LX Series Programmable VAV Controller Product Bulletin1The LX Series Programmable VAV controller (LX-VAVCF) uses the latest technology to provide more flexibility and reliability. The programmable Variable Air Volume (VAV) controller can be programmed very easily using Facility Explorer. The controller features a drift-free differential pressure sensor that resists loss of accuracy over time due to dust particle accumulation.The LX-VAVCF controller uses the LonTalk® communication protocol. Figure 1: LX-VAV ControllerTable 1: Features and BenefitsFeaturesBenefitsSoftwareFeatures 18 Network Variable Inputs (NVIs) and Network Variable Outputs (NVOs) with changeable types and lengths, supports fan-in binding for zoning applications, and all objects (programming, schedule, real-time clock) are configurable through their own wizard.HardwareAllows you to use any commercially available thermistor type (100 ohm to 100 k ohm) and setpoint potentiometer type. Features an extremely accurate on-board airflow sensor for pressure independent single duct VAV applications. Can read differential pressure as small as 0.04 milli-inches of water.Robust Communications ProtocolComplies with LONWORKS technology for interoperability and peer-to-peer communication between controllers without the necessity of intermediary agents. Free Programmable ObjectAllows you to view all internal points using 10 UNVT and 15 values of each object. The LX-VAVCF controller offers many programming tools like Proportional plus Integral plus Derivative (PID), timers, and optimum start.LX Series Programmable VAV ControllerProduct BulletinCode No. LIT-12011490Issued June 22, 2009LX Series Programmable VAV Controller Product Bulletin2LX-VAVCF Controller OverviewThe LX-VAVCF controller uses the free programmable wizard, which allows you to easily use the graphical interface with the power and flexibility of a code editor and compiler. Johnson Controls® Free Programmable Wizard uses a unique and simplified version of Beginner's All-Purpose Symbolic Instruction Code (BASIC) that is custom-made to suit any control requirements. Through the original combination of built-in functions and an easy to use Graphical User Interface (GUI), the LX-VAVCF controller offers you the very best in modular control programming.Software WizardsThe wizards simplify complex programming and sequencing methods by prompting users for the necessary configuration data.Free Programmable WizardThe Free Programmable Wizard is unique in the Controls industry because it combines an easy to use graphical interface with the power and flexibility of a code editor and complier. New built-in commands have been added in the LX Series LX-VAVCF models of Free Programmable controllers, like the Square Root (SQRT) function that calculates the square root of a value. Selection Chart Repair InformationIf the LX-VAVCF controller fails to operate within its specifications, replace the unit. For a replacement, contact the nearest Johnson Controls® representative.Figure 2: Dimensions, mm (in.)Table 2: Selection ChartCode NumberDescriptionLX-VAVCF-1Programmable VAV controller, actuator w/feedback, flow sensor, 10 I/O (4 Universal Inputs [UIs], 4 triac Digital Outputs [DOs], 2 Universal Outputs [UOs]) and wizard.LX Series Programmable VAV Controller Product Bulletin 3LONMARK Objects and Network VariablesFigure3 shows the LX-VAVCF LONMARK Objects and Network Variables. Figure 3: LONMARK Objects and Network Variables--LX-VAVCFLX-VAV / LX-VVT NodeObject Type #0nvoObjStatusSNVT_obj_statusConfiguration PropertiesLocation(optional)Device Major Version Device Minor Version nviObjRequestSNVT_obj_requestMandatoryNetworkVariablesOptionalNetworkVariablesManufacturer Configuration PropertiesMaximum Send TimenviFileReqSNVT_file_reqnvoFileStatSNVT_file_statusnviFilePosSNVT_file_posnviTimeSetSNVT_time_stampLX-VAV/LX-VVT FreeProgObject Type #20100Manufacturer Configuration PropertiesObject Major VersionObject Minor VersionAssociated File IndexMaximum Send TimeMinimum Send Timefp Valid IO TypeObject OptionsManufacturerNetworkVariablesnviModifUNVT_modify_internal_valnviFP_xx (xx=7-16)SNVT_xxx(changeable type)nvoModUNVT_mode_internal_valConfiguration Properties (for nvi’s & nvo’s) nviFP_xx (xx=17-18)SNVT_xxx(changeable type)nvoFP_xx (xx=5-18)SNVT_xxx(changeable type)Configuration Properties for nviFP_17, nviFP_18Maximum Receive Scan TimeWeight Average Parameter Weight Average maximum In OffsetFree Programmable Internal PointsFan In