Dynamic regenerative braking | Toshiba VF-S9 instruction

E6580757

creases below a predetermined level.

★In the event of overheating-caused tripping ( ), re-tripping may result unless the internal temperature decreases below a predetermined level, since the internal temperature detection function of the inverter works.

★Even when trip retention selection parameter is set to " ", the retry function is enabled by setting.

★During retrying, the blinking display will alternate between " " and the monitor display specified by

status monitor display mode selection parameter .

6.12.4 Dynamic (regenerative) braking

: Dynamic braking selection

: Braking resistor operation rate

• Function

	The VFS9 does not contain a braking resistor. Connect an external braking resistor in the following
	cases to enable dynamic braking:
	cases to enable dynamic braking:		6
	1)	when decelerating the motor abruptly or if overvoltage tripping (OP) occurs during deceleration	6
	1)
		stop
		stop
	2)	when a continuous regenerative status occurs during downward movement of a lift or the wind-
		ing-out operation of a tension control machine
	3)	when the load fluctuates and a continuous regenerative status results even during constant
		speed operation of a machine such as a press

[Parameter setting]

Title	Function	Adjustment range	Default setting

		0: Dynamic braking disabled
		1: Dynamic braking enabled, overload
	Dynamic braking selection	protection disabled	0
		2: Dynamic braking enabled, overload
		protection enabled
	Braking resistor operation rate	1 ∼ 100 (% ED)	3

F-27

Image 111

Toshiba VF-S9 manual Dynamic regenerative braking, Dynamic braking selection Braking resistor operation rate

