Refer to the QuickLIT website for the most up-to-date version of this document.VA-748x Electric Valve Actuators Product Bulletin1VA-748x Series Electric Valve Actuators provide floating or proportional control in HVAC applications. The compact design of this actuator series makes it ideal for installations in confined locations, such as fan coil applications. The VA-748x Series Actuator is designed for field mounting onto the terminal unit valves made by Johnson Controls and its competitors. Due to the innovative concept of auto stroke detection, the VA-748x actuator can be installed over most of the conventional terminal unit valves in the market and pressure independent control valves with variable strokes. Figure 1: VA-748x-0312 Electric Valve ActuatorTable 1: Features and Benefits FeaturesBenefitsAuto-commissioningSimplifies installation, since models require no adjustments in the field.Auto-shutoff Actuator MotorExtends actuator life by reducing drive time and excessive motor wear.Durable, Heat-stabilized, Plastic Resin EnclosureAllows the actuator to be used in applications with fluid temperatures up to 203°F (95°C).Actuator that Can Be Mounted after the Valve Body is PipedSimplifies installation and provides application flexibility.Compact DesignAllows for installation in confined locations, such as fan coil applications.Operating Status LEDProvides direct, visual indication of the actuator operating status.Actuator That Can Be Rotated after it is Mounted on the Valve BodySimplifies installation by allowing the actuator wiring entry to be located in any direction.VA-748x Electric Valve ActuatorsProduct BulletinVA-7480-0312, VA-7482-0312VA-7482-8002-RA, VA-7482-9002-RACode No. LIT-12011893Issued January 20, 2016VA-748x Electric Valve Actuators Product Bulletin2Application OperationThe VA-748x actuators are available for use with floating and proportional controllers.24 VAC Floating Control Model (VA-7480-0312 Model)When the signal is applied to the black and red wires, the actuator stem extends. When the signal is removed, the actuator remains in position. If the signal remains applied to the red wire, the actuator times out and the motor shuts off after approximately 90 seconds (VA-7480-0312).When the signal is applied to the black and orange wires, the actuator stem retracts. When the signal is removed, the actuator remains in position. If the signal remains applied to the orange wire, the actuator times out and shuts off the motor after approximately 90 seconds (VA-7480-0312).End of Stroke ConfirmationWhen the signal is applied in the same direction, the actuator turns on every 2 hours and drives in the signal direction for approximately 90 seconds (VA-7480-0312) to confirm the end of the stroke.24 VAC/VDC Proportional Control Model (VA-7482-0312 Model)When power is applied, the actuator self-calibrates, performing a complete cycle. The actuator moves the stem down for a complete mechanical valve stroke until no changes are detected. Once the auto-zero is detected, the actuator moves the stem accordingly with the input signal within the value of the electrical stroke (0.19 in. [4.8 mm nominal]).When the input signal increases (for example, 0 V to 10 V), the actuator stem extends if the actuator is configured as direct acting (DA) or retracts if the actuator is configured as reverse acting (RA). When the input signal decreases (for example, 10 V to 0 V), the actuator stem retracts if the actuator is configured as DA or extends if the actuator is configured as RA.Auto Stroke Detection Models for Proportional