Omron SMARTSTEP A Series User Manual page 180

System Design and Installation
Note External Regeneration Resistors cannot be connected to 30- to 200-W Servo Drivers.
Servo Driver
R7D-APA3L
R7D-APA5L
R7D-AP01L
R7D-AP02L
R7D-AP04L
R7D-APA3H
R7D-APA5H
R7D-AP01H
R7D-AP02H
R7D-AP04H
R7D-AP08H
Note These are the values at 100 V AC for 100-V AC models, and at 200 V AC for 200-V AC models.
3-3-3 Regenerative Energy Absorption by External
Regeneration Resistance
For 400- to 750-W Servo Drivers, if the regenerative energy exceeds the absorption
capacity of the Servo Driver by itself, then external regeneration resistance can be
connected.
A Resistor or Unit can be used alone or in combination with other Resistors/Units to
provide the required regeneration processing capacity.
!Caution Connect the External Regeneration Resistor or External Regeneration Resistance
Unit between the Servo Driver's B1 and B2 terminals. Check the terminal names
carefully when connecting to the terminals. If the Resistor or Unit is connected to
the wrong terminals it will damage the Servomotor.
Note 1. The External Regeneration Resistor can reach a temperature of approximately 120 ° C, so
install it at a distance from heat-sensitive devices and wiring. In addition, a radiation shield
must be installed according to the radiation conditions.
Note 2. For external dimensions, refer to 2-9 External Regeneration Resistor Specifications.
3-40
Regenerative energy (J)
that can be absorbed by
internal capacitor (See
note 1.)
57.1
57.1
57.1
57.1
57.1
18.5
18.5
37.1
37.1
37.1
–
Internal regeneration resistance
Average amount of
regeneration that can
be absorbed (W)
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–
–
–
–
–
–
–
–
–
12
Chapter 3
Resistance ( Ω )
–
–
–
–
–
–
–
–
–
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