Chapter 2 installation and wiring – Hitachi SJ700-2 User Manual
Page 46
Chapter 2 Installation and Wiring
2 - 24
2.2.5 Selection and wiring of regenerative braking resistor (on 5.5 kW to 22 kW models)
The SJ700-2 series inverter models with capacities of 5.5 to 22 kW have an internal regenerative braking
circuit.
Connecting an optional regenerative braking resistor to RB and P terminals increases the regenerative
torque.
Without a resistor
connected
With a resistor
connected
Minimum connectable
resistor
Model
Motor capacity
(kW)
Regenerative
torque (%)
Resistanc
e of
connecte
d resistor
(Ω)
Regenera
tive
torque
(％)
Resistanc
e
(Ω)
BRD
usage
rate
(％)
Minimum
resistance during
continuous
operation
(Ω)
SJ700-055LFF2 5.5
20
16 100 16 10
50
SJ700-075LFF2 7.5
20
10 80 10 10
50
SJ700-110LFF2 11
10
10 70 10 10
50
SJ700-150LFF2 15
10
7.5 80 7.5 10
35
SJ700-185LFF2 18.5
10
7.5 60 7.5 10
35
SJ700-220LFF2 22
10
5 50 5 10
35
SJ700-055HFF2 5.5
20
70 100 70 10
200
SJ700-075HFF2 7.5
20
70 80 35 10
150
SJ700-110HFF2 11
10
50 80 35 10
150
SJ700-150HFF2 15
10
35 80 24 10
100
SJ700-185HFF2
18.5
10
35 70 24 10
100
SJ700-220HFF2 22
10
35 50 20 10
100