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.
RH120N50
Ω
J 50
Ω ±
5% 30 W (Amount of regeneration at 120
°
C)
RH300N50
Ω
J 50
Ω ±
5% 75 W (Amount of regeneration at 120
°
C)
RH500N50
Ω
J 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
R
R
R
R
1
1
2
2
1
1
2
2
1
1
2
2
3
3
Summary of Contents for SMARTSTEP A Series
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