• The VFDs of 380V (≥37kW) need external braking units.
• The VFDs of 660V need external braking units.
• (+), (-) are the wiring terminals of the braking units.
• The wiring length between the (+),(-) terminals of the VFD and the (+),(-)
terminals of the braking units should be no more than 5m,and the distributing
length among BR1 and BR2 and the braking resistor terminals should be no
more than 10m.
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