Regenerative power ride-through control | Toshiba VF-S9 guide

E6580757

Application!!

• A waiting time of 200 to 1,000msec is preset to allow the residual voltage in the motor to decrease to a certain level during restart. For this reason, the start-up takes more time than usual.

• Use this function when operating a system with one motor connected to one inverter. This function may not operate properly in a system configuration with multiple motors connected to one inverter. Application to a crane or hoist

The crane or hoist may have its load moved downward during the above waiting time from input of the operation starting command to the restart of the motor. To apply the inverter to such machines, therefore, set the auto-restart control mode selection parameter to "0" (Disabled), and avoid using the retry function. If retry function is enabled the load could move downward causing damage and or injury.

6.12.2 Regenerative power ride-through control

: Regenerative power ride-through control

• Function

	Regenerative power ride-through control continues the operation of the motor by utilizing motor re-
								6
	generative energy in the event of momentary power failure.							6
	generative energy in the event of momentary power failure.
	[Parameter setting]
	[Parameter setting]
	Title		Function		Adjustment range	Default setting

Regenerative power ride-through control

0: Disabled, 1: Enabled

0

Note: Even when this parameter is set, the particular load conditions may cause the motor to coast. In this case, use the auto-restart function along with this parameter function.

[When power is interrupted]

Input voltage

Motor speed

★The time for which the operation of the motor can be continued depends on the machine inertia and load conditions. Before using this function, therefore, perform verification tests.

★Use with the retry function allows the motor to be restarted automatically without being brought to an abnormal stop.

★The operation continuing time is about

Approx. 100ms	100ms when regenerative power ride-
	through control is enabled (		= 1).

[If momentary power failure occurs]

Input voltage

Motor speed

100ms (maximum)

F-25

Image 109

Toshiba VF-S9 manual Regenerative power ride-through control, Application, If momentary power failure occurs

