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Chapter 6 Optional Accessories | IED-S
The optional accessories listed in this chapter are available upon request. Installing additional
accessories to your drive can substantially improve the drive's performance. Select accessories
according to your needs or contact your local distributor for suggestions.
6-1 Brake Resistors and Brake Units Used in AC Motor Drives
Recommended Model Selection
Delta's Motor
Min. Resistor
Drive Model
IED022S21A
IED037S21A
IED055S23A
IED075S23A
230V
IED110S23A
IED150S23A
IED185S23A
IED220S23A
IED055S43A
IED075S43A
IED110S43A
IED150S43A
IED185S43A
460V
IED220S43A
IED300S43A
IED370S43A
IED450S43A
IED550S43A
IED750S43A
1
The brake resistor should be able to endure 10 times the overload capacity.
*
2
*
The brake resistor should be able to endure 3.3 times the overload capacity.
3
*
If you choose other brake resistors instead of Delta's, calculate the maximum power and average power of the
selected braking power to ensure that they meet the requirements. Maximum power: Vb
Vb
2
/R x ED%. (Vb stands for braking voltage; R stands for brake resistor value.)
*
4
The calculation of the brake resistor value and braking power is based on Delta's brake resistor.
1
IM 10%ED *
Suggested
3
Value*
Resistor Value*
(Ω)
(Ω)
38.0
70.0
19.0
30.0
15.6
20.0
11.5
20.0
9.5
13.0
8.3
10.0
5.8
8.0
5.8
6.6
48.4
75.0
39.4
75.0
30.8
43.0
25.0
32.0
20.8
32.0
19.0
26.0
14.1
20.0
12.7
14.3
12.7
13.0
9.5
10.2
6.3
7.2
Suggested
Min. Resistor
4
Braking Power
Value
(kW)
(Ω)
0.3
38.0
0.5
19.0
1.0
15.6
1.0
11.5
1.5
9.5
2.0
8.3
2.0
5.8
3.0
5.8
1.0
48.4
1.0
39.4
1.5
30.8
2.0
25
2.0
20.8
3.0
19.0
4.0
14.1
4.5
13.8
6.0
10.3
8.0
6.9
9.0
6.4
6-2
2
PM 30%*
Suggested
Suggested
Resistor Value
Braking Power
(Ω)
(kW)
50.0
1.0
32.0
1.5
25.0
2.0
16.7
3.0
12.5
4.0
10.0
5.0
7.8
7.5
6.5
9.0
100.0
2.0
60.0
3.0
50.0
4.0
39.0
6.0
26.0
7.2
26.0
9.0
19.5
12.0
15.6
15.0
13.0
18.0
9.8
19.2
7.1
26.4
2
/R; average power:
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