INVT Goodrive600 Series Operation Manual page 415

Goodrive600 series high-performance multifunction VFD
 The accessories in the preceding tables are external. You need to specify the ones you choose when purchasing
accessories.
E.8 Braking system
E.8.1 Braking component 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 braking components.
 The design, installation, commissioning, and operation of the device must be

 Only qualified electricians are allowed to perform the wiring. Otherwise, damage to the
 Read the braking resistor or unit instructions carefully before connecting them to the
 Connect braking resistors only to the terminals PB and (+), and braking units only to
 Connect the braking components to the VFD according to the wiring diagram. If the
E.8.2 Braking unit
The 45kW rectifier unit model is equipped with the built-in braking unit, and other rectifier unit models can be configured
only with external braking units. Select braking resistors according to the specific requirements (such as the braking
torque and braking usage) on site.
VFD model
GD600-71-045-4-B
GD600-71-160-4
GD600-71-355-4
Note:
 Select braking resistors according to the resistance and power data provided by our company.
 The braking resistor may increase the braking torque of the VFD. The preceding table describes the resistance and
power for 100% braking torque, 10% braking usage, 50% braking usage, and 80% braking usage. You can select the
braking system based on the actual operation conditions.
 When using an external braking unit, set the brake voltage class of the braking unit properly by referring to the
manual of the dynamic braking unit. If the voltage class is set incorrectly, the VFD may not run properly.
performed by trained and qualified professionals.
Follow all the "Warning" instructions during the operation. Otherwise, major physical
injuries or property loss may be caused.
VFD or braking components may be caused.
VFD.
the terminals (+) and (-). Do not connect them to other terminals. Otherwise, damage
to the braking circuit and VFD and fire may be caused.
wiring is not properly performed, damage to the VFD or other devices may be caused.
Braking unit model
Built-in braking unit
DBU100H-320-4
DBU100H-320-4×2
Resistance Braking resistor dissipation
applicable
for 100%
braking 10%
torque
braking
(Ω)
usage
10 7
3.1 24
3.2*2 24*2
-407-
Optional peripheral accessories
power
allowed
(kW)
braking
50% 80%
resistance
braking braking
usage usage
34 54
120 192
118*2 189*2
Min.
(Ω)
6.4
2.2
2.2*2