Megger test | Hitachi X200 Series specs

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Megger test

Troubleshooting and Maintenance

The megger is a piece of test equipment that uses a high voltage to determine if an insulation degradation has occurred. For inverters, it is important that the power terminals be isolated from the Earth GND terminal via the proper amount of insulation.

The circuit diagram below shows the inverter wiring for performing the megger test. Just follow the steps to perform the test:

1.Remove power from the inverter and wait at least 5 minutes before proceeding.

2.Open the front housing panel to access the power wiring.

3.Remove all wires to terminals [R, S, T, PD/+1, PD/+, N/–, U, V, and W]. Most importantly, the input power and motor wires will be disconnected from the inverter.

4.Use a bare wire and short terminals [R, S, T, PD/+1, PD/+, N/–, U, V, and W] together as shown in the diagram.

5.Connect the megger to the inverter Earth GND and to the shorted power terminals as shown. Then perform the megger test at 500 VDC and verify 5MΩ or greater resistance.

X200

6.After completing the test, disconnect the megger from the inverter.

7.Reconnect the original wires to terminals [R, S, T, PD/+1, PD/+, N/–, U, V, and W].

CAUTION: Do not connect the megger to any control circuit terminals such as intelligent I/O, analog terminals, etc. Doing so could cause damage to the inverter.

CAUTION: Never test the withstand voltage (HIPOT) on the inverter. The inverter has a surge protector between the main circuit terminals above and the chassis ground.

CAUTION: Power terminal assignment is different compared to old models such as L100, L200 series, etc,. Pay attention when wiring the power cable.

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Hitachi X200 Series instruction manual Megger test

