Maintenance and Inspection, Inspection Items | Hitachi J300U Series

10. MAINTENANCE AND INSPECTION

10.1Maintenance and Inspection Precautions

WARNING

*Be sure to turn off the power supply during maintenance and inspection.

*After the power supply has been turned off, you must always wait 10 minutes so that DC bus capacitors can discharge then start maintenance and inspection after the CHARGE lamp on the printed-circuit board has gone out. (Immediately after the lamp has gone out, there will be a residual voltage of about 50 V DC in the DC bus intermediatecircuit.)

Perform the work after the CHARGE lamp has stopped flickering.

*Make sure that only qualified persons will perform maintenance, inspection and part replacement. (Before starting the work, remove metallic objects from your person (wristwatch, bracelet, etc.)

(Be sure to use tools protected with insulation.)

Otherwise, there is a danger of electric shock and/or injury.

CAUTION

*When removing connectors, never pull the wires. (Wires for cooling fan and thermal relay)

Otherwise, there is a danger of fire due to wire breakage and/or injury.

• General precautions

Always keep the unit clean so that dust or other foreign matter does not enter the inverter. Take special care in regard to breaking lines and connection mistakes. Firmly connect terminals and connectors. Keep electronic equipment away from moisture and oil. Dust, steel filings and other foreign matter can damage insulation, causing unexpected accidents, so take special care.

10.2Inspection Items

(1) Daily inspection

(2) Periodic inspection (Approximately once a year)

See 10-3.

(3) Insulation resistance tests, withstand voltage tests

10-1

Image 82

Hitachi J300U Series instruction manual Maintenance and Inspection Precautions, Inspection Items, 10-1

