BA458C Flow batch controller - BEKA Associates

Hazardous areaBA458CSafe areaBA458CFlow batchcontrollerPower supply24VIntrinsically safe for usein all gas hazardous areasPulse or4/20mAoutputfromflowmeterGalvanic isolatorsor Zener barriersu Easy to useFlowFlowmeterValve 1Valve 2u Intrinsically safeATEX, FM & cFMcertification.The BA458C is an intrinsically safe secondgenerationflow batch controller thatsupersedes the successful BA350BP andBA350BC. This controller is ideal foraccurately dispensing liquids, solids orcomponents in a hazardous area and despiteits sophisticated control functions, it is veryeasy to configure and use. Carefully designeddisplay screens, annotated in English, French,or German, lead the user intuitively throughthe available options. The BA458C accepts apulse or 4/20mA analogue input andincorporates a square root extractor andsixteen point lineariser allowing use withalmost any flowmeter or sensor. Separatetotal and rate scaling factors enable thedispensed quantity and the rate of dispensingto be displayed in the same or in differentengineering units.Single or two-stage control can beperformed by the BA458C with a third outputavailable to control an additional valve orpump. To ensure maximum accuracy, overruncompensation may be selected toautomatically minimise batching errorscaused by actuator delays.The backlit display is readable in all lightingconditions. The user screen may be selectedso that the operator is only presented withessential process information. Variables thatmay be displayed include dispensed quantity,batch setpoint, rate of dispensing andcontroller status. Most of the standard displayscreens also include a bargraph showingbatch progress. A record of total productdispensed is maintained as a grand totaltogether with a history of the last ten batches.Up to nine setpoints may be pre-enteredand selected by the operator when required.To simplify selection, each setpoint may beidentified by a plain language name having upto sixteen alphanumeric characters.The three isolated outputs are individuallyconfigured as control or status outputs. If moreare required, a factory fitted option providesthree additional identical isolated outputs.Front panel push buttons allow the operatorto start and stop the batch and to reset thecontroller at the end of each cycle. Forapplications where large or remote pushbuttons are required, control may betransferred to external switches with or withoutinhibiting the front panel controls.Counting may be inhibited during a batchby closing an external contact. Thus productmay be re-cycled whilst being heated, or thebatching system may be purged withoutaffecting the quantity dispensed.Selectable automatic restart causes theBA458C batch controller to execute thebatching operation a pre-set number of times.The delay between batches may be setbetween 1 second and 24 hours, thus enablingthe controller to perform regular dosing andsampling operations.ATEX certification permits the BA458C to beinstalled in all hazardous gas areas. Themagnetic pick-off, voltage pulse and 4/20mAinputs comply with the requirements for simpleapparatus, allowing direct connection to mostcertified flowmeters. Switch contacts and awide range of certified proximity detectorsmay also be directly connected to the BA458C.All three control outputs are galvanicallyisolated and certified as separate intrinsicallysafe circuits with output parameters complyingwith the requirements for simple apparatus.This allows most certified hazardous arealoads such as valves, lamps, and sounders tobe controlled, or the output may be transferredto the safe area via a wide range of Zenerbarriers or galvanic isolators.For use in the USA and Canada the BA458Chas FM and cFM intrinsic safety andnonincendive approval.Controller configuration may be performedvia the front panel push buttons or optionalexternal switches. To prevent accidental orunauthorised adjustment, access to theconfiguration menus is restricted by anexternal security link and an optional userdefinable four digit security code.For field mounting applications the BA454Dprovides the same batching facilities but ishoused in a robust IP66 GRP enclosuresuitable for external mounting. Acomplementary range of non-certified modelsfor use in safe areas is also available.u High contrast displaywith backlight.u Pulse or 4/20mAcurrent source input.u 3 or 6 outputsu 9 selectable batchsetpoints.u IP66 front panelu 3 year guaranteewww.beka.co.uk/ba458cBEKA associates Ltd. Old Charlton Rd.Hitchin, Hertfordshire, SG5 2DA, U.K.Tel. (01462) 438301 Fax (01462) 453971e-mail sales@beka.co.uk www.beka.co.uk

