Goodrive350A series high-performance multifunction VFD
Optional peripheral accessories
-411-
Note:
The input EMI meets the C2 requirements after an input filter is configured.
The preceding table describes external accessories. You need to specify the ones you choose
when purchasing accessories.
D.8 Braking system
D.8.1 Brake 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 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 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 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.
The VFD models of 037G/045P and lower are equipped with built-in braking units, and those of
045G/055P and higher need to be configured with external braking units. The VFD models of
045G/055P
–055G/075P can be configured with optional built-in braking units, and after a built-in
braking unit is configured, the VFD model code is added with a suffix "-B", for example,
GD350A-045G/055P-4-B. Select braking resistors according to the specific requirements (such as the
brake torque and brake usage requirements) on site.
Table D.5 Braking units for AC 3PH 380V(-15%)
–440V(+10%)
