Important InformationNOTICERead these instructions carefully,and look at the equipment to bee familiar with the device before trying to install,operate,or maintainit.The following special messages may appear throughout this documentation or on the equipment to warn of potential hazards or to callattention to information that dlarifies or simplifies a procedure.The addition of this symbol to a Danger or Waming safety label indicates that an electrical hazard exists,which will result inpersonal injury if the instructions are not followed.This is the safety alert symbol.It is used to alert you to potential personal injury hazards.Obey all safety messages that followthis symbol to avoid possible injury or death.A DANGERDANGER indicates an imminently hazardous situation,which,if not avoided,will result in death or serious injury.A WARNINGWARNING indicates a potentially hazardous situation,which,if not avoided,can result in death,serious injury orequipment damage.A CAUTIONCAUTION indicates a potentially hazardous situation,which,if not avoided,can result in injury or equipmentdamage.CAUTIONCAUTION,used without the safety alert symbol,indicates a potentially hazardous situation which,if not avoided,can result in equipment damage.PLEASE NOTEThe word "drive"as used in this manual refers to the controller portion of the adjustable speed drive as defined by NEC.Electrical equipment should be installed,operated,serviced,and maintained only by qualified personnel.No responsibility is assumed bySchneider Electric for amy consequences arising out of the use of this product.2009 Schneider Electric.All Rights Reserved.Before you beginRead and understand these instructions before performing any procedure with this drive.AA DANGERHAZARD OF ELECTRIC SHOCK,EXPLOSION,OR ARC FLASHRead and understand this manual before installing or operating the Altivar 312 drive.Installation,adjustment,repair,andmaintenance must be perfommed by qualified personnel.The user is responsible for pliance with all international and national electrical code requirements with respect to grounding ofall equipment.Many parts of this drive,including the printed circuit boards,operate at the line voltage.DO NOT TOUCH.Use only electricallyinsulated tools.DO NOT touch unshielded ponents or terminal strip screw connections with voltage present.DO NOT short across terminals PA/+and PC/-or across the DC bus capacitors.Before servicing the drive:Disconnect all power,including external control power that may be present.Place a "DO NOT TURN ON"label on all power disconnects.Lock all power disconnects in the open position.WAIT 15 MINUTES to allow the DC bus capacitors to discharge.Then follow the"Bus Voltage Measurement Procedure",seeInstallation manual,to verify that the DC voltage is less than 42 V.The drive LEDs are not indicators of the absence of DCbus voltage.Install and close all covers before applying power or starting and stopping the drive.Failure to follow these instructions will result in death or serious injury.A DANGERUNINTENDED EQUIPMENT OPERATIONRead and understand this manual before installing or operating the Altivar 312 drive.Any changes made to the parameter settings must be performed by qualified personnel.Failure to follow these instructions will result in death or serious injury.A WARNINGDAMAGED DRIVE EQUIPMENTDo not operate or install any drive or drive accessory that appears damaged.Failure to follow these instructions can result in death,serious injury,or equipment damage.A WARNINGLOSS OF CONTROLThe designer of any control scheme mustconsider the potential failure modes of control paths and,for certain critical control functionsprovide a means to achieve a safe state during and after a path failure.Examples of critical control functions are emergency stop and overtravel stop.Separate or redundant control paths must be provided for critical control functions.System control paths may indlude munication links.Consideration must be given to the implications of unanticipatedtransmission delays or failures of the link.aFailure to follow these instructions can result in death,serious injury,or equipment damage.BBV528180420095Documentation structureThe following Altivar 312 technical documents are available on the Schneider Electric website (www.schneider-electric.)as well as onDVD-ROM(reference VW3A8200).Installation manualThis manual describes how to install and wire the drive.Programming