Goodrive350 series high-performance multi-function inverter Appendix D
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Note:
1. The input EMI meets the C2 requirements after an input filter is configured.
2. The preceding table describes external accessories. You need to specify the ones you choose
when purchasing accessories.
D.8 Brake system
D.8.1 Brake component selection
When an inverter 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
inverter, causing the bus voltage of the inverter to rise. If the bus voltage exceeds a specific value, the
inverter 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 inverter or brake components may be caused.
Read the brake resistor or unit instructions carefully before connecting
them to the inverter.
Connect brake resistors only to the terminals PB and (+), and brake units
only to the terminals (+) and (-). Do not connect them to other terminals.
Otherwise, damage to the brake circuit and inverter and fire may be
caused.
Connect the brake components to the inverter according to the wiring
diagram. If the wiring is not properly performed, damage to the inverter or
other devices may be caused.
D.8.1.1 Brake units for AC 3PH 380V (-15%)–440V (+10%)
Goodrive350 series inverters of 380 V, 37 kW or lower are equipped with built-in brake units, and
those of 380 V, 45 kW or higher need to be configured with external brake units. Inverters of 45 kW to
110 kW can be configured with optional built-in brake units, and after a built-in brake unit is configured,
the inverter model is added with a suffix "-B", for example, GD350-045G-4-B. Select brake resistors
according to the specific requirements (such as the brake torque and brake usage requirements) on
site.
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