variable air volume modular assembly (vma) 1200 series

Technical BulletinIssue Date July 1, 2003

© 2003 Johnson Controls, Inc. www.johnsoncontrols.comCode No. LIT-1162350 M-Tool Release 5.3

Variable Air Volume Modular Assembly (VMA) 1200 SeriesOverview and Engineering Guidelines

VMA1200 Series Overview and Engineering Guide ...........................3

Introduction......................................................................................................... 3

Key Concepts...................................................................................................... 4

VMA1200 Series Models................................................................................................... 4Definition of Terms ............................................................................................................6Theory of Operation .......................................................................................................... 9Establish Zones............................................................................................................... 12Room Sensor Placement ................................................................................................ 12Pressure Independent VMA ............................................................................................ 13VMA Airflow Rate ............................................................................................................ 13Power Source.................................................................................................................. 14LONWORKS Network Topology ........................................................................................ 17Inputs and Outputs.......................................................................................................... 19CablePRO .......................................................................................................................21CVTPRO .........................................................................................................................21Software Tools ................................................................................................................ 21Related Documentation................................................................................................... 22

Procedure Overview......................................................................................... 23

Detailed Procedures......................................................................................... 24

Determining VAV Box Requirements .............................................................................. 24Establishing the Room Schedule .................................................................................... 25Developing Bills of Material and Placing Orders ............................................................. 26Configuring the VMA ....................................................................................................... 27

Appendix A: Reference Information ..................................................28

Introduction....................................................................................................... 28

VMA Wiring List............................................................................................................... 29

Variable Air Volume Modular Assembly (VMA) 1200 Series Overview Technical Bulletin2

VMA Wiring Interface Diagram........................................................................................ 31VMA Parts List ................................................................................................................ 32FCC Part 15 Label .......................................................................................................... 33VMA Specifications ......................................................................................................... 34Fabricating Your Own Interconnection Cable ................................................................. 39Sensor Interface.............................................................................................................. 40

Appendix B: Application Example .....................................................43Single Duct Application Example .................................................................................... 43

Variable Air Volume Modular Assembly (VMA) 1200 Series Overview Technical Bulletin 3

VMA1200 Series Overview andEngineering Guide

IntroductionThe Variable Air Volume Modular Assembly (VMA) 1200 Series is aconfigurable, integrated module that includes a Variable Air Volume(VAV) controller, actuator, and differential pressure sensor. The VMAhas two models: cooling only and cooling with reheat. The models,which use the LonTalk® protocol, are designed for pressureindependent, single duct systems. The reheat model can be used withparallel or series fan powered boxes.

This manual is a reference tool for engineering VMA1200 installationsand applications. It is also a training tool to learn about theVMA1200 Series controllers. It is task oriented for easy reference tospecific tasks. Refer to the appendixes at the end of this document forwiring tables and diagrams, a parts list, specifications, and anapplication example.

This document describes how to:

• determine VAV box requirements

• establish the room schedule

• develop bills of material and place orders

• configure the VMA


Key ConceptsVMA1200 Series Models

Table 1 lists VMA1200 Series features. Table 2 shows availableVMA1200 models.

Table 1: Feature ChecklistVMA Features CommentsApplicationsPattern Recognition Adaptive Control (PRAC)on Zone Proportional Plus Integral (PI)Temperature Loops

Eliminates manual tuning and seasonal retuning.

Adaptive Flow Control Loops No manual tuning, improved control and energy savingsSingle Duct, Pressure Independent VAV Meets most VAV applications.Side Loops without Interlocking Single Analog Input (AI) to Analog Output (AO)/Binary

Output (BO)Fan Powered Boxes Series or parallelIncremental, Proportional, and Three Stages ofBox Heat

Up to three stages or normally open/closed valves

Incremental, Proportional Two Position, orOne Stage Supplemental Heat

Normally open or closed valves

Damper ActuatorClockwise (CW)/Counterclockwise (CCW)Rotation Selection

Set via M-Pro software, VMA1200 Balancing Tool (VBT)software, or network management tool for either directionto close.

Software/ToolsAbility to Download Code Firmware Firmware code is upgradeable without removing the VMA.DiagnosticsMoving Average Flow/Temperature Diagnostic Provides standard measure of control loop performance

over time.Actuator Duty Cycle Diagnostic Indicates shaft slippage.CommissioningBalancing Tool with Automatic K-factorCalculation

Palm compatible handheld device (Version 2.0 or lateroperating system) on Zone Bus

Hardware24 VAC Isolation Eliminates 24 to 24 VAC transformer and polarity concerns.Multiple VMAs Powered by a 100 VATransformer

Up to 14 cooling only. Number of reheat/fan units dependson power consumption of valve/fan relays.

Isolated Communication, Binary Outputs, and24 VAC

Saves installed cost and improved electrical noiserejection.

Ability to Drive Low Current Relays Down to25 mA

Eliminates relay chatter.

13-Bit Analog Input/8-Bit Analog OutputResolution

High accuracy and good device control

Analog Input Jumpers Eliminated All analog inputs are preset reducing labor.Continued on next page . . .


VMA Features (Cont.) CommentsDifferential Pressure TransducerDead Ended Transducer No filters or maintenance required.Capacitive Technology Improved stabilityIndustry Accepted Flow Measurement Accuracy Even for flows below 250 fpm (1.25 m/s) typicalTemperature SensorsVariety of Sensors Nickel, 1 K platinum, 2.25 K NTCTemporary Occupied Button On TMZ1600, TE-6700, TE-7000 (Europe only) Series

room sensorsTemporary Occupied Light-Emitting Diode(LED)

On TMZ1600, TE-6700, TE-7000 (Europe only) Seriesroom sensors for Occupied and Unoccupied modes

LED Indicator for OperationPower/Communication

Verifies operation and power connections.

PhysicalSmall, One Piece Assembly102 x 153 x 102 mm (4 x 6 x 4 in.)

Prewired to reduce installed cost.

Plenum Plastic Housing Rating UL 94-5VB plenum flammability may eliminate metal box(check local codes).

Removable Input/Output (I/O) Screw Terminals Two or three position accessory kitsNode InstallationService Pin Message Local pushbutton and remote access from Palm compatible

handheld deviceWink Function Initiate via Palm compatible handheld device or network

management tool.Bar Code Label Two removable bar code labels printed with Neuron® ID


Table 2: VMA1200 Series ModelsInputs/Outputs Points Rating VMA1210

(CoolingOnly)

VMA1220(Coolingw/Reheat)

Analog Inputs:Zone TemperatureZone SetpointHumidity, Dewpoint, or SideloopDischarge Air TemperatureVelocity Pressure

AI-1AI-2AI-3AI-4

Internal

1 K Ni or 1 K Pt or 2.25 K NTC1.6 K ohm Potentiometer (Pot.)0-10 VDC1 K Ni or 1 K Pt or 2.25 K NTC

0-1.5 inch W.C. (0-374 Pa)Binary Inputs:Temporary Occupied/Standby/Room Sensor LEDOccupiedOff or Window or Shutdown

BI-1

BI-2BI-3

Dry contact

Dry contactDry contact

Analog Outputs:Proportional Heat AO-1 0-10 VDC @ 10 mABinary Outputs:FanBox Heat--Incremental Valve or1-3-stage ElectricSupplemental Heat--IncrementalValve or 1-3-stage Electric

BO-1 toBO-5

24 VAC triac @ 0.5 A

Actuator Motor Internal

Definition of TermsAuto Calibration The VMA has an Auto Calibration mode that runs periodically toadjust the pressure sensor calibration due to offset tolerance andmounting position.

