What to do about leak current, MCCBn+1 INVn | Toshiba VF-S9 guide

E6580757

Circuit interrupting when two or more inverters are used on the same power line.

(circuit interupting fuse)

MCCB1MCCB2

INV1

MCCB3

INV2

MCCBn+1

1

INVn

Breaking of selected inverter

There is no fuse in the inverter's main circuit. Thus, as the diagram above shows, when more than one inverter is used on the same power line, you must select interrupting characteristics so that only the MCCB2 will trip and the MCCB1 will not trip when a short occurs in the inverter (INV1). When you can- not select the proper characteristics install a circuit interrupting fuse between the MCCB2 and the INV1.

■Disposal

If an inverter is no longer usable, dispose of it as industrial waste.

1.4.3What to do about leak current

Warning

Current may leak through the inverter's input/output wires because of insufficient electrostatic capacity on the motor with bad effects on peripheral equipment. The leak current's value is affected by the carrier frequency and the length of the in- put/output wires. Test and adopt the following remedies against leak current.

(1) Effects of leak current across ground

Leak current may flow not just through the inverter system but also through ground wires to other sys- tems. Leak current will cause earth leakage breakers, leak current relays, ground relays, fire alarms and sensors to operate improperly, and it will cause superimposed noise on the CRT screen or display of incorrect current amounts during current detection with the CT.

A-13

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Toshiba VF-S9 What to do about leak current, Effects of leak current across ground, Circuit interupting fuse, MCCBn+1 INVn

