Omron SMARTSTEP A Series - Page 181

Chapter 3
3-41
System Design and Installation
■ External Regeneration Resistors
● Specifications
Note The following external regeneration resistors are recommended products from another manu-
facturer, Iwaki Musen Kenkyujo. For details, refer to the manufacturer’s documentation.
RH120N50ΩJ 50 Ω ± 5% 30 W (Amount of regeneration at 120°C)
RH300N50
ΩJ 50 Ω ± 5% 75 W (Amount of regeneration at 120°C)
RH500N50
ΩJ 50 Ω ± 5% 100 W (Amount of regeneration at 120°C)
● Combining External Regeneration Resistors
Note A combination cannot be used if the resistance is less than the minimum connection resistance
for any given Servo Driver. Refer to the following table for the minimum connection resistance
values for each Servo Driver, and select a suitable combination.
■ Servo Driver Minimum Connection Resistance and External
Regeneration Resistor Combinations
Model Resistance Nominal
capacity
Regeneration
absorption at
120
°C
Heat radiation Thermal switch
output
R88D-RR22047S
External Regen-
eration Resistor
47
Ω ± 5% 220 W 70 W t1.0 × @350
(SPCC)
Operating tem-
perature: 170
°C
NC contact
Servo Driver Minimum Connection
Resistance (
Ω)
External Regeneration Resistor Combinations
R7D-AP04L 40
,
R7D-AP04H 40
,
R7D-AP08H 40
, ,
1 70W (47 Ω) 2 280W (47 Ω) 3 630W (47 Ω)
R
R R
R R
R R
R
R
R RR
R R
1
1
2
2
1
1
2
2
1
1
2
2
3
3