Regenerative Energy Absorption With An External Regeneration Resistor - Omron OMNUC G5 R88M-K series User Manual

4-4 Regenerative Energy Absorption

Regenerative Energy Absorption with an External Regeneration Resistor

If the regenerative energy exceeds the regeneration absorption capacity of the drive, connect
an External Regeneration Resistor.
Connect the External Regeneration Resistor between B1 and B2 terminals on the drive.
Double-check the terminal names when connecting the resistor because the drive may be
damaged if connected to the wrong terminals.
The External Regeneration Resistor will heat up to approx. 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
Characteristics
4
R88A-
RR08050S
R88A-
RR080100S
R88A-
RR22047S
R88A-
RR50020S
4-43
Resistance Nominal
Model
value capacity
50 
80 W
100 
80 W
47 
220 W
20 
500 W
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
The amount of
Heat
regeneration
radiation
absorption for 120C
condition
temperature rise
Aluminum
250  250,
20 W
Thickness: 3.0
Aluminum
250  250,
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 temperature
150C  5% NC contact
Rated output: 30 VDC, 
50 mA max.
Operating temperature
150C  5% NC contact
Rated output: 30 VDC, 
50 mA max.
Operating temperature:
170  7C
NC contact
Rated output: 250 VAC,
0.2 A max.
Operating temperature
200  7C
NC contact
Rated output: 250 VAC,
0.2 A max.
24 VDC, 0.2 A max.