Hitachi SJ300-037HFE 사용자 설명서
Dynamic Braking
Motor Contro
l
Ac
cess
or
ies
5–8
Choosing a
Braking Unit
Braking Unit
The SJ300 Series 200V and 400V class inverter models in the 20 to 200 hp range require
external braking units to increase their braking torque. Braking units come in sizes correspond-
ing to the power handing requirements for particular resistor selections. Be sure to follow the
installation instructions accompanying each braking unit. The following table lists the SJ300
inverter models and their applicable braking units.
external braking units to increase their braking torque. Braking units come in sizes correspond-
ing to the power handing requirements for particular resistor selections. Be sure to follow the
installation instructions accompanying each braking unit. The following table lists the SJ300
inverter models and their applicable braking units.
20 to 200 hp (15 to 1500 kW)
Performance Versus External Braking Units
Without
Braking
Braking
Unit
With Braking Unit
Voltage
Class
Model Number
SJ300
Motor
hp
Braking
Torque,
%
Braking Unit
Model
Minimum
Resistance,
Ohms
Max.
Braking
Duty Cycle,
%
Minimum
Resistance
@ 100%
Braking
Duty Cycle,
Ohms
200V
–150LFU
20
10
BRD–E2
17
10
46
10
BRD–E2–30K
4
20
6
–185LFU
25
10
BRD–E2
17
10
46
10
BRD–E2–30K
4
20
6
–220LFU
30
10
BRD–E2
17
10
46
10
BRD–E2–30K
4
20
6
–300LFU
40
10
BRD–E2–30K
2
20
6
10
BRD–E2–55K
2
20
4
–370LFU
50
10
BRD–E2–55K
2
20
4
–450LFU
60
10
BRD–E2–55K
2
20
4
–550LFU
75
10
BRD–E2–55K
2
20
4
400V
–150HFU/HFE
20
10
BRD–EZ2
20
10
34
10
BRD–EZ2–30K
10
10
24
–185HFU/HFE
25
10
BRD–EZ2
20
10
34
10
BRD–EZ2–30K
10
10
24
–220HFU/HFE
30
10
BRD–EZ2
20
10
34
10
BRD–EZ2–30K
10
10
24
–300HFU/HFE
40
10
BRD–EZ2–55K
6
20
12
–370HFU/HFE
50
10
BRD–EZ2–55K
6
20
12
–450HFU/HFE
60
10
BRD–EZ2–55K
6
20
12
–550HFU/HFE
75
10
BRD–EZ2–55K
6
20
12
–750HFU/HFE
100
10
BRD–EZ2–55K
6
20
12
–900HFU/HFE
125
10
BRD–EZ2–55K
6
20
12
–1100HFU/HFE
150
10
BRD–EZ2–55K
6
20
12
–1320HFE
175
10
BRD–EZ2–55K
6
20
12
–1500HFU
200
10
BRD–EZ2–55K
6
20
12