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Toshiba VF-S9 manual 6.12.5, Avoiding overvoltage tripping, Overvoltage limit operation

Models: VF-S9

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4) Minimum resistances of connectable braking resistors

E6580757

4) Minimum resistances of connectable braking resistors

The minimum allowable resistance values of the externally connectable braking resistors are listed in the ta- ble below.

Do not connect braking resistors with smaller resultant resistances than the listed minimum allowable resis- tance values.

Inverter rated	200V class		400V class
output capacity	Resistance of	Minimum allowable	Resistance of	Minimum allowable
(kW)	standard option	resistance	standard option	resistance

0.2	200Ω	63Ω	-	-
0.4	200Ω	63Ω	-	-
0.75	200Ω	42Ω	200Ω	99Ω
1.5	75Ω	30Ω	200Ω	99Ω
2.2	75Ω	30Ω	200Ω	73Ω
3.7	40Ω	24Ω	160Ω	73Ω
5.5	20Ω	10Ω	80Ω	44Ω
7.5	15Ω	10Ω	60Ω	44Ω
11	10Ω	7Ω	40Ω	22Ω
15	7.5Ω	7Ω	30Ω	22Ω

6.12.5			Avoiding overvoltage tripping
6				: Overvoltage limit operation
		•	Function
			This parameter keeps the output frequency constant or increases the frequency to prevent overvolt-
			age tripping due to increases in DC voltage during deceleration or constant-speed operation. The
			deceleration time during overvoltage limit operation may increase above the designated time.
			Overvoltage limiting level
	Output
		frequency
	DC voltage					Overvoltage limiting level
	DC voltage
		[Parameter setting]
			Title		Function		Adjustment range	Default setting

				Overvoltage limit operation			0: Enabled	0
				Overvoltage limit operation			1: Prohibited	0
							1: Prohibited

F-30

Image 114

Toshiba VF-S9 manual 6.12.5, Avoiding overvoltage tripping, Minimum resistances of connectable braking resistors

