RIU3 User Manual
Contents
1. 1 Chl input connector i A 2 pin connector for the first channel for a probe input Required only for certain probe types such as a Dissolved oxygen Temperature probe 2 Ch2input connector i A 2 pin connector for the second channel for a probe input Required only for probes with multiple channels such as a Dissolved oxygen Temperature probe 3 Isolated DC output for auxiliary probe power i A 2 pin connector used to provide 24 VDC isolated auxiliary probe power This can also be factory configured for 10 VDC as necessary See page 6 for wiring information 4 Auxiliary RS485 input connector i A 2 pin connector for RS485 probe inputs 5 Power amp RS485 inputs i 5 pin connectors Pins 1 and 2 are used to connect DC power to the RIU3 Pins 3 and 4 are used to connect the Modbus RS485 signal to the RIU3 Pin 5 is used to connect the shield of the cable to the RIU3 ground See page 6 for wiring information 6 Data Tx amp Rx LEDs i These LEDs indicate Modbus RS485 communications The Rx LED will blink when a Modbus message is received by the RIU3 and the Tx LED will blink when a Modbus message is transmitted by the RIU3 7 Relay output connectors i 3 pin connectors used to connect the relay output to an external device Normally open or normally closed configurations can be used See page 6 for wiring information 8 SPDT relays i Single pole double throw relays rated for up to 24VDC 10 A The relay status is cont2. EEEE o gt T iv PRESS THE RETURN BUTTON FROM ANY SCREEN L WITHIN THE RED DASHED LINE TO REVERT TO THE CONTROL MENU ABOVE POINT FOUR RIU3 Remote Monitor Controller Installation and User s Guide 15 O OO r gt L S PRESS THE RETURN BUTTON FROM ANY SCREEN Refer to Diagnostics Table for troubleshooting TBD TO REVERT TO THE SELECTION MENU POINT FOUR RIU3 Remote Monitor Controller Installation and User s Guide 16 PRESS THE RETURN BUTTON FROM ANY SCREEN WITHIN THE DASHED LINE TO REVERT TO THE SELECTION MENU POINT FOUR RIU3 Remote Monitor Controller Installation and User s Guide 17 CONTROL BLOCK OPERATION The RIU3 control blocks take inputs from the probe parameters and control the state of the relays according to some user selected set points The user can configure the input parameters control type set points delays and output relays for each control block The user selectable parameters are described in more detail below User Selectable Control Block Parameters 1 Type The Type can be set either to Control or Alarm In alarm mode the relay output behaves as described in Figure 1 In control mode the relay output behaves as described in Figure 2 If the process value
3. gt PENTAIR POINT FOUR RIUS REMOTE MONITOR CONTROLLER INSTALLATION AND USER 5 GUIDE IMPORTANT SAFETY INSTRUCTIONS READ AND FOLLOW ALL INSTRUCTIONS SAVE THESE INSTRUCTIONS CUSTOMER SERVICE TECHNICAL SUPPORT If you have questions about ordering Pentair Aquatic Eco Systems replacement parts and products please use the follow ing contact information Customer Service 8 A M to 4 30 PM Eastern and Technical Support Pacific Times Apopka Florida 8 A M to 4 30 P M ET Phone 800 831 7133 Phone 877 347 4788 Fax 800 284 4151 Web site Visit www pentairaes com or www pointfour com to find information about Pentair products TABLE OF CONTENTS OVERVIEW 3 SYSTEM COMPONENTS SYSTEM WIRING 5 TYPICAL RIU WIRING CONFIGUATIONS 6 RIU3 FRONT PANEL 7 TYPICAL RIU SYSTEM SETUP 8 RIU3 OPERATION 9 CONTROL BLOCK OPERATION 17 PROBE CALIBRATION 19 APPENDIX 21 NOTES 26 P N 354610 Rev B 9 17 13 POINT FOUR RIU3 Remote Monitor Controller Installation and User s Guide OVERVIEW This manual is designed as a guide to assist users in becoming familiar with the various functions of the RIU3 remote interface unit Each section of this manual is set up to easily guide users through all stages of installation setup and maintenance Starting from unpacking and inspecting the box this manual will explain all parts and functions of the system to allow users to get the most out of the RIU3 for all their system monitori
