Hitachi SH1-900H

2-13
Chapter 2
Installation and Wiring
2.8 Chopper Braking Resistor
SH1 Series has a built-in chopper braking circuit in model below.
SH1-00041-H (007H) to SH1-00930-H (370H)
• By using an optional braking resistor, permit to use for high
regeneration load application such as lift or high speed load.
■400V
Model
SH1-******
(SH1-****)
Appli-
cable
motor
(kW)
Min.
Resis
tor
(Ω)
Resistor
selection
Ex. (Ω)
Braking Resistor
Model
Usage
ratio
(%)
Short
period
capacity
(kW)
Rated
capacity
(kW)
00041-H
(007H)
0.75
100
360
SRB200-1
×2series
10
1.4
0.4
00054-H
(015H)
1.5
100
100
SRB200-1
×2series
10
1.4
0.4
00083-H
(022H)
2.2
100
100
SRB200-2
×2series
7.5
2.5
0.4
00126-H
(037H)
3.7
70
100
SRB300-1
×2 series
7.5
5
0.6
00175-H
(055H)
5.5
70
100
SRB300-1
×2 series
7.5
5
0.6
00250-H
(075H)
7.5
35
70
SRB400-1
×2 series
7.5
7.2
0.8
00310-H
(110H)
11
35
50
RB1
×2 series
×2 parallel
10
10.4
1.6
00400-H
(150H)
15
24
35
RB2
×2 series
×2parallel
10
15.2
2.4
00470-H
(185H)
18.5
24
35
RB2
×2 series
×2parallel
10
15.2
2.4
00620-H
(220H)
22
20
25
RB1
×2 series
×4parallel
10
20.8
3.2
00770-H
(300H)
30
15
17
RB3
×2 series
×2parallel
10
30.8
4.8
00930-H
(370H)
37
15
17
RB3
×2 series
×2parallel
10
30.8
4.8
01160-H
(450H)
45
10
10
CA-KB
(10Ω5unit)
10
45
17
01470-H
(550H)
55
10
10
CA-KB
(10Ω5unit)
10
45
17
 When using regenerative resistor SRB series and RB series in
400V class, be sure to use two in series because of the
restriction of withstanding voltage of the resistor.
Example: In the case of RB2 × 2 series × 2 parallel,
a total of 4 RB2s are required.
• SH1 Series can offer when desired a built-in chopper braking circuit
in models below.
SH1-01160-H (450H) to SH1-01470-H (550H)
• Using optional braking unit or regenerative unit, permit to use on
high regenerative load application even for models without built-in
chopper braking circuit.
• The table below shows an example selection of braking resistor to
output 100% of braking torque for each motor rating on list.