BindingA process performed by a network management tool that connectsNetwork Variable Outputs (NVOs) and Network Variable Inputs(NVIs). These connections provide for peer-to-peer data transfers.

Commissioning Verification of controller inputs and outputs and modification of thecontroller configuration properties to meet installation specifications.

Configuration PropertiesData stored in non-volatile memory (Flash) in the controller that isaccessible from a network management tool.


Configuring Building an application within the controller to establish the requiredcontrol sequence, setting the functionality of the controller.

Downloading Writing the Heating, Ventilating, and Air Conditioning (HVAC)application data and configuration properties to the controller. This isaccomplished using a software tool with a Personal Computer (PC).

LONWORKS® Network Services (LNS®) ProtocolNetwork management system protocol for LONWORKS devices.

LONWORKS FTT-10A Transceiver The Free Topology Transceiver (FTT) interface between theVMA1200 and the physical network.

M-ProA software tool used to configure and download controllers.M-Pro software is part of the System Tools in M-Tool.

Neuron MicroprocessorThe microprocessor used in the VMA. Each neuron has a unique48-bit ID for node identification.

NVI/NVOLONMARK® term for Network Variable Inputs/Outputs. Thesevariables may be read/written by network management tools. Theymay be bound to other network variables in a system.

Palm Compatible Handheld DeviceA handheld computer that uses software to configure and balance theVMA1200. The Palm Pilot unit is an example of this device.

SCPT/UCPTLONMARK terms for Standard Configuration Property Type and UserConfiguration Property Type.

SNVT/UNVTLONMARK term for Standard/User Network Variable Types.A SNVT/UNVT defines the units, structure, and resolution of theconfiguration properties, NVIs and NVOs.


Test and Balance (TAB) Test and Balance (TAB) is a function performed to ensure the installedsystem operates to design specifications. Balancing of the VMA zoneindicates whether the VAV terminal box achieves minimum/maximumairflow settings. TAB must also be performed for the air handler andthe air duct distribution to the VAV box.

Variable Air Volume (VAV) ControllerAn Application Specific Controller (ASC) used for digital control ofsingle duct, dual duct, fan powered, and supply/exhaust VAV boxapplications.

Variable Air Volume Modular Assembly (VMA)Includes a digital controller with integrated pressure transducer andactuator.

Zone BusA local interface between the controller and the room sensor. Byconnecting a Palm compatible handheld device with the propersoftware to the CablePRO or CVTPROx00-0 and room sensor, theZone Bus allows you to monitor and commission directly through theroom sensor.


Theory of Operation VAV systems are most easily understood by considering them ascooling applications. As the zone temperature increases due to heatproduced by people, computers, or other heat sources, the VMA opensthe VAV box damper and lets cooler air in. The size of the space andthe internal and external heat loads dictate the volume of air requiredto maintain a zone temperature setpoint. In addition, since the size ofthe VAV box dictates its maximum cooling capacity, VAV boxperformance is dependent upon the design engineer sizing the box foreach zone. If the installed unit is too small, insufficient cooling results,and excessive flow rates cause audible noise. If the installed unit is toolarge, proper control is difficult to maintain, since a small change indamper position causes excessive airflow change. Boxes aresometimes oversized to ensure quiet operation or to reserve coolingcapacity as zone usage changes.

A cooling only VAV system maintains a constant zone temperaturewhile varying the flow of air to the space. This is unlike a constantvolume system that maintains a constant volume of airflow to thespace but varies the temperature of the air stream in response to spacetemperature changes. VAV systems are predominantly single duct, butsome are dual duct designs. The VMA can be configured for mostsingle duct pressure independent VAV applications. The M-Prosoftware (part of M-Tool Release 2.0) is used to configure anddownload VMA1200 applications.

The actuator drives the damper from full open to full closed in90 seconds. The VMA incorporates flow feedback to accuratelyposition the damper and to minimize position hunting and motorruntime. Control performance metrics are recorded and are availablevia network variables to the Metasys® Operator Workstation (OWS).Figure 1 shows the VMA1200 in the Metasys Network. Figure 2 is afunctional block diagram of the VMA1200.


Operator Workstation(with OWS, M-Pro, and LNS Software)

Network Control Module (NCM)

N1 LAN

RoomSensor

VMA1200

ZoneBus

FTT-10

Palm Compatible Handheld Device

MNET

L WNetwork Bus

ON ORKS

CablePROConverter

L WCompatible

Devices

ON ORKS

RoomSensor

ZoneBus

Palm Compatible Handheld Device

CVTPROConverter

VMA1200

Figure 1: VMA1200 Controllers in Metasys Network Diagram


Neuron ApplicationProcessor

FTT-10Interface

COP8IO Processor

Fblock2

Digital Inputs

x3

AnalogInputs

x5

PhoneJack

ZoneBus

AnalogOutput

x1

TriacOutputs

x7

Window Open

Occupancy Sensor

Temp Occ Button

Hi

Low

Space Temperature

Space Setpoint

Auxiliary Temperature

Auxiliary 0-10V

TE-6700, TMZ1600, orPalm Compatible Handheld Device

Heating Valve

Five 24 VAC Outputs for Fan, Staged Heating, etc.

L W NetworkON ORKS

Isolated

CW CCW

Differential Pressure

(DP) Sensor

ActuatorMotor

Figure 2: VMA1200 Functional Block Diagram


Establish Zones When designing VMA systems, establishing zones correctly is criticalto take maximum advantage of the VMA’s exceptional accuracy andrapid response capabilities.

The designer strives for the most uniform indoor environmentalconditions possible. A single thermostatic device (room sensor)controls each area. A zone could also be thought of as an area wherethe load is considered the same for every square foot of floor space.

HVAC system zones fall into two major categories: exterior zones andinterior zones. Exterior zones are spaces directly affected by outdoorweather conditions. Heat losses or outdoor air conditions do notinfluence interior zones. Interior zones usually have cooling orventilation requirements only.

Further divisions of interior/exterior zones may be required toaccommodate different occupancy schedules and/or solar loads.Variations in internal loading dictate the selection of separate zones.For example, in a restaurant the kitchen has vastly different heatingand cooling requirements from the seating area.

Room Sensor Placement Consider room sensor placement for each zone, making sure to:

• Verify that the room sensor is the correct one for the application.

• Review architectural requirements such as furniture height andlocation, aesthetics, and type of mounting. Wall plates are requiredif mounting on a conduit handibox.

• Review room sensor location. The best room sensor location is onan interior wall, about five feet above the floor, out of directsunlight, out of the direct path of supply air from the diffuser, awayfrom heat sources, such as equipment, machines, and perimeterradiation, and away from doors and other draft sources. Mountingheight may be affected by local codes or the accessibility needs ofpersons with disabilities.

• Do not locate a sensor near zone boundaries where primaryinfluence is from an adjacent zone.


Pressure Independent VMA The pressure independent VMA employs patented self-tuning,cascaded proportional/integral control loops. The zone temperatureloop samples space temperature and resets the airflow setpointbetween the minimum and maximum flow settings. Since inlet ductstatic pressure influences the amount of air passing through theVAV box, the VMA airflow loop samples airflow via a flow pickup inthe box inlet. It modulates the damper to control the flow. Thus, theVAV box flow is independent of duct static pressure.

The engineering basis for this method of control is that the temperatureof a space with a constant load is linearly proportional to the flow ofconditioned air into the space. The engineer must accurately determinethe required maximum and minimum flow for each space based onheating, cooling, and ventilation loads.

