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en/ACS800-04/U4 Hardware Manuals - VAE ProSys sro

en/ACS800-04/U4 Hardware Manuals - VAE ProSys sro

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135Protection of frame sizes R2 to R5It is highly recomm<strong>en</strong>ded to equip the drive with a main contactor for safety reasons.Wire the contactor so that it op<strong>en</strong>s in case the resistor overheats. This is ess<strong>en</strong>tialfor safety since the drive will not otherwise be able to interrupt the main supply if thechopper remains conductive in a fault situation.Below is a simple example wiring diagram.L1 L2 L3FusesOFF121234561314ON34<strong>ACS800</strong>U1 V1 W1ΘThermal switch (standardin ABB resistors)K1Resistor braking

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