AquaLynx 200 ADX. Monitoring and Control System. Background. Operation

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1 AquaLynx 200 ADX Monitoring and Control System The RODI Systems AquaLynx 200 ADX is a unique monitoring system for water treatment applications. The AquaLynx 200 ADX offers a dependable yet affordable solution for monitoring and controlling water treatment processes. It is an ideal choice for the following applications: Background Aerobic water Treatment (Especially MBRs) Filtration Systems, Both Conventional and Aquaculture Systems RO Pretreatment With an easy to use, preinstalled functional program, this monitoring system is ready to use right out of the box. The end user simply needs to plug in their desired inputs/outputs, via spring or screw terminals, power up and the AL 200 ADX monitoring system is ready to go! The AquaLynx 200 ADX IO board, found inside the enclosure, has the ability to read and communicate with multiple types of sensors that regularly need their own isolated controller or extensive programming on a PLC. Since this information is relayed to an intuitive program controlled by touchscreen, the user no longer has to fumble through dozens of submenus and flow charts to find necessary data points or settings. They are clearly displayed on the 4.3 inch color screen. In addition to the HMI (Human Machine Interface) screen used to navigate and control the system s functions, the IO board is also equipped with its own LCD screen and encoder for use in troubleshooting any problem that could arise. The AquaLynx 200 ADX control outputs include four relay outputs and two 4-20 ma analog ouputs. Control functions range from simple on/off control all the way to PID control. The AquaLynx 200 ADX may also be interfaced with other control systems via a serial interface utilizing Modbus RTU protocol. Operation The AquaLynx 200 ADX is capable of reading multiple types of specialized sensors along with typical signals such as discrete (on/off) inputs. The following sensors are currently offered by RODI Systems for use with the AquaLynx 200 ADX: Dissolved Oxygen Sensor Turbidity Sensor Total Suspended Solids Sensor Sensors are ordered separately. IO Board - The heart of the AquaLynx 200 ADX is RODI s functionality focused IO board. This dedicated IO board is protected by an aluminum cover with open slots on the LCD screen, encoder and connection points, all clearly labelled for ease of access. This unique IO board works along with the AquaLynx 200 ADX control unit to streamline the sensor communication process. It also gives the user access to four discrete inputs, four discrete outputs, and two analog outputs. Each of these IO points (including sensors) comes with a wide variety of user defined settings and features which in turn allow extended functionality. Data Logging and Access - The AquaLynx 200 ADX comes equipped with full data logging capabilities granted that there is an SD card installed. All data points can be logged with the live available data, password changes are logged automatically while all other data points can be enabled or disabled though a password protected data logging screen. While there is a dismount SD card option on the Data Logging Screen, live data log is also viewable by connecting the PLC to a PC and using the SD Card Suite software. (Optional) RODI may also provide extended data logging, where network PLC data points can be imported to the AquaLynx 200 SD card. (This would require Custom ADX programming (2) ) 1

2 AquaLynx 200 ADX HARDWARE SPECIFICATIONS SERIAL PORTS One RS-232/RS-485 (Screw Terminals) DISCRETE INPUTS Four Optically Isolated for Dry Contact, 24 VDC Source DISCRETE OUTPUTS Four Form C Relays, VAC / 30 VDC SENSOR INPUTS Two, any combination of: Dissolved Oxygen Sensor Total Suspended Solids Sensor Turbidity Sensor Configurable within the program. ANALOG INPUTS Available with Custom Programming, Two, 12 bit 4-20mA, Isolated) (2) ANALOG OUTPUTS Two,12 bit 4-20 ma, Isolated NETWORK COMMUNICATION CANbus or Modbus communication with other PLCs available with custom programming & expansion comm. port (1)(2) OPERATOR INTERFACE Color Touchscreen, 4.3 Diagonal REALTIME CLOCK Backed with lithium battery, 10 year life POWER VAC, 50/60 Hz, 0.8A/0.6A Max MECHANICAL Enclosure: Polycarbonate - UL 508A, UL 50 and UL 50E Types 1, 2, 3, 3R, 4, 4X, 12 & 13; CSA C22.2 No. 94 Types 1, 2, 3, 3R, 4, 4X, 12 and 13 Complies with: EN / IEC and Type IP66 & RoHS directive Dimensions: 13.5 x x 5.19 Electrical Connections: All connections via screw terminals or spring terminals ENVIRONMENTAL 0 to 55 C (32 to 131 F), 0 to 95% RH, non-condensing CERTIFICATIONS Pending STANDARD PROGRAM SPECIFICATIONS The AquaLynx Model 200 ADX is equipped with a standard monitoring and control program suitable for most applications. FUNCTIONS Alarming Functions Adjustable time delay for all alarms Normal and latch operation on all alarms High and low setpoints for sensor alarms Data logging of all points for alarm changes or interval recording function Control Functions Selection of sensors will auto-populate screens Analog output recorder function from sensor 1 or 2 Manual analog output (input 0-100% to output 4-20mA) Analog output PID control; includes PID auto-tune and editable parameters Assignable relays for control and alarm output. Relays can be configured to run: From Digital Input From Sensor High or Low Setpoints On Interval Timer Hysteresis control (rising or falling is set by connection on the form C relay) Data Logging / SD Card All functional data points can be logged. Loggers initiated by individual on screen on/off switches. Sensor Record Interval records sensor data based on a settable time interval function Record Alarm Events Logs any change in alarm conditions when active Output Record Records all DO and AOs as well as their settings info Password changes automatically recorded OPERATOR INTERFACE Intuitive easily navigated screens Alarm status screens for alarm indication Data display screens for sensors, discrete inputs, relay outputs, and analog outputs Password protection for calibration and user settings COMMUNICATION Modbus RTU Slave on RS-232 Port Modbus RTU Slave or Master on RS-485 Port (1) 2 ports may be added for nominal fee: 1 Serial/Ethernet/ Profibus and 1 CANbus. CUSTOM PROGRAMMING (2) Custom programming is also available from RODI Systems for a nominal fee. 2

