12.8  Regenerative Resistor
 12.8.6  Selecting External Regenerative Resistor
12
SERVOPACK Peripheral Devices
12-43
 SERVOPACK-absorbable Energy
The following figures show the relationship between the SERVOPACK’s input power supply 
voltage and its absorbable energy.
Σ
-7S SERVOPACKs
Input Voltage (Vrms)
Model SGD7S-
R70A, R90A, 1R6A
2R8A
3R8A
5R5A, 7R6A
170 180 190 200 210 220 230 240 250 260 270
0 
10 
20 
30 
40 
50 
60 
70 
80 
Input Voltage (Vrms)
Model SGD7S-
170 180 190 200 210 220 230 240 250 260 270
0 
Input Voltage (Vrms)
Model SGD7S-
470A
550A
590A
780A
170 180 190 200 210 220 230 240 250 260 270
0
100
200
300
400
500
600
20 
40 
60 
80 
100 
120 
140 
160 
180 
Absorbable Energy (J)
Absorbable Energy (J)
Absorbable Energy (J)
120A (three-phase)
330A
120A (single-phase), 180A, or 200A
Input Voltage (Vrms)
Model SGD7S-
R70F, R90F, 2R1F
2R8F
80 90 100 110 120 130 140
0
10
20
30
40
50
70
60
Absorbable Energy (J)
1R6A
2R8A
5R5A, 7R6A
170 180 190 200 210 220 230 240 250 260 270
0 
20 
40 
60 
80 
100 
120 
Input Voltage (Vrms)
Model SGD7C-
1R6A
2R8A
5R5A, 7R6A
170 180 190 200 210 220 230 240 250 260 270
0 
20 
40 
60 
80 
100 
120 
Input Voltage (Vrms)
Model SGD7W-
Absorbable Energy (J)
Absorbable Energy (J)
Σ
-7W SERVOPACKs 
Σ
-7C SERVOPACKs