VMA Airflow Rate The VMA determines airflow rate by dynamic pressure measurement.The VMA contains a Differential Pressure Transmitter (DPT) to sensedifferential pressure in pressure independent VAV applications.

The DPT is connected to the VAV box airflow pickups. It measuresdifferential pressure and generates a proportional voltage signal. Thevoltage signal from the DPT is read by the VMA and converted toairflow in cubic feet per minute (cfm) or liters per second.

The DPT provides maintenance-free performance within the controlrange of 1.25 to 18 m/s (250 to 3500 feet per minute [fpm]) when usedas recommended.

The minimum 1.25 m/s (250 fpm) velocity and the gain of the airflowpickup produce an accurately measured pressure difference.

The VMA Auto Calibration function helps reduce the temperatureeffect error by zeroing offset errors. As the ambient temperatureswings relative to the temperature at which the Auto Calibrationoccurred, an offset error may occur (typically ±0.179 Pa/°C[±0.0004 inch W.C./°F]). When calibration occurs, this error becomeszero.

The error envelope becomes smaller with increased airflow pickupgain and with smaller ambient temperature deviations at thetransmitter location.


Power SourceYou can use one 24 VAC power trunk to power multiple VMAs. Inthis case, transformers of up to 100 VA are centrally located, and thesecondary run is without conduit and without concern about polarity.

Notes: The 24 V power transformer must be UL/CSA listed asNEC Class 2 Power Limited.

See NEC Article 725/Class 2 (30 VRMS maximum) and(100 VA maximum).

The VMA1210 draws 7 VA including the internal damper actuator.Therefore, 14 VMAs can be powered from one 100 VA transformerwithout conduit. The number of VMA1220s is dependent on thebinary output loads and reheat actuators. The reheat actuators must beadded to the 7 VA of the controller, then divided into the 100 VAtransformer power. For example, the VMA1220 draws 7 VA withoutloads. If there were only a single VA-8020 reheat valve per VMA, its4 VA must be added to the VMA for a total of 11 VA. Thennine VMA/VA8020s can be powered from one 100 VA transformer.

Table 3 shows the power rating for several cooling/heating coil valveactuators. The valve power plus the VMA power must not exceed100 VA. If a device is not listed in the following table, refer to theproduct literature for that device.

Table 3: Actuator VA Power RatingActuator Type Power RatingVA-8020 Incremental 4 VAVA-8050 Incremental 6 VAVA-7200 Incremental 6.7 VAJ Series Electric Zone Valve On Off 7 VAVA-8022 Voltage (0 to 10 VDC) 4 VAVA-8052 Voltage (0 to 10 VDC) 6 VAVA-7202 Voltage (0 to 10 VDC) 6.7 VAVA-7450 Incremental 2.5 VAVA-7452 Voltage (0 to 10 VDC) 2.5 VAVA-7050 Thermal (DAO) 3 VAVA-7310 Incremental 2 VAVA-7312 Voltage (0 to 10 VDC) 2 VAVA-7010 On/Off 7 VAVA-7150 Incremental 2.7 VAVA-7152 Voltage (0 to 10 VDC) 4.7 VA


When using a single transformer and running 24 VAC to multipleVMAs, use a wire gauge large enough for the load. The voltage dropon the 24 VAC cabling is much higher than for line voltage wiring forthe same power draw. For a 100 VA (equivalent to 100 watt) load at120 VAC, only 0.8 ampere is required. However, at 24 VAC, overfour amperes are needed. Current draw determines the wire size.

Two connection methods are available. In the first method, individualspade lugs accept a single 10 to 22 American Wire Gauge(AWG)/4 mm2 to 0.8 mm wire and still fit on 6 mm (1/4 inch) tabs. Inthe second method, optional screw terminals are assembled over thespade lugs. The screw terminals accept up to a single 12 AWG(4 mm2) wire or two 14 AWG (2.5 mm2) wires. When two wires arecrimped into one spade lug, a larger spade lug barrel is needed.Alternately, a wire nut can connect two heavy wires to a short 152 mm(6 inch) thinner wire.

24 VAC100 VA

< 88 ft of 14 AWG >

Example 1: All VMAs are at one end.

VMA

VMA

VMA

VMA

VMA

VMA

VMA

VMA

VMA

VMA

VMA

VMA

VMA

VMA

VMA

24 VAC

< 176 ft of 14 AWG >

Example 2: Transformer is centered.

VM

A

VM

A

VM

A

VM

A

VM

A

VM

A

VM

A

VM

A

VM

A

VM

A

VM

A

VM

A

VM

A

VM

A

VM

A

100 VA

< 176 ft of 14 AWG >

Cablelength

Figure 3: Power Cable Lengths A standard 14 AWG (2.5 mm2) wire (top example in Figure 3) islimited to 27 m (88 feet) with 14 cooling only VMAs when the VMAsare all located at one end of the cable. If the transformer is centered(bottom example in above figure) with seven VMAs on the left andseven VMAs on the right, the distance in each direction can beincreased. This is because the current (and voltage drop) are halved ineach direction. In this example, both the left and the right legs can beincreased to 54 m (176 feet) from the transformer, creating a 108 m(352 foot) total length.


Table 4 and Table 5 indicate the relationship between wire length andpower at the end of wires.

Table 4: Maximum Wire Length for Given Power/Gauge (U.S. Measurements)Wire Size

8 Gauge 10 Gauge 12 Gauge 14 Gauge 16 Gauge 18 GaugePower (VA) atEnd of Wire

Wire Length (Feet)

10 3520 2200 1400 880 550 35020 1760 1110 700 440 275 17530 1173 740 467 293 183 11740 880 555 350 220 138 8850 704 444 280 176 110 7060 587 370 233 147 92 5870 503 317 200 126 79 5080 440 278 175 110 69 4490 391 247 156 98 61 39100 352 222 140 88 55 35

Table 5: Maximum Wire Length for Given Power/ Wire Gauge (MetricMeasurements)

Wire Size4 mm2 2.5 mm2 1.5 mm2

Power (VA) atEnd of Wire

Wire Length (Meters)

10 427 268 16820 213 134 8430 142 89 5640 107 67 4250 85 54 3460 71 45 2870 61 38 2480 53 34 2190 48 30 19100 43 27 17


LONWORKS Network Topology The LONWORKS FTT-10A used by the VMA1200 supports freenetwork topologies. Table 6 describes free topologies, and Figures 4and 5 show supported topologies. For more information, see theLONWORKS Network Layout Technical Bulletin (LIT-1162150).

Table 6: Free TopologiesCategory Free TopologyArchitecture Bus, star, ring, or mixedTermination Single termination for star, ring, or mixed

Double termination for busConnection Connected by stub/multi-drop.

Free Topology (Tree or Star)

L W Compatible Device (Including NCM350/361)

ON ORKS

Legend:

Free_TopFree Topology Terminator

Figure 4: Free Topology


L W Compatible Device (Including NCM350/361)

ON ORKS

Bus End-of-Line (EOL) Terminator

Daisy-chained TopologyBus

Stub-wired TopologyBus

Legend:

Bus_Top

Figure 5: Bus TopologyTable 7 contains a specification example for the FTT-10A Transceiver.This is just one example of the many available wiring styles. For morecomplete information, refer to Echelon® CorporationLONWORKS FTT-10A Transceiver User’s Guide.

