Electronic Pressure Independent Control Valve. Technical Databook. Belimo Actuators Ltd.

Transcription

1 Electronic Pressure Independent Control Valve echnical Databook Ver. Version 2 1 Belimo Actuators Ltd.

2 Product overview/contents he Electronic Pressure Independent Valve and Rotary Actuators for modulating V [l/s] [mm] DN [inches] Valve and Sensor Frequency Rotary actuator " EPIV " EPIV Hz 60Hz SR24 - PI " 3" EPIV EPIV Hz 60Hz SR24 - PI - 80 Note: he Electronic Pressure Independent Valve (EPIV) must be ordered together with the SR..Rotary Actuator. Ordering examples : EPIV with SR24-PI-65 Rotary Actuator fitted, order code: EPIV SR24-PI-65 Neither the actuator nor the Flow sensor can be ordered as a standard product. able of contents Product overview / contents 1 echnical data SR-PI.. Rotary Actuator 2 4 subject to technical changes 1

3 EPIV technical data Applications Large AH system Distribution Applications Electronic Pressure Independent Valve: DN For modulating, and MP-Bus control of cold and warm water echnical data Medium cold and warm water, with 50% volume of glycol in closed system emperature of medium system without spindle heater: +2 C C system with spindle heater: -10 C C Rated pressure 1600kPa Flow characteristic equal percentage (following VDE 2173) Rangeability 1:40 (2.5% of the V nom) Pipe connector Flange ISO Differential pressure Max. 340kPa Closing pressure ps 700 kpa (actuator still capable of closing valve, leakage rate exceeds 0.01% maximum flow) Angle of rotation 90 Installation position vertical to horizontal (referred to as the valve stem) Maintenance maintenance-free Material Valve body forged nickel-plated brass Ball Stainless Steel Characterising disk Stainless Steel Grounded Flow Sensor Accuracy Inlet length Flow unit needs to be grounded +_5% 5xDN Mode of operation he Electronic Pressure Independent Valve is motor-operated by a type of SR.. Rotary Actuator he actuator is controlled by a modulating or MP-Bus system and move the ball of the EPIV, the throttling element, to the opening position dictated by the control signal. Product features Equal-percentage characteristic Equal-percentage characteristic of the flow ensured by the integrated characterising disk, and algorithm inside actuator Constant flow volume V. Constant flow volume V. with various differential pressure up to 340kPa, thanks to the electronic flow sensor. A valve authority of 1 is attained, regardless of differential pressure variations across the valve. Even in the part-load range, the flow rate remains constant, and valve needs to compensate the dp. Manual operation by lever Manual operation by lever after disengaging the gearing latch on the type of SR.. Rotary Actuator subject to technical changes 2

4 EPIV technical data System Functionality and olerances Flow olerance of the EPIV: From 25% to 100% V nom +/-10% of the actual Flow From 2.5% to 25% V nom +/-10% of the Flow at 25% +/-2.5% of V nom. V nom = he nominal flow of the EPIV-System Remark: his tolerance is determined under the whole range of temperature and glycal mixture without any calibration on the field. Flow % Curve 1:40 Flow Curve Flow Reading by Feedback () he actual flow can be read out from feedback signal pin 5 (), with referring to the flow curve calculation (2 formulae as below): Linear part (from x = 0% to x = 31%): [%] = X[X] n lin n lin = 0.35 Equal percentage part of the curve (from x= 31% to x = 100%): [%] = kv 0 exp(n gl X[%]) kv0 = 0.04 ngl = 3.22 Common feedback signal table (/5) subject to technical changes VDC Controller Actuator Feedback: / VDC Water Flow in % VDC Controller Actuator Feedback: / VDC Water Flow in % Controller Actuator Feedback: / VDC 2-10 VDC Water Flow in % % % % % % % % % % % % % % % % % % % % % % 3

5 SR-PI..Rotary Actuators Communication-capable rotary actuator for EPIV system orque 20Nm Nominal voltage AC/DC 24V Communication via BELIMO MP-Bus Conversion of sensor signals Multifunction control SR24-PI-65 SR24-PI-80 echnical data Electrical data Nominal voltage AC 24V, 50/60 Hz / DC 24V Power supply range AC V / DC V Power consumption in operation At rest Rating nominal torque 5.75W 11VA Connection Cable 1m, 4 x 0.75mm 2 orque (nominal torque) Min. 20Nm at nominal voltage Control Control signal DC V, input impedance 100k Working range DC V Position feedback (measuring voltage 5) Running time Volumetric flow, DC V 90s / 90 Sound power level Max. 45dB (A) (Just Actuator) Position indication Mechanical, plug-on Safety Protection class III Safety extra-low voltage Degree of protection IP54 EMC CE according to 89/336/EEC Mode of operation ype 1 (in acc. with EN ) Rated impulse voltage 0.8 kv (in acc. with EN ) Ambient temperature range C Non-operating temperature range C Ambient humidity range <95% RH, non-condensating (acc. to EN ) Maintenance Maintenance-free Dimensions/weight Dimensions See "Dimensions" on page 7 Weight approx. 1200g Sensor Nominal voltage AC 24V, 50 Hz ( 60Hz: EPIV ) DC 24V 4

