Regenerative Energy Absorption With An External Regeneration Resistor - Omron R88D-KN series User Manual

4 System Design
4-4-3 Regenerative Energy Absorption with an External Regeneration
Resistor
If the regenerative energy exceeds the regeneration 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 drive may be damaged if
connected to the wrong terminals.
The surface of the External Regeneration Resistor will heat up to approx. 200C. Do not place it near
equipment and wiring that is easily affected by heat. Attach radiator plates suitable for the heat radiation
conditions.
Resistance
Model
R88A-
RR08050S
R88A-
RR080100S
R88A-
RR22047S
R88A-
RR22047S1
R88A-
RR50020S
4-54
The amount of
Nominal regeneration
value capacity absorption for 120C
temperature rise
50 
80 W
100 
80 W
47 
220 W
47 
220 W
20 
500 W
G5 Series AC Servo Drives With Built-in EtherCAT Communications, Linear Motor Type
Heat
radiation
condition
20 W Aluminum
350  350,
Thickness:
3.0
20 W Aluminum
350  350,
Thickness:
3.0
70 W Aluminum
350  350,
Thickness:
3.0
70 W Aluminum
350  350,
Thickness:
3.0
180 W Aluminum
600  600,
Thickness:
3.0
Thermal switch
output specifications
Operating temperature: 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 temperature: 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 temperature: 170C  7C
NC contact
Rated output: 250 VAC, 3 A max.
Operating temperature: 150C  5%
NC contact
Rated output (resistive load):
250 VAC, 0.2 A max.
42 VDC, 0.2 A max.
(minimum current: 1 mA)
Operating temperature 200C  7C
NC contact
Rated output: 250 VAC, 0.2 A max.
42 VDC, 0.2 A max.
(minimum current: 1 mA)