Regenerative Energy Absorption With An External Regeneration Resistor - Omron G5 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 temperature of the External Regeneration Resistor will rise 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 Resistors
Characteristics
Resistance
Model
R88A-
RR08050S
R88A-
RR080100S
R88A-
RR22047S
R88A-
RR22047S1
R88A-
RR50020S
4 - 42
The amount of
Nominal regeneration
value capacity absorption for 120
temperature rise
50 Ω
80 W
100 Ω
80 W
47 Ω
220 W
47 Ω
220 W
20 Ω
500 W
OMNUC G5-series (Pulse-train Input Type) AC Servomotors and Servo Drives User's Manual
Heat radiation
condition
20 W Aluminum
350 x 350,
Thickness: 3.0
20 W Aluminum
350 x 350,
Thickness: 3.0
70 W Aluminum
350 x 350,
Thickness: 3.0
70 W Aluminum
350 x 350,
Thickness: 3.0
180 W Aluminum
600 x 600,
Thickness: 3.0
Thermal switch output
specifications
Operating temperature:
150 ± 5°C
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 ± 5°C
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 ± 7°C
NC contact
Rated output (resistive load):
250 VAC, 3 A max.
Operating temperature:
150 ± 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 temperature:
200 ± 7°C
NC contact
Rated output (resistive load):
250 VAC, 0.2 A max.
42 VDC, 0.2 A max.
(minimum current: 1 mA)