenerative resistor, calculating the rated power of the necessary
regenerative resistor can help the user choose the optimum
regenerative resistor for the load system.
The formula to get the rated power W
K
of the regenerative resistor is
as follows.
T stands for the operation cycle and 2means the 20% of
the rated power.
The energy consumed by the regenerative resistor E
K
can be
calculated by the following formula.
E
M
= Revolving energy of the servo motor
E
L
= Energy consumed by the load in the
deceleration section
E
R
= Heat loss energy consumed by the coil
resistance of the motor
E
C
= Energy that can be absorbed by the servo
drive
Deceleration
Section
T
E
W
K
K ×
=
2 . 0
( )
C R L M K
E E E E E
+ + − =