FR-A701 INSTRUCTION MANUAL (Applied) - Automation Systems ...

Main circuit terminal specifications(3) Total wiring lengthThe overall wiring length for connection of a single motor or multiple motors should be within 500m.(The wiring length should be 100m maximum for vector control.)Total wiring length500m or less300mWhen driving a 400V class motor by the inverter, surge voltages attributable to the wiring constants may occur atthe motor terminals, deteriorating the insulation of the motor.Refer to page 45 for measures against deteriorated insulation.CAUTION· Especially for long-distance wiring, the inverter may be affected by a charging current caused by the stray capacitances of thewiring, leading to a malfunction of the overcurrent protective function or fast response current limit function or a malfunction or faultof the equipment connected on the inverter output side. If fast response current limit function malfunctions, disable this function.(For Pr. 156 Stall prevention operation selection, refer to page 135 .)(4) Cable size of the control circuit power supply (terminal R1/L11, S1/L21)· Terminal screw size: M4· Cable size: 0.75mm 2 to 2mm 2· Tightening torque: 1.5N·m300m300m + 300m = 600m20