Contents

After read this manual Keep it handy for future reference Hazardous High Voltage Safety Messages General Precautions Read These First Iii Index to Warnings and Cautions in This Manual Page Wiring Cautions for Electrical Practice Vii Powerup Test Caution Messages Viii Page General Warnings and Cautions Inverter Remote Xii Xiii Terminal Tightening Torque and Wire Size Wire ConnectorsXiv Motor Overload Protection Circuit Breaker and Fuse Sizes Table of Contents Xvii Xviii RevisionsRevision History Table Contact Information Xix Getting Started Introduction Main Features Operator Interface Options 040 Inverter Specification Label Model-specific tables for 200V and 400V class inverters X200 Inverter Specifications Derating Curve X200 Inverter Specifications, … 004HFEF 007HFEF 015HFEF 022HFEF 030HFEF 040HFEF −10 General Specifications −11 Signal Ratings −12 What is an InverterIntroduction to Variable-Frequency Drives Purpose of Motor Speed Control for Industry Inverter Input and Three-phase Power −13Torque and Constant Volts/Hertz Operation Inverter Output to the Motor −14 −15 Intelligent Functions and ParametersBraking Velocity Profiles −16 −17 Frequently Asked Questions −18 −19 This Chapter… Orientation to Inverter Features Inverter Mounting Installation Orientation to Inverter Features Main Physical FeaturesUnpacking and Inspection Front Housing Cover Logic Connector Introduction DIP Switch Introduction Power Wiring Access First, ensure no power Inverter Basic System Description Step Activity Step-by-Step Basic Installation Choosing a Mounting Location Keep Debris Out of Inverter Vents Ensure Adequate Ventilation Check Inverter Dimensions X200-005SFEF,007SFEF, -007NFU X200-011SFEF~022SFEF, -015NFU~022NFU, -037LFU X200-004HFEF, -004HFU X200-007HFEF, -007HFU X200-015HFEF~040HFEF, -015HFU~040HFU This page is left intentionally blank… Prepare for Wiring Signal Lines Determining Wire and Fuse SizesApplicable Inverter Model Terminal Dimensions and Torque Specs Wire the Inverter Input to a Supply−20 −21 −22 Wire the Inverter Output to Motor Logic Control Wiring−23 Goals for the Powerup Test Powerup Test−24 Uncover the Inverter Vents Pre-test and Operational Precautions Powering the Inverter−25 Using the Front Panel Keypad Key and Indicator Legend−26 Keys, Modes, and Parameters −27 Keypad Navigation Map −28 Selecting Functions and Editing Parameters −29 −30 −31 −32 −33 −34 Monitoring Parameters with the DisplayRunning the Motor −35 Powerup Test Observations and Summary Configuring 3 Drive Parameters Introduction of Inverter Programming Choosing a Programming Device Using the Keypad Devices Monitor Mode Programming Mode Run Mode Edit Operational ModesControl Algorithms Stop Group Monitoring FunctionsIN-TM Lhlhl OUT-TM Trip Event and History Monitoring Local Monitoring During Network Operation ACC Group Main Profile ParametersDEC DIG-RUN FWD COM Group Standard Functions2F-COM OPE-Mode Code Run Command Source A001 Frequency Source Setting Method Refer to page…A002 Run Command Setting Method Refer to page… Base Basic Parameter Settings2F-BASE MAX Analog Input Settings EXE EXSEX%S EX%E FRS Multi-speed and Jog Frequency Setting Manual Torque Boost The Constant Torque Control Algorithms 2CTRL TRQ Ctrl TRQ Normal DC braking performance⎯ The DC DC Braking DB Settings DCB F OFFDCB DCB T Lim H 0000.0Hz Frequency-related Functions2Lim H 0000.0Hz Lim L 0000.0Hz Jump F2 Jump F1Jump F3 Jump W1 PID Control Automatic Voltage Regulation AVR Function AVR ModeAVR AC 00230V Energy Savings Mode / Optional Accel/Decel RUN Mode NORECO Adj 0050.0% 2ACC2 Second Acceleration and Deceleration Functions2DEC2 ACC CHG 2ACCCHfr 0000.0Hz ACC CHfr 0000.0HzDEC CHfr 0000.0Hz 2DECCHfr 0000.0Hz Accel/Decel ACC LineDEC Line Additional Analog Input Settings POT Calc Slct1Calc Slct2 Calc Smbl ADD DIR Plus ST-PNT Potentiometer Settings Automatic Restart Mode Group Fine Tuning Functions IPS Trip OFF IPS Powr ALMIPS Retry Cutoff THM LVL Electronic Thermal Overload Alarm Setting2ETHM LVL THM Char CRT Frequency Pull-in Restart Overload Restriction Mode Input Software Lock Mode−36 Lock LockMD1 −37 −38 Non Stop Operation at Power OFF −39 −40 Miscellaneous Settings TRP −41 FRS −42 −43 RUN FRS ZSTStop DEC Panel −44D001 FAN-CTRL OFF −45 B130, B131 Over-voltage LAD Stop EnableOvladstop OFF Ladst LVL −46 DC Bus AVR for deceleration Settings −47 Miscellaneous Settings ~continuation~ −48 SUP ModeCr-DEC RDY-FUNC OFF Input Terminal Configuration −49Group Intelligent Terminal Functions Intelligent Input Terminal Overview −50 −51 Input Function Summary Table OptionFunction Name Description Anlg −52 RDY −53 −54 Output Terminal ConfigurationFA1 OUT-TM RY Output Function Summary Table Option −55 −56 −57 LOC Mode CRTLow Load Detection Parameters LOC LVL −58 Output Function Adjustment Parameters −59 −60 Network Communications Settings −61 Analog Signal Calibration SettingsADJ OI-ADJ Miscellaneous Functions −62DBG Slct UP/DWN NO-STR Output Logic and Timing −63LogicOut1 LogicOut2 Dlay −64Hold Dlay RY Group Motor Constants Functions −65 This Chapter… Operations Monitoring Operations and Monitoring Operations and Monitoring Connecting to PLCs and Other Devices Optional Example Wiring Diagram AL2 AL1 AL0 Control Logic Signal Specifications Intelligent Terminal Listing Input Function Summary Table Symbol Code Function NameIntelligent Inputs Intelligent Outputs Using Intelligent Input Terminals Sinking Inputs, Internal Supply Sinking Inputs, External Supply Terminal Function Name State Description Forward Run/Stop and Reverse Run/Stop CommandsValid for