Braking Resistor ( Rear-Mounted Type ); Braking Resistor ( Small Type ) - Hitachi SJ300 Series Manual

Braking Resistor ( Rear-mounted type )

RS - -
□ □□□ □
43
65
[Figure 1]
Model name Figure
1
RS-L-70-1
200V
1
RS-L-70-2
class
2
RS-L-110-1
RS-H-70-1 1
400V
RS-H-70-2 1
class
RS-H-110-1 2

Braking Resistor ( Small type )

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