6 SR-PI..Rotary Actuators Safety notes! he actuator has been designed for use in stationary heating, ventilation and air conditioning systems and is not allowed to be used outside the specified field of application, especially in aircraft or in any other airborne means of transport. It may only be installed by suitably trained personnel. All applicable legal or institutional installation regulations must be complied with. he device may only be opened at the manufacturer s site. It does not contain any parts that can be replaced or repaired by the user. he cable is not allowed to be removed from the unit. he device contains electrical and electronic components and is not allowed to be disposed of as household refuse. he local and currently valid regulations and requirements must be observed. Product features Mode of operation Conventional operation: he actuator is controlled with a standard modulating signal of DC V and travels to the position defined by the control signal. Measuring voltage serves for the electrical display of the flow. Operation on the MP-Bus: he actuator receives its digital positioning signal from the higher level controller via the MP-Bus and travels to the flow defined. Connection serves as communication interface and does not supply an analogue measuring voltage. Converter for sensors Parameterisable actuators Manual override High functional reliability Connection option for a sensor (active sensor or switching contact). he MP actuator serves as an analog/digital converter for the transmission of the sensor signal via MP-Bus to the higher level system. he factory settings cover the most common applications. Input and output signals and other parameters can be altered with the MF-H parameterising device or the BELIMO Service ool, MF-P. Manual adjustment possible with pushbutton - temporary, permanent.he gear is disengaged and the actuator decoupled for as long as the button is pressed / latched. he actuator is overload-proof, requires no limit switches and automatically stops when the end stop is reached. Description of the Parameters used Measurement range Control range Area for V'max Measurement range 0% 2.5% 30% his range describes the range the sensor can measure. V'max V'nom=100% Flow Control range his range describes the range the system can control a certain flow value. he Control range is 1:40 (2.5% of the V'nom) he Control range is not adjustable by any tools. V'nom V'max Is the nominal Flow of the EPIV -System. Each DN - Size has just one V'nom. he maximum Flow value can be adjusted. - V'max can be equal with V'nom - V'max can be lower than V'nom - Adjustment range: 30%--100%V'nom V'max can be adjusted with the PC -ool (Version 3.5) and the GEN.VAV 5

7 SR-PI..Rotary Actuators Electrical installation Wiring diagram Conventional operation Operation on the MP-Bus Notes Connect via safety isolation transformer.! Parallel connection of other actuators possible. + DC V DC V + DC V MP SR24-PI.. SR24-PI.. Connection of active sensors + MP Connection of external switching contact + MP p Further actuators and sensors (max. 8) Further actuators and sensors (max. 8) SR24-PI.. Supply AC/DC 24A Output signal DC V (max. DC V) Resolution 30 mv + SR24-PI.. Switching current 16 24V Start point of the operating range must be parameterised on the MP actuator as > _ 0.6V 6

8 SR-PI..Rotary Actuators Functions for actuators with specific parameters Override control and limiting with AC 24V with relay contacts e (DC V) From controller a b c d e.g. 1N 4007 Function a b c d e Close V'max Open 1 Control SR24-PI-.. #1:Valve fully open Dimensions [mm] Dimensional diagrams Valve+Actuator Dimensions & Weight B C M-Piping otal D A Valve otal Height A.) Valve B.) Sensor C.) M - Piping D.) Actuator DN [mm] Dimensions [mm] Weight M-Piping Seal Valve otal Height [kg]

9 Innovation, Quality and Consultancy: A partnership for motorising HVAC Actuators BELIMO Automation AG Brunnenbachstrasse Hinwil, Switzerland el: Fax: info@belimo.ch BELIMO Actuators (Shanghai) rading Ltd. 479 Chun Dong Road, Building C-2 Xin Zhuang Industry Park Shanghai , P.R. China el: Fax: info.asiapacific@belimo.ch BELIMO Aircontrol (SA), Inc. 43 Old Ridgebury Road Danbury, C , SA el: / Fax: /