Contents

Tosvert VF-S9 Contents E6580757 Iii Safety precautions Meanings of symbolsSafety precautions Explanation of markings General operation Transportation ‚ Installation Wiring Operations When retry function is selected inverter Maintenance and inspection Disposal Attach warning labels Features II. Introduction Read first Check product purchaseMandatory Contents of the product code Names and functions Outside view Charge lamp Terminal board cover E6580757 Main circuit and control circuit terminal boards 2022PL 2015PM VFS9-2022PM/2037PM VFS9-4007PL ∼ 4037PL VFS9-2055PL/2075PL 4055PL/4075PL How to open the front terminal board cover See 2.3.2 for details on all terminal functions Motors Braking a motor when cutting off power supply Extremely low loads and low inertia loadsOccurrence of instability Loads that generate negative torque Power factor improving capacitors InvertersProtecting inverters from overcurrent Inverter capacity What to do about leak current Effects of leak current across groundCircuit interupting fuse MCCBn+1 INVn Power RemediesFfects of leak current across lines Supply Use the electronic thermal built into the inverter Installation Installation environmentContinuous operation this may result in fire Not examples for resistance to fire or explosion Consult with Toshiba about these measures How to install Installation location Cabinet must be ventilated and cooled Inverter Type Installing more than one unit in a cabinet Connection equipment Control and main power supply WiringPreventing radio noise Standard connections Standard connection diagram 1 sink common CC This diagram shows a standard wiring of the main circuit Standard connection diagram 2 source common P24 VF-S9 Power supply and motor connections Description of terminalsMain circuit terminals Connections with peripheral equipment Control circuit terminals sink logic Main circuit Input Standard default setting 0~10Vdc input Internal imped ~60Hz60Hz setting frequencyPut. Standard default setting output cur 1mA full-scale dc By jumper JP302 switching Full scale DC am Multifunction programmable relay contact = 1, 30Vdc-1A, 250Vac-1A cos φ = At resistance loadOutput Detects the operation of the inverters 30Vdc-1A During protection function operation Input Common Output Logic switching/voltage-current output switching jumper Operations How to operate the VF-S9 WiringMotor Main circuit E6580757 Mccb Motor Adjustment range Simplified Operation of the VF-S9Monitor display selection Is set to How to start and stop How to set the frequency Setting the frequency using the operation panel Example of operating a run from the panelMoves the frequency down Potentiometer E6580757 Setting monitor mode Mode for setting inverter parameters Status monitor mode Mode for monitoring all inverter statusBasic VF-S9 operations VF-S9 has the following three monitor modes How to set parameters Setting monitor mode How to set the basic parameters Press the Enter key to save the changed maximum frequency How to set extended parameters Key and the key to select Search and resetting of changed parameters Example of parameter settingKey to change the dynamic braking selection from How to search and reprogram parameters How to program setup parameters Returning all parameters to standard default setting Command mode selection Set , and and canParameters that cannot be changed while running Key operated LED display Operation Key or the key to change the set value. To return toPressing the Enter key displays Setting acceleration/deceleration time Basic parametersAutomatic acceleration/deceleration Set automatic acceleration/deceleration to or Manually setting acceleration/deceleration time Parameter setting Title Function Adjustment rangeAcceleration time Seconds Deceleration time Seconds Increasing starting torque Automatic torque boost Automatic torque boost and V/F control mode selection Set V/F control mode selection to 0 V/F constantIf auto-tuning error Appears, see 6.13 Auto Setting environmental protection Setting parameters by operating methodAutomatic environment setting Automatic function setting VIA/II UP/DOWN Selection of operation mode Command mode selection Frequency setting mode selectionCommand mode selection Title Function Adjustment range Meter setting and adjustment Preset-speed operationMeter selection Meter adjustment Adjustment scale with meter adjustment parameter ResolutionExample of 4-20mA programmed output for details, see Connect meters as shown below Standard default setting Adjusting the meter in inverter stop stateDefault setting Tion Is set to Setting values Parameter settingSelecting forward and reverse runs operation panel only Forward/reverse run selection Maximum frequency Upper limit and lower limit frequenciesMaximum frequency Upper limit frequency Lower limit frequency Base frequency Base frequencyBase frequency 25 ∼ 400 Hz Selecting control mode Control mode selectionTime Selection Constant torque characteristics general method of use Setting for fans and pumps Setting V/F control selection Automatic torque boost Increasing starting torqueMotor constant must be set This gives steady torque for stable runs Precautions on vector control Energy-savingSorless vector control Somewhat lower Setting the electronic thermal Manual torque boost increasing torque at low speedsTorque boost Title Function Adjustment range Default setting OverloadProtection Stall Motor electronic thermal pro Setting of motor electronic thermal protection level Default setting 100% Press Key to change the parameter to Setting the motor electronic thermal protection level Setting value Overload protection Overload stall Preset-speed operation speeds in 15 steps Inverter over load characteristicsPreset-speed operation frequencies 1~7 Preset-speed operation frequencies 8~15 Preset-speed S3-CCTerminal functions are as follows Terminal S1 =6 SS1 Using other speed commands with preset-speed command Example of 7-step speed operation Low-speed signal Low-speed signal output frequencyLow-speed signal output frequency ∼ Hz Extended parameters Output of designated frequency reach signal Parameter setting of output terminal selectionSpeed reach detection band Output of set frequency speed reach signal Speed reach setting frequency Speed reach detection bandParameter setting of set frequency and detection band Title Function Adjustment range Setting Input signal selection Changing the standby signal functionST standby signal selection Setting the reset signal Terminal function selection Keeping an input terminal function always active onModifying input terminal functions Always-active function selection Setting of contact input terminal function Terminal Title Function Adjustment range Default settingInput terminal selection 3 RST Reset Connection method Contact input Sink logic Example of application ... Three-wire operation Case of three-wire operation Set toSink logic/source logic input Input terminal selection Setting of output terminal function Modifying output terminal functionsExamples of application Output terminal selection Switching motor characteristics via terminal input Setting of switching terminalsBasic parameters Automatic frequency switching Frequency priority selection External switching Fchg enabled Set frequency is cleared automatically after power-offExternal contact UP/DOWN Contact input. See Setting frequency command characteristics 10Vdc voltage input adjustment VIA, VIB 20mAdc current input