Mitsubishi Electronics FR-V500 Precautions for maintenance and inspection, Check items

Page 97

Precautions for maintenance and inspection

6.5 Precautions for maintenance and inspection

6.5.1Precautions for maintenance and inspection

The inverter is a static unit mainly consisting of semiconductor devices. Daily inspection must be performed to prevent any fault from occurring due to the adverse effects of the operating environment, such as temperature, humidity, dust, dirt and vibration, changes in the parts with time, service life, and other factors.

!Precautions for maintenance and inspection

For some short time after the power is switched off, a high voltage remains in the smoothing capacitor. When accessing the inverter for inspection, switch power off, wait for more than 10 minutes, and then make sure that the voltage across the main circuit terminals P-N of the inverter is not more than 30VDC using a tester, etc.

6.5.2Check items

(1) Daily inspection

Basically, check for the following faults during operation.

1)Motor operation fault

2)Improper installation environment

3)Cooling system fault

4)Unusual vibration and noise

5)Unusual overheat and discoloration

During operation, check the inverter input voltages using a tester.

(2) Cleaning

Always run the inverter in a clean status.

When cleaning the inverter, gently wipe dirty areas with a soft cloth immersed in neutral detergent or ethanol.

CAUTION

Do not use solvent, such as acetone, benzene, toluene and alcohol, as they will cause the inverter sur- face paint to peel off.

6.5.3Periodic inspection

Check the areas inaccessible during operation and requiring periodic inspection. For periodic inspection, consult us.

1)

Cooling system fault

: Clean the air filter, etc.

2)

Tightening check and retightening

: The screws and bolts may become loose due to vibration, temperature

changes, etc. Check and tighten them.

Tighten them according to the specified tightening torque. (Refer to page 11.)

3)Check the conductors and insulating materials for corrosion and damage.

4)Measure insulation resistance.

5)Check and change the cooling fan and relay.

6.5.4Insulation resistance test using megger

1)Before performing the insulation resistance test on the external circuit, disconnect the cables from all terminals of the inverter so that the test voltage is not applied to the inverter.

2) For the continuity test of the control circuit, use a tester (high resistance range) and do not use the m egger or buzzer.

3)For the inverter, conduct the insulation resistance test on the main circuit only as shown below and do not per- form the test on the control circuit. (Use a 500VDC megger.)

Power supply

500VDC megger

R

 

 

 

 

U

Motor

 

Inverter

IM

S

 

V

 

 

 

 

T

 

 

 

 

W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Earth (ground) terminal

93

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Page 96 Page 98
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 and connection of peripheral devices Basic configuration and connection of peripheral devicesBasic configuration 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 using the connection cable Structure Removal and reinstallation of the operation panelReinstallation Installation of the inverter Installation of the inverterInstall the inverter under the following conditions Connection diagram, PLG cable, PU connector Connection diagram, PLG cable, PU connectorConnection diagram Specification of main circuit terminal Connection diagram, PLG cable, PU connector Main circuitTerminal Symbol Terminal Name Description 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 powerPLG output circuit jumper connector Setting the PLGType Length L m Pr Setting Relationship between the motor and PLG Parameter Name Factory Setting Setting Range RemarksSpecifications of control circuit terminals Connection diagram, PLG cable, PU connector Control circuitType Terminal Terminal Name Description Symbol Not output during inverter reset Wiring instructionsControl circuit terminal layout 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 settingPrecautions for use of the vector inverter Precautions for use of the vector inverterMotor Rated Voltage 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 Names and functions of the opera- tion panel Help modeAlarm history clear Clears all alarm 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 Used to give a speed restriction command When Pr =10E +10V 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 sExample When the analog Current analog voltage adjustment valueValue is 100% Function list Simple mode parameters Function list Simple mode parametersSimple mode parameter list 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 functionApplied motor Speed setting signalPWM frequency Selection 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 outputErrors Alarms Errors AlarmsMajor faults 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 occurrenceFan Failure Minor faultStall prevention 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 Speed control Troubleshooting Motor huntsBeing made? Troubleshooting Machine operates unstably Have you set the motor type? Is the PLG setting correct? Troubleshooting Speed command does not match motor speedDoes the inverters speed command match the motor speed? 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 itemsDaily and periodic inspection Precautions for maintenance and inspection Pressure testDo not conduct a pressure test. Deterioration may occur Part Name Standard Replacement Interval Description Replacement of partsInterval Area Inspection DescriptionSmoothing capacitors Cooling fanRelays 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‚ 2.2KFR-V520-18.5K FR-V520-11K‚ 15K FR-V540-7.5K‚ 11K, 15K, 18.5K250 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
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