inputs C001~C005 A002 = Multi-Speed Select Function Name State DescriptionValid for inputs −13 Option Terminal Function Name State Description Jogging Command External Signal for DC Braking Option Code Terminal Symbol Function Name State DescriptionA053, A054 Set Second Motor, Special Set Option Terminal Function Name StateNone Two Stage Acceleration and Deceleration Option Terminal Function NameA092, A093, A094=00 Free-run Stop Terminal Function NameB003, B088, C011 to C015 External Trip Unattended Start Protection B031 excluded from lock Software Lock A001 = Analog Input Current/Voltage Select Terminal Function Name State Description Code Reset Inverter Valid for inputs C005 only Thermistor Thermal Protection Three-wire Interface Operation PID ON/OFF and PID Clear Remote Control Up and Down Functions Remote Control Data Clears the Up/Down frequency memory Force Operation from Digital Operator A001, A145, A146 Add Frequency Enable Inverter Ready Force Terminal Mode Safe Stop Required settings Sinking Outputs, Open Collector Using Intelligent Output Terminals Relay shown with inverter power ON, Run Signal OFF Output Signals Output Signal ON/OFF Delay Function Option Terminal Function Name State Description Code Run Signal Frequency Arrival Signals FA2 FM terminal see Analog Output Operation Overload Advance Notice Signal Output Deviation for PID Control Or the relay outputs Alarm Signal Power Run Mode AL0-AL1 AL0-AL2 Analog Input Disconnect Detect PID Second Stage Output Terminal FBV configuration table is on the following Transitions to OFF when the PID Feedback Watchdog time-out period with C077 Network Detection Signal Integrated ModBus Logic Output Function Logical 0 result Set P044=00.00 sec Network Detection Signal FieldBus Option C038, C039 Low Load Detection Signal Analog Input Operation Other Analog Input-related topics Analog Output Operation AM output offset adjustment AM output gain adjustment GND PID Loop Operation Other PID-related topics PID Loop Configuration Configuring the Inverter for Multiple Motors Inverter Configuration for Two Motor TypesSimultaneous Connections Manual torque boost frequency adjustment Inverter System Accessories USA AC Reactors, Input Side Component DescriptionsAC Reactors, Output Side Example calculation Zero-phase Reactor RF Noise Filter EMI FilterRF Noise Filter Capacitive Dynamic Braking DC Link ChokeDynamic Braking Usage Troubleshooting Maintenance Safety Messages TroubleshootingGeneral Precautions and Notes Inspection Items Symptom/condition Probable Cause Solution Troubleshooting Tips Reduces output as needed Error Codes Fault Detection and ClearingError Name Causes Code Monitoring Trip Events, History, & Conditions Error Name Causes Trip Conditions Trip History and Inverter Status Action Display Func./Parameter Restoring Factory Default Settings Monthly and Yearly Inspection Chart Maintenance and Inspection X200 Megger test Capacitor Life Curves Spare parts Pf1 = General Inverter Electrical Measurements −13 Inverter Output Voltage Measurement Techniques Igbt Test Method Warranty Terms Warranty This Appendix… Glossary Bibliography Glossary Temperature EMI Insulated Gate Bipolar TransistorIGBT a semiconductor Free-run Stop NEC PWM Squirrel Cage Torque Bibliography ModBus Network Communications Specifications Connecting the Inverter to ModBus SP SN Func Name Settings03…ModBus network input 03… ModBus network input Message Configuration Query Transmission procedureNetwork Protocol Reference Slave address Data Error checkFunction code Header and trailer silent interval Response when an error occurs Message Configuration ResponseTransmission time required Normal response No response occurs Read Coil Status 01h Explanation of function codesData Field Name Read Holding Register 03h X200 D081Frequency Write in Coil 05h 10-11Data Coil Status Write in Holding Register 06h Loopback Test 08h Write in Coils 0Fh Write in Holding Registers 10h Function Code Exception ResponseException Code Code Description Submitting an Enter Command Store New Register Data Enter command ModBus Data Listing ModBus Coil ListList of Coil Numbers Name Description …OFF Res ModBus Holding Registers Output frequency Real-time display of output Description Network Data Code Reg List of Holding Registers Func Acceleration 1 time Standard default acceleration Frequency source Five options select codes 4000 A024 Multi-speed 4 setting Code Reg List of Holding Registers Func Name Description PID enable Enables PID function Acceleration 2 time Duration of 2nd segment OI-L input active Ending point offset for Selection of automatic Select inverter restart method Overload restriction Select the operation mode during Deceleration time Range is 0.01 to Restart mode after Selects how the inverter resumes 10D7h B133 DC bus AVR Two option codes See Input Terminal Configuration Communication Settings on See Output Logic and Timing on Motor capacity …0.20kW Drive Parameter Setting Tables Group Parameters Default Setting Parameter Settings for Keypad EntryMain Profile Parameters Name Standard Functions Func NameCode Name =10 Appendix Fine Tuning Functions Group ParametersFunc Name =10 Group Parameters Default Setting Intelligent Terminal Functions Expansion Card Functions Motor Constants Functions CE-EMC CE-EMC Installation Guidelines Integrated EMC Filter Installation for X200 series example of Sfef models Hitachi EMC Recommendations Index EMI A-3 Index−2 LEDs 2-26,2-27,2-39,3-3 Line reactor A-5 Index−3 Index−4 Non stop operation at power OFF 3-38 AC reactor Safe stop 2-5 Index−5 Index−6