Using the RS485, Transmission specifications | Toshiba VF-FS1

E6581381

6.21.2 Using the RS485

■Setting the communication functions

Setting commands and frequencies by communications has priority over sending commands from the operation panel or the terminal board. Command/frequency setting by communications can therefore be enabled, irrespective of the setting in the command mode (EOQF) or the frequency setting mode (HOQF). When inverters are connected to each others, however, in order for slave inverters to recognize frequency signals from the master inverter as frequency commands, the frequency setting mode selection 1 parameter (HOQF) provided for each slave inverter needs to be set to 4 (serial communications). Refer to the COMMUNICATIONS EQUIPMENT USER'S MANUAL for details.

However, when the input terminal function selection parameter is set to 48: SC/LC (Serial/Local selection), the inverter can be operated with the settings of the command mode (EOQF) or the frequency setting mode (HOQF) by external input.

■Transmission specifications

	Item	Specifications
	Transmission scheme	2-wire, Half-duplex
	Connection scheme	Centralized control
	Synchronization scheme	Asynchronous
	Synchronization scheme	Asynchronous		6
	Transmission rate	Default: 19200 baud (parameter setting)		6
	Transmission rate	Default: 19200 baud (parameter setting)
		Option: Either 9600 or 19200 baud
		Option: Either 9600 or 19200 baud
	Character transmission	ASCII code: JIS X 0201 8, 8-bit (fixed)
		Binary code: Binary, 8-bit (fixed)
	Stop bit length	Inverter receiving: 1 bit, Inverter sending: 2 bits
	Error detection	Parity: Even, Odd, or None selectable by parameter setting;
		check sum method
	Character transmission format	Receiving: 11-bit, Sending: 12-bit
	Order of bit transmission	Least significant bit first
	Frame length	Variable to a maximum of 17 bytes

■Example of connection for RS485-communication

<Example of connection>

Host computer

Option

VF-FS1

VF-FS1

VF-FS1

VF-FS1

F-81

Image 177

Toshiba VF-FS1 instruction manual Using the RS485, Setting the communication functions, Transmission specifications