Control Mode (VA-7482-8002-RA and VA-7482-9002-RA Models)The auto stroke detection series is suitable with valves having a minimum of 20 N spring preloading. When the power is applied, the actuator self-calibrates performing a complete cycle to detect the real valve stroke. The actuator moves the stem down for a complete mechanical valve stroke until no stroke changes are detected. Once the lower valve stem position is detected, the actuator moves the spindle of the actuator up until the spindle is fully retracted in the actuator. The microprocessor counts and stores the full stroke of the actuator. The actuator then drives the spindle down in order to detect the upper valve stem position and to calculate the real stroke, minus the gap value. As soon as the spindle of the actuator touches the valve stem, the actuator exits the self-calibration mode (the LED turns red and blinks) and enters the operational mode (the LED turns green).When the input signal increases (for example, from 0 V to 10 V), the actuator is configured as Direct Action (DA). The actuator retracts if the actuator is configured as Reverse Action (RA).When the input signal decreases (for example, from 10 V to 0 V), the actuator stem retracts if the actuator is configured as Direct Action (DA). The actuator extends if the actuator is configured as Reverse Action (RA). End of Stroke Confirmation VA-7482-0312 ModelWhen the signal is 0 or 100%, the actuator turns on every 2 hours and drives in the signal direction for approximately 60 seconds to confirm the end of the stroke.VA-7482-8002-RA and VA-7482-9002-RA ModelsWhen the input signal remains at 100% for one hour, the actuator turns on the motor and drives the spindle for approximately 60 seconds to confirm the end of the stroke.IMPORTANT:Use the VA-748x Electric Valve Actuators to control equipment under normal operating conditions. Where failure or malfunction of the electric valve actuators could lead to personal injury or property damage to the controlled equipment or other property, additional precautions must be designed into the control system. Incorporate and maintain other devices, such as supervisory or alarm systems or safety or limit controls, intended to warn of or protect against failure or malfunction of the electric valve actuators.VA-748x Electric Valve Actuators Product Bulletin3Operating Status IndicatorsThe floating models are equipped with a green LED that provides information about the operating status.The proportional models are equipped with a bi-color green/red LED which provides information about the operating status and diagnostics. Wiring DiagramsDimensions DIP Switch Settings for Proportional Model (VA-7482 Only)All the proportional models have a six DIP switches that allow the user to configure the actuator in the field.The actuator is shipped from the factory with all the DIP switches in OFF position.Table 2: Floating Models LED StatusLED StatusDescriptionOffNo Power SupplyGreen BlinkingMoving to PositionGreen BlinkingEnd Stroke ConfirmationGreen Steady OnEnd Stroke ReachedTable 3: Proportional Models LED StatusLED StatusDescriptionOffNo Power SupplyGreen BlinkingMoving to PositionGreen BlinkingEnd Stroke ConfirmationGreen Steady OnPosition ReachedRed BlinkingCycleRed Steady On4/20 mA or 2/10 VDC Signal LostFIG:24 VAC Floating ModelsFigure 2: 24 VAC Floating Model Wiring DiagramsFigure 3: 24 VAC/VDC Proportional Model Wiring DiagramsBLKREDGRY(-)(+)24 VAC/DCDC 0(2)...10 VFIG:24 VAC/VDC Proportional ModelFigure 4: VA-748x Dimensions, in. (mm)FIG:dimensions3 (80)3 (73.6)2 (49)Figure 5: DIP Switches123456ON0...10VDC0...20mA2...10VDC4...20mA0...5VDC5...10VDCOFFDALINVDCRAEq%mA1:2:3:4: ACTION5: CURVE6: SIGNAL TYPECONTROL SIGNAL RANGE123456ONOFFFIG:DIPswitchesFigure 5: Switch PositionsVA-748x Electric Valve Actuators Product Bulletin4DIP Switch 1, 2, 3, and 6 DIP switch 1, 2, and 3 allow the user to change the analog input ranges. To change from voltage analog input to current analog input set DIP switch 6 accordingly.DIP Switch 4DIP switch 4 allows the user to change the action of the actuator in relation to the analog input.DIP switch 4 is off (DA) when the signal increases and the actuator stem extends.DIP switch 4 is on (RA) when the signal increases and the actuator stem retracts.DIP Switch 5DIP switch 5 allows the user to change the control characteristic of the actuator in order to obtain a combination of valve and actuator Linear or Almost Equal Percentage.DIP Switch 5 OFF (Linear)When DIP switch 5 is set to Off, we recommend you use the valve with the linear or equal percentage control characteristic.DIP Switch 5 ON (Almost Equal Percentage)When DIP switch 5 is set to On, we recommend you use the valve with the quick opening or on/off control characteristic.Jumper SettingsProportional Model (VA-7482-0312 Only), Suitable for the VG4000 and VG5000For proportional actuators suitable for the VG5000 or VG4000, the jumper on the VA-7482-0312 allows the user to set the push down to close (PDTC) or push down to open (PDTO) function.The actuator is set at the factory for use with two-way PDTC VG4200 and VG5200 valves.Figure 6: DIP Switch 4 Off (DA)FIG:DIPoffFigure 7: DIP Switch 4 On (RA)FIG:DIPonFigure 8: Jumper LocationFIG:jumper settingVA-748x Electric Valve Actuators Product Bulletin5For two-way PDTO VG4400 and VG5400 valve applications, set the valve port selection jumper on the VA-7482-0312 to PDTO. For three-way VG4800 and VG5800 valve applications, set the jumper on the VA-7482-0312 to the valve port type that corresponds to the service port of the valve.Repair InformationIf the VA-748x electric actuator fails to operate within its specifications, replace the unit. For a replacement electric actuator, contact the nearest Johnson Controls® representative.Table 4: Actuator Closing DimensionsProduct CodeValve TypeUpper Mechanical End Stroke (UMES) Lower Mechanical End Stroke (LMES)VA-7482-03121Push Down to Close (PDTC - Factory Set) 0.64 in. (16.3 mm)0.4 in. (10.0 mm)Push Down to Open (PDTO)VA-7482-9002-RA2Auto Stroke Detection0.57 in. (14.5 mm)0.32 in. (8.2 mm)VA-7482-8002-RA2Auto Stroke Detection0.64 in. (16.3 mm)0.4 in. (10.0 mm)1.On the proportional model, the jumper allows the user to set the PDTC or PDTO function. The actuator is factory set for use with two-way VG4200 and VG5200 valves with PDTC. For two-way VG4400 and VG5400 valve applications with PDTO, set the valve port selection jumper to PDTO. For three-way VG4800 and VG5800 valve applications, set the jumper to the valve port type that corresponds to the service port of the valve.2.The proportional actuator series is suitable for different terminal units. See Table6 for the valve compatibility matrix.VA-748x Electric Valve Actuators Product Bulletin6Ordering InformationTable 5: VA-748x Electric Valve ActuatorsCode NumberPower SupplyControl TypeActuator SpeedMounting Thread NutCable Length (Factory Mounted)VA-7480-031224 VACFloating13 s/mmM28 x 1.5118 in. (3 m)VA-7482-031224 VAC/VDCProportional8 s/mmM28 x 1.5118 in. (3 m)VA-7482-8002-RA24 VAC/VDCProportional8 s/mmM30 x 1.559 in. (1.5 m)VA-7482-9002-RA24 VAC/VDCProportional8 