6.2 Trial Operation Procedure6 -56.2 Trial Operation ProcedureThis section explains in detail the procedure shown in the flowchart on the preceding page for the trial operation.6.2.1 Checking the Power Supply VoltageTurn OFF the MCCB on the Converter power supply, and check the power supply input voltage suppliedto the Converter on the primary side of the MCCB. Use a voltmeter or rotation tester that can measure inputvoltage for the measurement. The input voltage tolerance range is shown in the following table.Table 6.1 Power Supply Voltage Tolerance RangeConverter Nominal Voltage/Frequency Voltage Fluctuation TolerationRange200 V Series 200 V/50 to 60 Hz 170 to 242 V220 V/50 to 60 Hz230 V/60 Hz 170 to 253 V400 V Series 380 V 340 to 484 V400 V/50 to 60 Hz440 V/50 to 60 Hz460 V/60 Hz 340 to 506 VNote: The Inverter can operate within the voltage fluctuation range shown in the table above, butmake the following settings for optimum characteristics. 200-V series: 200 to 240 V, and400-V series: 400 to 480 V. If the voltage falls below 200 V or 400 V, lower outputs maynot be possible in the high-speed range as specified. Therefore, if the input voltage can beconverted to within these ranges using transformer tap conversion or other method,opti-mum operation according to the characteristics can be achieved.6.2.2 Setting the YENET1200 Node AddressBefore turning ON the control power supply, set the YENET1200 node address using rotary switch SW1on the Inverter Unit. The node address must agree with the NC Unit node address parameter settings.6.2.3 Turning ON the Control Power SupplyWhen the control power supply is turned ON, “ ” will be displayed on the 7-segment LED display onthe Converter, and “ ” will be displayed on the 7-segment LED display on the Inverter. If the displaydiffers from this, refer to Chapter 12 Troubleshooting for details.Turn ON the control power supply before (or at the same time as) turning ON the main control circuit powersupply. Also, turn OFF the main power supply before (or at the same time as) turning OFF the control powersupply. Failure to observe this precaution can result in the Converter and Inverter malfunctioning.6.2.4 Turning ON the Main Circuit Power SupplyWhen the main circuit power supply is turned ON, the 7-segment LED display on the Converter willchange to “ ”. At the same time, the CHARGE indicators on both the Inverter and Converter will lightred. At this time, if an error is displayed and the above display does not appear, refer to 12.3 Inverter FaultTable for details.If the 7-segment LED display continues to display “ ”, the main circuit input voltage is too low or thephase has been interrupted. Check the input power supply voltage.6IMPORTANT