3 Serial Ports AquaLynx 200 ADX One, RS232/RS485 IO Supported Serial Sensor Input* Operator Interface Real Time Clock Digital: 4 Input, 24 VDC, isolated; 4 Output, Form C Relays, 2 VAC/30 VDC Analog: 2 Output, 12 bit 4-20mA, Isolated Two, any combination of: Dissolved Oxygen Sensor; Total Suspended Solids Sensor; Turbidity Sensor Touchscreen Display: 4.3 inch, color PLC RTC, Backed with Lithium Battery, 10-Year Life Power Input (Power Supply): VAC; 0.8A/0.6A Max.; <25A/<50A Inrush (@115/230 VAC) Components (Output): 24 VDC; 1.25A; 30W (Max.) Ports Protocols Enclosure Environmental Conditions Certifications Supplied with mini-usb programming port,1 SD card port and 1 RS232/RS485 2 ports may be added: 1 Serial/Ethernet/Profibus and 1 CANbus MODBUS; CANbus (1) (2) : UniCAN (1) (2) ; Ethernet / IP (1) Additional charge may apply; (2) Requires communication expansion module. Wall Mounted, Polycarbonate: UL 508A, UL 50 and UL 50E Types 1, 2, 3, 3R, 4, 4X, 12 & 13 CSA C22.2 No. 94 Types 1, 2, 3, 3R, 4, 4X, 12 and 13 Complies with: EN / IEC and Type IP66 & RoHS directive Dimensions: 13.5 x x to 55 C (32 to 131 F), 0 to 95% relative humidity, non-condensing. Pending The System Easy to use HMI auto-populates selected sensors while displaying key data on the main HOME screen. The arrow buttons allow the user to cycle through screens, all other main screens have a dedicated HOME button, physical ESC key will also bring user back to HOME. All main function pages displayed on HOME screen for direct navigation to desired screens. Password screen allows the user to unlock password protected functionality and configure data-log, comms and sensors. NOTE: Images displayed in this document are for illustration purposes only. and appearance are subject to change without notice. 3

4 Dissolved Oxygen Sensor These sensors have been designed to measure dissolved oxygen based on fluorescent technology. The sensor is available for both submersible and in-pipe (in-line) installations. This sensor outputs a string of data that is then communicated to the connected AquaLynx monitor. Parameters include dissolved oxygen, temperature measurement as well as a variety of other parameters such as pressure, salinity, and RH. For In-line The measurement is provided in PPM or % of O2 air saturation with automatic temperature compensation. These sensors are precalibrated from the factory and ready to use C-I The most common applications for these sensors include: water quality monitoring, municipal and industrial wastewater treatment, and aquaculture. Principle of Operation A light beam of specific wavelength is sent to a special fluorescent layer in contact with the sample. For Submersible The absorbed light energy is partially released as a light pulse with a higher wavelength. (fluorescence) If oxygen molecules are in contact with the sensing layer the fluorescence is reduced. (quenching) 2883-C-I By measuring the amount of quenching it is possible to determine the oxygen concentration. The advantages of this measuring method are the absence of electrolyte and membrane, the possibility to measure the oxygen concentration in water or in air, and a good sensitivity in a low oxygen concentration. Technical specifications: Mounting Options For most accurate results it is recommended to install the sensor in the overflow cells. The cell is equipped with a flow regulator to avoid air bubbles, which can come from samples under pressure. For in line sensors only. Part No. 952 Scale: 0-20 ppm or 0-200% air This sensor can also be installed directly in-line through the use of a special tee assembly. This tee assembly can be piped in to any 1 1/2 PVC/ CPVC tee and is threaded at the fitting for ease of access to the probe. For in line sensors only C-I Temp. Compensation: automatic This sensor also comes in a submersible configuration. The submersible sensor comes with an auto-clean feature which cleans the sensor by use of external pressure on the nozzle. (3 bar max.). The submersible probe can be threaded into a female adapter and submerged. The illustration on the left shows a typical application for a submerged sensor. NOTE: All images for illustration purposes ONLY; assembly may be required. Sensitivity: ± 0.5% of scale Response Time: 95% < 60s Power: 24VDC from AquaLynx Load: 600 Ohm 24Vdc Secondary Parameters: Pressure, Salinity, RH Room Temp.: C ( F) Max. Pressure: In-line C Submersible C Dimensions: In-line: L 143mm(5.63 ), D 40mm (1.57 ) Sub.: L 165mm(6.5 ), D 60mm (2.36 ) Body: PVC Cable: 10m (100 m max.) Protection: IP 68 4