Contents

2000 Ver 1-phase 200V class 0.2 2.2kW 3-phase 200V class 0.2 15kW3-phase 400V class 0.75 15kW Instruction ManualContents E6580757E6580757 E6580757 Safety precautions I. Safety precautionsMeanings of symbols Explanation of markingsGeneral operation DangerE6580757 Danger Transportation ‚ InstallationWiring DangerDanger OperationsDanger E6580757Danger When retry function is selected inverterMaintenance and inspection E6580757WarningFunctions pro- grammed for restart I DisposalAttach warning labels Warning Functions pro- grammed for retry1. Built-in noise filter FeaturesII. Introduction 2. Simple operation1. Read first 1.1 Check product purchase1.2 Contents of the product code 1.3 Names and functions 1.3.1 Outside viewParameter writer Extension panel RS485/RS232C Terminal board cover Charge lampTerminal board cover lock screwsBottom Top warning label Note Wiring hole Cooling finVentilation slits Name Plate Side1.3.2 Main circuit and control circuit terminal boards VFS9-4007PL ∼ 4037PL 2015PMVFS9-2022PM/2037PM VFS9S-2002PM ∼VFS9-2110PM/2150PM 4110PL/4150PL Screw hole of EMC plate1.3.3 How to open the front terminal board cover Remove the screw at the right hand side of the front coverPull and lift the front terminal board cover out toward you 1.4 Notes on the application Comparisons with commercial power operationAdjusting the overload protection level 1.4.1 MotorsOccurrence of instability Braking a motor when cutting off power supplyExtremely low loads and low inertia loads Loads that generate negative torqueInverters Power factor improving capacitors1.4.2 Protecting inverters from overcurrent1.4.3 What to do about leak current Disposal1 Effects of leak current across ground Remedies 2 E ffects of leak current across linesInverter Remedies Remedies1.Use the electronic thermal built into the inverter 1.4.4 Installation Installation environmentDanger 5cm 5cm Ambient temperature of 40 C or less model of 3.7kW or less How to install DangerInstallation location Ambient temperature of 50 C or less model of 5.5kW or moreCalorific values of the inverter and the required ventilation Panel designing taking into consideration the effects of noiseInstalling more than one unit in a cabinet Danger 2.1 Cautions on wiring2. Connection equipment DangerPreventing radio noise Control and main power supplyWiring Danger2.2 Standard connections Danger2.2.1 Standard connection diagram 1 - sink common CC VF-S9communications 2.2.2 Standard connection diagram 2 - source common P24VF-S9 JP3022.3.1 Main circuit terminals Power supply and motor connections2.3 Description of terminals Connections with peripheral equipment＋24V 2.3.2 Control circuit terminals sink logicMain circuit SINK SOURCEPage +24V +24VJP301 ＋5V logic switching of input output terminals Sink logic negative common/source logic positive commonLogic switching/voltage-current output switching jumper 3. Operations Danger3.1 How to operate the VF-S9 Page V/T2 MCCB R/L1 S/L2 T/L3U/T1 W/T3Main circuit Current signal 4 ∼or voltage signal to VIA-CC 0 ∼ 20mA3.2 Simplified Operation of the VF-S9 1 Start and stop using the operation panel keys 3.2.1 How to start and stop3.2.2 How to set the frequency 2 Start and stop using external signals to the terminal boardExample of operating a run from the panel 2 Setting the frequency using the operation panel3 Setting the frequency using external signals to the terminal board Frequency settingSetting frequency using voltage signals 0~10V. For more detailed information on adjustments, see inverter power goes on Standard monitor modeThe standard inverter mode. This mode is enabled when Setting monitor mode4.1 How to set parameters Reads the programmed parameter setting Changes the parameter setting 4.1.1 How to set the basic parametersSwitches to the setting monitor mode Selects parameter to be changed Saves the changed value of the parameter setting4.1.2 How to set extended parameters 4.1.3 Search and resetting of changed parameters Example of parameter settingHow to search and reprogram parameters E65807574.1.4 How to program setup parameters Setup parametersbe changed while the inverter is running 4.1.6 Returning all parameters to standard default setting4.1.5 Parameters that cannot be changed while running Rated capacity ratio of motor to inverterSteps for returning all parameters to standard default setting E65807575.1.1 Automatic acceleration/deceleration 5.1 Setting acceleration/deceleration time5. Basic parameters Automatic acceleration/decelerationOutput frequency Hz 5.1.2 Manually setting acceleration/deceleration timemanual setting Time s5.2 Increasing starting torque Automatic torque boostSet V/F control mode selection to 0 V/F constant automatic torque boost and V/F control mode selectionThe VF-S9 inverter is set to this control mode by factory default 2 Increasing torque manually V/F constant controlAutomatic environment setting 5.3 Setting environmental protection5.4 Setting parameters by operating method Automatic function settingCan be operated by a momentary push-button. HD operation holding is assigned to the terminal S3. A self-holding of operations is made in the inverter by connecting the stop switch b-contact to the S3 termi Frequency setting mode selection 5.5 Selection of operation modeCommand mode selection Command mode selection5.6 Meter setting and adjustment 5 Preset-speed operationMeter selection Meter adjustment Example of 4-20mA programmed output for details, see Adjustment scale with meter adjustment parameterResolution Frequency meter Meter frequency meter default setting5.7 Standard default setting Adjusting the meter in inverter stop stateDefault setting 5.8 Selecting forward and reverse runs operation panel only