Watson & Sons 520DUN user manual Speed analogue input

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22.3 Speed: analogue input

It is possible to control the speed of the pump remotely by one of these methods: a voltage analogue signal within the range 0-10V; or a current analogue signal within the range 4-20mA; or a remote potentiometer using the 10V supply at J7.

The analogue process signal must be applied to the i/p ter- minal of the Analogue 1 connector (J5). Ground to the 0V terminal of the same connector. The pump will provide an increasing flow rate for a rising control signal (non-inverted response) or an increasing flow rate for a falling control sig- nal (inverted response). See 16.2 Analogue in the Setup menu.

4-20mA circuit impedance: 250Ω.

For voltage mode, 0-10V, a stable, reliable voltage source can be used with a DC voltmeter. Circuit impedance: 22kΩ.

Inverting the response is set up in software. Do not invert the polarity of the termi- nals.

A remote potentiometer with a nominal value of between 1k and 2k with a minimum of 0.25W should be wired between the ter- minals of the Rem-pot connector (J7) and the i/p terminal of the Analogue 1 connector (J5). When

using a remote potentiometer, do not apply a voltage or cur- rent control input signal at the same time. The speed control signal will require calibration relative to the minimum and maximum settings of the potentiometer. This is done in soft- ware - see 18.1 Trim in the Setup section.

When using a remote potentiometer, it is important to set the analogue input to volt- age in the Setup menu. Otherwise the reference voltage supply from the Rem-pot connector will be overloaded and will not provide a full 10V.

Watson-Marlow 520DuN IP66/NEMA 4X User Manual

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Contents Contents Watson-Marlow 520DuN IP66/NEMA 4X pumpsPublication history 104 Decontamination certificate 105 Declaration of conformity Declaration of incorporationFive year warranty Cased pumps, 620 cased pumps and 720 cased pumpsConditions ExceptionsWhen you unpack your pump Packaging disposalInspection Components supplied 520DuN pump, IP66 Nema 4X modelsInformation for returning pumps StorageHow they work Peristaltic pumps an overviewSuitable applications Safety notes Page Pump specifications Remote control 520DuN, IP66 Nema 4X modelManual control Analogue controlIP Ingress Protection and Nema definitions NemaPump specifications Standards HarmonisedStandards OtherDimensions 520DuN IP66/NEMA 4X model Unit weightsGeneral recommendations Good pump installation practiceDo’s and do not’s Page Connecting this product to a power supply Page Page Switching the pump on for the first time Start-up check listFirst-time start-up defaults Language Analogue inputSpeed User trimPump is now ready to operate Keypad functions in manual mode Manual operationPage Page Keypad beep Keypad lockManual operation and remote digital inputs and outputs Main menu Keypad functions in menu screensMain menu entry PIN-secure process protection Calibrate Head and tube TubeCalibration dose Page Setup Setup menuTrim Analogue Input 1 speed Program Trim Scaling strokeDisplay AlternativelyPump number BaudStop bits 18.7 Xon/XoffFlow units Run time General alarm OutputsParameters are Run / stopPage Remote stop Page Auto-restart Set maximum speed Backlight18.15 ROM LanguageDefaults BeepSecurity code Pin out details ExitMemoDose To dispense a master doseChanging dosing speed To repeat the doseExit 22.1 520N module removal and replacement Automatic control wiringTo remove the 520N watertight module To replace the 520N watertight module Wiring up Page Do not strap the control and mains power cables together Speed analogue input Scaling analogue input Speed analogue output Tachometer frequency outputRun / stop input SwitchDirection input Tube monitor 520N module Wire colour Auto / manual toggle inputMemoDose input Leak detection inputSupply voltages Outputs 1, 2, 3Important pump status outputs 22.14 RS485 input DC Voltage Max load Typical useHow to get into auto operation Automatic control and operationHow to get out of auto operation Emergency stop How to get into network operation Network control and operationHow to get out of network operation 24.1 RS485 command strings Command Parameters MeaningTroubleshooting Error codes Error condition Suggested actionDrive maintenance Drive sparesIdentification of parts 520R, 520R2 and 520RE pumpheads520REL/520REM/520REH Pumphead position, removal and replacement To reposition the trackRotor replacement Rotor removal29 520R, 520R2 and 520RE installation Opening the pumphead guard29.2 520R and 520R2 tube loading 29.3 520RE fitting the drain port 29.4 520RE Element loading 520REL Pressures Up to 2 bar 30 psiPressures Up to 4 bar 60 psi Up to 7 bar 100 psi 2mm and 6.4mm Industrial SanitaryPage Industrial quick-release connectors Sanitary 3⁄4in mini-Tri-clamp connectors29.5 520RE Element connection 30 520R, 520R2 and 520RE maintenance General guide to cleaning with solvents 31 520R, 520R2 and 520RE rotor settingsChemical Cleaning precautions Pumphead spares 520R/520R2 520REL/520REM/520REHPumping conditions Flow rates520R and 520R2 520RE Continuous tubing 220rpmElements Performance curves Page Page Page Tubing and element part numbers 6mm wall tubing for 520R pumpheads4mm wall tubing for 520R2 pumpheads Inch Marprene Bioprene Pumpsil913.A008.024 Inch Chem-Sure Sta-PureSanitary Inch Bioprene TM Sta-Pure 4mm wall elements for 520RE pumpheads102 Accessory Description Part code Pump Compatibility 35 520 series pumping accessories103 Publication history Trademarks104 RGA number Signature Your position Date Decontamination certificate105

520DUN specifications

Watson & Sons 520DUN is a state-of-the-art model that has garnered attention for its exceptional performance and innovative technologies. Designed for agricultural applications, this machine combines durability, efficiency, and ease of use, catering to the needs of modern farmers.

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Safety is also paramount in the design of the 520DUN. It features reinforced safety measures, including roll-over protection systems and visibility enhancements, ensuring operator safety during operations.

In summary, the Watson & Sons 520DUN represents the pinnacle of agricultural machinery with its powerful engine, remarkable load capacity, precision technology, and ergonomic design. It is tailored for those who seek reliability and efficiency in their agricultural endeavors, making it a noteworthy choice in today's competitive market.
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