manualThis manual describes the functions,parameters and use of the drive terminal (integrated display terminal,optional graphic display terminaland optional remote terminal).The munication functions are not described in this manual,but in the manual for the bus or work used.Simplified manualThis manual is a simplified version of the User manual.This manual is delivered with the drive.Quick Start sheetThe Quick Start describes how to wire and configure the drive to start motor quickly and simply for simple applications.This document isdelivered with the drive.Communication manuals:Modbus,CANopen,..These manuals describe the assembly,connection to the bus or work,signaling,diagnostics,and configuration of the munication-specific parameters.They also describe the munication protocol services.Communication variables manualThe Communication variables manual defines the drive control processes and the drive variables which can be accessed by themunication buses:Modbus,CANopen,..PresentationThe Modbus socket on the Altivar 312 can be used for the following functions:·Settings·ControlMonitoringThe ATV312 drive supports:The 2-ire RS485 physical layerThe RTU transmission modeThis guide contains information on installation and describes the Modbus services available.The "munication variables"guidedescribes the operating modes,as well as the Altivar 312 variables and parameters which can be accessed via the munication bus.BBV528160420097Connection to RS485 busConnection to ATV312Connection accessories should be ordered separately (please consult our catalogues).Connect the RJ45 cable connector to the ATV312 connector.Pin out of the ATV312 RJ45 ConnectorView from underneath81PinSignal1CANopen signal reserved2CANopen signal reserved3CANopen signal reserved4D1 Modbus signal5DO Modbus signal6Not connected7VP(1)8Common Modbus signal(1)Supply for RS232 RS485 converter or aremote teminalProtection against interferenceUse the Telemecanique cable with 2 pairs of shielded twisted conductors (reference:TSXCSA100.TSXCSA200.TSXCSA500).Keep the Modbus cable from the power cables (30 cm minimum).Make amy crossovers of the Modbus cable and the power cables at right-angles,if necessary.Connect the cable shielding to the ground of each device.For more infomation,please refer to the TSX DG KBL E guide:"Electromagic patibility of industrial works and fieldbuses".RS485 bus schematicThe RS485 standard allows variants of different characteristics:·polarisation·line terminatordistribution of a reference potential·number of slaves·length of busThe new Modbus specification published on the Modbus.org site in 2002 contains precise details of all these characteristics.They are alsosummarised in the next paragraph (Standard schematic).The new Telemecanique devices conform to this specification.Some devices ply with earlier specifications.The two most mon works are described in the appendices:"Uni-Telway schematic"page 16"Jbus schematic"page 17Requirements enabling different types of protocol to coexist are given in the appendix:"Mixed schematic"page 18In case of coexistence of different types of protocol,see the appendix page 21.Configuration of the Modbus serial portCommunication Menu StructureThe munication parameters are part of the COM-and FLt-menus.These parameters are accessible as follows:Communication configuration-Parameters decriptionParameter descriptionRange or listed valuesdefaultLong nameShort nameModbus Address1to2471[Modbus Address]Modbus baud rate4.8 kbps19.2 kbps[Modbus baud rate]9.6 kbpsImportant:only 19.2 kbps baud19.2 kbpsrate allows to municate withthe remote display）Modbus format801:8 bits,odd parity,1 stop bit.8E1[8 odd 1 stop]8E1:8 bits,even parity,1 stop bit.[8 even 1 stop]BE I8N1.8 bits,no parity.1 stop bit[8 no 1 stop]8N2:8 bits,no parity,2 stop bits.[8 no 2 stop]Modbus time outAdjustable from 0.1 to 30s10s[Modbus time out]Modbus fault mgtNo action.