Mitsubishi Electronics FR-V500 Measurement of main circuit voltages, currents and powers

Page 101

Precautions for maintenance and inspection

6.5.8Inverter replacement

The inverter can be replaced with the control circuit wiring kept connected. Before replacement, remove the screws in the wiring cover of the inverter.

1)Remove the mounting screws in both ends of the control circuit terminal block.

2)With both hands, pull down the terminal block from behind the control circuit terminals.

3)When installing the terminal block to a new inverter, exercise care not to bend the pins of the control circuit ter- minal block connector.

CAUTION

Before starting inverter replacement, switch power off, wait for more than 10 minutes, and then check the voltage with a tester and such to ensure safety.

6.5.9Measurement of main circuit voltages, currents and powers

!Measurement of voltages and currents

Since the voltages and currents on the inverter power supply and output sides include harmonics, measurement data depends on the instruments used and circuits measured.

When instruments for commercial frequency are used for measurement, measure the following circuits with the instruments given on the next page.

3-phase 200V power input

Input voltage	Output voltage
Input current	Output current
	Output current

	Ar	W11
3-phase		Vr
power	As	W12
supply		Vs
		Vs
	At	W13
		Vt

Inverter

R U Au W21 Vu

S V Av

Vv

T W Aw

W22

Vw

PN

V

To motor

: Moving-iron type

: Electrodynamometer type

Instrument types

+	-
	: Moving-coil type

: Rectifier type

Examples of Measuring Points and Instruments

CAUTION

Use an FFT to measure the output voltage accurately.

A tester or general measuring instrument cannot measure accurately.