Contents

J300 Series Safety Definitions and Symbols Precautions Page Revision History Table Iii Pollution degree Aug Table of Contents Safety Precautions Installation Inputoutput Noise filter Fuse Good example Power supply Input phase failure protectionBad example Control and operation Maintenance, inspection and part replacement Appendix Earth leakage breaker Mgo Megohm-meterTurn on and OFF Good example Supply Leading power factor capacitor Earth LeakageSurge absorber breaker PowerMotor To be grounded or shielded wire General Caution Contents of Specifications Label Inspection Upon Unpacking Appearance and Names of Parts Names of Parts Installation Be sure to check the ambient temperature Precaution for installation and wiring Vent hole Cm or more Wiring Power supply Dynamic Braking Resistor Braking Units Wiring the Power Supply and MotorL3 RB + T1 T2 T3 PE ELB Improper grounding Proper grounding Inverter Inverter At the site FM CM1 PLC P24 CM2 AL2 AL1 AL0 Wiring of Control Circuit TerminalsCM2 AL2 AL1 AL0 Page Connection to the Programmable Controller Magnetic Wiring Equipment, Options EMI filter, etcStandard equipment Power supply 200V class Inverter Terminal RB P Common for frequency command Output Free run input signalCurrent frequency command Run signal 27 VDC Intelligent output signal Control Circuit Terminals PLC Contact rating 250 VAC Resistor load Abnormal, Power offAL0-AL1 open Cosø=0.4 10 mA 30 VDC Resistor load Terminal Connection Diagram Operation Before Starting OperationPage Test Run Running from external commandFor sink type wiring Operating with digital operator Key to Key to set Press Key and then press PressKey to set Press Key to Contact specification Contact b Contact a Resetting Any one of A, B and C is possible Operation of the Digital Operator Power Lamp Monitor LED displaySTOP/RESET key Func Function key Up key, Down key Key is pressed, the extension function mode can be selected Key Description Explanation of Screen Display Transition of Each Code Monitor modeOutput frequency Digital Operator Initialization List Screen display Monitor mode contents Explanation of Modes Trip cause 10.00 to 100.00 toTrip current Is displayed Setting Function modeFrequency Running Direction Accelera- tion time 1 Decelera Tion time 1 Manual torque boost Run Motor receiving voltage setting Extension function How to Delete Trip History Data , Extension function mode contents Speed control response constant Start frequency adjustmentExtension Function Code Initial value Constant between 99.9 is set in units Frequency upper, lower limiter Frequency command sampling frequency setting Extension Function Code Contents and displayCarrier frequency setting Multispeed setting Initial value Func Setting method 20% 120%Motor poles setting for motor speed monitor 100 150 400 External frequency Setting endInitial value Setting method Same as A26 T1 + t2 + t3 100 Model 055, 075LF Operation will be stoppedInverter requiring an external resistor External Torque monitor 200% of the rated torque Output full-scale valueCurrent monitor Terminal connection example Speed arrival Frequency arrival signal output methodAt the time of constant Only optionally set frequency Swjg Swfw Maximum frequency Base frequency settingFrequency at the start of running PID Auto tuning setting This function is valid when 0 is set for Setting methodMotor data selection Unusable Ro-T- option selection Terminal Setting Input Overtorque signal Note As that of the input terminals Frequency arrival signalSignal during running Setting method is the same Extension Function Code Function name Input Protection Functions Other display Troubleshooting Error Messages and Diagnosis BRD%ED Ground fault on Display on SymptomCheck Countermeasure Appropriate value Trouble shooting HRW-OJ Page Inspection Items Maintenance and InspectionMaintenance and Inspection Precautions Insulation resistance tests, withstand voltage tests Applied voltage Good example Time Megohm-meter 10-2Bad example Time Instruments 10-3Daily Inspection and Periodic Inspection 1/3 Location Daily Periodic 10-4 Daily Inspection and Periodic Inspection 2/3 Daily Inspection and Periodic Inspection 3/3 ReplacementNo blown out LEDs Measurement Method for I/O Voltage, Current, and Power Parts to be measured 10-7 Measurement method for output voltage Common Standarsd Specifications Standard Specifications11-1 11-2 Description Input voltage Class Model Name Type Individual Specification USA version J300 11-3 Connecting the remote operator Functions When Using the Optional Remote Operator12-1 12-2 Switch Model J300 seriesSame as VWA, J100 Monitor mode 12-3 12-4 Term Lllllllll Function mode 12-5 12-6 12-7 12-8 12-9 12-10 12-11 12-12 12-13 12-14 12-15 Other displays For error contents, see12-16 12-17 Forced rewriting Description AlarmValue. Note that when Automatically rewritten Fmax Fch Remote operator, copy unit Dimensions12-18 Copy Unit Function 12-19 Data to be copied by the copy unit Precautions for copying 12-20 Service 13-1Page Autotuning start Setting method Precautions Select 1 Control in the second hierarchy New remote operatorSelect 3 Function in the first hierarchy Select 2 Motor in the third hierarchy Tuning NG Tuning ENDDisplay in the failure state Running method by autotuning data Select Sensorless vector control by Control method Select 1 V/f in the third hierarchy Change the content of 6 Mode fromWhen the data is changed, press Key 0VC to 4SLV in the fourth hierarchy Carrier Energy conservation running Outline of the function 50% Range where the energy conservation is effectiveLarge load Initial display SPD Precautions Setting process Principle Digital operator Select Running mode selec Tion STR Mode 2GOD IPS Powr IPS Trip OFF Time chart for retry mode Alarm Function mode F-34 Commercial power source switchingSet TRM terminal mode Digitaloperator Elbc Ambient Temperature Hours Operation/day Capacitor life year Appendix 3 Capacitor Life Curve RU curve Acceleration Appendix 4 Acceleration/Deceleration Curve ConstantsCurve Deceleration Operation conditions When V/f control is selected Function modeWhen sensor-less vector control is selected Function mode AUX Motor revolution varies when Operation conditions Phenomena Improvements Display, etcQuickly varying load Load varies For example, 7.5 kW, 5.5 kW, and 3.7 kW Select the motor capacity which is the most approxiMate to the total capacity of the motors used AUX K 022.00 kW 005.50 kW Select the most approximate value Appendix 6 Supplementaly Explanation of the Function Mode Function name Second function setting HOP, HRW DOP, DRW Monitor modeHRW DRW 1F-SET 4RESETInitreseton SET Selectrem 2DATA 0NOR Controlvc1AUTO 0NOR 3LINE Acclinel 2TIME 3LINE Decline L4GAIN Decgain 2FRS 1ZST Runfrs ZST 1LIML 1LEVEL2CONST1.0 2LIMH IN-TM3JG IN-TM1RSIN-TM2AT IN-TM4FRS 0EVN 1BAUD2NUMBER1 1RYA 3RUN Appendix 8 PID Function Wiring SketchPID Gain Data Setting Method