5 Turbidity Sensor (0-400NTU) These sensors have been designed to measure turbidity based on the nephelometric method (ISO 7027 EN27027). The sensor is available for both submersible and in-pipe (in-line) installations. This sensor outputs a string of data that is then communicated to the connected AquaLynx monitor. The measuring system consists of an infrared light source, 90 degree scattered light detector, and a detector of the clean lens status. For In-line 2639-C-I The measurement is provided in NTU, this sensor has a range of either NTU, NTU, or NTU. Upon order and selection of range. These are pre-calibrated in the factory and ready to use. The most common applications of this sensor include: water quality monitoring, municipal and industrial water and waste water treatment, and aquaculture. Principle of Operation For Submersible The turbidity follows the back nephelometric method (ISO 7027 EN27027). A light beam is sent to the sample through an optical lens. The 90 degree scattered light by suspended particles is collected by the probe through a second lens and is converted into an electric signal proportional to the turbidity of the sample C-I The probe uses an infrared light ensuring that the measurement is not affected by the color of the sample. Mounting Options: For most accurate results it is recommended to install the sensor in the overflow cells. The cell is equipped with a flow regulator to avoid air bubbles, which can come from samples under pressure. For in line sensors only. 952 This sensor can also be installed directly in-line through the use of a special tee assembly. This tee assembly can be piped in to any 1 1/2 PVC/CPVC tee and is threaded at the fitting for ease of access to the probe. For in line sensors only C-I This sensor also comes in a submersible configuration. The submersible sensor comes with an autoclean feature which cleans the sensor by use of external pressure on the nozzle. (3bar max.). The submersible sensor can be threaded into a female adapter and submerged. The illustration on the left shows a typical application for a submerged sensor. Technical specifications: Scale: / / NTU Sensitivity: % Zero: ± 0.4 NTU all scales Power: 24VDC from AquaLynx Load: 600 Ohm 24Vdc Room Temp.: C ( F) Max. Pressure: In-line C Submersible C Dimensions: In-line: L 143mm(5.63 ), D 40mm (1.57 ) Sub.: L 165mm(6.5 ), D 60mm (2.36 ) Body: PVC Cable: 10m (100 m max.) Protection: IP 68 NOTE: All images for illustration purposes ONLY; assembly may be required. 5

6 Turbidity Sensor (0-10,000 FTU) These sensors have been designed to measure high turbidity and suspended solids based on back scattering technology. The sensor is available for both submersible and in-pipe (in-line) installations. This sensor outputs a string of data that is then communicated to the connected AquaLynx monitor. The measuring system consists of an infrared light source, scattered light detector, and a detector of the clean lens status. For In-line 2882-C-I The measurement is provided in FTU, this sensor has a range of either FTU, 0-1,000 FTU, or 0-10,000 FTU. Upon order and selection of range, the sensors are pre-calibrated in the factory and ready to use. The most common applications of this sensor include: water quality monitoring, municipal and industrial water and waste water treatment, and aquaculture. Principle of Operation The turbidity and suspended solids measurement follows the back scattering method. For Submersible A light beam is sent to the sample through an optical lens. The back scattered light by suspended particle is collected by the probe through a second lens and is converted in to an electric signal proportional to the turbidity of the sample C-I The probe uses an infrared light ensuring that the measurement is not affected by the color of the sample. Mounting Options For most accurate results it is recommended to install the sensor in the overflow cells. The cell is equipped with a flow regulator to avoid air bubbles, which can come from samples under pressure. For in line sensors only. 952 This sensor can also be installed directly in-line through the use of a special tee assembly. This tee assembly can be piped in to any 1 1/2 PVC/CPVC tee and is threaded at the fitting for ease of access to the probe. For in line sensors only C-I This sensor also comes in a submersible configuration. The submersible sensor comes with an autoclean feature which cleans the sensor by use of external pressure on the nozzle. (3 bar max.). The submersible sensor can be threaded into a female adapter and submerged. The illustration on the left shows a typical application for a submerged sensor. Technical specifications: Scale: / / FTU Sensitivity: % Zero: ± 10 FTU all scales Power: 24VDC from AquaLynx Load: 600 Ohm 24Vdc Room Temp.: C ( F) Max. Pressure: In-line C Submersible C Dimensions: In-line: L 143mm(5.63 ), D 40mm (1.57 ) Sub.: L 165mm(6.5 ), D 60mm (2.36 ) Body: PVC Cable: 10m (100 m max.) Protection: IP 68 NOTE: All images for illustration purposes ONLY; assembly may be required. 6

