Goodrive20 Series VFD
Optional peripheral accessories
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The preceding table describes external accessories. You need to specify the ones you
choose when purchasing accessories.
C.7 Braking resistors
C.7.1 Braking resistor selection
When the VFD driving a high-inertia load decelerates or needs to decelerate abruptly, the
motor runs in the power generation state and transmits the load-carrying energy to the DC
circuit of the VFD, causing the bus voltage of the VFD to rise. If the bus voltage exceeds a
specific value, the VFD reports an overvoltage fault. To prevent this from happening, you need
to configure brake components.
The design, installation, commissioning, and operation of the device must
be performed by trained and qualified professionals.
Follow all the "Warning" instructions during the operation. Otherwise, major
physical injuries or property loss may be caused.
Only qualified electricians are allowed to perform the wiring. Otherwise,
damage to the VFD or brake components may be caused.
Read the braking resistor instructions carefully before connecting them to
the VFD.
Connect braking resistors only to the terminals PB and (+). Do not connect
them to other terminals. Otherwise, damage to the brake circuit and VFD
and fire may be caused.
Connect the brake components to the VFD according to the wiring
diagram. If the wiring is not properly performed, damage to the VFD or
other devices may be caused.
Model
Type of
braking
unit
Braking
resistor at
100% of
braking torque
(
Ω)
Consumed power of braking
resistor
Min braking
resistor (Ω)
10%
braking
50%
braking
80%
braking
GD20-0R4G-S2
Built-in
braking
unit
361
0.06
0.30
0.48
42
GD20-0R7G-S2
192
0.11
0.56
0.90
42
GD20-1R5G-S2
96
0.23
1.10
1.80
30
GD20-2R2G-S2
65
0.33
1.70
2.64
21
GD20-0R4G-2
361
0.06
0.3
0.48
131
GD20-0R7G-2
192
0.11
0.56
0.9
93
GD20-1R5G-2
96
0.23
1.1
1.8
44
GD20-2R2G-2
65
0.33
1.7
2.64
44
GD20-004G-2
36
0.6
3
4.8
33
Содержание GD20-004G-2
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