SPECIFICATIONPower supplyVoltageCurrentPulse inputsSwitch contactClosedOpenMust be powered via a Zener barrier orgalvanic isolator, 11V min required betweenterminals 1 and 2.33 mA typical when powered from 24V via28V 300Ω Zener barrierLinear or via 16 point lineariserLess than 100ΩGreater than 1kΩFront panel push buttons(Control may be transferred to external switches with or withoutdisabling the front panel push buttons.)Start Energises Control 1Stop During a batch de-energises Control 1, 2 & 3causing the batch to pause.ResetResets the batch display to zero or to thebatch setpoint if the controller is countingdown.Proximity detectorMagnetic pick-offVoltage pulse (low)LowHigh2-wire NAMUR40mV peak to peak minLess than 1VGreater than 3V; 30V max.MenuProvides access to four functions if they areenabled:Select pre-entered batch setpointAdjust batch setpointView size of last 10 batchesConfiguration menuVoltage pulse (high)LowHighLess than 3VGreater than 10V; 30V max.SecurityOperator menuMay be protected by an optional four digitcode.Open collectorClosedOpenLess than 2kΩGreater than 10kΩFrequencySwitch contact 100Hz maximumAll other pulse I/P 5kHz maximum4/20mA input From current sourceFunctionLinear or root extractingVoltage drop 0.6V at 20mAAccuracy at 20°CLinear0.3 % of spanRoot extracting ±16 µA at input ±0.3 % of spanFrequency 2Hz maximumTemperature effect Less than 0.025%/°CInhibitDisplaySizeBacklight6 selectable operatorscreens showingcombinations of:Linking terminals 18 & 20 prevents inputsignal being counted.86.5 mm x 45 mm LCDGreenBatch controller statusQuantity dispensedBatch setpointRate of dispensingStatus of control outputsOutputsThree galvanically isolated solid statedc switches.On Less than 5Ω + 0.7VOffGreater than 1MΩIS parameters Ui=28V; Ii=200mA; Pi=0.85WSwitching time 0.2s maxControl 1Outputs 2 & 3 maybe configured as:Closes when start button is operated andopens when dispensed quantity equals thebatch setpoint.Control 2 or Control 3 (parameters for eachare separately adjustable)Closes a pre-set time after Control 1closes and open a pre-set dispensedquantity before the dispensed quantityequals the batch setpoint.Flow alarmCloses when the rate of dispensing fallsbelow a pre-set value. Also causes batchcontroller to pause.Reset statusCloses when controller is reset and openswhen batch is started.Batch statusOpens when batch is started and closeswhen batch is complete.Pulse outputScaled number of pulses proportional toquantity dispensed. Frequency 4 Hz max.Configuration menus Protected by external link or switch, plusoptional four digit code.Intrinsic safetyEurope ATEXCode Group II Category 1G Ex ia IIC T5 Ga(Tamb = -40°C to 60°C)Cert. No. ITS03ATEX21379XSpecial condition only apply for installationsin Zone 0Location Zone 0, 1 or 2USA FMStandardCodeHOW TO ORDERModel numberAccessoriesOutputs 4, 5 & 6Tag strip3610 EntityCL I; Div 1; GP A, B, C DT4; Ta = 60°CStandard 3611 NonincendiveCode CL I; Div 2GP A, B, C & DT4; Ta = 60°CFile 3033262Canada cFMFile3033262CEnvironmentalOperating temp -20 to 60°C (certified for use at -40°C)Storage temp -40 to 85°CHumidity To 95% @ 40°CEnclosureFront IP66, rear IP20EMC In accordance with EU Directive 2004/108/ECImmunity No error for 10V/m field strength between150kHz and 1GHz.Emissions Complies with the requirements for Class Bequipment.MechanicalTerminalsWeightAccessoriesAdditional outputsTag numberSee page 148 for enclosure & terminaldetailsRemovable with screw clamp for 0.5 to1.5mm ² cable.0.7 kgThree programmable outputs having thesame specification as outputs 2 & 3.Thermally printed strip on rear of instrument.Please specifyBA458CPlease specify if requiredAdditional 3 outputsLegend

DIMENSIONS (mm) TERMINAL DESCRIPTIONSCaseFor earthing the enclosurePanel cut-outRecommended panel cut-outDIN 43 700138.0 +1.0/ -0.0 x 68.0 +0.7/ -0.0To achieve an IP65 seal betweenthe instrument and the panel136.0 +0.5/-0.0 x 66.2 +0.5/-0.0Four panel mounting clips mustbe used1 +Power supply2 –11 + Proximity detector, switch Input12 – contact or open collector A13 + High voltage14 + Low voltage Input15 mV (Magnetic pick-off) B16 – Common for input B17 + 4/20mAonly one inputmay be used18 Common for links19 Configure security link20 Inhibit input linkExternalsLinks144BA458CDISPLAY72 10 84S1StartS2StopS3 Reset ExternalS4 Menu SwitchesS5Do not useS6Do not useS7Common for switchesCaseA1 +A2 –For earthing the enclosureControl 1A3 +Output 2A4 – Outputs 2 and 3 may each beconfigured to have one of sixA5 + functionsOutput 3A6 –TERMINAL CONNECTIONSA7 +A8 –A9 +A10 –A11 +A12 –Output 4Output 5Output 6If fitted optional outputs 4, 5 and6 may each be configured tohave one of six functions.A7 A8 X A9 A10 A11A12+ – + – + –Optionaloutput 4Optionaloutput 5Optionaloutput 611 12 X 13 14 15 16 17 18 19 20+ – + + +A1 A2 X A3 A4 A5 A6+ – + – + –Control 1Output 2 Output 3CaseCaseContactProximity det.Open collectorHi VLo VmVCommon4/20mA +CommonSecurityInhibitInput BExternallinksInput A1 2+ –PowerS1 S2 S3 S4StartStopResetMenuX X S7Common‘X’ Do not useExternal switches7