SupportnvoC1_25UNVT_const1to25nvoV46_50_C1_10UNVT_internal_var_46to50_const_1to10nvoV1_15nvoV16_30UNVT_internal_var_16to30nvoV31_45UNVT_internal_var_31to45LX-VAV / LX-VVT HardwareObject Type #1nvoFP_xx (xx=01-04)SNVT_xxx_(changeable type)Configuration PropertiesNvTypeMaximum Send TimeMinimum Send TimeMandatoryNetworkVariablesLX-VAV/LX-VVT Hardware OutputObject Type #3nviFP_xx(xx=01-06)SNVT_xxx(changeable type)Configuration PropertiesNvTypeMandatoryNetworkVariables4 HW Input Objects6 HW Output ObjectsScheduling InputsnviSchedule1SNVT_xxx(changeable type)nviSchedule2SNVT_xxx(changeable type)nviSchedule3SNVT_xxx(changeable type)nviSchedule4SNVT_xxxnvoTimeDateHardware Info (optional)(optional)(optional)NvTypeNvTypeUNVT_internal_var_1to15nvoC26_40nvoC41_50nvoI1_12nvo01_12UNVT_const26to40UNVT_const41to50UNVT_inputSNVT_outputUNVT_CO_1to10_OS_1to4nvoCO1_10_OS1_4nvoT1_15UNVT_timer_1to15SNVT_time_stamp(polled only)(changeable type)LX Series Programmable VAV Controller Product Bulletin4Technical Specifications LX-VAVCF Product CodeLX-VAVCF-1Power RequirementsVoltage: 24 VAC/DC; ±15%, 50/60 Hz, Class 2Protection: 3A removable fuse for triac when using the internal power supplyConsumption: 5 VAMaximum Consumption: 10 VA (normal), or 85 VA if internal power supply is used for triac (special application)Ambient ConditionsAmbient Operating Temperature: 0 to 70°C, (32 to 158°F)Ambient Storage Temperature: -20 to 70°C, (-4 to 158°F)Ambient Storage Conditions: 0 to 90% noncondensingGeneralProcessor: Neuron® 3150®, 8 bits, 10 MHzMemory: Non-volatile Flash 128k (storage) (APB application, Non-volatile Flash 64k (APB application)Media Channel: TP/FT-10, 78 KbpsCommunication: LonTalk® protocolTransceiver: Echelon® FTT-10Enclosure (Housing)Material: FR/ABS ResinDimensions (with screws): 4.88 x 8.9 x 2.48 in. (124 x 226 x 63 mm)Shipping Weight: 2.30 lb (1.05 kg)InputsQuantity: 4 universal software configurableInput Types: Digital: Dry Contact, Analog Voltage: 0 to 10 VDC, Accuracy: ±0.5%,Analog current: 4 to 20 mA with 249 ohm external resistorResistor Support:Thermistor: 100 ohm (PT100), 1 K (RTD I K Type 85), 10 K (Type, 2, Type 3),Range: -40 to 125°C, (-40 to 257°F)Accuracy: ±0.5°C, ±0.9°FResolution: 0.1 to 0.18°F (10K ohm to 10K ohm supported using translation table)Potentiometer:10k ohms or 100K ohm, translation table (21 points)Differential: Range 0-250 Pa (0-1 in. H20)Pressure Sensor (VAV model only): Resolution 0.04 milli-inches H20, Accuracy ±0.3% full scaleInput Resolution: 16-bit analog/digital converterHardware OutputsQuantity: 6 Hardware4 Digital: Triac 0.75 A at 24 VAC, External or Internal power supply2 Universal: 0-10 VDC linear, digital 0-10 VDC linear, digital 0-12 VDC(Analog or Digital) or PWM 20 mA max, Maximum load 600 ohm Output Resolution: 10-bit digital/analog converterDamper ActuatorTorque: 35 in·lb, 4 N·mAngle of Rotation: 95° adjustableFits Shaft Diameter: 5/16 to 3/4 in. (8.5 to 18.2 mm)Power Supply: from controllerThe performance specifications are nominal and conform to acceptable industry standard. For application at conditions beyond these specifications, consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products.Published in U.S.A.www.johnsoncontrols.comLX Series Programmable VAV Controller Product Bulletin 5Johnson Controls® is a registered trademarks of Johnson Controls, Inc.All other marks herein are the marks of their respective owners. © 2009 Johnson Controls, Inc.Building Efficiency507 E. Michigan Street, Milwaukee, WI 53202United States Emissions ComplianceThis equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when this equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his/her own expense.RF Transmitters: Compliance Statement (Part 15.19)This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:1. This device may not cause harmful interference, and2. This device must accept any interference received, including interference that may cause undesired operation.Warning (Part 15.21)Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.Canadian Emissions ComplianceThis Class (A) digital apparatus meets all the requirements of the Canadian Interference-Causing Equipment Regulations.Cet appareil numérique de la Classe (A) respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.RF Transmitters: Industry Canada StatementThe term IC before the certification/registration number only signifies that the Industry Canada technical specifications were met.Le terme « IC » précédant le numéro d'accréditation/inscription signifie simplement que le produit est conforme aux spécifications techniques d'Industry Canada.Next >