Hitachi SJ300 Series

37
The internal thermal contact capacity is 250V
AC, 2A max. It is on under normal condition
(NC contact).
Prevents abnormal heat resulting from the incor-
rect use by internal temperature fuse. (recovery
not possible).
When the temperature relay is activated,
reduce regenerative energy by stopping the
inverter or by increasing deceleration time.
Please connect the same two braking resistors
with the series when using for class of 400V.
Note 1:
2:
3:
4:
Braking Resistor
(
Rear-mounted type
)
RS □-□□□-□
Braking Resistor
(
Small type
)
JRB
-
□□□
●Circuit Diagram
●Connecting Diagram
●Dimensional Drawings
[Figure 1]
[Figure 2]
104 136
16
43
65
40
130
（2）
4.5
13010
6.5
300
164 196
16
43
65
40
130
（2）
5
. 4
19010
5
.
6
300
.
Lead wire
length
Mark band
P
RB
PP
RB
1
2
P
NN
Inverter
Dynamic
braking unit Braking resistor
Alarm contact (NC contact)
ON under normal condition
Model name
RS-L-70-1
RS-L-70-2
RS-L-110-1
RS-H-70-1
RS-H-70-2
200V
class
400V
class
RS-H-110-1
075-110LF□
007-
055HF□
004-055LF□
015-055LF□
075-110HF□
1
1
2
1
1
2
Resistance value
Applicable inverter
50Ω
35Ω
17Ω
150Ω
100Ω
50Ω
Rated capacity
70W
70W
110W
70W
70W
110W
0.4
0.4
0.5
0.4
0.4
0.5
2.5 sec.
1.8 sec.
1.4 sec.
2 sec.
1.3 sec.
1 sec.
1.25
0.5
0.3
0.6
0.3
0.15
2500W
3700W
7600W
3400W
5100W
10000W
Instantaneous
capacity
Allowable braking
cycle
(
%ED
)
Overheat protection
Protected by the
thermal fuse
inside the resistor
Weight(kg)
Figure
Allowable continuous
ON period
[
Unit: mm
]
model name
JRB-120-1
JRB-120-2
JRB-120-3
JRB-120-4
Capacity
120
Resistance value
180Ω
100Ω
50Ω
35Ω
Allowable breaking cycle
5%
2.5%
1.5%
1.0%
Allowable continuous ON period
20sec.
12sec.
5sec.
3sec.
Weight(kg)
0.27
[
Unit: mm
]