Braking System; Braking Component Selection - INVT Goodrive350 Series Operation Manual

Goodrive350 series high-performance multifunction VFD
VFD model
GD350-400G-6
GD350-450G-6
GD350-500G-6
GD350-560G-6
GD350-630G-6
Note:
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The input EMI meets the C2 requirements after an input filter is configured.
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The preceding table describes external accessories. You need to specify the ones you choose
when purchasing accessories.
D.8 Braking system
D.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.
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The 380V 37kW and lower VFD models are equipped with built-in braking units, and the 380V 45kW
and higher VFD models need to be configured with external braking units. The 380V 45kW–110kW
VFD models can be configured with optional built-in braking units. After a built-in braking unit is
configured for the VFD, the VFD model is added with a suffix "-B", for example, GD350-045G-4-B.
Select braking resistors according to the specific requirements (such as the braking torque and
braking usage requirements) on site.
Input filter
FLT-P061000H-B
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 braking components may be caused.
Read the braking resistor or unit instructions carefully before connecting
them to the VFD.
Connect braking resistors only to the terminals PB and (+), and braking units
only to the terminals (+) and (-). Do not connect them to other terminals.
Otherwise, damage to the braking circuit and VFD and fire may be caused.
Connect the braking 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.
-350-
Optional peripheral accessories
Output filter
FLT-L061000H