Table 7: FTT-10A Transceiver Specification ExampleTransceiver FTT-10/FTT-10ATopology FreeBit Rate 78 kbpsMaximum Node to Node Distance 500 m (1640 ft)*Maximum Total Wire Length 500 m (1640 ft)*Maximum Nodes 64Node Application Current NA

* Belden® 85102, 8471 Cable


Inputs and Outputs For specific input/output range, wire length, wire size issues, refer tothe VMA Wiring List in Appendix A: Reference Information at the endof this document.

Note: All terminals are spade lug type except the LONWORKSNetwork Bus terminals, which are removable screw terminals.Optional two or three position kits can be ordered to convert the spadelugs to removable screw terminals. See Table 12.

Binary InputsThere are three dry contact binary inputs on the VMA1200. A manualoverride button on the room sensor initiates a Temporary Occupancymode of operation. The TE-6700 room sensor includes an LED inseries with the button to show the occupancy mode. The switch can bepushed for as little as 0.2 seconds to detect a change.

The binary inputs on the VMA are inactive when open. They areactive when a contact closure to binary input common (COM) isapplied.

Binary Outputs The VMA has zero (VMA1210) or five (VMA1220) user accessiblebinary outputs. The damper actuator is wired internal to the VMA.Each load is connected between the BO terminal and BCOM commonterminal. When required to meet codes, the 24 VAC terminal of theVMA/transformer can be earth grounded. In this situation, the binaryoutputs switch the transformer’s low side to the relays and actuators.

Analog Outputs There is one analog output on the VMA1220. The VMA1210 has noanalog outputs. The load is connected between the analog output andanalog output common (COM) terminals. The output is controlled togenerate a proportional voltage output of 0 to 10 VDC. The maximumload for each output is 10 mA with a minimum load resistance of1000 ohms.


Analog Inputs There are two external and one internal analog inputs on theVMA1210 and four external and one internal analog inputs on theVMA1220. They are preset for either temperature, setpoint, or voltage.There are no jumpers to set. Shielding is not required, but if used, earthground the shield only at the VMA. You may use 24 AWG (0.6 mm)twisted pair wire; however, this reduces the allowable wire length dueto the resistance. To minimize sensor error caused by field wiring, thetotal resistance of the nickel or platinum resistive sensor wiring shouldbe less than 3 ohms. The NTC sensor accepts a larger wire resistance.This wiring error effect is corrected through configuration propertiesusing a commissioning tool.

Do not share the temperature or setpoint common wire with voltage orcurrent transmitters on the Zone Bus. The maximum voltage drop onthe common wire must be less than 1 mV.

Zone Bus The Zone Bus is a 2-wire local communications bus that allows aPalm compatible handheld device with Johnson Controls® VMA1200Balancing Tool (VBT) software to commission and balance the VMA.The Zone Bus connector also provides 15 VDC power to theCablePRO or CVTPRO. The bus sustains no damage in the presenceof fault voltages of 15 VDC or 24 VAC.

Table 8: Zone Bus SpecificationsType Multi-drop serial communications busSpeed 1200 baud (bits per second)Recommended Cable Type 1.5 mm2 (18 AWG) with or without shield

(Belden 8760) or0.6 mm (24 AWG) without shield (unshieldedtelephone cable)

Maximum Bus Length 150 meters (500 feet) with 1.5 mm2 (18 AWG)cable or15 meters (50 feet) with 0.6 mm (24 AWG)cable

VoltagesLogic High VoltageLogic Low Voltage

4 VDC minimum (approximately)1 VDC maximum (approximately)

Data Transmission 1 Start Bit (low level)8 Data Bits (least significant bit first)1 Stop Bit (high level)

Isolation Isolated from 24 VAC, Binary Outputs (BO),and LONWORKS Network Bus


CablePRO CablePRO (AS-CBLPRO) is an interface device used between aPalm compatible handheld device and the VMA. It is used for boxbalancing or commissioning via the Zone Bus communication port.

When used with a VMA, the CablePRO is strictly an electricalinterface between the serial RS-232 port of the Palm compatiblehandheld device and the Zone Bus. CablePRO operates on 15 VDC,drawn from a VMA through the Zone Bus phone jack. The data rate onboth the RS-232 and the Zone Bus is 1200 baud.

The connection to the RS-232 COM port of the Palm compatiblehandheld device is by means of a DB9 or DB25 connector suppliedwith the CablePRO.

Refer to the Auxiliary Gear Technical Bulletin (LIT-6363080) formore information on the CablePRO.

CVTPRO CVTPRO (AS-CVTPROx00-0) is a Zone Bus/N2 interface device thatis used between a Palm compatible handheld device and the VMA. Itis used for box balancing or commissioning via the Zone Buscommunication port.

When used with a VMA, the CVTPRO is strictly an electrical interfacebetween the serial RS-232 port of the Palm compatible handhelddevice and the Zone Bus. CablePRO operates on 15 VDC, drawn froma VMA through the Zone Bus phone jack. The data rate on both theRS-232 and the Zone Bus is 1200 baud.

Refer to the Auxiliary Gear Technical Bulletin (LIT-6363080) formore information on the CVTPRO.

Software ToolsM-Tool software tools allow you to commission, configure, andbalance the VMA1200. Use M-Pro software to configure anddownload applications. The VMA1200 Balancing Tool (VBT)software allows you to balance and perform limited commissioning.The Comm Pro commissioning tool performs commissioningoperations, such as reading and writing network variables andconfiguration properties or downloading new firmware to thecontroller.

In addition, a number of third-party network management tools(e.g., LonMaker™ software) allow you to read/write network variablesand configuration properties and bind network variables. See Table 13in Appendix A: Reference Information for additional software details.


Related Documentation Table 9 lists related VMA1200 documentation.

Table 9: Related DocumentationFor Information on This Use This Document:Sales and Marketinginformation

VMA1200 Series Controller Product Bulletin (LIT-1162300)

Installing the VMA VMA1200 Installation Bulletin, Part No. 24-9310-5 (Packed with product)Downloading andCommissioning Details

Downloading and Commissioning VMA1200 Series Controllers TechnicalBulletin (LIT-1162370)Comm Pro User’s Guide

Mounting and WiringInformation

Mounting and Wiring VMA1200 Series Controllers Technical Bulletin(LIT-1162360)

Troubleshooting VMA1200 Troubleshooting VMA1200 Series Controllers Technical Bulletin (LIT-1162380)Configuring the VMA1200 M-Pro User’s Guide

Variable Air Volume Modular Assembly (VMA) 1200 Series ControllersApplication Note (LIT-1162500)

Balancing the VMA1200 Using the VMA1200 Balancing Tool (VBT) Software Technical Bulletin(LIT-1162400)

Working with LONWORKSNetworks and Devices

LONWORKS Network Layout Technical Bulletin (LIT-1162150) and LONWORKSCompatible Devices Supported by NCM350 Technical Bulletin (LIT-1162100).


Procedure OverviewTable 10: Engineering the VMA Procedure OverviewTo Do This Follow These Steps:Determine VAV BoxRequirements

Select the VMA.Establish sensor placement in zones.Coordinate and authorize mounting.

Establish the Room Schedule Develop application configuration files.Determine control strategy.Select room sensors.Create source power drawings.Determine quantity needed of all components.

Develop Bills of Material andPlace Orders

Make sure all items are included.Coordinate parts ordering and delivery.

Configure the VMA Reference appropriate room schedules.Select control sequences using M-Pro.Create configuration files.Archive and document applications.Download applications.


