Omron R88D-1SN ECT Series User Manual

4 - 77
4 Configuration and Wiring
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
4-4 Regenerative Energy Absorption
4
4-4-4 Connecting an External Regeneration Resistor
External Regeneration Resistance Unit
R88A-RR1K6, R88A-RR550
Normally, short-circuit B2 and B3.
When an External Regeneration Resistor is required, remove the short-circuit wire between B2 and B3,
and connect an External Regeneration Resistor between B1 and B2 as shown below.
Precautions for Correct Use
In Regeneration (4310 hex), set a value which is appropriate for the external regeneration
resistor that is connected. If you set a wrong value, the resistor may produce heat abnormally,
and fire or burning may result.
Model Resistance value
Power to be
absorbed for
120°C tempera-
ture rise
Heat radiation
specification
R88A-RR1K602R5 2.5 Ω 640 W Forced cooling by
the fan
R88A-RR1K604 4 Ω
R88A-RR1K605R4 5.4 Ω
R88A-RR1K610 10 Ω
R88A-RR1K616 16 Ω
R88A-RR1K617 17 Ω
R88A-RR1K620 20 Ω
R88A-RR1K640 40 Ω
R88A-RR1K666 66 Ω
R88A-RR55002R5 2.5 Ω 110 W Natural cooling
R88A-RR55004 4 Ω
R88A-RR55005R4 5.4 Ω
R88A-RR55010 10 Ω
R88A-RR55016 16 Ω
4-4-4 Connecting an External Regeneration Resistor
Servo Drive
B1
B2
External Regeneration
Resistor
Remove the short-circuit wire
between B2 and B3.
B3

Omron R88D-1SN ECT Series Specifications

General

Feedback	Incremental encoder, Absolute encoder
Position Control	Yes
Speed Control	Yes
Torque Control	Yes
Communication Interface	EtherCAT
Power Supply Voltage	200 to 240 VAC
Output Power	0.1 to 1.5 kW
Input Voltage Range	170 to 264 VAC
Control Method	Sine-wave PWM control
Main Circuit Power Supply	200-240 VAC
Applicable Motor Capacity	0.1 to 1.5 kW
Protection Functions	Overcurrent, Overvoltage, Undervoltage, Overheating, Encoder Error
Ambient Operating Temperature	0 to 55°C
Vibration Resistance	4.9 m/s² (10 to 55 Hz)
Shock Resistance	98 m/s2
Weight	Varies by model