Omron OMNUC G Series User Manual

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4-4 Regenerative Energy Absorption
System Design
4
Servo Drive Regenerative Energy Absorption Capacity
 Amount of Internal Regeneration Absorption in Servo Drives
The OMNUC G-Series Servo Drives absorb regenerative energy internally with built-in capacitors.
If the regenerative energy is too large to be processed internally, an overvoltage error occurs and
operation cannot continue.
The following table shows the regenerative energy (and amount of regeneration) that each Servo
Drive can absorb. If these values are exceeded, take the following measures.
 Connect an External Regeneration Resistor (to improve the regeneration processing capacity).
 Reduce the operating rotation speed. (The amount of regeneration is proportional to the square of
the rotation speed.)
 Extend the deceleration time (to decrease the regenerative energy produced per time unit).
 Extend the operation cycle, i.e., the cycle time (to decrease the average regeneration power).
Note These are the values at 100 VAC for 100-VAC models, and at 200 VAC for 200-VAC models.
Servo Drive model
Regenerative
energy (J) that can
be absorbed by
internal capacitor
Internal regeneration resistance
Minimum value
of regeneration
resistance
()
Average amount of
regeneration that can
be absorbed (W)
Resistance
()
R88D-GNA5L-ML2 12 --- --- 18
R88D-GN01L-ML2 12 --- --- 18
R88D-GN02L-ML2 18 --- --- 18
R88D-GN04L-ML2 27 12 50 13
R88D-GN01H-ML2 16 --- --- 35
R88D-GN02H-ML2 16 --- --- 35
R88D-GN04H-ML2 25 --- --- 35
R88D-GN08H-ML2 43 12 100 27
R88D-GN10H-ML2 70 20 30 27
R88D-GN15H-ML2 70 20 30 18
R88D-GN20H-ML2 70 40 15 11
R88D-GN30H-ML2 70 40 15 11
R88D-GN50H-ML2 105 80107
R88D-GN75H-ML2 250 --- --- 4

Omron OMNUC G Series Specifications

General

Brand	Omron
Model	OMNUC G Series
Category	Servo Drives
Language	English