[No][Freewheel】(This parameter is not aRamp stop[Ramp Stop]munication managementFast stop"[Fast Stop]parameter）A WARNINGLOSS OF CONTROLIf Modbus fault management LL is set tonO,munication control will be inhibited.For safety reasons,inhibition of municationfault should only be used for adjustment or special applications purpose.Failure to follow these instructions can result in death,serious injury,or equipment damage.BBV52818042009Connection to RS485 busStandard schematicThe standard schematic responds to the Modbus specification published on the Modbus.org site in 2002(Modbus_over_serial_line_V1.pdf,Nov 2002)and in particular to the schematic of the 2-wire multidrop serial bus.The ATV312 drive confomms to this specification.Schematic diagram:MasterD11200CommonType of trunk cableShielded cable with 1 twisted pair and at least a third conductorMaximum length of bus1000 m at 19200 bps with the Telemecanique TSX CSA.cableMaximum number of stations (without32 stations.ie.31 slavesrepeater)Maximum length of tap links20 m for one tap link40 m divided by the number of tap links on a multiple junction boxBus polarisationOne 450 to 650 2 pulldown resistor at 5 V(650 remended)One 450 to 650 2 pulldown resistor at the Common(650 remended)This polarisation is remended for the master.One 120 0.25 W resistor in series with a 1nF 10 V capacitorCommon polarityYes (Common),connected to the protective ground at one or more points on the busModbus protocolConfiguration of the serial linkConfiguration of the serial link parameters can be accessed from the Communication menu COM-ParametersPossible valuesTerminal displayDefault valueAddress1to2471Speed4800 bps19200bps9600 bps9.619200bps(1)19.2Fomat8 data bits,odd parity,1 stop bit8E18 data bits,even parity.1 stop bit (1)8 data bits,no parity,1 stop bit8 data bits,no parity,2 stop bits(1)The display terminal will only work with these values.RTU modeThe transmission mode used is RTU mode.The frame contains no message header byte,nor end of message bytes.It is defined as follows:SlaveRequest codeDataCRC16addressThe data is transmitted in binary codeCRC16:cyclical redundancy check.The end of the frame is detected on a silence greater than or equal to 3 characters.PrincipleThe Modbus protocol is a master-slave protocol.MasterOnly one device can transmit on the line at any time.The master manages the exchanges and only it can take the initiativeIt interrogates each of the slaves in succession.No slave can send a message unless it is invited to do so.The master repeats the question when there is an incorrect exchange,and dedares the interrogated slaveabsent if no response is received within a given time period.If a slave does not understand a message,it sends an exception response to the master.The master may ormay not repeat the request.Slave iSlaveSlave kDirect slave-to-slave munications are not possibleFor slave-to-slave munication,the application software must therefore be designed to interrogate a slave and send back data receivedto the other slave.Two types of dialogue are possible between master and slaves:the master sends a request to a slave and waits for its responsethe master sends a request to all slaves without waiting for a response(broadcasting principle)AddressesThe drive Modbus address can be configured from 1 to 247.Address 0 coded in a request sent by the master is reserved for broadcasting.ATV 312 drives take account of the request,but do notrespond to it.BBV52818042009Modbus protocolModbus functionsThe following table indicates which Modbus functions are managed by the Altivar 312,and specifies their limits.The "read"and write"functions are defined from the point of view of the master.CodeFunction name(decimal)BroadcastingMax.value of NModbus standard name3Read N output wordsNO29 words max.Read Holding Registers6Write one output wordYESPreset Single Register16Write N output wordsYES27 words max.Preset Multiple Regs43NORead Device ldentificationRead N output words:function 3Note:Hi=high order byte,Lo=low order byte.This function can be used to read all ATV 312 words,both input words and output words.RequestSlave03No.of first wordNumber of wordsCRC16no.LoLoHi1 byte1 byte2 bytes2 bytes2 bytesResponseSlave03Number ofFirst word valueLast word valueCRC16no.bytes readHiLoHiLoLo1 byte1 byte1 byte2 bytes2bytes2 bytesExample:read 4 words W3102 to W3105 (16#0C1E to 16#0C21)in slave 2,using function 3,where:SFr Switching frequency=4 kHz (W3102=16#0028)tFr Maximum output frequency 60 Hz (W3103 16#0258)HSP High speed 50 Hz (W3104 =16#01F4)LSP Low speed 0 Hz (W3105 16#0000)Request020004276CResponse0203080028025801F4000052B0Value of:W3102W3103W3104W3105Parameters:SFrtFrHSPLSPWrite one output word:function 6Request and response (the frame format is identical)Slave06Word numberValue of wordCRC16no.LoHiLoLo1 byte1 byte2bytes2bytes2 bytesExample:write value 16#000D in word W9001 (16#2329)in slave 2 (ACC=13 s).Request and response02062329000D9270