Schneider Electric VW3 A3 303 user manual Before you begin

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1. Before you begin

Read and understand these instructions before performing any procedure with this drive.

DANGER

HAZARDOUS VOLTAGE

•Read and understand the Installation Manual before installing or operating the Altivar 71 drive. Installation, adjustment, repair, and maintenance must be performed by qualified personnel.

•The user is responsible for compliance with all international and national electrical standards in force concerning protective grounding of all equipment.

•Many parts of this variable speed drive, including the printed circuit boards, operate at the line voltage. DO NOT TOUCH. Use only electrically insulated tools.

•DO NOT touch unshielded components or terminal strip screw connections with voltage present.

•DO NOT short across terminals PA/+ and PC/- or across the DC bus capacitors.

•Install and close all covers before applying power or starting and stopping the drive.

•Before servicing the variable speed drive

-Disconnect all power.

-Place a “DO NOT TURN ON” label on the variable speed drive disconnect.

-Lock the disconnect in the open position.

•Disconnect all power including external control power that may be present before servicing the drive. WAIT 15 MINUTES to allow the DC bus capacitors to discharge. Then follow the DC bus voltage measurement procedure given in the installation manual to verify that the DC voltage is less than 45 VDC. The drive LEDs are not accurate indicators of the absence of DC bus voltage.

Electric shock will result in death or serious injury.

CAUTION

EQUIPMENT DAMAGE

Do not operate or install any drive that appears damaged.

Failure to follow these instructions can result in equipment damage.

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Contents Altivar Contents Electric shock will result in death or serious injury Before you beginCommunication Parameters Manual Installation ManualDocumentation structure Programming ManualIntroduction PresentationNotation Hardware description Hardware setupInstalling the card in the drive ReceiptSwitch coding Choosing polarizationCoding the address 1234 AddressConnecting to the bus Wiring recommendationsModbus RS485 standard Connection via RJ45 wiring system Connection accessoriesConnection cables TSX SCP CM Connection cables for the masterType of master Master interface Description Catalog number TWD XCA RJ030Cables Connection via junction boxesDescription Catalog Number Subscriber socket RS485 double shielded twisted pairTSX P ACC TSX CSA500Communication parameters ConfigurationParameter Value Comment Control CommandControl via Modbus in I/O profile Control via Modbus or the terminals in I/O profileControl via Modbus or the terminals in Drivecom profile Control via Modbus in Drivecom profileConfiguration COM. Scanner Input Example of configuration via the graphic display terminalCommunication scanner RDY NETCOM. Fault Management Communication faultsFormat Range Terminal display CONFIG. COMM. MAPMonitored parameters FormatGreen RUN Red ERR Meaning Corrective action DiagnosticsChecking the address LEDsCOM Scan Output MAP CMD. Word Image RUN NETCommunication MAP COM. Scanner Input MAPInput variable Scanner parameter Output variable Scanner parameterCOM Scan Output MAP Card fault Communication faultModbus protocol PrincipleSlave Slave j Slave k Slave address Function code Data RTU modeAscii mode ModesModbus functions available Read Holding/Input Registers 3/4Code Modbus name Description Broadcast Size of data Write Single Register Diagnostics Write Multiple Registers 16 = 16#10 Get Comm Event Counter 11 = 16#0BRead/Write Multiple Registers 23 = 16#17 Machine Read Device Identification 43 = 16#2BMEI Example of positive responseOutput variables Logic address Default assignment Input variables Logic address Default assignmentCode Modbus name Description Size of data Input variable address Logic address Default value Parameter Logic ReadParameter Logic Value Parameter assigned Output controlParameter assigned Input monitoringCode Error code Exception responsesResponse Logic address Parameter Value Read non-existent or protected parametersRS485 standard AppendixMaster Modbus 2-wire standard schematicModbus 4-wire standard schematic Uni-Telway schematic Type of trunk cable Cable with 1 shielded twisted pair Wire Jbus schematicCreating a Modbus bus using non-standard equipment Different scenariosRecommendations Example Calculating the polarizationSUB-D RS485 schematic for the cardCard connector pinout Contact no. SignalAtv71ModbusJbusENV1 2005-05