s/mmM30 x 1.559 in. (1.5 m)Table 6: Valve Compatibility MatrixActuator CodeJohnson ControlsDanfossFreseIndustrie TechnikOventropSauterSchneider ElectricSiemensTA HydronicsFratelli PettinaroliWatts IndustriesControlliVA-7480-0312VG4000 Series (discontinued)VG5000 Series (discontinued)N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AVA-7482-0312VA-7482-8002-RAVG6000 SeriesV5000 SeriesVP1000 SeriesAB-QM (DN10 to DN32)N/AVFX Series (DN15 to DN20)COCON QTZ (DN10 to DN32)COCON 2TZ(DN15 to DN20)Tri-M Plus(DN15)VUT SeriesBUT SeriesVXL SeriesBXL SeriesVCLDN10 to DN32)VUL SeriesBUL SeriesVZx8 SeriesVZx8C(DN15 to DN20)VVP47 SeriesVXP47 SeriesVMP47 SeriesTBV-C(DN15 to DN20)TBV-CM(DN15 to DN25)TBV-CMP(DN15 to DN25)KTCM512(DN15 to DN25)91 Series93 Series2131 Series3131 Series4131 SeriesN/AVA-7482-9002-RAN/AN/AOptima Compact53-13xx2.5 mm(DN10 to DN20)Optima Compact53-13xx5.0 mm(DN10 to DN20)Optima Compact53-13xx5.5 mmDN25 to DN32)N/AN/AN/AN/AN/AN/AN/AN/AVSX03PBVSX04PBVSX05PBVSX06PB(DN10 to DN20)VSXT03PBVSXT04PBVSXT06PB(DN10 to DN20)VSXT07PBVSX08PB(DN25 to DN32)Table 7: Accessory (Order Separately)Code NumberDescriptionVA-7482-CAB32118 in. (3 m) cable kit for proportional actuatorVA-748x Electric Valve Actuators Product Bulletin7Technical Specifications VA-748x Electric Valve ActuatorPower RequirementsVA-7480-031224 VAC ±15% at 50/60 Hz; 2.5 VA at maximum power supply; Class 2VA-7482-xxx224 VAC ±15% at 50/60 Hz; 24 VDC ±15% at 2.5 VA at maximum power supply; Class 2Input SignalVA-7480-031224 VAC, 50/60 HzVA-7482-xxx20 to 10 VDC or 0 to 20 mAInput Signal AdjustmentsVA-7480-0312NoneVA-7482-xxx2Input Signal: 0 to 10 VDC, 2 to 10 VDC, 0 to 5 VDC, 5 to 10 VDC, 0 to 20 mA, or 4 to 20 mADirection: direct (drive down) or reverse (drive up) with input signal increaseInput ImpedanceVA-7480-03123,900 ohmsVA-7482-xxx2100,000 ohmsElectrical ConnectionsVA-7480-0312VA-7482-031218 AWG cable; 118 in. (3 m) longVA-7482-8002-RAVA-7482-9002-RA18 AWG cable; 59 in. (1.5 m) longMechanical ConnectionsThreaded coupling for Johnson Controls VG4000, VG5000, M28x1, and M28x5 Series Zone ValvesThreaded coupling for Johnson Controls VG6000, V5000, VP100, M30x1, and M30x5 Series Zone ValvesProtectionNEMA 2, IP43Output ForceVA-7480-0312VA-7482-031221.5 lb (96 N) minimumVA-7482-8002-RAVA-7482-9002-RA31.4 lb (140 N) minimumMechanical Stroke0.25 in. (6.3 mm) maximumFull Stroke Cycle TimeFloating 13 s/mm, proportional 8 s/mmFull Stroke CyclesVA-7480-0312VA-7482-0312250,000VA-7482-8002-RAVA-7482-9002-RA150,000Audible Noise Rating<30 dBAFluid Temperature Limits35 to 203°F (2 to 95°C)Ambient Operating Conditions32 to 122°F (0 to 50°C), noncondensingAmbient Storage Conditions-4 to 149°F (-20 to 65°C), noncondensingCompliance United StatesTested per UL2043. Suitable for Use in Other Environmental Air Space (Plenums) in Accordance with Section 300.22 (C) of the National Electrical Code. UL 60730-1 Listed Type 2 Enclosure, File E194024 XAPX XAPX7CanadaCSA C22.2 No. 139 Certified, File LR85083, Class 3221 01EuropeCE Mark – Johnson Controls, Inc. declares that this product is in compliance with the essential requirements and other relevant provisions of the EMC Directive 2004/108/EC and Low Voltage Directive 2006/95/EC.The 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.comVA-748x Electric Valve Actuators Product BulletinMetasys® and Johnson Controls® are registered trademarks of Johnson Controls, Inc.All other marks herein are the marks of their respective owners. © 2016 Johnson Controls, Inc.Building Efficiency507 E. Michigan Street, Milwaukee, WI 532028Next >