Contents

Tosvert VF-S9 Contents E6580757 Iii Meanings of symbols Safety precautionsSafety precautions Explanation of markings General operation Wiring Transportation ‚ Installation Operations Maintenance and inspection When retry function is selected inverter Attach warning labels Disposal II. Introduction Features Check product purchase Read firstMandatory Contents of the product code Outside view Names and functions Terminal board cover Charge lamp E6580757 2022PL Main circuit and control circuit terminal boards VFS9-2022PM/2037PM VFS9-4007PL ∼ 4037PL 2015PM VFS9-2055PL/2075PL 4055PL/4075PL See 2.3.2 for details on all terminal functions How to open the front terminal board cover Motors Extremely low loads and low inertia loads Braking a motor when cutting off power supplyOccurrence of instability Loads that generate negative torque Inverters Power factor improving capacitorsProtecting inverters from overcurrent Inverter capacity Effects of leak current across ground What to do about leak currentCircuit interupting fuse MCCBn+1 INVn Remedies PowerFfects of leak current across lines Supply Use the electronic thermal built into the inverter Installation environment InstallationContinuous operation this may result in fire Not examples for resistance to fire or explosion Consult with Toshiba about these measures Installation location How to install Inverter Type Cabinet must be ventilated and cooled Installing more than one unit in a cabinet Connection equipment Wiring Control and main power supplyPreventing radio noise Standard connections This diagram shows a standard wiring of the main circuit Standard connection diagram 1 sink common CC VF-S9 Standard connection diagram 2 source common P24 Description of terminals Power supply and motor connectionsMain circuit terminals Connections with peripheral equipment Main circuit Control circuit terminals sink logic ~60Hz60Hz setting frequency Input Standard default setting 0~10Vdc input Internal impedPut. Standard default setting output cur 1mA full-scale dc By jumper JP302 switching Full scale DC am = 1, 30Vdc-1A, 250Vac-1A cos φ = At resistance load Multifunction programmable relay contactOutput Detects the operation of the inverters 30Vdc-1A During protection function operation Input Common Output Logic switching/voltage-current output switching jumper Operations Wiring How to operate the VF-S9Motor Main circuit E6580757 Mccb Motor Simplified Operation of the VF-S9 Adjustment rangeMonitor display selection Is set to How to set the frequency How to start and stop Example of operating a run from the panel Setting the frequency using the operation panelMoves the frequency down Potentiometer E6580757 Status monitor mode Mode for monitoring all inverter status Setting monitor mode Mode for setting inverter parametersBasic VF-S9 operations VF-S9 has the following three monitor modes Setting monitor mode How to set parameters Press the Enter key to save the changed maximum frequency How to set the basic parameters Key and the key to select How to set extended parameters Example of parameter setting Search and resetting of changed parametersKey to change the dynamic braking selection from How to search and reprogram parameters How to program setup parameters Command mode selection Set , and and can Returning all parameters to standard default settingParameters that cannot be changed while running Key or the key to change the set value. To return to Key operated LED display OperationPressing the Enter key displays Basic parameters Setting acceleration/deceleration timeAutomatic acceleration/deceleration Set automatic acceleration/deceleration to or Parameter setting Title Function Adjustment range Manually setting acceleration/deceleration timeAcceleration time Seconds Deceleration time Seconds Automatic torque boost Increasing starting torque Set V/F control mode selection to 0 V/F constant Automatic torque boost and V/F control mode selectionIf auto-tuning error Appears, see 6.13 Auto Setting parameters by operating method Setting environmental protectionAutomatic environment setting Automatic function setting VIA/II UP/DOWN Command mode selection Frequency setting mode selection Selection of operation modeCommand mode selection Title Function Adjustment range Preset-speed operation Meter setting and adjustmentMeter selection Meter adjustment Resolution Adjustment scale with meter adjustment parameterExample of 4-20mA programmed output for details, see Connect meters as shown below Adjusting the meter in inverter stop state Standard default settingDefault setting Tion Is set to Parameter setting Setting valuesSelecting forward and reverse runs operation panel only Forward/reverse run selection Upper limit and lower limit frequencies Maximum frequencyMaximum frequency Upper limit frequency Lower limit frequency Base frequency Base frequencyBase frequency 25 ∼ 400 Hz Control mode selection Selecting control modeTime Selection Setting for fans and pumps Constant torque characteristics general method of use Increasing starting torque Setting V/F control selection Automatic torque boostMotor constant must be set This gives steady torque for stable runs Energy-saving Precautions on vector controlSorless vector control Somewhat lower Manual torque boost increasing torque at low speeds Setting the electronic thermalTorque boost Overload Title Function Adjustment range Default settingProtection Stall Motor electronic thermal pro Default setting 100% Press Key to change the parameter to Setting of motor electronic thermal protection level Setting value Overload protection Overload stall Setting the motor electronic thermal protection level Inverter over load characteristics Preset-speed operation speeds in 15 stepsPreset-speed operation frequencies 1~7 Preset-speed operation frequencies 8~15 S3-CC Preset-speedTerminal functions are as follows Terminal S1 =6 SS1 Example of 7-step speed operation Using other speed commands with preset-speed command Low-speed signal output frequency Low-speed signalLow-speed signal output frequency ∼ Hz Extended parameters Parameter setting of output terminal selection Output of designated frequency reach signalSpeed reach detection band Speed reach setting frequency Speed reach detection band Output of set frequency speed reach signalParameter setting of set frequency and detection band Title Function Adjustment range Setting Changing the standby signal function Input signal selectionST standby signal selection Setting the reset signal Keeping an input terminal function always active on Terminal function selectionModifying input terminal functions Always-active function selection Terminal Title Function Adjustment range Default setting Setting of contact input terminal functionInput terminal selection 3 RST Reset Connection method Contact input Sink logic Case of three-wire operation Set to Example of application ... Three-wire operationSink logic/source logic input Input terminal selection Modifying output terminal functions Setting of output terminal functionExamples of application Output terminal selection Setting of switching terminals Switching motor characteristics via terminal inputBasic parameters Frequency priority selection Automatic frequency switching Set frequency is cleared automatically after power-off External switching Fchg enabledExternal