Cla-Val CPC Position Control
Contents
1. Y LA VAL Pressure i i ha pa J hah n pn i VENET aN Ideal for Pressure Management amp Modulation Pressure Level or Flow Control Retrofit Easy interfacing to SCADA 4 20 mA Extended Electronic Protection IP68 Submersible Motor 24 VDC and Powered 6 W only yor al ofl www cla val ch CLA VAL CPC Position Control 4 20 mA Simple Reliable amp Accurate CLA VAL CPC Actuated Position Control 4 20 mA r ov CLA VAL gt Simple Reliable and Accurate Electronic brushless Motor Technology ae e Key Points and Description e Accurate 4 20 mA Position Control Actuator e Pressure Level or Flow Control e Easy interfacing to SCADA 4 20 mA e Submersible IP 68 e Extended Electronic Protection e Motor 24 VDC and powered with only 6 W The CLA VAL CPC SERIES includes all valves with the Electronic Position Actuator CPC provides accurate remote 4 20 mA set point adjustments and can adjust pressure flow or even reservoir level by positioning the valve precisely and smoothly between the fully closed and the fully open position Used for large water supply systems transport pipelines or industrial applications the CLA VAL CPC position control is a Hydraulic Actuator combined with Electronic brushless Motor Technology The CPC Actuator adjusts valve operating position by controlling its lift using hydraulic forces present in the main valve it creates a2. CPC Actuated Position Control 4 20 mA r ov CLA VAL gt How does a Hydraulically Balanced Actuator Regulate Valve Closing Fig 1 The brushless motor drives the orifice coupling downwards towards the requested set point which in turn decreases the variable orifice size Subsequently less and less water discharges from the cover chamber to the valve outlet Vs Water flowing from the valves inlet port Ve enters the valve cover chamber via the calibrated fixed orifice which becomes increasingly greater than Vs generating the downward motion of the diaphragm assembly This closes the valve to the prescribed set point corresponding to the analogical 4 20 mA signal transmitted to the brushless motor The displacement of water from the main valve diaphragm assembly is performed purely hydraulically and there is no mechanical connection between the orifice coupling and the valve stem Orifice coupling Stem tube In the set position the inlet water Ve balances the discharge water Vs which explains why any in balance between these two values permits an immediate and smooth reaction which delivers a smooth motion of the internal diaphragm assembly In the completely closed position the leakage created by the mechanical tolerance between the orifice coupling and the stem tube is stopped drip tight at the outlet of the Electronic Position Actuator CPC by a separate solenoid valve installed in its dischar
3. balance between inlet outlet and cover chamber pressure Valve inlet water pressure enters in the valve cover chamber through a calibrated fixed orifice Water flows out of cover chamber to valve outlet through the stem tube and a variable orifice as illustrated in Fig 1 The variable orifice size is adjusted only by the CPC orifice coupling coloured brown on Fig 1 by the a 7o brushless motor inducing the opening or the closing of the main valve The single Hydraulic Actuator Motor shaft J Security Sensor positioning of the orifice coupling is Orifice completely independent of the main valve coupling diaphragm assembly and will produce identical positioning of the main valve diaphragm assembly regardless of the oe system pressure outlet As shown in Fig 1 there is no mechanical link between the orifice coupling and the Stem valve stem which are operating as a servo UDE piston unit Consequently the brushless motor provides frictionless operation together with a very low power consumption of 6 W to move at an adjustable speed the orifice coupling up or down to reach any prescribed valve position Security sensors A 3 lt and loss signal mode are integrated in the motor assembly www cCla val ch gt CLA VAL Europe cla val cla val ch 1 LINO40DE A 02 10 Copyright CLA VAL Europe Specifications subject to change without notice no contractual illustrations CLA VAL
4. 300 NGE 80 400 PN 16 bar standard 10 C to 80 C IP68 standard allowing full immersion solenoid junction box sensor not included in IP68 Plug amp Play NT 2000 XP Vista Win 7 Default mode Refer to user manual for LED diagnostics and codes red green blinking Options available maintain current position go to 4 mA position go to 20 mA position cla val cla val ch 3 LINO40DE A 02 10 Copyright CLA VAL Europe Specifications subject to change without notice no contractual illustrations Y ov CLA VAL CPC Actuated Position Control 4 20 mA CLA VAL gt 4 Typical applications of the CLA VAL series CPC 4 20 mA Signal Upstream pressure P1 control Downstream pressure P2 control Rate of flow Q Level H control control The CLA VAL CPC SERIES receives a remote analogical signal 4 20 mA over a SCADA system or equivalent This signal will act directly on the brushless motor which will drive the orifice coupling until it reaches its corresponding set value The CPC Actuator is particularly recommended if the user intends to apply a hydraulically operated control whilst maintaining the flexibility to change its respective set value at anytime The applications are numerous considering the various parameters of a hydraulically operated system whose four key applications are illustrated above and can be listed as follows Inlet pressure control Outlet pre
5. contractual illustrations CLA VAL gt Actuated Position Control 4 20 mA features Design The CLA VAL CPC Actuated Position Control is designed for continuous position control The CLA VAL CPC can be assembled on all CLA VAL valves up to GE300 NGE400 with specific speed adjustment Refer to specific datasheet for more information Software User friendly CLA VAL_ Calibration Software provides simple to program control features 4 20 mA range settings are directly entered to match desired flow or level values The graphic interface is self explanatory and offers a very simple way to calibrate precise control values Internet Updates All software updates are free and available on the CLA VAL web site PC Connection Plugged directly in your PC USB port or by Bluetooth e Drive parameters and data are instantly accessible through the calibration software PCB Printed Circuit Board Is build with the latest technologies including high quality components The input is insulated 2 wires and isolated to protect against signal interference common mode rejection up to 1000 V A resettable fuse is used to protect against over voltage reverse polarity To prevent condensation humidity protection heater starts when internal temp falls below 5 C the PCB includes also tropical coating for moisture protection The position low and high is protected automatically cuts power to prevent mechanical damage without loss of ori