Contents

Industrial Inverter Page 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  Contents  E6581381 Iii Check product purchase Read first Contents of the product Outside view Names and functions Bottom Power circuit terminal board Power circuit and control circuit terminal boards VFFS1-2004 ∼ 2037PM VFFS1-4004 ∼ 4055PL E6581381 E6581381 Grounding capacitor disconnecting switch and taps AWG Control circuit terminal board How to open the front terminal board cover-18.5kW or less How to open the front terminal board cover-22kW or More Motors Low loads and low inertia loads Braking a motor when cutting off power supplyOccurrence of instability Load that produces regenerative torque Braking motor InvertersMeasures to protect motors against surge voltages Protecting inverters from overcurrent If power supply distortion is not negligible Power factor correction capacitorOperating at other than rated voltage MCCB1 Effects of leak current across ground What to do about the leak currentRemedies Elcb Affects of leakage current across lines Installation environment Installation 5cm Standard installation Side-by-side installation How to install Operating motor Calorific Values w Installing more than one unit in a cabinet Page Connection Wiring Control and main power supplyStandard connections Preventing radio noise Standard connection diagram Standard connection diagram Description of terminals Power circuit terminals Power circuit Control circuit terminalsControl circuit terminals VIB VIA FLA FLBFLC PLC Logic switching Operations Simplified Operation of the VF-FS1 EoqfHoqf Example of a Eoqf setting procedure How to start and stopStart and stop using the operation panel keys EOQF= Coast stop Example of a Hoqf setting procedure How to set the frequencyExample of operating a run from the panel HOQF Frequency setting Setting the frequency using the operation panel HOQF= or How to operate the VF-FS1 Mccb Page Setting monitor mode Mode for setting inverter parameters Mode for monitoring all inverter statusBasic VF-FS1 operations Flow of status monitor mode Basic parameters Extended parameters User parameters How to set parameters Changes the parameter setting Saves the changed value How to set the basic parameters How to set extended parameters Example of parameter setting Search and resetting of changed parameters I4WHow to search and reprogram parameters ITW Setting a parameter, using the wizard function CWH CEEHTH How Parameters of Quick setting wizard How to use the wizard function How to use the history function CWJJgcf CW Parameters that cannot be changed while running Returning all parameters to standard default setting How to save/load the user setting parametersKpkv Page Setting acceleration/deceleration time Basic parametersAutomatic acceleration/deceleration Manually setting acceleration/deceleration time Methods of setting automatic acceleration/decelerationCWK Function Adjustment range Default setting UP/DOWN Specifying an operation mode, using parametersEOF UP/DOWN HOF RES PLC VIA VIB OFF Setting mode Switching of commands and references Selection of operation mode Command mode selection Preset-speed operation Frequency setting mode selection Houn Meter selection HO Meter adjustment Meter setting and adjustmentHOUN= Houn Resolution Adjustment scale with parameter HO Meter adjustmentVF-FS1 HOUN= Adjusting the meter in inverter stop state Standard default setting VR Default settingProgrammed value E6581381 HT Forward/reverse run selection Operation panel operation Forward/reverse run selection Operation panel operation Upper limit and lower limit frequencies Maximum frequencyHJ Maximum frequency WN Upper limit frequency NN Lower limit frequency XN Base frequency XNX Base frequency voltage Base frequency RV V/F control mode selection Selecting control mode Setting for fans and pumps Constant torque characteristics Motor constant must be set Increasing starting torque + Motor constant must be set Precautions on vector controlEnergy-saving Operating a permanent magnet motor E6581381 Valid, Invalid Setting the electronic thermal Manual torque boost increasing torque boost at low speedsXD Torque boost Motor electronic thermal protection level QNO Setting value Overload protection Overload stall Motor 150%-overload time limit H Inverter over load characteristics Preset-speed operation speeds in 7 steps UT UT Preset-speed operation frequenciesThermal memory selection H UT UTUT UT Below is an example of 7-step speed operation Low-speed signal output frequency Low-speed signalExtended parameters Input/output parameters Speed reach detection band Output of designated frequency reach signal Designated frequency Output of set frequency speed reach signal Input signal selection Changing the functions of VIA terminal VIA terminal function selection Terminal function selection Keeping an input terminal function always active onModifying input terminal functions Setting of contact input terminal function Connection with transistor output Connection method 1 A-contact input Modifying output terminal functions Sink Negative logic / Source Positive logic inputExamples of application Assigning two functions to an output terminal Assigning one function to an output terminalRY RC RY-RC Holding the output of signals in on status Input terminal functionHdry FLA-FLB-FLC Comparing the frequency command values Basic parameters Switching motor characteristics via terminal input Setting of switching terminals Frequency priority selectionAD2 VF2 MOT2 OCS2 OFF Automatic switching by frequency command External switching Input terminal function 38 Fchg enabled Setting frequency command characteristics VIA, VIB terminals 10Vdc voltage input adjustment VIA, VIB Setting of frequency with the input from an external contact Adjustment with pulse signals Parameter-setting example Sample sequence diagram 1 Adjustment with continuous signals Frequency adjustment range About the setting of the initial up/down frequencyMinimum unit of frequency adjustment About the change of the initial