7 Suspended Solids Sensor These sensors have been designed to measure suspended solids. This sensor outputs an analog signal that is communicated to the connected AquaLynx monitor. This system contains a self cleaning suspended solids detector. The sensors sapphire glass detection window comes with a self cleaning wiper which wipes on power up and every ten minutes thereafter. The measurement is provided in mg/l. This sensor has a range of 0-50, mg/l. These are pre-calibrated in the factory and ready to use. The most common applications of this sensor include: water quality monitoring, municipal and industrial waste water treatment and aquaculture. Mounting Options: This sensor should be mounted facing against the water flow to prevent buildup on the detection window and keeping it clean and clear for an accurate reading. It should not be facing any surface or strong light as they may cause the sensor to read inaccurately. The mounting attachment provided securely attaches the sensor to the pipe to prevent it from rotating due to water flow. A non corrosive pipe with an external diameter of 34 mm is required. Pipe is not included. To install, wrap the cable protective cover at the sensor end of the cable. Secure the sensor to the mounting bracket and attach the bracket to the pipe. Once bracket is in place on the pipe secure the cable to the pipe through use of zip ties or similar tie down method. Technical Scale: 0-50,000 mg/l Sensitivity: 3% or 300 mg/l whichever is greater Power: 24 VDC from AquaLynx Cleaning: Auto wiper cleaning system Clean Intervals: On start, once every 10 minutes thereafter Room Temp.: 0-40 C ( F) Max. Depth: 2m underwater Dimensions: L= 146 mm (5.75 ) W= 48 mm (1.89 ) Body/Materials: SS316, Sapphire Glass, Fluorocarbon Rubber, EPDM, PVC Cable: 9m Protection: IP C-I NOTE: All images for illustration purposes ONLY; assembly may be required. 7

8 AquaLynx 200 ADX Applications The following images provide a few basic examples of how the AquaLynx 200 ADX can be used with a variety of dissolved oxygen, turbidity, and total suspended solids sensors from RODI Systems. The sensor combination is user defined within the HMI along with a wide variety of settings making the AquaLynx 200 ADX a very versatile monitoring and control system. The example illustrated below shows a submerged membrane filter process in which the AquaLynx 200 ADX is being used to monitor total suspended solids in the tank and turbidity on the filtrate line. The functionality is completely user defined. For example, an alarm can be set for either high TSS, high turbidity or both. Concentrate to pre-treatment (used in MBR & High TSS applications) TSS Blower Filtrate Pump Turbidity Filtrate Water Tank 1 Tank 2 Sprinkler Pump Backwash Pump Backwash Tank Chemical Pump An example of the same process with the AquaLynx 200 ADX being used to monitor dissolved oxygen in the tank and turbidity on the filtrate line. If needed the user could configure the AquaLynx 200 ADX to turn on a discrete or analog output based on either sensor setpoint. PID control could be used to control blower speed to maintain the proper dissolved oxygen level. Concentrate to pre-treatment (used in MBR & High TSS applications) Dissolved Oxygen Blower Filtrate Pump Turbidity Filtrate Water Tank 1 Tank 2 Sprinkler Pump Backwash Pump Backwash Tank Chemical Pump 8

9 AquaLynx 200 ADX Applications This final example shows the submerged membrane filter process in which the AquaLynx 200 ADX is being used to monitor dissolved oxygen sensors in both tanks. Any combination of two sensors (turbidity, TSS, and DO) are capable of being activated through the sensor configuration, whether it be a selection of two different sensor types or two of the same sensor. All the monitoring and control functionality of the AquaLynx 200 ADX is readily available at the tap of a screen. Concentrate to pre-treatment (used in MBR & High TSS applications) Dissolved Oxygen Dissolved Oxygen Blower Filtrate Pump Filtrate Water Tank 1 Tank 2 Sprinkler Pump Backwash Pump Backwash Tank Chemical Pump NOTE: Images displayed in this document are for illustration purposes only. and appearance are subject to change without notice ph faxwww.rodisystems.com info@rodisystems.com 936 Highway 516 Aztec, NM v 1.02 AquaLynx is a registered trademark of RODI Systems Corp. 9