Brake Resistors And Brake Units Used In Ac Motor Drives - Delta VFD-ED Series User Manual

Chapter 6 Optional Accessories | VFD-ED
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 Drive
Model
VFD022ED21S
VFD037ED21S
VFD040ED23S
VFD055ED23S
VFD075ED23S
230V VFD110ED23S
VFD150ED23S
VFD185ED23S
VFD220ED23S
VFD300ED23S
VFD370ED23S
VFD040ED43S
VFD055ED43S
VFD075ED43S
VFD110ED43S
VFD150ED43S
VFD185ED43S
460V
VFD220ED43S
VFD300ED43S
VFD370ED43S
VFD450ED43S
VFD550ED43S
VFD750ED43S
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.
* If you choose other brake resistors instead of Deltas, calculate the maximum power and average power of t he
3
selected braking power to ensure that they meet the requirements. Maximum power: Vb
Vb /R x ED%. (Vb stands for braking voltage; R stands for brake resistor value.)
2
* 4 The calculation of the brake resistor value and braking power is based on Delta's brake resistor.
IM 10% ED*
Suggested
Min. Resistor
Resistor Value*
Value* 3 (Ω)
(Ω)
38.0 70.0
19.0 30.0
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
4.8 5.1
3.2 3.9
54.3 100.0
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
1
Suggested
Min. Resistor
Braking Power
4
Value (Ω)
(kW)
0.3
0.5
0.5
1.0
1.0
1.5
2.0
2.0
3.0
4.0
4.8
0.5
1.0
1.0
1.5
2.0
2.0
3.0
4.0
4.5
6.0
8.0
9.0
6-2
PM 30% ED* 2
Suggested
Resistor Value
(Ω)
38.0 50.0
19.0 32.0
19.0 32.0
15.6 25.0
11.5 16.7
9.5 12.5
8.3 10.0
5.8 7.8
5.8 6.5
4.8 5.0
3.2 3.6
54.3 100.0
48.4 100.0
39.4 60.0
30.8 50.0
25 39.0
20.8 26.0
19.0 26.0
14.1 19.5
13.8 15.6
10.3 13.0
6.9 9.8
6.4 7.1
2 /R; average power:
Suggested
Braking Power
(kW)
1.0
1.5
1.5
2.0
3.0
4.0
5.0
7.5
9.0
10.0
14.0
2.0
2.0
3.0
4.0
6.0
7.2
9.0
12.0
15.0
18.0
19.2
26.4
Table 6-1