up/down frequency Fine adjustment of frequency setting signal Starting frequency setting 2 Run/stop control with frequency setting signalsOperation frequency Starting frequency DC braking DC braking OFF Jump frequency jumping resonant frequencies Bumpless operation selection Bumpless operation PWM carrier frequency 0.75kW 15kW E6581381 Trip-less intensification Auto-restart Restart of coasting motor Auto-restart control selection Motor speed search at starting Restarting motor during coasting Motor speed search function Instantaneous power failure coast stop selection Instantaneous power failure coast stop selection Retry selection Selecting the number of times Retry function E6581381 Avoiding overvoltage tripping Output voltage adjustment/Supply voltage correction Reverse-run prohibition Canceling the operation command  Droop gain  Droop insensitive torque band Droop control E6581381 External connection Conducting PID control Setting PID control Adjusting the PID control gain levelTypes of PID control interfaces I-gain adjustment parameter P-gain adjustment parameter D-gain adjustment parameter Adjusting analog command voltagesSetting the time elapsed before PID control starts Setting motor constants Setting motor constants Set the auto-tuning parameter H to Auto-tuning enabled E6581381 Setting motor constants 2 Details E6581381 Selecting an acceleration/deceleration pattern Acceleration/deceleration time Switching acceleration/deceleration time 1 E6581381 Protection functions Setting motor electronic thermal protection Stall prevention level Setting current stall Inverter trip retention  Inverter trip retention selection Emergency stop Emergency DC braking time Emergency stopExternal trip stop via terminals Emergency stopping from the operation panel Output phase failure detection mode selection Output phase failure detection Input phase failure detection Control mode for small current Input phase failure detection mode selection Detection of output short-circuit during start-up Detection of output short-circuit Over-torque trip OFF On OFF Cumulative operation time alarm setting Cumulative operation time alarm settingOver-voltage stall protection level Over-voltage stall protection level Undervoltage trip Undervoltage trip/alarm selection Trip at VIA low level input mode Parts replacement alarms Trip at VIA low level input mode Motor PTC thermal protection Evasion from Overvoltage and Imput phase failure NNWN Forced fire-speed control function Adjustment parameters Example of settingCalibration of analog outputs Prohibition of key operations and parameter settings Resetting methodOperation panel parameter Current / voltage unit Changing the unit to a An example of setting when HJ is 80 and H is When H is not 0.00, and H is not 0 disabled Changing the steps in which the value displayed changes Free pressing a panel key once Free panel display Changing the item displayed by default Changing the display format while power is on Standard monitor display selection Selection of operation panel stop pattern Integral output powerDisplay of the head of the parameters Selection of operation panel stop pattern Title Error by disconnection Setting of common functionCommunication function Common serial Communication rate Communication function parameters Common serial options E6581381 Setting the communication functions Using the RS485Transmission specifications Example of connection for RS485-communication Wiring Permanent magnetic motors Parameters for optionsPage Applied operation Setting the operation frequencyHOQF HOQF P24 Hoqf Hoqf PLC VIA SS3 VIB RES RES SC/LC Setting the operation mode RES SC/LC PLC VIA VIB Monitoring the operation status Status monitor modeStatus monitor under normal conditions LED VIA RES KK Pgtt ⇔ Display of detailed information on a past trip Display of trip information Trip code displayDisplay of trip information Example of call-up of trip information Display of trip information at the occurrence of a trip Input terminal KK FE06 OFF Cause of the trip is displayed E6581381 Page How to cope with the CE directive Measures to satisfy the standardsAbout the EMC directive Measures to satisfy the EMC directive Three-phase 400V class About the low-voltage directive Example of wiring Compliance with UL Standard and CSA Standard Compliance with InstallationMeasures to satisfy the low-voltage directive Compliance with Connection AIC, Fuse and Wire sizes Motor thermal protectionAIC a Peripheral devices Selection of wiring materials and devices Input current a Selection of wiring devices Magnetic contactor in the primary circuit Installation of a magnetic contactor Magnetic contactor in the secondary circuit Installation of an overload relay Optional external devices Page Table of parameters and data 11.1 User parameters11.2 Basic parameters Houn UT Input/output parameters Extended parameters Frequency parameters NNWN Operation mode parameters Torque boost parameters Protection parameters Acceleration/deceleration time parameters Operation panel parameters Output parameters Communication parameters PM motor parameters Default settings by inverter rating AD2 Table of input terminal functions OHN LLN Table of output terminal functions UCN Pidfn Order of precedence of combined functions Specifications Models and their standard specificationsStandard specifications Common specification Display Outside dimensions and mass Outside dimensions and mass Fig.A Outline drawing Fig.E Trip causes/warnings and remedies Before making a service call Trip information and remedies QR GTT QHH Restoring the inverter from a trip If the motor does not run while no trip message is displayed How to cope with parameter setting-related problems How to determine the causes of other problemsPage Regular inspection Inspection and maintenance Periodical inspection Check pointsCheck items Replacement of expendable parts Standard replacement cycles of principal parts Keeping the inverter in storage Making a call for servicingPage Warranty Disposal of the inverter Page Toshiba