Regenerative Energy Absorption By An External Regeneration Resistance Device - Omron R88M-1M Series User Manual

4 Configuration and Wiring
4-4-3 Regenerative Energy Absorption by an External Regeneration
Resistance Device
If the regenerative power exceeds the average regenerative power that the Internal Regeneration
Resistor of the Servo Drive can absorb, connect an External Regeneration Resistance Device.
Connect the External Regeneration Resistance Device between B1 and B2 terminals on the Servo
Drive.
Double-check the terminal names when you connect the resistor because the Servo Drive may be dam-
aged if the resistor is connected to the wrong terminals.
The surface of the External Regeneration Resistance Device will heat up to approximately 200°C. Do
not place it near equipment and wiring that is easily affected by heat.
External Regeneration Resistor
Refer to 3-5 Specifications of External Regeneration Resistors and External Regeneration Resistance
Units on page 3-127 for details on the specifications.
 Characteristics
External Regeneration Resistor
R88A-RR120, R88A-RR300
Model
R88A-RR12015
R88A-RR12025
R88A-RR30002R5
R88A-RR30004
R88A-RR30005R4
R88A-RR30010
R88A-RR30015
R88A-RR30016
R88A-RR30017
R88A-RR30020
R88A-RR30025
R88A-RR30033
4 - 76
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User's Manual (I586)
Power to be
absorbed for
Resistance value
120°C tempera-
ture rise
15 Ω 24 W
25 Ω
2.5 Ω 60 W
4 Ω
5.4 Ω
10 Ω
15 Ω
16 Ω
17 Ω
20 Ω
25 Ω
33 Ω
Heat radiation Heat radiation
specification condition
Natural cooling Aluminum
350 mm × 350 mm
Thickness: 3.0 mm