Detailed Procedures Determining VAV Box Requirements

To determine VAV box requirements:

1. Select the VMA based on control sequence, Input/Output (I/O),side loops, and flow measurement accuracy requirements forsingle duct boxes. Refer to the discussion of VMA Airflow Rate inthe Key Concepts section of this document.

2. Establish sensor placement in zones.

3. Contact box manufacturer’s representative to authorize mountingor mount on site.

Notes: Damper shafts must protrude 44 mm (1-3/4 in.) or morefrom the box. The VMA accommodates damper shafts greater than 44mm (1-3/4 in.) in length from the box exit.

Shaft bushings may interfere with flat mounting of the VMA. Ifneeded, use a spacer to keep the VMA parallel to the mountingsurface.

Consider the following:

• project install date

• plans and specifications

• wiring diagrams and specifications to box manufacturer

• who does what including: mounting, connecting, downloading,testing, and shipping

• who provides which parts including: control enclosure andtransformer

4. Coordinate field or factory mounting.


Establishing the Room ScheduleTo establish the room schedule:

1. Develop application configuration files based on projectrequirements.

For flow calculation constants, refer to the Variable Air VolumeModular Assembly (VMA) 1200 Series Controllers ApplicationNote (LIT-1162500).

2. Determine control strategy.

Note: The VMA1200 is for single duct applications only. Use otherstandard Johnson Controls VAV controllers for dual duct andsupply/exhaust applications.

3. Select appropriate room sensors based on project specifications.Typically, each VMA requires a room sensor.

4. Create source power drawings. Determine such things as linelength, transformer count and layout, and power distribution.

5. Determine number of:

• VMAs

• other control devices

• room sensors

• valves

• valve actuators

• transformers

• phone cables

• accessories such as screw terminal kits


Developing Bills of Material and Placing OrdersTo write up the bill of material and place orders:

1. Make sure the following items are included as required:

• valves

• valve actuators

• room sensors (one per VMA)

• VMAs

• cables

• transformers

• box fan speed controllers - for information about theJohnson Controls S66 Series Electronic Fan Speed Control,refer to the S66 Series Electronic Fan Speed ControlProduct/Technical Bulletin (LIT-121605).

Notes: The differential pressure sensor and the damper actuator areincluded as part of the VMA.

Room sensors cannot be hardwired/shared between VMAs; however,sensors may be shared by connecting network variables using aLONMARK network management tool.

2. Coordinate parts ordering and delivery, including:

• placing orders through Johnson Controls Customer Service

• determining shipping destinations

• coordinating VMA manufacturing and delivery issues

• coordinating box manufacturer issues

• coordinating boxes with VMAs delivered to job

• determining status of software, documentation, and drawings

Note: The VMA can be shipped in individual packages or bulkshipped (maximum ten VMAs per box).


Configuring the VMAConfigure the VMA as specified in room schedules.

To configure the VMA:

1. Refer to the appropriate room schedule for room specifications.

2. Select control sequences using M-Pro software. Refer to theM-Pro User’s Guide.

3. Create individual configuration files for each device or each set ofsimilar devices.

4. Archive and document the applications and VMA configurationas needed. Downloading can be performed through theLONWORKS Network Bus.

Refer to the M-Pro User’s Guide for additional configurationinformation.


Appendix A: ReferenceInformation

IntroductionThe following tables are to be used for wiring, parts, and specificationreference.


VMA Wiring List

Table 11 provides a wiring list for the VMA1200. Figure 6 highlightsthe electronic isolation of the VMA1200.

Note: All field terminals are power limited when powered by aClass 2 transformer.

Table 11: VMA Wiring ListPoint Description Range Input or

LoadImpedance

MaximumVoltage

MaximumCurrent

Wire Size in mm2 or mm(AWG)

CableLengthinMeters(Feet)

1.5 mm2 (18) 150 (500)AI-1* ZoneTemperature

1 K ohmNickel,or Pt

10 K ohm 5 VDC 0.5 mA

0.6 mm (24) 30 (100)

2.25 K ohmNTC

10 K ohm 5 VDC 0.5 mA 0.6 mm to1.5 mm2

(24 to 18)

150 (500)

1.5 mm2 (18) 150 (500)AI-2* ZoneSetpoint

1.6 K ohm2-wire Pot.

10 K ohm 5 VDC 0.5 mA0.6 mm (24) 30 (100)

AI-3* HumidityTransmitteror CO2Sensor

0-10 VDC 1.1 M ohm 16.5 VDC 15 uA 0.6 mm to1.5 mm2

(24 to 18)

150 (500)

1.5 mm2 (18) 150 (500)AI-4* 1 K ohmNickel,or Pt

10 K ohm 5 VDC 0.5 mA

0.6 mm (24) 30 (100)

Discharge AirTemperature

2.25 K ohmNTC


(24 to 18)

150 (500)

AI-5* VelocityPressure(internal)

0 to 1.75 in.W.C./0.5 to2.0 VDC

100 K ohm 5 VDC 20 uA NA Internal

1.5 mm2 (18) 150 (500)BI-1* TemporaryOccupied

0-5 VDC,3 V trigger

440 ohm 5 VDC 10 mA0.6 mm (24) 30 (100)

BI-2* Comfort(occupied)

0-15 VDC,2.5 Vtrigger


(24 to 18)

150 (500)

BI-3* Window, Off(shutdown)

0-15 VDC,2.5 Vtrigger


(24 to 18)

150 (500)

1.5 mm2 (18) 150 (500)AO-1* ProportionalHeat/Humidity FanSpeed

0-10 VDC 1 K-10 Mohm

10 VDC 10 mA

0.6 mm (24) 60 (200)

* Isolated from 24 VACContinued on next page . . .


Point(Cont.)

Description Range Input orLoadImpedance

MaximumVoltage

MaximumCurrent

Wire Size in mm2 or mm(AWG)

CableLengthinMeters(Feet)

BO-1,2,3,4,5^

Fan, Box/SupplementalHeat, ElectricHeat,Lighting

24 VAC @25-500 mA

48-1000 ohm 30 VAC 100 mA100 mA500 mA500 mA

1.5 mm2 (18)0.6 mm (24)1.5 mm2 (18)0.6 mm (24)

150 (500)30 (100)30 (100)6 (20)

AM-1^ Actuatormotor(internal)

24 VAC4 VA

144 ohm 30 VAC 100 mA NA Internal

NetworkBus*^

NetworkingBus

±5 Vtransmit,±0.2 Vreceive

200 ohm line 5 VDC 100 mA 0.6 mm to1.5 mm2

(24 to 18)

See+

0 to 5 V >3000 ohm 5 VDC 100 mA 1.5 mm2 (18) 150 (500)ZoneBus*

Local RoomSensor Bus 0.6 mm (24) 30 (100)

RoomSensorCable*

AI-1, AI-2,BI-1, ZoneBus, and+15 VDC

See above. 0.6 mm (24)eight conductorphone cable

7.5 (25)15 (50)22.5 (75)30 (100)

1.5 mm2 (18) 150 (500)+15VDC*

DC OutputSupply

14-18 VDC 1 K-10 Mohm

18 VDC 35 mA0.6 mm (24) 60 (200)6 mm2 (10) 67 (222)~

6 mm2 (12) 42 (140)~

2.5 mm2 (14) 27 (88)~

1.5 mm2 (16) 17 (55)~

24 VACPowerIn^

AC SupplyVoltage

22-30 VAC 12-48 ohm 30 VAC 0.3 ampereforVMA1210;1.3 ampereforVMA1220 1.5 mm2 (18) 11 (35)~