Setting valuesParameter setting Forward/reverse run selectionMaximum frequency 5.9 Maximum frequency5.10 Upper limit and lower limit frequencies Upper limit frequency Lower limit frequencyParameter setting 5.11 Base frequencyBase frequency Frequency setting signal5.12 Selecting control mode V/F control mode selectionParameter setting 1 Constant torque characteristics general method of use 2 Setting for fans and pumpshappen, set V/F control mode selection 3 Increasing starting torqueMotor constant must be set Motor constant must be setMotor constant must be set 6 Precautions on vector control5 Energy-saving ⇒ For details, see selection 3 in5.14 Setting the electronic thermal 5.13 Manual torque boost - increasing torque at low speedsTorque boost Parameter setting 1 Setting the electronic thermal protection characteristics selectionmotor electronic thermal protection level 10 ∼Press the ENTER key to display the parameter setting. Standard Setting of electronic thermal protection characteristics selectionSetting of motor electronic thermal protection level The motor overload protection start level is fixed at 30HzSetting the motor electronic thermal protection level Using a VF motor motor for use with inverterSetting selection of electronic thermal protection characteristics valid, ⋅ invalidPreset-speed operation frequencies 1~7 5.15 Preset-speed operation speeds in 15 steps2 Inverter over load characteristics Preset-speed operation frequencies 8~15E6580757 E-233 Using other speed commands with preset-speed command Example of 7-step speed operationsame time 6. Extended parameters 6.1.1 Low-speed signalLow-speed signal output frequency 6.1 Input/output parametersParameter setting of output terminal selection 6.1.2 Output of designated frequency reach signalParameter setting of designated frequency and detection band Speed reach detection bandParameter setting of set frequency and detection band 6.1.3 Output of set frequency speed reach signalSpeed reach setting frequency Speed reach detection band Parameter setting of output terminal selection6 ST standby signal selection 6.2 Input signal selection6.2.1 Changing the standby signal function Parameter setting2 Standby always on Default setting 6.2.2 Setting the reset signal1 Standby on when ST is on 4 Standby on when ST is off6.3.2 Modifying input terminal functions 6.3 Terminal function selection6.3.1 Keeping an input terminal function always active ON Always-active function selection2 Connection with transistor output Setting of contact input terminal functionConnection method 1 A-contact input Sink logic This function is activated when the inputInverter Example of application ... Three-wire operation3 Sink logic/source logic input Inverter internalOutput terminal selection 1 RY-RC Output terminal selection 2 OUT Setting of output terminal function6.3.3 Modifying output terminal functions Output terminal selection 3 FLA/B/C6.4 Basic parameters 6.4.1 Switching motor characteristics via terminal inputSetting of switching terminals Base frequency Torque boost Motor electronic-thermal protection level1 Automatic frequency switching 6.5.1 Using a frequency command according to the particular situationFrequency setting mode selection Frequency priority selection 6.5 Frequency priority selection4 External contact UP/DOWN 2 Automatic frequency switching3 External switching FCHG enabled 6 VIA/II + VIBVIA/II input point 2 setting VIA/II input point 2 frequency 6.5.2 Setting frequency command characteristicsVIA/II input point 1 setting VIA/II input point 1 frequency VIB input point 1 setting Frequency UP response time3 Setting frequency via external contact input only when = , = or 1 0-10Vdc voltage input adjustment VIA, VIB2 4-20mAdc current input adjustment Adjustment with continuous signals Parameter-setting exampleSample sequence diagram 1 Adjustment with continuous signals Adjustment with pulse signals Parameter-setting exampleMinimum unit of frequency adjustment Sample sequence diagram 2 Adjustment with pulse signalsFrequency adjustment range Simultaneous inputStarting frequency setting 6.6 Operation frequency6.6.1 Starting frequency 6.7.1 DC braking 6.6.2 Run/stop control with frequency setting signals6.7 DC braking Operation starting frequency Operation starting frequency hysterisis6.8 Jog run mode Jog run frequency Jog run stopping patternterminal jog run settingNormal operation frequency setting signal input Set frequency6.9 Jump frequency - jumping resonant frequencies Jump frequency Jumping width Jump frequency Jumping widthJump frequency 3 Jumping width Random mode 6.10 Preset-speed operation frequency 8 to∼ Preset-speed operation frequency 8 to 6.11 PWM carrier frequency6.12 Trip-less intensification 6.12.1 Auto-restart Restart during coastingAuto-restart control selection 3 DC braking during restart 1 Auto-restart after momentary power failure Auto-restart function2 Restarting motor during coasting Motor speed search function Input voltage Motor speed F-CC6.12.2 Regenerative power ride-through control Regenerative power ride-through control6.12.3 Retry function 6.12.4 Dynamic regenerative braking Dynamic braking selection Braking resistor operation rate1 Connecting an external braking resistor optional Connecting thermal relays and an external braking resistor2 Setting the braking resistor operation rate 4 Minimum resistances of connectable braking resistors 6.12.5Avoiding overvoltage tripping Overvoltage limit operationwhen operating a special motor with low induced voltage 6.12.6 Output voltage adjustment/Supply voltage correctionOutput voltage adjustment Base frequency voltage voltage exceeding thePage Proportional gain Integral gain 6.12.7 Conducting PI