Contents

Tosvert VF-S9 Contents E6580757 Iii Explanation of markings Safety precautionsMeanings of symbols Safety precautions General operation Wiring Transportation ‚ Installation Operations Maintenance and inspection When retry function is selected inverter Attach warning labels Disposal II. Introduction Features Read first Check product purchaseMandatory 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 Loads that generate negative torque Braking a motor when cutting off power supplyExtremely low loads and low inertia loads Occurrence of instability Inverter capacity Power factor improving capacitorsInverters Protecting inverters from overcurrent MCCBn+1 INVn What to do about leak currentEffects of leak current across ground Circuit interupting fuse Supply PowerRemedies Ffects of leak current across lines Use the electronic thermal built into the inverter Not examples for resistance to fire or explosion InstallationInstallation environment Continuous operation this may result in fire 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 Control and main power supply WiringPreventing 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 Connections with peripheral equipment Power supply and motor connectionsDescription of terminals Main circuit terminals Main circuit Control circuit terminals sink logic By jumper JP302 switching Full scale DC am Input Standard default setting 0~10Vdc input Internal imped~60Hz60Hz setting frequency Put. Standard default setting output cur 1mA full-scale dc During protection function operation Multifunction programmable relay contact= 1, 30Vdc-1A, 250Vac-1A cos φ = At resistance load Output Detects the operation of the inverters 30Vdc-1A Input Common Output Logic switching/voltage-current output switching jumper Operations Main circuit How to operate the VF-S9Wiring Motor E6580757 Mccb Motor Adjustment range Simplified Operation of the VF-S9Monitor display selection Is set to How to set the frequency How to start and stop Potentiometer Setting the frequency using the operation panelExample of operating a run from the panel Moves the frequency down E6580757 VF-S9 has the following three monitor modes Setting monitor mode Mode for setting inverter parametersStatus monitor mode Mode for monitoring all inverter status Basic VF-S9 operations 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 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 Set automatic acceleration/deceleration to or Setting acceleration/deceleration timeBasic parameters Automatic acceleration/deceleration Deceleration time Seconds Manually setting acceleration/deceleration timeParameter setting Title Function Adjustment range Acceleration time Seconds Automatic torque boost Increasing starting torque Auto Automatic torque boost and V/F control mode selectionSet V/F control mode selection to 0 V/F constant If auto-tuning error Appears, see 6.13 Automatic function setting Setting environmental protectionSetting parameters by operating method Automatic environment setting VIA/II UP/DOWN Title Function Adjustment range Selection of operation modeCommand mode selection Frequency setting mode selection Command mode selection Meter setting and adjustment Preset-speed operationMeter selection Meter adjustment Connect meters as shown below Adjustment scale with meter adjustment parameterResolution Example of 4-20mA programmed output for details, see Tion Is set to Standard default settingAdjusting the meter in inverter stop state Default setting Forward/reverse run selection Setting valuesParameter setting Selecting forward and reverse runs operation panel only Upper limit frequency Lower limit frequency Maximum frequencyUpper limit and lower limit frequencies Maximum frequency Base frequency Base frequencyBase frequency 25 ∼ 400 Hz Selection Selecting control modeControl mode selection Time Setting for fans and pumps Constant torque characteristics general method of use This gives steady torque for stable runs Setting V/F control selection Automatic torque boostIncreasing starting torque Motor constant must be set Somewhat lower Precautions on vector controlEnergy-saving Sorless vector control Setting the electronic thermal Manual torque boost increasing torque at low speedsTorque boost Motor electronic thermal pro Title Function Adjustment range Default settingOverload Protection Stall 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 Preset-speed operation frequencies 8~15 Preset-speed operation speeds in 15 stepsInverter over load characteristics Preset-speed operation frequencies 1~7 =6 SS1 Preset-speedS3-CC Terminal functions are as follows Terminal S1 Example of 7-step speed operation Using other speed commands with preset-speed command Extended parameters Low-speed signalLow-speed signal output frequency Low-speed signal output frequency ∼ Hz Output of designated frequency reach signal Parameter setting of output terminal selectionSpeed reach detection band Title Function Adjustment range Setting Output of set frequency speed reach signalSpeed reach setting frequency Speed reach detection band Parameter setting of set frequency and detection band Input signal selection Changing the standby signal functionST standby signal selection Setting the reset signal Always-active function selection Terminal function selectionKeeping an input terminal function always active on Modifying input terminal functions Connection method Contact input Sink logic Setting of contact input terminal functionTerminal Title Function Adjustment range Default setting Input terminal selection 3 RST Reset Input terminal selection Example of application ... Three-wire operationCase of three-wire operation Set to Sink logic/source logic input Output terminal selection Setting of output terminal functionModifying output terminal functions Examples of application Switching motor characteristics via terminal input Setting of switching terminalsBasic parameters Frequency priority selection Automatic frequency switching Contact input. See External switching Fchg enabledSet frequency is cleared automatically after power-off External contact UP/DOWN 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 Simultaneous input Sample sequence diagram 2 Adjustment with pulse signalsFrequency adjustment range Minimum unit of frequency adjustment Function Frequency set with the parameter Starting frequency settingOperation frequency Starting frequency 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 width Jump frequency 3 Jumping width Jump frequency jumping resonant frequencies PWM carrier frequency Preset-speed operation frequency 8 to∼ Preset-speed operation frequency 8 to Random mode Trip-less intensification Auto-restart Restart during coastingAuto-restart control selection DC braking during restart Restarting motor during coasting Motor speed search function Application Regenerative power ride-through controlRegenerative power ride-through control If momentary power failure occurs Canceling conditions Retry functionRetry selection Dynamic braking selection Braking resistor operation rate Dynamic regenerative braking 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 To the base frequency So that no Output voltage adjustment/Supply voltage correction Output voltage unlimited 100.0 Conducting PI controlExternal connection 100.0 Integral gain Types of PI control interfaces Setting PI controlAdjusting the PI control gain level Gain adjustment parameter Adjusting analog command voltages See .2 for details of the setting method Setting motor constantsSelection 1 Setting by automatic torque boost Set the auto-tuning parameter to 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 selection Setting current stallInverter trip retention Stall prevention level Emergency DC braking time External input trip stop mode selectionExternal trip stop via terminals Is set to Emergency DC braking, also set Emergency stopping from the operation panel Output phase failure detectionOutput phase failure detection mode selection Failure detection signal generated FL relay deactivated Input phase failure detection Control mode for small currentInput phase failure detection mode selection Level flows for more than Specified time Title Function Adjustment rangeDisabled Enabled Over-torque trip/alarm level ∼ 250 % Over-torque trip No trip Over-torque Detection signalNo trip Over-torque detection Pre-alarm signal Output terminal function 12 OT Over-torque detection Meter bias Undervoltage trip15.10 4-20mA dc calibration Undervoltage trip selection Setting methods Prohibition of change of parameter settingsExamples of setting Prohibition of change of parameter settings Free unit selection Resetting methodChanging the display unit to A/V/min-1 Unit selection Display in percentage terms Display in amperes/volts Standard monitor display selection Changing the display format while power is onStandard monitor mode ⇒ Standard monitor display selection Changing the status monitor display format Communication function Common serial Communication function parameters Common serial options Using the RS232C/RS485Setting the communication functions Transmission specifications Number, to the host computer Command by communicating independentlyExample of connection for RS485-communication Next data Use the terminal board to branch the cable Setting the operation frequency Operation panel key settingApplied operation S1 UP S2 Down S3 CLR S1FCHG Preset-speed settingSwitching between external contact UP/DOWN VIA input To switch to VIA/II setting, use the external PNL/TB Operation is controlled in accordance with Setting Switching between analog setting and preset-speed settingSignal Voltage signal Setting by means of a remote input device Terminal board operation Setting the operation mode Operation, inverter stop Case of three wire operation Set toEnable to run at HD on Eration holding S1 terminal set to 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 How to cope with the CE directive Taking measures to satisfy the CE/UL directiveAbout the EMC directive Measures to satisfy the EMC directive Single-phase 200V class Example of wiring Plate. Refer to the .1 for earth cable sizes About the low-voltage directiveMeasures to satisfy the low-voltage directive Inverter satisfies the low-voltage directive Peripheral devices Selection of wiring materials and devices Selection of wiring devices Installation of a magnetic contactor Magnetic contactor in the primary circuitMagnetic contactor in the secondary circuit Optional external devices Installation of an overload relay Actor effective for external surge suppression Effect Reactor type Power factor Harmonics Suppression200V-3.7kW Improvement Other model Or less Input AC reactor DC reactor UP/DOWN key, Monitor key, and Enter key Model RKP001Z Ward/reverse switch Model CBVR-7B1Parameter writer Model PWU001Z Extension panel Input AC re Actor Devices DCL Noise filter Devices External dimensions and connections Foot Mounted Devices External dimensions and connections Braking Resistor Communica Devices External dimensions and connections ParameterWriter Exten Sion panel Other Basic parameters Table of parameters and dataUser parameters Four automatic functions Input/output parameters Extended parameters VIB, VIA/II Frequency parameters 0213 VIB input point 400 Frequency Frequency Down Operation mode parameters Torque boost parameters Acceleration/deceleration time 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 Specifications Models and their standard 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 Call the local sales agency Periodical inspectionCheck points Check items 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