Notes:* Isolated from 24 VAC^ Isolated from AI, BI, AO, Zone Bus, 15 VDC+ See LONWORKS Network Layout Technical Bulletin (LIT-1162150).~ Length using 100 VA

AI BI

AO ZB

Microprocessor+15 VDC

Power Supply

L WON ORKSCommunications

Circuit

24 VAC, Motor,

BO

Isolation

VMA1200

Figure 6: VMA Electronic Isolation


VMA Wiring Interface Diagram

(18)

BI-1

(20)

BI-2

(21)

CO

M(2

2) B

I-3(2

3) C

OM

(24)

+15

VD

C*

(25)

+15

VD

C(2

6) A

I-1(2

7) C

OM

(28)

AI-2

(29)

CO

M(3

0) A

I-3*

(31)

CO

M*

(32)

AI-4

*(3

3) C

OM

*(3

4) Z

B+

Prim

ary

24 V

AC

Cla

ss 2

Ener

gy L

imite

dTr

ansf

orm

er**

3-w

ire

2-w

ire P

ropo

rtion

alVa

lve

Actu

ator

Set

Scr

ewH

I(R

ed)

Scre

w N

umbe

rs

Fan

Rel

ay

6 5 1 2 4 7

Cou

pler

Ope

nC

lose

3-w

ireO

pen

BCO

M(1

) 24

VA

C(2

) 24

VA

C(3

) E

arth

Gnd

.(O

ptio

nal)

(4)

BO

-1*

(5)

BC

OM

*(6

) B

O-2

*(7

) B

CO

M*

(8)

BO

-3*

(9)

BC

OM

*(1

0) B

O-4

*(1

1) B

CO

M*

(12)

BO

-5*

(13)

BC

OM

*(1

4) A

O-1

*(1

5) C

OM

*

24-1

8 AW

G(0

.8 m

m -

1.5

mm

2 )To L

WN

etw

ork

Bus

ON

OR

KSTo

Nex

t

Com

patib

le

Dev

ice

LON

WO

RKS

LO

Red

LED

Gre

en

LED

SHLD

Des

crip

tion

LED

Col

or

Incl

uded

on

VMA

1220

Onl

y.S

afet

y Is

olat

ion

Tran

sfor

mer

in E

urop

e* **

Earth

Gro

und

CO

M

CW

End

Sto

p

3

Con

trolle

r ope

ratin

g pr

oper

lyTh

e ne

twor

k ta

ble

is n

ot c

onfig

ured

. U

se C

omm

Pro

or a

Net

wor

k M

anag

emen

t too

l to

conf

igur

e th

e co

ntro

ller.

Res

pons

e to

Win

k co

mm

and

from

V

BT, C

omm

Pro

, or L

NS

tool

Con

trolle

r pro

blem

D

ownl

oad

new

firm

war

e.A

pplic

atio

n is

runn

ing

norm

ally,

LE

D b

links

at o

ne s

econ

d in

terv

al.

App

licat

ion

is n

ot ru

nnin

g. C

heck

th

e po

wer

and

dow

nloa

d a

new

ap

plic

atio

n. R

epla

ce th

e un

it if

nece

ssar

y.

Off

Blin

king

3 Bl

inks

then

Off

On

On

Off

Blin

king

Red

(S

ervi

ce)

Gre

en

(Run

ning

)

Pne

umat

ic T

ubin

g(D

iffer

entia

l pre

ssur

e)

TB2-

7

TB2-

8TB

1-3

TB1-

4TB

1-2

TB2-

5

8TB

1-1

TE-6

700*

**TE

-700

0 (E

urop

e O

nly)

(35)

CO

M

TB2-

6

120

VAC

-277

VAC

Stat

e

CC

WEn

d S

top

*** P

refe

rred

DIP

Sw

itch

O N

1 2

3Po

sitio

n fo

r TE

-670

0

I ncr

emen

tal

Valv

eAc

tuat

or

LON BLON A

Clo

se

(19)

CO

M

Hea

tBa

sebo

ard

Figure 7: VMA Wiring Interface


VMA Parts ListTable 12 lists hardware accessories. Table 13 lists softwarerequirements and options.

Table 12: Hardware Accessories (Order Separately)Transformer AS-XFR050 AS-XFR100 Y63 through Y66 SeriesScrew Terminal Kit AP-TBK1002-0 Removable 2-position screw terminal kit (100 pcs)*

AP-TBK1003-0 Removable 3-position screw terminal kit (100 pcs)*AP-TBK3COMM-0 Replacement LONWORKS Network Bus 3-position

screw terminal kit (10 pcs)* These terminals fit over the existing I/O spade lugs.

Room Sensors TMZ-1600, TE-6700, TE-7000 (Europe only)8-pin Room SensorCommunication Cables

See the Room Sensor with LCD Display (TMZ1600) InstallationInstructions (LIT-6363110) and the TE-6700 Series 2nd GenerationTemperature Elements Product Bulletin (LIT-216331) for information onroom sensor accessories.

Electronic Fan Speed Controller S66AA-1C or S66DC-1C. See S66 Series Electronic Fan SpeedControl Product/Technical Bulletin (LIT-121605) for specifications.

Handheld Interface(for Balancing Tool software)

Palm compatible handheld device (Version 2.0 or later operatingsystem). See Using the VMA1200 Balancing Tool (VBT) SoftwareTechnical Bulletin (LIT-1162400) for more information on devicecompatibility.

Converter (for HandheldInterface)

AS-CBLPRO-2 or AS-CVTPROx00-0

Interface Accessories (forConverter)

Required for AS-CBLPRO-2 only: Palm V Travel Kit cable (for thePalm V) or Palm HotSync® cable (for all other Palm models),DB9M/DB9F Null Modem Adapter, DB9M/DB9M Gender Changer.

Table 13: SoftwareItem CommentsMicrosoft® Windows® 95,Windows 98, or Windows NT®software

Platform

VMA1200 Balancing Tool (VBT) Used for Balancing. Part of M-Tool.M-Pro software (Required for Configuration.) Can be used as a plug-in with third-party

network management tools or standalone. Part of M-Tool.Comm Pro Commissioning Tool Can be used to commission a VMA1200 controller. Part of M-Tool.LONWORKS Network Services(LNS) Network Management Tool(Optional)

Use a network management tool (for example, LonMaker software) forcommissioning tasks.


FCC Part 15 LabelThis equipment has been tested and found to comply with the limitsfor a Class A digital device pursuant to Part 15 of FederalCommunications Commission (FCC) rules. These limits are designedto provide reasonable protection against harmful interference whenthis equipment is operated in a commercial environment. Thisequipment 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 ofthis equipment in a residential area is likely to cause harmfulinterference, in which case the user will be required to correct theinterference at his/her own expense.

This device complies with Part 15 of the FCC rules. Operation issubject to the following two conditions:

1. This device may not cause harmful interference.

2. This device must accept any interference that may cause undesiredoperation.

This Class A and B digital apparatus meets all requirements of theCanadian Interference-Causing Equipment Regulations.


VMA SpecificationsTable 14: Basic VMA SpecificationsProduct Name Variable Air Volume Modular Assembly (VMA)Product Code Number AP-VMA1210-0 (cooling only) or AP-VMA1220-0 (cooling with reheat/fan)Supply Voltage 20 to 30 VAC at 50 or 60 HzOptional Fuse Current 0.3 ampere for VMA1210, 1.3 ampere for a VMA1220 fully loadedPower Consumption 7 VA maximum (relay and valve requirements not included)Ambient OperatingConditions

0 to 50°C (32 to 122°F)10 to 90% RH noncondensing, limited by a 30°C (86°F) maximum dewpoint

Ambient StorageConditions

-40 to 70°C (-40 to 158°F)

Terminations 6.3 mm (1/4 inch) spade lugs. (Communications has removable screwterminals included.)

