NSD NCV-20NBNVP Specifications & Instruction Manual
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Contents
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9. MAINTENANCE and INSPECTIONSThe inspection should be conducted once every 6 months to a year.Any inspected items which do not satisfy the criteria shown below should be repaired.9-1. InspectionInspectionitem Inspection Description Criteria RemarkPowersupplyMeasure the voltage fluctuation at the power supplyterminal block to determine if it is within theprescribed range.Power supply voltagefluctuation must be within21.6V to 26.4VDC rangeTesterCheck the ambient temperature. Sensor: -20 to +60°CConverter: 0 to +55°C ThermometerAmbientConditions There should be no accumulation of dust. NoneVerify that the sensor is securely mounted. There should be nolooseness.Verify that the sensor shaft is securely coupled to themachine shaft.There should be nolooseness.Check for severed cables. Cable should appearnormal.VisualInspectionVerify that the sensor cable connector is plugged inall the way.There should be nolooseness.MountConditionsVerify that the I/O connector is plugged in all the way. There should be nolooseness.9-2. TroubleshootingThe causes and corrective actions for errors that may occur during NCV-20 operation are described below.Error item Cause CountermeasureSensor connector is disconnected.Sensor connector is loose. Secure the connectorSensordisconnected LED(SE) is ON. Sensor cable is severed. Replace the sensor cableCoupling of sensor shaft and machine shaft is loose.Deviation in originpoint position. Sensor mounting is loose. Secure the coupling or mounting.Latch pulse output signal and position data readingtiming is improper.HOLD input signal and position data reading timing isimproper.Correct the reading timing.Incorrect positiondata outputThe wiring of the output signal has problems. Repair the wiring.The function setting switch is incorrect. Change the setting.The voltage of the power supply for input and output isout of prescribed range.Supply the correct power voltage.21.6V to 26.4VDCPosition dataHOLD doesn’toccur. The wiring of the input signal has problems. Repair the wiring.The function setting switch is incorrect. Change the setting.The voltage of the power supply for input and output isout of prescribed range.Supply the correct power voltage.21.6V to 26.4VDC“HD”(the external input signal) is ON. Check the signal.No position dataoutputThe wiring of the output signal has problems. Repair the wiring.If the troubleshooting procedures described above fail to solve the problem, the sensor or converter may bedefective. In this case, please contact your NSD representative.29 |
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