Braking Resistor Installation - INVT Goodrive20-EU Series Operation Manual

Goodrive20-EU Series VFD
Model
GD20-1R5G-4-EU
GD20-2R2G-4-EU
GD20-004G-4-EU
GD20-5R5G-4-EU
GD20-7R5G-4-EU
GD20-011G-4-EU
GD20-015G-4-EU
GD20-018G-4-EU
GD20-022G-4-EU
GD20-030G-4-EU
GD20-037G-4-EU
GD20-045G-4-B-EU
GD20-055G-4-B-EU
GD20-075G-4-B-EU
GD20-090G-4-B-EU
GD20-110G-4-B-EU
Note:
 Select the resistor and power of the braking unit according to the data our company
provided.
 The braking resistor may increase the braking torque of the VFD. The resistor power in the
above table is designed on 100% braking torque and 10% braking usage ratio. If the users
need more braking torque, the braking resistor can decrease properly and the power needs
to be magnified.
 Never use a braking resistor with a resistance below the minimum value
 Increase the power of the braking resistor properly in the frequent braking
C.7.2 Braking resistor installation
Braking resistor cables need to be shielded cables.
Install all resistors in a place where they will cool.
Braking
Type of resistor at
braking 100% of
unit braking
torque (Ω)
specified for the particular drive. The drive and the internal chopper are
not able to handle the overcurrent caused by the low resistance.
situation (the frequency usage ratio is more than 10%).
Consumed power of the braking
10%
braking
326 0.23
222 0.33
122 0.6
89.1 0.75
65.3 1.13
44.5 1.65
32.0 2.25
27 3
22 3
17 5
13 6
10 7
8 8
6.5 11
5.4 14
4.5 17
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Optional peripheral accessories
resistor (kW)
50% 80%
braking braking
1.13 1.80
1.65 2.64
3
4.13
5.63
8.25 13.2
11.3
14
17
23
28
34
41
56
68
83
Min.
braking
resistor
(Ω)
170
130
4.8 80
6.6 60
9 47
31
18 23
22 19
26 17
36 17
44 11.7
54 8
66 8
90 6.4
108 4.4
132 4.4