6. ge line Valve Opening Fig 2 The brushless motor drives the orifice coupling upwards to the requested set point which in turn increases the variable orifice size Subsequently more and more water is discharged from the main valve cover chamber to the valve outlet Vs Water entering into the valve cover Ve via the calibrated orifice is not compensating for the water leaving the top cover via Vs This permits the diaphragm assembly to move upwards which opens the valve to the prescribed set point corresponding to the analogical 4 20 mA signal Stem tube transmitted to the brushless motor The displacement of the main valve diaphragm assembly is performed purely hydraulically since there is no mechanical connection between the orifice coupling and the valve stem Orifice coupling m TT In the set position the inlet water Ve is balancing the water N discharged via Vs which explains why any in balance a Lo between these two values permits an immediate and smooth reaction which delivers a smooth motion of the internal diaphragm assembly Due to these CLA VAL features both pressure differential values valve inlet cover chamber or cover chamber gt valve outlet are identical therefore any change of pressure e Fig 2 in the system does not affect the set position of the main valve y CLA VAL Europe ERE 2 LIN040DE A 0210 Copyright CLA VAL Europe Specifications subject to change without notice no
7. ginal calibration The Brushless motor is made for continuous duty higher efficiency and reliability MEXUSB20401A cable and MEXUSBADAPT is required for programming and monitoring gt CLA VAL Europe www cla val ch CLA VAL CPC Actuated Position Control 4 20 mA Led indicator Power supply cable Input Output cable gt Technical data Electrical Power Power Protection Led display Electrical connection Input command Input 4 20 mA Protection Output feedback Output 4 20 mA Protection mi Sizes Operating Pressure Temperature range Rating Interface Troubleshooting Remote command failure Maintenance port Security high sensor Security low sensor Electrical Specifications e 24 VDC 6 10 15 rpm sizes 300 mA max load draw 85 mA stand by no load draw Max 32 VDC over voltage Max 1000 mA torque load Reverse polarity amp short circuit 80 C stop high temperature Green led 2 x Moulded 10 m cables e 4 20 mA 2 wires e 2x dry contact contact security Max 32 VDC over voltage Optocoupler isolation CMR 1000 V CMR common mode rejection Insulated 2 wires e 4 20 mA Output charge lt 500 Q e 2 x programmable position alarms 24 VDC 240 VAC up to 1 A max Max 32 VDC over voltage The input dry contact and 4 20 mA output have the same common or earth but are not individually isolated Other Specifications GE 50
8. re numerous depending on the types of the parameters chosen Local Set Point e Smart L2 The CPC Actuator working together with an e Smart L2 electronic controller provides automatic control of the system E Smart L2 compares local feed back signal with pre programmed conditional set points and adjusts the valves position automatically until set point is reached i i a om Local set point Feedback Hydraulic Safety In most CPC Actuator applications it is possible to secure its operation during electrical power failure by additional hydraulically operated CLA VAL pilot s which are added to its pilot circuit These allow the valve to maintain a safety value E g Pressure reducing pressure sustaining or maximum rate of flow until power is restored Hydraulic safety The above combination offers the advantage of not only controlling the valve in the event of electrical power failure but to increase the flexibility of the CPC Actuator application by adding to the basic operation other hydraulically operated functions These additional features for the SERIES CLA VAL CPC are highly appreciated in applications where other variables have to be regulated during power TEN failure Autonomous Turbine Autonomous A particular feature of the CPC Actuator is its very low power turbine consumption with a voltage of 24 VDC CLA VAL has therefore taken advantage of this and developed an autonomous turbine hydraulically installed as b
9. ssure control Rate of flow control Level control The CLA VAL CPC main valve offers a Characteristic curves characteristic curve extremely well adapted to a regulating process within a SCADA supervision system In fact Fig 1 illustrates the characteristic curves of a butterfly green and ball blue valve as well as the one of the CPC red main valve This demonstrates that the CLA VAL CPC curve offers on one hand a much wider regulating range than the two other and on the other hand a low opening value at small rate of flow These two conditions are the key factors for any progressive accurate and sensible regulating operation which allows Opening the CLA VAL CPC to offer such a wide application range Rate of flow l s y CLA VAL Europe THE 4 LINO4ODE A 02 0 Copyright CLA VAL Europe Specifications subject to change without notice no contractual illustrations Yoav CLA VAL CPC Actuated Position Control 4 20 mA CLA VAL gt 4 Typical applications for the SERIES CLA VAL CPC Remote set point Remote Set Point The CPC actuator receives an analogical signal 4 20 mA from a SCADA system and automatically adjusts the brushless motor until the valves position reaches the prescribed set point The CPC actuator is particularly recommended for applications where the user wishes to keep a hydraulically operated system with the ability to change the set point of the valve Applications a
10. ypass of the CPC Actuator operated valve The turbine can feed the CPC Actuator electrical motor and eventually any other low power users as transmission of data or specific information The autonomous turbine is mounted in bypass of the valve is producing 0 5 A at 24 VDC and works in parallel with a battery permitting actuation of the CPC motor y CLA VAL Europe TERE 5 LIN040DE A 0270 Copyright CLA VAL Europe Specifications subject to change without notice no contractual illustrations
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