Product Bulletin VA-7450 Issue Date 04 2009 VA-7450 Electronic Terminal Unit Valve Actuator ntroduction I The VA-7450 Series provides incremental or proportional control in HVAC applications. The compact design of this actuator makes it suitable for installation in confined spaces, such as fan coil applications. The VA-7450 series actuator is designed for field mounting onto VG4000 and VG5000 terminal unit valves (see pertinent bulletin). VA-7450 microprocessor-based actuator with VG5000 Features and Benefits Simplifies installation because models require no � Auto-commissioning adjustments in the field. Extends actuator life by reducing drive time and � Motor Time-out feature therefore motor wear. � Compact design Allows installation in confined spaces (fan coils, etc.). Simplifies installation; allows application flexibility. � Can be mounted in situ Keeps plug and seat clear of impurities. � Periodic full cycle (anti-sticking) option � LED operating status display Reduces the commissioning time and displays operating status. � Selectable flow characteristic with VG4000 Improves controllability. & VG5000 © 2009 Johnson Controls, Inc. Order No. DS 10.469 E VA-7450 2 rdering data peration O O Incremental model (VA-7450-1001) Item Code Features See also VG4000 and VG5000 product bulletins VA-7450-1001 • Incremental control for valve operation. • No anti-sticking cycle Red cable Actuator stem VA-7452-1001 • Proportional control energised extends • Self-calibrating White cable Actuator stem • 0 to 10 VDC input signal energised retracts • Direct Acting When the signal is applied to the blue and red • Adjusted to produce modulating wires, the actuator stem extends. When the signal flow characteristic in combination is removed the actuator remains in position. with VG4000 & VG5000 series If the signal remains applied to the red or to the terminal unit valves. white wire, the actuator will time out and shut off • No anti-sticking cycle the motor after approximately 80 seconds. VA-7452-9001 • Proportional control When the signal is applied to the blue and white • Self-calibrating wires, the actuator stem retracts. When the signal • Selectable input signals for range is removed the actuator remains in position. splitting (0 to 10, 0 to 5, 5 to 10 If the signal remains applied to the blue or to the VDC). white wire, the actuator will time out and shut off • Reversible Action the motor after approximately 80 seconds. • Selectable combined flow End of stroke Confirmation: When the signal is characteristic in combination with applied continuously in the same direction, the VG series terminal unit valves actuator turns on every 2 hours and drives in the • Selectable Anti-sticking cycle signal direction for approximately 80 seconds to confirm the end of stroke position. All actuators fitted with 1.5 m cable. Models with other cable lengths are available on Proportional models (VA-7452-x001) request. See also VG5000 product bulletin for valve operation. ctuator combinations A VA-7452-1001 has fixed settings (see curve � below) and the VA-7452-9001 adjustable: The VA-7450 series electronic valve actuators are designed to be used with the VG4000 and Action: When the signal increases in Direct Action VG5000 valve series. The ordering data for these (DA) configuration or decreases in Reverse Action valve bodies are as follows: (RA) configuration, the actuator motor drives the gear assembly, pushing down on the valve return � VG4000 series spring. VG4 0 C � � � When the signal decreases in DA configuration or increases in RA configuration, the actuator retracts � VG5000 series and allows the valve return spring to move the VG5 0 C � � � valve stem in the direction of its normal position or up. Please refer to the product bulletin “VG5000 Jumper 5 “Direct Action” Forged Brass Valves” and “VG4000 Cast Bronze M Terminal Unit Valve” for complete ordering information. Jumper 2 Jumper 3 0% � � � 50% � � 100% � 5 10V 0 Jumper 5 “Reverse Action” M 0% Jumper 2 Jumper 3 � � 50% � � � 100% � 0 5 10V VA-7450 3 End of stroke confirmation: When the input alve Action Summary signal is at 0 or 100% continuously, the actuator V turns on every 2 hours and drives in the signal See paragraph “Operation” for more information direction for approximately 80 seconds to confirm regarding actuator stem action. the end-of-stroke position. Stem movement / flow Self-Calibration cycle: when the power is = flow = no flow Code Type applied, the actuator self-calibrates to the full stroke end position by performing a complete Actuator M M VG42x0xC Actuator cycle. The actuator drives in the stem down stem stem up VG52x0xC direction for approximately 80 seconds, then down 2-way NO, PDTC*) drives to the input signal command position. Actuator M M Anti-Sticking Cycle (VA-7452-.9001): When the VG44x0xC Actuator stem stem up VG54x0xC anti-sticking cycle is enabled (ON), the actuator down 2-way NC, performs one complete cycle every 24 hours to PDTO*) clear