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Contents Thank you for choosing this Mitsubishi Vector Inverter Biases and gains of speed setting terminals101 102Electric Shock Prevention Wiring Transportation and installationTrial run OperationEmergency stop Maintenance, inspection and parts replacementDisposing of the inverter General instructionsHarmonic Suppression Guideline AbbreviationsProduct check and name of parts Front viewBasic configuration Basic configuration and connection of peripheral devicesBasic configuration and connection of peripheral devices Selection of peripheral devices Select the NFB type according to the power supply capacity200V class 400V classReinstallation Removal and reinstallation of the front coverStructure StructureReinstallation Structure Removal and reinstallation of the operation panelReinstallation using the connection cable Install the inverter under the following conditions Installation of the inverterInstallation of the inverter Connection diagram Connection diagram, PLG cable, PU connectorConnection diagram, PLG cable, PU connector Terminal Symbol Terminal Name Description Connection diagram, PLG cable, PU connector Main circuitSpecification of main circuit terminal Screw size M8 Terminal arrangement of the main circuit terminalScrew size M6 400V class200V class When input power supply is Cables and wiring length400V class When input power supply is Cable gause for the control circuit powerType Length L m Setting the PLGPLG output circuit jumper connector Pr Setting Relationship between the motor and PLG Parameter Name Factory Setting Setting Range RemarksType Terminal Terminal Name Description Symbol Connection diagram, PLG cable, PU connector Control circuitSpecifications of control circuit terminals Control circuit terminal layout Wiring instructionsNot output during inverter reset Changing the control logic When using an external power supply for transistor output For computer link communication Setting the motor Setting the m otorParameter Name Factory Setting Setting Range Dedicated motor SF-V5R 1500r/min seriesWhen using other manufacturers’ motors At-a-glance guide to motor settingMotor Rated Voltage Precautions for use of the vector inverterPrecautions for use of the vector inverter Setting the speed and running the motor Basic operation Speed setting, run, speed meter adjustmentChecks prior to test run Checks prior to test runTurn on the start switch STF or STR Basic operation Speed setting, run, speed meter adjustmentPU jog operation Operation status indication FWD or REV flickersExternal jog operation Display the present operation speed by pressing SET to Changing exampleIt may take some time until the pointer moves To stop the inverterNames and functions of the opera- tion panel Names and functions of the operation panelKey indication Unit indication, operation status indicationUsed to set the running speed in the PU operation mode Speed settingAlarm *1 absent MonitoringOnce, press SET , and restart the setting from the beginning Operation modeAlarm history clear Clears all alarm history Names and functions of the opera- tion panel Help modeAlarm history All clear Parameter clearParameter setting mode Names and functions of the opera- tion panel Copy modeSpeed control operation Setting procedureSpeed control operation Speed controlForward and reverse rotation commands terminals STF, STR Speed control operation Operation command settingSpeed command Torque restrictionSecond torque restriction level Torque restriction levelPreset speed-speed Gain adjustmentTorque restrictions during acceleration and deceleration Pr deceleration torqueTorque control operation When 0 is set in Pr or Pr acceleration/deceleration timeTorque control operation Torque controlFollowing table indicates the operations of the signals O signalsSignal Terminal Name Remarks Operation example Pr =0Torque command right selection Torque control operation Setting procedureTorque command setting Perform secure wiring. Refer to Set the PLG. Refer toSpeed restriction 10E +10V When Pr =Used to give a speed restriction command Position command from PLC Position command from parameter settingPosition control operation Position control operationControl mode switchover timing Control mode switchover timing〈 Example Speed Position, when Pr = 4〉 Assumes that the Pr value is the factory settingEasy gain tuning Easy gain tuningEasy gain tuning execution procedure Start signalAutomatically set parameters by easy gain tuning Easy gain tuning Precautions for easy gain tuningChecking the Pr control system selection value Load inertia estimation restriction conditionsPage Online auto tuning Online auto tuning2 Pr =1 start-time tuning 3 Pr = 2 normal tuning/adaptive magnetic flux observerOutput speed SettingTorque % 10VRead Pr to display the currently set gain speed Setting change 1.5 sValue is 100% Current analog voltage adjustment valueExample When the analog Simple mode parameter list Function list Simple mode parametersFunction list Simple mode parameters You can change the motor sound Setting Carrier FrequencyRefer to page 62 for Pr soft PW M control Pr maximum speed, Pr minimum speedRefer to page 46 for details Refer to page 43 for details Setting Drive System Control Method RemarksPr extended function display selection Pr control system selectionFunction list Extended function parameters Function list Extended function parametersRegenerative Deceleration patternSpeed jump 1A Speed jump 1BIntelligent mode Remote settingAlarm occurrence DA1 terminal functionPWM frequency Selection Speed setting signalApplied motor Parameter write Disable selection Reverse rotation Reset selectionOperation mode Online auto tuning Selection Auto tuning setting144 Speed setting 123 Waiting time settingSwitchover 117 Station numberTimer 157 OL signal outputPower failure Stall prevention 156 Operation selection168 Maker setting parameters. Do not make setting 169171 Actual operation hour Meter clear DI1 terminal functionMulti-speed setting 233 232 Multi-speed setting234 Multi-speed setting 236 Multi-speed settingSwitchover speed Command selectionCommand 357 In-position zone 286 Droop gainCommand pulse 420 Scaling factor Numerator Position commandCommand filter 427 Excessive level error464 Control sudden stop Digital position465 First position feed Amount lower 4 digitsCharacteristic Selection 801 Torque characteristic805 Torque command Value RAM Torque command822 Speed setting filter 818 Easy gain tuning Response level setting 819826 Torque setting filter 832 Speed setting filter840 Torque bias selection Adjustment841 Torque bias 842 Torque biasFault definition 874 OLT level setting890 Maintenance output Setting time 892 Maintenance outputMajor faults Errors AlarmsErrors Alarms OV During Dec OV During AccMotor Overload Inv. OverloadGround Fault Br. Cct. FaultInst. Pwr. Loss Under VoltageOption Fault OH FaultOption slot alarm 1 to Stll Prev STP OL shown during stallCPU Fault Fault 1 to FaultCorrupt Memry PU Leave OutIndication Fault Name FaultOperation Panel P24 Operation Panel P12Excessive position error No encoder signalNo encoder a signal Overspeed occurrenceStall prevention Minor faultFan Failure Operation Panel Err Indication Reset from operation panel Errors Alarms How to recover from PU stop error PSCorrespondences between digital and actual characters Resetting the inverterCorrespondences between digital and actual characters Memo Troubleshooting TroubleshootingMotor generates abnormal noise Vector controlVector control Troubleshooting Motor does not rotateIs the torque Command beenFor speed restriction? ParameterF control Troubleshooting Motor generates heat abnormally Being made? Troubleshooting Motor huntsSpeed control Troubleshooting Machine operates unstably Does the inverters speed command match the motor speed? Troubleshooting Speed command does not match motor speedHave you set the motor type? Is the PLG setting correct? Troubleshooting Motor rotates but speed does not change Is the wiring length short? Troubleshooting Torque control is not exercised normallyTorque control Pr , Pr Is an externalReduce noise Is the torque command unvaried?Frequency low? Filter PrPrecautions for maintenance and inspection Precautions for maintenance and inspectionInsulation resistance test using megger Check items Do not conduct a pressure test. Deterioration may occur Precautions for maintenance and inspection Pressure test Daily and periodic inspection Part Name Standard Replacement Interval Description Replacement of partsInterval Area Inspection DescriptionRelays Cooling fanSmoothing capacitors Examples of Measuring Points and Instruments Measurement of main circuit voltages, currents and powers100% Pf1 = Measuring Points and Instruments100% Pf2 =Model specifications Model specificationsThree-phase, 380V to 480V 50Hz/60Hz Three-phase, 380 to 480V 50Hz/60Hz10.0 12.8 19.0 24.6 30.4 35.8 46.3 59.5 68.5 91.0 10.0 14.5 18.5 27.5 35.5 51.8 132Common specifications Common specificationsOutline dimension drawings Outline dimension drawingsInverter outline dimension drawings FR-V520-1.5K‚ 2.2K FR-V540-1.5K‚ 2.2K250 FR-V520-11K‚ 15K FR-V540-7.5K‚ 11K, 15K, 18.5KFR-V520-18.5K Inverter Type FR-V520-22K, 30K‚ 37K !FR-V540-22K, 30K‚ 37KSF-V5RH 2K ‚ 3K SF-V5RH 1KSF-V5RH 5K ‚ 7K 110 SF-V5RH 30K ‚ 37K ‚ 45K ‚ 55KPrint Date Manual Number Revision For Maximum Safety