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2.2.5 Selection and wiring of regenerative braking resistor (on 5.5 kW to 30 kW models)
The SJ700B series inverter models with capacities of 5.5 to 30 kW have an internal regenerative braking
circuit.
Connecting an optional regenerative braking resistor to RB and P terminals increases the regenerative
torque.
Motor capacity
Model
(kW)
SJ700B-055HFF
SJ700B-075HFF
SJ700B-110HFF
SJ700B-150HFF
SJ700B-185HFF
SJ700B-220HFF
SJ700B-300HFF
Without a resistor
connected
Regenerative
torque (%)
5.5
20
7.5
20
11
20
15
10
18.5
10
22
10
30
10
Chapter 2 Installation and Wiring
With a resistor
Minimum connectable
connected
Resistanc
Regenera
e of
Resistanc
tive
connecte
torque
d resistor
(％)
(Ω)
70
100
70
100
70
50
50
70
35
80
35
70
35
50
2 - 21
resistor
Minimum
resistance during
BRD
continuous
usage
operation
e
rate
(Ω)
(％)
70
10
70
10
35
10
35
10
24
10
24
10
20
10
(Ω)
200
200
150
150
100
100
100
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