contact UP/DOWN Contact input. See Setting frequency command characteristics 20mAdc current input adjustment 10Vdc voltage input adjustment VIA, VIB Adjustment with pulse signals Parameter-setting example Sample sequence diagram 1 Adjustment with continuous signals Frequency adjustment range Sample sequence diagram 2 Adjustment with pulse signalsMinimum unit of frequency adjustment Simultaneous input Operation frequency Starting frequency settingStarting frequency Function Frequency set with the parameter DC braking 2 Run/stop control with frequency setting signalsDC braking Jog run frequency Jog run stopping pattern Jog run modeDC braking time 20.0 sec Jog run setting Jump frequency Jumping width Jump frequency 3 Jumping width Jump frequency jumping resonant frequencies ∼ Preset-speed operation frequency 8 to Preset-speed operation frequency 8 toRandom mode PWM carrier frequency Auto-restart Restart during coasting Trip-less intensificationAuto-restart control selection DC braking during restart Restarting motor during coasting Motor speed search function Regenerative power ride-through control Regenerative power ride-through controlIf momentary power failure occurs Application Retry function Canceling conditionsRetry selection Dynamic braking selection Braking resistor operation rate Dynamic regenerative braking Parameter setting Title Function Connecting an external braking resistor optionalSeparate-type optional resistor with thermal fuse Setting the braking resistor operation rate Minimum resistances of connectable braking resistors 12.5 Avoiding overvoltage trippingOvervoltage limit operation To the base frequency So that no Output voltage adjustment/Supply voltage correction Output voltage unlimited External connection Conducting PI control100.0 Integral gain 100.0 Adjusting the PI control gain level Setting PI controlGain adjustment parameter Types of PI control interfaces Adjusting analog command voltages Selection 1 Setting by automatic torque boost Setting motor constantsSet the auto-tuning parameter to See .2 for details of the setting method Rameters Auto-tuning Application of individual settings To the actual operation Perform adjustments according to the actual operation Acceleration time 3600 s Deceleration time 3600 s Linear acceleration/deceleration Acceleration/deceleration patterns Selection using parameters Switching to acceleration/deceleration Protection functions Setting motor electronic thermal protection Inverter trip retention Setting current stallStall prevention level Inverter trip retention selection External trip stop via terminals External input trip stop mode selectionIs set to Emergency DC braking, also set Emergency DC braking time Output phase failure detection mode selection Output phase failure detectionFailure detection signal generated FL relay deactivated Emergency stopping from the operation panel Control mode for small current Input phase failure detectionInput phase failure detection mode selection Disabled Enabled Over-torque trip/alarm level ∼ 250 % Specified time Title Function Adjustment rangeOver-torque trip Level flows for more than No trip Over-torque detection Pre-alarm signal Detection signalOutput terminal function 12 OT Over-torque detection No trip Over-torque 15.10 4-20mA dc calibration Undervoltage tripUndervoltage trip selection Meter bias Examples of setting Prohibition of change of parameter settingsProhibition of change of parameter settings Setting methods Changing the display unit to A/V/min-1 Resetting methodUnit selection Free unit selection Display in percentage terms Display in amperes/volts Standard monitor mode ⇒ Standard monitor display selection Changing the display format while power is onChanging the status monitor display format Standard monitor display selection Communication function Common serial Setting the communication functions Using the RS232C/RS485Transmission specifications Communication function parameters Common serial options Example of connection for RS485-communication Command by communicating independentlyNext data Use the terminal board to branch the cable Number, to the host computer Operation panel key setting Setting the operation frequencyApplied operation S1 UP S2 Down S3 CLR Switching between external contact UP/DOWN VIA input Preset-speed settingTo switch to VIA/II setting, use the external PNL/TB S1FCHG Signal Voltage signal Switching between analog setting and preset-speed settingSetting by means of a remote input device Operation is controlled in accordance with Setting Terminal board operation Setting the operation mode Enable to run at HD on Case of three wire operation Set toEration holding S1 terminal set to Operation, inverter stop Operation from an external input device S2 PNL/TB VIA VIB OFF LED Display of trip information Display of trip information Example of call-up of trip information E6580757 Taking measures to satisfy the CE/UL directive How to cope with the CE directiveAbout the EMC directive Measures to satisfy the EMC directive Single-phase 200V class Example of wiring Measures to satisfy the low-voltage directive About the low-voltage directiveInverter satisfies the low-voltage directive Plate. Refer to the .1 for earth cable sizes Peripheral devices Selection of wiring materials and devices Selection of wiring devices Magnetic contactor in the primary circuit Installation of a magnetic contactorMagnetic contactor in the secondary circuit Optional external devices Installation of an overload relay 200V-3.7kW Improvement Other model Effect Reactor type Power factor Harmonics SuppressionOr less Input AC reactor DC reactor Actor effective for external surge suppression Parameter writer Ward/reverse switch Model CBVR-7B1Model PWU001Z Extension panel UP/DOWN key, Monitor key, and Enter key Model RKP001Z Input AC re Actor Devices DCL Noise filter Devices External dimensions and connections Foot Mounted Devices External dimensions and connections Braking Resistor Writer Exten Devices External dimensions and connections ParameterSion panel Communica User parameters Table of parameters and dataFour automatic functions Other Basic parameters Input/output parameters Extended parameters VIB, VIA/II Frequency parameters 0213 VIB input point 400 Frequency Frequency Down Operation mode parameters Acceleration/deceleration time parameters Torque boost parametersProtection parameters Communication parameters Operation panel parameters Table of input terminal functions 1/3 Default settings by inverter rating ST+PNL/TB Table of input terminal functions 2/3 Table of output terminal functions 1/2 Table of input terminal functions 3/3 POL Table of output terminal functions 2/2 Order of precedence of combined functions Models and their standard specifications SpecificationsStandard specifications Specification Outside dimensions and mass Outside dimensions and mass Plate Fig.A Trip causes/warnings and remedies Before making a service call Trip information 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 Regular inspection Inspection and maintenance Check points Periodical inspectionCheck items Call the local sales agency Replacement of expendable parts Making a call for servicing Standard replacement cycles of principal partsKeeping the inverter in storage Warranty Disposal of the inverter Toshiba Corporation