Schneider Electric VW3 A3 303 user manual Communication faults, COM. Fault Management

Page 19

6. Configuration

6. 4. Communication faults

A Modbus fault is triggered if the Modbus card does not receive any Modbus requests at its address within a predefined time period (time out). All Modbus request types are taken into account (read, write, etc.). The time out is fixed at 10 s (non-modifiable).

The response of the drive in the event of a Modbus communication fault can be configured.

Configuration can be performed using the graphic display terminal or integrated display terminal using the [Network fault mgt] (CLL) parameter in the [1.8 FAULT MANAGEMENT] (FLt-)menu, [COM. FAULT MANAGEMENT] (CLL-)submenu.

	RDY	NET		+0.00Hz		0A

	COM. FAULT MANAGEMENT

Network fault mgt			:			Freewheel
CANopen fault mgt			:			Freewheel
Modbus fault mgt			:			Freewheel

	Code					Quick

The values of the [Network fault mgt] (CLL) parameter, which trigger a [Com. network] (CnF) drive fault, are:

Value	Meaning

[Freewheel] (YES)	Freewheel stop (factory setting)

[Ramp stop] (rMP)	Stop on ramp

[Fast stop] (FSt)	Fast stop

[DC injection] (dCI)	DC injection stop

The values of the [Network fault mgt] (CLL) parameter, which do not trigger a drive fault, are:

	Value	Meaning

	[Ignore] (nO)	Fault ignored

	[Per STT] (Stt)	Stop according to configuration of [Type of stop] (Stt).

	[fallback spd] (LFF)	Switch to fallback speed, maintained as long as the fault is present and the run command is not disabled.

	[Spd maint.] (rLS)	The drive maintains the speed at the time the fault occurred, as long as the fault persists and the run
	[Spd maint.] (rLS)	command has not been removed.
		command has not been removed.

The fallback speed can be configured via the [Fallback speed] (LFF) parameter in the [1.8 – FAULT MANAGEMENT] (FLt-)menu.

19

Image 19

Contents Altivar Contents Electric shock will result in death or serious injury Before you beginCommunication Parameters Manual Installation ManualDocumentation structure Programming ManualPresentation IntroductionNotation Hardware description Hardware setupInstalling the card in the drive ReceiptChoosing polarization Switch codingCoding the address 1234 AddressWiring recommendations Connecting to the busModbus RS485 standard Connection accessories Connection via RJ45 wiring systemConnection 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 MAPOutput variable Scanner parameter Input variable Scanner parameterCOM Scan Output MAP Card fault Communication faultPrinciple Modbus protocolSlave Slave j Slave k Slave address Function code Data RTU modeAscii mode ModesRead Holding/Input Registers 3/4 Modbus functions availableCode 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 responseInput variables Logic address Default assignment Output variables Logic address Default assignmentCode Modbus name Description Size of data Parameter Logic Read Input variable address Logic address Default valueParameter Logic Value Parameter assigned Output controlParameter assigned Input monitoringException responses Code Error codeResponse 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 schematicDifferent scenarios Creating a Modbus bus using non-standard equipmentRecommendations Example Calculating the polarizationSUB-D RS485 schematic for the cardCard connector pinout Contact no. SignalAtv71ModbusJbusENV1 2005-05