controlProportional/integral control PI control 1 External connectionP-gain adjustment parameter 3 Setting PI control4 Adjusting the PI control gain level 2 Types of PI control interfacesI-gain adjustment parameter 5 Adjusting analog command voltagesSelection 1 Setting by automatic torque boost 6.13 Setting motor constantsAuto-tuning Slip frequency Motor primary constant Set the auto-tuning parameter toSelection 3 Setting vector control and manual tuning independently E6580757F-37 Set the slip frequency for the motor. A higher slip frequency reduces motor slipping correspond Acceleration time Deceleration time Acceleration time Acceleration/deceleration 1 and 2 switching frequency6.14 Acceleration/deceleration patterns and acceleration/deceleration Deceleration timeAcceleration/deceleration patterns 1 Linear acceleration/decelerationSwitching to acceleration/deceleration 6.15.1 Setting motor electronic thermal protection 6.15 Protection functionsMotor electronic thermal protection level Stall prevention level 6.15.2 Setting current stall6.15.3 Inverter trip retention Inverter trip retention selection6.15.4 External input trip stop mode selection External input trip stop mode selection Emergency DC braking time1 External trip stop via terminals 6.15.5 Output phase failure detection Output phase failure detection mode selection2 Emergency stopping from the operation panel Input phase failure detection mode selection 6.15.6 Input phase failure detection6.15.7 Control mode for small current Small current trip/alarm detection currentOver-torque trip/alarm level hysterisis Over-torque trip selection Over-torque trip/alarm levelOver-torque trip/alarm detection time 6.15.8 Over-torque tripE6580757 2 Output terminal function 20 POT Over-torque detection pre-alarm1 Output terminal function 12 OT Over-torque detection F-48Undervoltage trip selection 6.15.9 Undervoltage trip6.15.10 4-20mA dc calibration Meter biasProhibition of change of parameter settings 6.16.1 Prohibition of change of parameter settingsExamples of setting Setting methodsUnit selection Resetting method6.16.2 Changing the display unit to A/V/min-1 Free unit selectionAn example of setting for displaying the motor speed or load speed Input DC voltage6.16.3 Changing the status monitor display format Changing the display format while power is onStandard monitor mode ⇒ Standard monitor display selection Standard monitor display selectionCommunication error trip time 6.17 Communication function Common serialData transfer speed Parity Inverter number Transmission specifications 6.17.2 Using the RS232C/RS485Setting the communication functions Communication function parameters Common serial optionsExample of connection for RS485-communication 7.1 Setting the operation frequency 7. Applied operationUse the parameters for thisS2 S3 CC PP VIB I VIA CC E6580757 7.2 Setting the operation mode Terminal boardE6580757 E6580757 E6580757 E6580757 8.2 Display of trip information Display of trip informationExample of call-up of trip information Output terminal FLE6580757 9.1 How to cope with the CE directive 9. Taking measures to satisfy the CE/UL directive9.1.1 About the EMC directive 9.1.2 Measures to satisfy the EMC directive E6580757Example of wiring 9.1.3 About the low-voltage directive 9.1.4Measures to satisfy the low-voltage directive 10.1 Selection of wiring materials and devices 10. Peripheral devicesDanger Selection of wiring devices Magnetic contactor in the primary circuit 10.2 Installation of a magnetic contactorNotes on wiring Magnetic contactor in the secondary circuit5 Foot-mounted 10.3 Installation of an overload relay10.4 Optional external devices 2 DC reactordistribution system Function and purpose Input AC re External dimensions and connectionsDevices actorFig.A Fig.CFig.B H1Mounting Page Extension panel Communication ConverterParameter writer 11.2 Basic parameters 11. Table of parameters and data11.1 User parameters Four automatic functions11.3 Extended parameters Input/output parametersto or ,function of Frequency parameters5 Set the parameter is bottom of paragraphE6580757 Operation mode parameters E6580757Protection parameters Torque boost parametersAcceleration/deceleration time parameters E6580757Operation panel parameters Communication parametersE6580757 Default settings by inverter rating Table of input terminal functions 1/3Table of input terminal functions 2/3 E6580757 Table of input terminal functions 3/3Table of output terminal functions 1/2 K-10Table of output terminal functions 2/2 E6580757K-11 Order of precedence of combined functions 12. Specifications 12.1 Models and their standard specificationsC above 50 C Note 3. Side-by-side installation Note 1. Above 40 C Remove the protective seal from the top of VF-S9Model of 5.5kW or more from - 10 C to 50 C 12.2 Outside dimensions and mass Outside dimensions and massplate VFS9Fig.A ¿5 Outline drawing13. Before making a service call Trip information and remedies 13.1 Trip causes/warnings and remediesE6580757 ContinuedWith a parameter, you can choose between trip-on and -off E6580757Continued Continued overleafE6580757 13.2 Restoring the inverter from a trip 13.3 If the motor does not run while no trip message is displayed YES NO13.4 How to determine the causes of other problems E6580757How to cope with parameter setting-related problems 14. Inspection and maintenance 14.1 Regular inspectionDanger Check items 14.2 Periodical inspectionCheck points DangerReplacement of expendable parts Standard replacement cycles of principal parts 14.3 Making a call for servicing14.4 Keeping the inverter in storage 15. Warranty 16. Disposal of the inverter E6580757TOSHIBA CORPORATION TOSHIBA INDUSTRIAL PRODUCTS MANUFACTURING CORPORATION