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

Measurement of main circuit voltages,currents and powersMeasuring points and instrumentsItemPower supply voltageV1Power supply sidecurrentI1Power supply sidepowerP1Power supply sidepower factorPf1Output side voltageV2Output side currentI2Output side powerP2Output side powerfactorPf2MeasuringPointAcross R/L1-S/L2, S/L2-T/L3, T/L3-R/L1R/L1, S/L2, andT/L3 line currentsR/L1, S/L2, T/L3 andR/L1-S/L2, S/L2-T/L3, T/L3-R/L1Measuring InstrumentMoving-iron type AC voltmeterMoving-iron type AC ammeterElectrodynamic type single-phasewattmeterRemarks (Reference Measured Value)Commercial power supplyWithin permissible AC voltage fluctuation(Refer to page 406)P1=W11+W12+W13 (3-wattmeter method)Calculate after measuring power supply voltage, power supply side current and power supply side power.P1Pf1 = ————— × 100%3 V1 × I1Across U-V, V-Wand W-UU, V and W linecurrentsU, V, W and U-V,V-WRectifier type AC voltage meter *1(Moving-iron type cannotmeasure)Moving-iron type AC ammeter *2Electrodynamic type single-phasewattmeterCalculate in similar manner to power supply side power factor.P2Pf2 = ————— × 100%3 V2 × I2Difference between the phases is within ±1% ofthe maximum output voltage.Difference between the phases is 10% or lower ofthe rated inverter current.P2 = W21 + W222-wattmeter method (or 3-wattmeter method)Converter output Across P/+-N/− Moving-coil type (such as tester) Inverter LED display is lit. 1.35 × V1Frequency settingsignalAcross 2, 4(+)-5Across 1(+)-50 to 10VDC, 4 to 20mA0 to ±5VDC, 0 to ±10VDCFrequency setting Across 10 (+) -55.2VDCpower supply Across 10E(+)-510VDCFrequency metersignalStart signalSelect signalResetOutput stopAlarm signalAcross AM(+)-5Across FM(+)-SDAcross STF, STR,RH, RM, RL, JOG,RT, AU, STOP, CS(+) -SDAcross RES (+) -SDAcross MRS (+) -SDAcross A1-C1Across B1-C1Moving-coil type(Tester and such may be used)(Internal resistance: 50kΩ orlarger)Moving-coil type(such as tester)Approximately 10VDC at maximumfrequency(without frequency meter)Approximately 5VDC at maximumfrequency(without frequency meter)T2Pulse width T1:Adjusted by C0 (Pr. 900)Pulse cycle T2: Set by Pr. 55(Valid for frequencymonitoring only)When open20 to 30VDCON voltage: 1V or less"5" iscommon"SD" iscommonContinuity check*3 Across A1-C1 Discontinuity ContinuityAcross B1-C1 Continuity Discontinuity*1 Use an FFT to measure the output voltage accurately. A tester or general measuring instrument cannot measure accurately.*2 When the carrier frequency exceeds 5kHz, do not use this instrument since using it may increase eddy-current losses produced in metal partsinside the instrument, leading to burnout. If the wiring length between the inverter and motor is long, the instrument and CT may generateheat due to line-to-line leakage current.*3 When the setting of Pr. 195 ABC1 terminal function selection is positive logic8VDCT1PRECAUTIONS FOR MAINTENANCE AND INSPECTION6401