Optional Terminations 2 or 3 position screw terminals that plug into spade lugs (accessories)Network Interfaces LONWORKS Network Bus and Zone BusLONWORKS ControllerAddressing

Unique 48-bit ID

CommunicationsProtocols

LONWORKS Network Bus between VMA controller and NCM (2-wire)Zone Bus between VMA controller and room sensor (8 pin phone jack or wireto spade lugs)

Mounting One screw mounts the VMA to the VAV box.One screw attaches damper shaft to the actuator 8 mm (5/16 inch) squarehead set screw with 44 N.m (375 lb.in) of axial holding torque for up to 13 mm(1/2 inch) round damper shafts.Minimum damper shaft length is 44.5 mm (1 3/4 inch).

Housing Plastic housing for controller, sensor and actuator with UL 94-5V PlenumFlammability Rating

Dimensions (L x W x H) 152.4 x 101.6 x 101.6 mm (6 x 4 x 4 inch)Actuator Rating 4 N.m (35 lb.in) minimumShipping Weight 13.1 kg (29 lb) for a box of ten; 1.3 kg (2.8 lb) eachElectrical Inputs Analog Inputs: (Input configurations vary based on model type)

- Nickel (1 K ohm Johnson Controls), or Platinum (1 K ohm DIN 385)or NTC (2.25 K ohm Fenwal®) room sensors

- 1.6 K ohm setpoint potentiometer (2-wire)- Voltage Input for 0 to 10 VDC (humidity, dewpoint sensor, or

sideloop)Binary Inputs: dry contacts

Combination contact input w/LED driver for temporary occupancy on TE-6700

Velocity Pressure Velocity Pressure for 0 to 436 Pascal (0 to 1.75 inch W.C.)Outputs No outputs on AP-VMA1210-0, except internal damper actuator

Binary Outputs: 24 VAC triac switched; 25 to 500 mA loadsDamper Actuator: 90° rotation in 90 secondsAnalog Output: 0 to 10 VDC at 10 mA

Continued on next page . . .


Product Name (Cont.) Variable Air Volume Modular Assembly (VMA)Standards Compliance CSA 22.2 No. 205

UL 916 UL 864 (UUKL) UL 94-5VBFCC Part 15, Subpart B, Class A and BCISPR 22, Residential Class BCE Directive (89/336/EEC, EN50081/1, EN50082/2) Industrial and ResidentialIEEE 472 ANSI C62.41 A/B (IEEE 587 Category A/B)C-tick Australia/NZ, AS/NZS 4251.1IEC 950 IEC 1000-4, -2, -3, -4, -5, -6Refer to the Metasys Smoke Control Wiring Technical Bulletin (LIT-636331)for details on smoke control compliance requirements.


All specifications are for the VMA controller pressure sensor andactuator only, measured at the midpoint of each range within 90 daysof calibration at room temperature.

Table 15: Additional Detailed VMA SpecificationsPower InputVoltage Range 20 to 30 VAC; 50 or 60 HzInput Current 0.3 ampere without relays or valvesTransient Protection Control circuitry is transformer isolated from input power.

Common and Normal mode capacitorLONWORKS NetworkBus CommunicationsBus Type and Voltage FTT-10A, 2.5 V differential signalBus Speed 78 K BaudTransient Protection Transformer isolated from 24 VAC, BOs, AI, BI, AO, ZBus, +15 VDC;

Spark gaps, series blocking capacitors, clamping diodes, transformerZone BusCommunicationsBus Type and Voltage Single-ended 5 VDCBus Speed 1200 BaudTransient Protection Isolated from 24 VAC, BOs, and LONWORKS communications circuit;

PTC+Transorb; Common mode capacitorsMicroprocessor/MemoryMicroprocessor Neuron 3150® processor operating at 10 MHzMemory 56 K byte FlashDC Supply OutputVoltage Range 14 to 18 VDCLoad Current 0 to 35 mAOverload and TransientProtection

Current Foldback; Isolated from 24 VAC, BOs, and LONWORKScommunications circuit; Common mode capacitors

Pressure Input (AI-5)Range 0 to 435 Pascal (0 to 1.75 inch W.C.)Proof Pressure 6895 Pascal (1 psi)Burst Pressure 68940 Pascal (10 psi)Resolution 0.0234 Pascal (0.000094 inch W.C.)Non-repeatability andHysteresis

±0.187 Pascal (±0.00075 inch W.C. maximum)

Non-linearity (Best Fit) ±2 Pascal (±0.008 inch W.C. maximum) for 0 to 249 Pa (0 to 1 inch W.C.)±3 Pascal (±0.012 inch W.C. maximum) above 249 Pa (>1 inch W.C.)

Thermal Effect on Zero* ±0.179 Pascal per degree C (±0.0004 inch W.C. per degree F maximum)Thermal Effect on Span ±0.179 Pascal per degree C (±0.0004 inch W.C. per degree F maximum)Position Effect on Zero* ±0.623 Pascal (±0.0025 inch W.C. maximum)Position Effect on Full Span ±0.623 Pascal (±0.0025 inch W.C. maximum)Long Term Zero Drift* ±2.49 Pascal per year (±0.01 inch W.C. per year maximum)Long Term Span Drift ±2.49 Pascal per year (±0.01 inch W.C. per year maximum)Sample Time One secondContinued on next page . . .


Additional Detailed VMA Specifications (Cont.)Temperature Inputs(AI-1, AI-2, AI-4)

(AP-VMA1220 only for AI-4)

Range NTC: 0 to 40°C (32 to 104°F)Platinum: 0 to 40°C (32 to 104°F)Nickel: 0 to 40°C (32 to 104°F)Setpoint: 18 to 30°C (65 to 85°F)

Resolution (13 bit) NTC: 0.0028°C (0.0050°F)Platinum: 0.0589°C (0.1060°F)Nickel: 0.0430°C (0.0774°F)Setpoint: 0.0015°C (0. 0027°F)

Non-repeatability andHysteresis (estimate)

NTC: ±0.009°C (±0.016°F) maximumPlatinum: ±0.189°C (±0.340°F)Nickel: ±0.138°C (±0.248°F)Setpoint:±0.005°C (±0.009°F) maximum

Measurement Accuracy NTC: ±0.03°C (±0.05°F) maximumPlatinum: ±0.68°C (±1.23°F) maximumNickel: ±0.50°C (±0.90°F) maximumSetpoint: ±0.15°C (±0.27°F) maximum

Thermal Tolerance ±0.020% per °C (±0.036% per °F) maximumLong Term Drift ±0.07% per year maximumSample Time One secondTransient Protection Isolated from 24 VAC, BOs, and LONWORKS communications circuit;

Normal mode RC; Common mode capacitorsTemporary OccupiedResponse Time (AI-1)

100 mS

Voltage Input (AI-3) (AP-VMA1220 only)Range 0 to 10.0 VDC (0 to 2000 PPM CO2)Resolution (13 bit) 0.750 mV (0.15 PPM CO2)Non-repeatability andHysteresis (estimate)

±0.012 V maximum (±2.4 PPM CO2)

Measurement Accuracy ±75 mV maximum (±15 PPM CO2)Thermal Tolerance ±0.028% per °C (±0.050% per °F) maximumLong Term Drift ±0.7% per year maximumSample Time One secondTransient Protection Isolated from 24 VAC, BOs, and LONWORKS communications circuit;

Normal mode RC; Common mode capacitorsBinary InputsVoltage Range andTrigger Level

BI-1: 0 to 5 VDC with 3.1 VDC thresholdBI-2 and BI-3: 0 to 5 VDC with 2.5 VDC threshold

Sample Time 50 mS pulse width (10 Hz maximum)Transient Protection Isolated from 24 VAC, BOs, and LONWORKS communications circuit

Normal mode RC; Common mode capacitorsContinued on next page . . .


