INVT Goodrive30 VFD Series User Manual

Goodrive30 Series VFD Optional peripheral accessories
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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.
VFD model
Braking
unit
model
Resistance
applicable
for 100%
brake torque
(Ω)
Dissipated power of braking resistor
(kW)
Min.
allowable
brake
resistance
(Ω)
10% brake
usage
50% brake
usage
80% brake
usage
GD30-0R4G-S2
Built-in
braking
unit
361
0.06
0.30
0.48
42
GD30-0R7G-S2
192
0.11
0.56
0.90
42
GD30-1R5G-S2
96
0.23
1.10
1.80
30
GD30-2R2G-S2
65
0.33
1.70
2.64
21
GD30-0R4G-2
361
0.06
0.3
0.48
131
GD30-0R7G-2
192
0.11
0.56
0.9
93
GD30-1R5G-2
96
0.23
1.1
1.8
44
GD30-2R2G-2
65
0.33
1.7
2.64
44
GD30-004G-2
36
0.6
3
4.8
33
GD30-5R5G-2
26
0.75
4.13
6.6
25
GD30-7R5G-2
19
1.13
5.63
9
13
GD30-0R7G-4
653
0.11
0.56
0.90
240

INVT Goodrive30 VFD Series Specifications

General

Brand	INVT
Model	Goodrive30 VFD Series
Category	Inverter
Language	English