HD2 Series Inverter Optional Peripheral Accessories
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Note:
⚫ The input EMI meets the C2 requirements after an input filter is configured.
⚫ The preceding table describes external accessories. You need to specify whether external or
built-in accessories are needed in your purchase order.
D.8 Braking system
D.8.1 Braking component selection
When the 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 braking
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 braking components may be caused.
Read the braking resistor or unit instructions carefully before connecting
them to the inverter.
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 inverter and fire may be
caused.
Connect the braking 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.
The 380V 37kW and lower inverter models are equipped with built-in braking units, and the 380V
45kW and higher inverter models need to be configured with external braking units. The 380V 45kW–
110kW inverter models can be configured with optional built-in braking unitsFor a parallel 380V
large-power inverter system, you need to configure the external braking unit that is an optional part.
Select braking resistors according to the specific requirements (such as the braking torque and
braking usage requirements) on site.
Table D–11 Braking units for AC 3PH 380V (-15%)–440V (+10%)
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