Absorbing Regenerative Energy With An External Regeneration Resistor - Omron OMNUC G Series User Manual

Absorbing Regenerative Energy with an External Regeneration
Resistor
If the regenerative energy exceeds the absorption capacity of the Servo Drive, connect an External
Regeneration Resistor.
Connect the External Regeneration Resistor between B1 and B2 terminals on the Servo Drive.
Double-check the terminal names when connecting the resistor because the Servo Drive may be
damaged by burning if connected to the wrong terminals.
The External Regeneration Resistor will heat up to approximately 120C. Do not place it near
equipment and wiring that is easily affected by heat. Attach radiator plates suitable for the heat
radiation conditions.
 External Regeneration Resistor
Performance Specifications
Model
R88A-RR08050S
R88A-RR080100S
R88A-RR22047S1
R88A-RR50020S
Nominal Regeneration ab-
Resistance
capacity sorption at 120
50 
80 W
100 
80 W
47 
220 W
20 
500 W
4-4 Regenerative Energy Absorption
Heat radiation

C condition
Aluminum,
350  350,
20 W
Thickness: 3.0
Aluminum,
350  350,
20 W
Thickness: 3.0
Aluminum,
350  350,
70 W
Thickness: 3.0
Aluminum,
600  600,
180 W
Thickness: 3.0
Thermal switch output
specifications
Operating tempera-
ture: 150C  5%
NC contact
Rated output
(resistive load):
125 VAC, 0.1 A max.
30 VDC, 0.1 A max.
(minimum current: 1 mA)
Operating tempera-
ture: 150C  5%
NC contact
Rated output
(resistive load):
125 VAC, 0.1 A max.
30 VDC, 0.1 A max.
(minimum current: 1 mA)
Operating tempera-
ture: 150C  5C
NC contact
Rated output
(resistive load):
250 VAC, 0.2 A max.
42 VDC, 0.2 A max.
(minimum current: 1 mA)
Operating tempera-
ture: 200C  7C
NC contact
Rated output
(resistive load):
250 VAC, 0.2 A max.
42 VDC, 0.2 A max.
(minimum current: 1 mA)
4-52
4