Omron R88D-1SN ECT Series User Manual

4 Configuration and Wiring
4 - 76
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
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.
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
4-4-3 Regenerative Energy Absorption by an External Regeneration
Resistance Device
External Regeneration Resistor
Model Resistance value
Power to be
absorbed for
120°C tempera-
ture rise
Heat radiation
specification
Heat radiation
condition
R88A-RR12015 15 Ω 24 W Natural cooling Aluminum
350 mm × 350 mm
Thickness: 3.0 mm
R88A-RR12025 25 Ω
R88A-RR30002R5 2.5 Ω 60 W
R88A-RR30004 4 Ω
R88A-RR30005R4 5.4 Ω
R88A-RR30010 10 Ω
R88A-RR30015 15 Ω
R88A-RR30016 16 Ω
R88A-RR30017 17 Ω
R88A-RR30020 20 Ω
R88A-RR30025 25 Ω
R88A-RR30033 33 Ω

Omron R88D-1SN ECT Series Specifications

General

Brand	Omron
Model	R88D-1SN ECT Series
Category	Controller
Language	English