4. C 0 and 20 C would also work ii Create a sample with water at the temperature of the first calibration point For example if the first calibration point is 0 C an ice bath can be used Place the probe in the sample and allow the temperature to stabilize for at least 30 minutes iii On the RIU3 press and hold the Return button for 3 seconds to enter the configuration menu iv Using the Down button scroll down to the Cal menu and click the Enter button v Scroll to Temp and click the Enter button vi Scroll to 2 point and click the Enter button vii The current value of the degC PV will be displayed You will want to change this to match the value of the first calibration sample Use the Up and Down buttons and the Enter button to do this viii Once you have entered the temperature value and clicked the Enter button once more the RIU3 will attempt to capture the calibration If the probe reading is stable and within reasonable limits the calibration point will be captured ix Create a sample with water at the temperature of the second calibration point For example if your second calibration point must be around 20 room temperature water can be used with a reference temperature sensor to measure the actual water temperature Place the probe in the sample and allow the temperature to stabilize for at least 30 minutes x Onthe RIU3 the second calibration point should be displayed You will want to change this to match the va
5. GND D D SHID V GND D D SHLD V GND D D SHLD Digital Output ie Autodialer Input 1 2 Live Contact RIU or External Power Live Contact External Power Live Contact RIU Power Digital Output c N ie Solenoid Valve Digital Output ie Solenoid Valve POINT FOURTM RIU3 Remote Monitor Controller Installation and User s Guide RIU3 FRONT PANEL PENTAIR AQUATIC ECO SYSTEMS l Backlit LCD Display Up button Enter button Return button Down button POINT FOUR RIUJ REMOTE INTERFACE UNIT 1 LCD Display i 2x8 Backlit LCD display 2 Up Button i Scrolls up through menu options or input characters or in the main menu toggles between display parameters 3 Down Button i Scrolls up through menu options or input characters or in the main menu toggles between display parameters 4 Return Button i p 5 i This button can be held for 3 seconds to enter into the RIU3 configuration menu While in the configuration this can be ressed to return to the previous menu page Enter Button This button is used while in the configuration menu to confirm a selection or user input See page 9 for more information about navigating the RIU3 menu POINT FOUR RIU3 Remote Monitor Controller Installation and User s Guide TYPICAL RIU SYSTEM SETUP M
6. PV is within the user defined high and low set points the system condition is normal If the process value PV fluctuates out of the alarm bandwidth above the high set point or below the low set point the system will go into alarm This is indicated on the bottom left corner of the home screen by flashing the word ALARM This is also indicated on each individual channel by the alarm symbol A delay time can be added to the setpoint E G A fish plant touches the probe sending the conditions out of the normal bandwidth resulting in false alarm conditions The delay time allows the condi tions to return to within the normal bandwidth If the process value PV is within the user defined high and low set points the system condition is normal If the process value PV fluctuates below the low set point the system will go into a control situation This turns on or off depending on normal conditions a relay The relay will remain on until the process value PV reaches the high set point at which point it will switch off The process can be reversed so that a relay turns on when the pro cess value PV fluctuates above the high setpoint depending on the customers needs This is indicated on each individual channel by the orange RLY ON indicator A delay time can be added to the setpoint E G A fish plant touches the probe sending the conditions out of the normal bandwidth resulting in false control conditions The delay time al
7. brands may be the trademarks or registered trademarks of those third parties Because we are continuously improving our products and services Pentair reserves the right to change specifications without prior notice Pentair is an equal opportunity employer 2014 Pentair Aquatic Eco Systems All rights reserved This document is subject to change without notice P N 001 REV A 4 10 14
