4-60
4-4 Regenerative Energy Absorption
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
4
System Design
Combining External Regeneration Resistors
*1. Select a combination that has an absorption capacity greater than the average regeneration power
(Pr).
*2. Do not use a combination with resistance values lower than the allowable minimum regeneration
resistance of each drive. For information on the allowable minimum regeneration resistance, refer to
Servo Drive Regeneration Absorption Capacity (P.4-56).
Surface temperatures on regeneration resistance can reach 200°C.
Do not place objects that tend to catch fire nearby. To prevent people from touching them, install
a cover that enables heat dissipation.
Regeneration
absorption capacity
*
1
20 W 40 W 70 W 140 W
Model
R88A-RR08050S
R88A-RR080100S
R88A-RR08050S
R88A-RR080100S
R88A-RR22047S1 R88A-RR22047S1
Resistance value
*
2
50 Ω/100 Ω 25 Ω/50 Ω 47 Ω 94 Ω
Connection
method
Regeneration
absorption capacity
*
1
140 W 280 W 560 W
Model R88A-RR22047S1 R88A-RR22047S1 R88A-RR22047S1
Resistance value
*
2
23.5 Ω 47 Ω 23.5 Ω
Connection
method
Regeneration
absorption capacity
*
1
180 W 360 W 1440 W
Model R88A-RR50020S R88A-RR50020S R88A-RR50020S
Resistance value
*
2
20 Ω 10 Ω 10 Ω
Connection
method
R
R
R
R
R
R
R
R
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