Additional Specifications (Cont.)Analog Output (AO-1) (AP-VMA1220 only)Voltage Range 0 to 10 VDCLoad Current 0 to 10 mAVoltage Resolution (8 bit) 0.04 VDCLinearity and Hysteresis ±0.04 VDC maximumVoltage Accuracy ±3% full scaleThermal Tolerance ±0.005% per °C (±0.009% per °F) maximumLong Term Drift ±0.7% per year maximumTime Constant one second (seven seconds for steady state)Transient Protection Isolated from 24 VAC, BOs, and LONWORKS communications circuit;

Common mode capacitorsBinary Outputs(BO-1 through BO-5)

(AP-VMA1220 only)

Voltage Range 20 to 30 VACLoad Current 25 to 500 mATime Constant 50 mSTransient Protection Isolated from AI, BI, AO, ZBus, +15 VDC, and LONWORKS communications

circuit; Common mode capacitors; Normal mode capacitors and resistorsMotor ActuatorOutputRated Running Torque 4 N⋅m (35 lb⋅in) minimumUnpowered HoldingTorque

5.1 N⋅m (45 lb⋅in) minimum

Stall Torque 9.1 N⋅m (80 lb⋅in) maximumStroke 93±3 degrees maximumAngular Velocity 1 degree per second nominalFull Stroke Life 100,000 cycles minimumReposition Stroke Life 2,500,000 cycles minimumReposition Accuracy ±1 degree maximumAcoustic Noise 30 dBA at one meter maximum

* Use the Auto Calibration function to correct. Specifications are deemed accurate but are subject to change.


Fabricating Your Own Interconnection CableYou must construct any fabricated interconnection cable, so the samecolor wire on both ends of the cable align with Pin 1 in the plug. Thisprovides a consistent field assembly of the cable. Figure 8 illustratesthe interconnection cable.

Phone Connectors(Clip Side Out)

TE-6700 Room SensorPhone Plug

VMA1200Controller

Phone Plug

Cblfab_1

1 2 3 4 5 6 7 8

12345678

BI-1

AI-2

AI-1

AI-1

CO

M+1

5 VD

CZB

CO

MAI

CO

MZB

+

Figure 8: Interconnection CableNote: This is not typical of preassembled phone cable purchased inretail stores. A telephone system cable is wired opposite of the ZoneSensor requirements.


Sensor InterfaceFigures 9, 10, and 11 show interfaces between room sensors and theVMA1200. For more information on the TE-6700 room sensor(including Dual Inline Package [DIP] switch settings), see theTE-6700 Series 2nd Generation Temperature Elements InstallationBulletin (LIT-216332).

1

2

3

4

5

6

7

8

1

2

3

4

5

6

BI-1

AI-2 (Setpoint)

AI-1 (Zone Temperature)

AI COM

+15 Volts DC

+15/Zone Bus COM (Not BCOM)

AI-COM

Zone Bus/N3+

Sensor

1.6K ohmSetpoint Potentiometer

6-pin Phone Jack on TE-6700

+15 Volts DC

Zone Bus

COM

8-pin Phone Jack on TE-6700

Screw Terminals

TE6X

4

1

2

5

6

3

7

LED*

ManualOverride

1K ohm

8

Figure 9: TE-6700 Phone Jack Interface to VMA1200


1

8

4

5

AI1AI

COMAI

COM AI2

ZB+ COM 15 VDC

screw term

(18) BI-1*(19) COM(20) BI-2(21) COM(22) BI-3(23) COM(24) +15 VDC(25) +15 VDC(26) AI-1(27) COM(28) AI-2(29) COM(30) AI-3(31) COM(32) AI-4(33) COM(34) ZB+(35) ZB-

VMA

BI-1

Preferred DIP Switch Position for TE-6700

O N

1 2 3

Figure 10: TE-6700 Interface to VMA1200 (Terminal Block)


TE7000

(18) BI-1(19) COM(20) BI-2(21) COM(22) BI-3(23) COM(24) +15 VDC(25) +15 VDC(26) AI-1(27) COM(28) AI-2(29) COM(30) AI-3(31) COM(32) AI-4(33) COM(34) ZB+(35) ZB-

VMA

TE-7000 (Europe Only) Terminal Blocks (TBs)

TB1 TB21 2 3 4 5 6 7 8

Figure 11: TE-7000 (Europe Only) Interface to VMA1200 (Terminal Blocks)Note: The IU-9100 converter is not compatible with theVMA1200 Zone Bus.


Appendix B: Application Example

This example is provided as a basic overview of wiring locations youmight expect to see. It does not define all applications available or all ofthe possible questions and answers. For more information on VMA1200applications, see the Variable Air Volume Modular Assembly (VMA)1200 Series Controllers Application Note (LIT-1162500).

Single Duct Application ExampleTable 16: Single Duct Application Example Questions

M-Pro Questions Configuration SelectionsVAV Box Type Pressure IndependentFan Type (R1) Series/On-OffBaseboard Heat Type NoneBox Heat Type (HTG) 2-stages

Note: The Original Equipment Manufacturer (OEM) box manufacturertypically supplies the fan relays and electric heat relays.

C1 TE1

Plenum

Supply Discharge

DPT1 DA1

HTG

R1

R2

Sample1

R3

Figure 12: Single Duct Application Example Mechanical Flow Diagram


Table 17: Single Duct Application Example Bill of MaterialsComponent Description Part NumberC1, DPT1, DA1 VMA AP-VMA1220-0TE1 Temperature Sensor and Setpoint TE-6700 SeriesR1 Fan *R2, R3 Reheat Relays ** Box OEM manufacturers typically furnish fan relays and electric heat relays.

(18) BI-1(19) COM(20) BI-2(21) COM(22) BI-3(23) COM(24) +15 VDC(25) +15 VDC(26) AI-1(27) COM(28) AI-2(29) COM(30) AI-3(31) COM(32) AI-4(33) COM(34) ZB+

120 VAC 24 VAC

PowerTransformer

24 VAC

LON

BLO

N A

SHLD

(1) 24 VAC(2) 24 VAC(3) Earth (4) BO-1(5) BCOM(6) BO-2(7) BCOM(8) BO3(9) BCOM(10) BO-4(11) BCOM(12) BO-5(13) BCOM(14) AO-1(15) COM

Fan Relay24 VAC

24 VACStage 1 Relay

Stage 2 Relay

R1

TE-6700

1 458

HI(Red)

LO

To Next

CompatibleDevice

L WON ORKS

(35) ZB COM

Ex1

Preferred DIP Switch Position for TE-6700

O N

1 2 3

To Next

CompatibleDevice

L WON ORKS

R2

R3

Ground

Figure 13: Single Duct Application Example Pressure Independent Configuration

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variable air volume modular assembly (vma) 1200 series

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