8. to change the value 0 9 Press the check to go to the next digit Press the return key to go to the previous digit Pressing the return key from the 1st digit returns to the menu IF YOU DO NOT TOUCH ANY KEYS AFTER 60SEC THE UNIT WILL REVERT TO THE MAIN DISPLAY PRESS THE RETURN BUTTON FROM ANY SCREEN WITHIN THE DASHED LINE TO REVERT TO THE SELECTION MENU POINT FOUR RIU3 Remote Monitor Controller Installation and User s Guide 12 Example of selected Ch displayed PRESS THE RETURN BUTTON FROM ANY SCREEN WITHIN THE DASHED LINE TO REVERT TO THE SELECTION MENU POINT FOUR RIU3 Remote Monitor Controller Installation and User s Guide 13 Select Control Block Control Block channel Sensor name toggled every second with engineering units In this example mg L PRESS THE RETURN BUTTON FROM ANY SCREEN WITHIN THE BLACK DASHED LINE TO REVERT TO THE SELECTION MENU POINT FOUR RIU3 Remote Monitor Controller Installation and User s Guide Configure Control Block d iv Y _ Q iG Changing the Values 1 Hi SP 2 ress the up or down arrow to change the value 0 9 ress the check to go to the next digit ress the return key to go to the previous digit essing the return key twice from the 1st digit returns to the menu D gt D D 20 e Y A
9. to enter the configuration menu iii Using the Down button scroll down to the Cal menu and click the Enter button iv Scroll to Oxy and click the Enter button v Scroll to 1 point and click the Enter button vi The current value of the Sat PV will be displayed You will want to change this to read 100 Sat since the probe is currently in the air Use the Up and Down buttons and the Enter button to do this vii Once you have entered 100 and clicked the Enter button once more the RIU3 will attempt to capture the calibration point and calculate the Slope If the probe reading is stable and within reasonable limits the calibration point will be captured and a Cal OK message will be displayed viii Use the Return button to return back to the main display The 96Sat PV should now read 100 96Sat ix Theprobe can now bereturned to use You will have to allow another 30 minutes for the probe temperature to stabilize After this the probe will now be reading accurately POINT FOURTM RIU3 Remote Monitor Controller Installation and User s Guide 20 b Temperature Calibration The temperature channel is factory calibrated and in general should never need to be re calibrated A 1 point calibration may be completed to ensure consistent readings between different probes A 2 point calibration may also be completed however this can be time consuming and will typically not be as accurate as the existing factory calibration To complete a 1 point t
10. to high action the control block will behave inversely to what is described on page 17 POINT FOUR RIU3 Remote Monitor Controller Installation and User s Guide 19 PROBE CALIBRATION The calibration procedure will vary depending on the type of probe being used In general either 1 point or 2 point calibrations can be done Depending on the probe type 1 or 2 point calibrations may be recommended PV V_raw Offset xSlope PV Process variable this is the value that is displayed on the main screen with the appropriate engineering units Vraw Raw voltage input this is the raw voltage value measured by the RIU3 from the probe Offset The offset value is calculated by the RIU3 during calibration Slope The slope value is calculated by the RIU3 during calibration To perform a typical 1 point calibration the user places the probe in an environment with a known value for the measured parameter The user then enters the known value into the RIU3 and completes the calibration The RIU3 will then calculate the Offset value so the PV matches the value that the user entered for the 1 point calibration To perform a typical 2 point calibration the user places the probe in an environment with a known value for the measured parameter The user then enters the known value into the RIU3 and captures the first calibration point Next the user places the probe in a different environment with a different known value for the measured paramete