possible accumulation of impurities from the Return valve plug and seat. The anti-sticking feature is M M Actuator Actuator selectable through jumper 1. stem VG55x0xC Supply stem up down Combined flow characteristic: The actuator can 3-way + NO ByPass be set to produce a modulating flow characteristic when used in combination with VG4000 and M Actuator M VG5000 valves series. VG48x0xC Actuator stem stem up VG58x0xC down Selection of valve port type: the actuator is 3-way, mixing factory set for use with 2-way Push Down to Close (PDTC) VG4200 and VG5200 valves. For 2-way Push Down To Open (PDTO) VG4400 and ounting instructions M VG5400 valve applications set the valve port selection jumper to PDTO. For 3-way VG4800 and When mounting the actuator on a VG4000 or VG5800 valve applications set the jumper to the VG5000 valve, please follow the instructions valve port type that corresponds to the service port below: of the valve. Operating display LED Indication ON Power supply present, motor not running. • Incremental actuators: time out • Proportional actuators: actuator is in control Single Motor is running Blinking Double Actuator performs an end-of- Blinking stroke confirmation cycle or an anti-sticking cycle VG4000 and VG5000 OFF Power supply is not present • Never use the actuator as a mounting lever. • Mounting position: Max 90° Max 90° OK NO 4 VA-7450 iring instructions iring Diagrams W W WARNING When servicing make sure that: ELECTRONIC BOARD • the electric supply to the actuator is switched off to avoid possible damage to the equipment, personal injury or shock. M M • you do not touch or attempt to connect or disconnect wires when electric power is on. 24 V~ common When wiring the actuator, please follow the Incremental model instructions below: Before mounting, wiring or adjusting the actuator, make sure that the power supply has been disconnected to avoid possible harm to material or person. ELECTRONIC BOARD Make sure that the line power supply is in accordance with the power supply specified on the actuator. All wiring should conform to local codes and must com 0...10V input be carried out by authorised personnel only. control signal common 24 V~ Proportional model djustments (jumper settings) of proportional models A VA-7452-1001 has FIXED settings (the jumpers This is how the jumpers are positioned on the are NOT accessible) board: 1 2 6 VA-7452-9001 is configurable 3 4 Jumper in place: 5 Jumper removed: VA-7452-1001 VA-7452-9001 (adjustable) Function (fixed settings, not adjustable) Factory setting Alternative setting Anti-sticking 1 enabled disabled not active Input 2 0..10V 5..10V 0...5V 0...10 V control signal 3 Adjustable flow Modulating with Modulating with flat Modulating with characteristic 4 continuously increase in lower area continuously with VG4000 and increasing flow curve of flow curve increasing flow curve VG5000 Action 5 Direct (DA) Reverse (RA) Direct (DA) 2-way PDTO (NC) 2-way PDTO (NC) 2-way PDTC (NO) Valve port type 6 and 3-way Normally and 3-way Normally valve bodies Closed port Closed port With K 0.25 and 0.4 combined flow characteristic is always “quick opening” independent of jumper vs setting. Jumper No. Red Blue Black Red Blue White White VA-7450 5 imensions (in mm) D 74 47 55 M28x1.5 cable length 1.5m VA-7450 actuator Manual Override Turn approx. 90° for max. stroke. VA-7450-8900 manual override ring accessory (optional) for combination with VG4000 or VG5000 valve bodies. It is used to manually open PDTO 2-Way valves or the Normally Closed port of 3-way valves. It is to be mounted between the valve and the actuator. Note: The manual override ring will not fully close PDTC valves or the Normally Opened port of 3-way valves. 69.5 35,2 21,3 6 VA-7450 pecifications S Models VA-7450-1001 VA-7452-1001: Fixed settings (not adjustable) VA-7452-9001: Adjustable Action/Control Incremental Proportional (floating or PAT) (0...10 V, 0...5 V or 5...10 V) Supply voltage (50/60 Hz) 24 VAC ± 15% Input impedance - 80 kΩ Power consumption Apparent: 2.7 VA at max. power supply Active: 2 W Nominal force 120 N +30% / -20% Maximum stroke 5 mm Full stroke time 45 seconds for 3 mm stroke Protection IP40 (EN 60529) Material: Housing / Yoke PA66 – Glass + Mineral filled (30% total) Kelon A FR CETG/300-V0 Fitting Brass CuZn40Pb2 Fitting thread M28x1.5 Housing colour RAL7035 Ambient Operating condition 0°C to 50°C, non condensing Ambient Storage condition -20°C to 65°C, non condensing Max. fluid temperature 95°C Electrical connections 1.5 m flexible cable, Ø 4.5 mm Operating status LED display Audible Noise Rating < 30 dB(A) Shipping Weight 0.15 Kg Compliance Directive 89/336 EEC: EN 61000-6-1; EN 61000-6-3 The performance specifications are nominal and conform to acceptable industry standards. 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. Johnson Controls, Inc. Building Efficiency Headquarters: Milwaukee, Wisconsin, USA Branch Officies: Principal Cities World-wide www.johnsoncontrols.com