adjustment Sample sequence diagram 1 Adjustment with continuous signals Adjustment with pulse signals Parameter-setting example Sample sequence diagram 2 Adjustment with pulse signals Frequency adjustment rangeMinimum unit of frequency adjustment Simultaneous input Starting frequency setting Operation frequencyStarting frequency Function Frequency set with the parameter 2 Run/stop control with frequency setting signals DC brakingDC braking Jog run mode Jog run frequency Jog run stopping patternDC braking time 20.0 sec Jog run setting Jump frequency jumping resonant frequencies Jump frequency Jumping width Jump frequency 3 Jumping width Preset-speed operation frequency 8 to ∼ Preset-speed operation frequency 8 toRandom mode PWM carrier frequency Trip-less intensification Auto-restart Restart during coastingAuto-restart control selection Restarting motor during coasting Motor speed search function DC braking during restart Regenerative power ride-through control Regenerative power ride-through controlIf momentary power failure occurs Application Canceling conditions Retry functionRetry selection Dynamic regenerative braking Dynamic braking selection Braking resistor operation rate Connecting an external braking resistor optional Parameter setting Title FunctionSeparate-type optional resistor with thermal fuse Setting the braking resistor operation rate 12.5 Avoiding overvoltage tripping Minimum resistances of connectable braking resistorsOvervoltage limit operation Output voltage adjustment/Supply voltage correction To the base frequency So that no Output voltage unlimited Conducting PI control External connection100.0 Integral gain 100.0 Setting PI control Adjusting the PI control gain levelGain adjustment parameter Types of PI control interfaces Adjusting analog command voltages Setting motor constants Selection 1 Setting by automatic torque boostSet the auto-tuning parameter to See .2 for details of the setting method Rameters Auto-tuning Application of individual settings Perform adjustments according to the actual operation To the actual operation Deceleration time 3600 s Acceleration time 3600 s Acceleration/deceleration patterns Linear acceleration/deceleration Switching to acceleration/deceleration Selection using parameters Setting motor electronic thermal protection Protection functions Setting current stall Inverter trip retentionStall prevention level Inverter trip retention selection External input trip stop mode selection External trip stop via terminalsIs set to Emergency DC braking, also set Emergency DC braking time Output phase failure detection Output phase failure detection mode selectionFailure detection signal generated FL relay deactivated Emergency stopping from the operation panel Input phase failure detection Control mode for small currentInput phase failure detection mode selection Specified time Title Function Adjustment range Disabled Enabled Over-torque trip/alarm level ∼ 250 %Over-torque trip Level flows for more than Detection signal No trip Over-torque detection Pre-alarm signalOutput terminal function 12 OT Over-torque detection No trip Over-torque Undervoltage trip 15.10 4-20mA dc calibrationUndervoltage trip selection Meter bias Prohibition of change of parameter settings Examples of settingProhibition of change of parameter settings Setting methods Resetting method Changing the display unit to A/V/min-1Unit selection Free unit selection Display in percentage terms Display in amperes/volts Changing the display format while power is on Standard monitor mode ⇒ Standard monitor display selectionChanging the status monitor display format Standard monitor display selection Communication function Common serial Using the RS232C/RS485 Setting the communication functionsTransmission specifications Communication function parameters Common serial options Command by communicating independently Example of connection for RS485-communicationNext data Use the terminal board to branch the cable Number, to the host computer Setting the operation frequency Operation panel key settingApplied operation S1 UP S2 Down S3 CLR Preset-speed setting Switching between external contact UP/DOWN VIA inputTo switch to VIA/II setting, use the external PNL/TB S1FCHG Switching between analog setting and preset-speed setting Signal Voltage signalSetting by means of a remote input device Operation is controlled in accordance with Setting Setting the operation mode Terminal board operation Case of three wire operation Set to Enable to run at HD onEration holding S1 terminal set to Operation, inverter stop S2 PNL/TB VIA VIB Operation from an external input device OFF LED Display of trip information Display of trip information Example of call-up of trip information E6580757 How to cope with the CE directive Taking measures to satisfy the CE/UL directiveAbout the EMC directive Measures to satisfy the EMC directive Example of wiring Single-phase 200V class About the low-voltage directive Measures to satisfy the low-voltage directiveInverter satisfies the low-voltage directive Plate. Refer to the .1 for earth cable sizes Selection of wiring materials and devices Peripheral devices Selection of wiring devices Installation of a magnetic contactor Magnetic contactor in the primary circuitMagnetic contactor in the secondary circuit Installation of an overload relay Optional external devices Effect Reactor type Power factor Harmonics Suppression 200V-3.7kW Improvement Other modelOr less Input AC reactor DC reactor Actor effective for external surge suppression Ward/reverse switch Model CBVR-7B1 Parameter writerModel PWU001Z Extension panel UP/DOWN key, Monitor key, and Enter key Model RKP001Z Devices Input AC re Actor DCL Devices External dimensions and connections Foot Mounted Noise filter Devices External dimensions and connections Braking Resistor Devices External dimensions and connections Parameter Writer ExtenSion panel Communica Table of parameters and data User parametersFour automatic functions Other Basic parameters Extended parameters Input/output parameters Frequency parameters VIB, VIA/II 0213 VIB input point 400 Frequency Frequency Down Operation mode parameters Torque boost parameters Acceleration/deceleration time parametersProtection parameters Operation panel parameters Communication parameters Default settings by inverter rating Table of input terminal functions 1/3 Table of input terminal functions 2/3 ST+PNL/TB Table of input terminal functions 3/3 Table of output terminal functions 1/2 Table of output terminal functions 2/2 POL Order of precedence of combined functions Specifications Models and their standard specificationsStandard specifications Specification Outside dimensions and mass Outside dimensions and mass Fig.A Plate Before making a service call Trip information and remedies Trip causes/warnings and remedies Problem Possible causes Remedies Overvoltage during Problem Possible causes Remedies Small-current opera Process of initializa Values Restoring the inverter from a trip If the motor does not run while no trip message is displayed How to determine the causes of other problems How to cope with parameter setting-related problems Inspection and maintenance Regular inspection Periodical inspection Check pointsCheck items Call the local sales agency Replacement of expendable parts Standard replacement cycles of principal parts Making a call for servicingKeeping the inverter in storage Warranty Disposal of the inverter Toshiba Corporation