11. 1s uppermost and screw the cap onto the top part Excess electrolyte and air should dribble out at the flat IT IS IMPORTANT THAT THE PROBE IS FILLED COMPLETELY WHEN YOU ARE CERTAIN THAT THE PROBE IS FILLED COMPLETELY TIGHTEN THE CAP HARD 23 L COMPLETELY DRY b Won b NEW OR 6 RENOVATED CAP FLAT L 4 TURN After renovation the probe can be regarded as new It should be hung up in air to stabilize for at least an hour before calibration It is advisable to re calibrate after a day or two The output between the blue and brown leads should be between 20 and 40 millivolt with the probe in air POINT FOURTM RIU3 Remote Monitor Controller Installation and User s Guide 24 new membrane can easily be fitted to the cap see the drawing The membrane must be flat if it wrinkles remove it and try again with a new one It is important that all parts are clean and dry A cap must not be re used without replacing the membrane as the membrane stretches to fit the cathode and will not fit perfectly a second time MAKE SURE YOU USE THE MEMBRANE AND NOT THE BACKING PAPER The backing paper is grey 1 Unscrew ring 3 Assemble as shown Ring amp discard used _ membrane 1 A THE O RING GOES C and O ring CO UNDER THE MEMBRANE O Ring CO 2 Clean and dry 4 Tighten the ring If the cap amp ring membrane wrinkles try again thoroughly with a new membrane 1 U
12. ULTI LINKED NETWORK PT4 LC Controller PT4 SYNC HMI Software PT4 RIU PT4 RIU www points eur eom www pointfeur com Data Link PWR Data Link PWR Probe Probe Auto Dialer Alarm Light perm PT4 RIU3 PT4 RIU3 Data Link PWR Flowmeter 3 Probe Flowmeter 7 Probe Manifold m Manifold A Alarm Light Alarm Light SINGLE UNIT CONTROLLER www pentairAES com Relay 1 Control System Alarm Light Relay 2 Control i9 Flowmeter Manifold Probe PC Data Link POINT FOUR RIU3 Remote Monitor Controller Installation and User s Guide RIU3 OPERATION The main screen of the RIU3 displays the current values read from the probe Using the up and down keys toggles between additional probe values and shows the status of the relays either being on or off Warnings conditions are also displayed on the Main screen Holding down the return arrow for three seconds brings you into the settings menu The settings menu allows you configure multiple values and parameters such as alarm conditions relay control type probe calibration backlight set up and system diagnostics The following chapter will discuss the basic operational features and menu structure of the RIU3 Additional chapters in this manual will explain advanced features such as configuring relay control types two point calibration and troubleshooting MAIN DISPLAY Main Display PV Values Error Di
13. e some years you cannot calibrate up to the correct value or the probe is not completely full shake it close to your ear if you can hear liquid it is not full Please note the following points Commander probes are type 3 and have 3 dots on the top part near the cable gland They have type 3 anodes and electrolyte The electrolyte of a probe with type 3 chemistry 1s blue to start with but soon becomes very dark and deposits are found inside the probe If there are three dots on the top of the probe and very dark deposits inside it you can be sure that it is a type 3 probe with type 3 chemistry Commander probes use 1OXSS006 membranes with grey backing paper To replace the membrane and renovate the probe proceed as follows 1 Remove the probe rinse it and unscrew the cap If it sticks tap the side of the probe gently with a hammer then try again Discard the electrolyte rinse the cap and top part clean off any brown or black oxide deposits 2 Inspect the anode If the probe was filled correctly when it was last renovated it will be easy to clean the dark deposits from the anode use a nail brush or similar If the probe was not filled completely the anode will be very corroded and must be replaced Check that the nut under the anode 15 tight before fitting a new anode Wash the anode in soapy water before use to remove any protective oil Make sure that you use type 3 anodes on the probe 3 Check the cathod
14. e and remove any deposits using the plastic abrasive pad supplied with the probe or a little wet or dry emery paper grade 600 The cathode MUST NOT BE POLISHED CLEAN amp CHECK ANODE CLEAN CATHODE Plastic scouring pad POINT FOURTM RIU3 Remote Monitor Controller Installation and User s Guide 4 Rinse and dry the top part 5 We advise that the following easy check on the probe 1s performed the Dry Probe Check Dry the probe especially the cathode and area around it completely then observe the measurement or output signal the probe should have zero output You can also measure on the probe leads when the probe is completely dry there should be no voltage mV between the brown and blue leads you can disconnect the leads and measure as below Contact Point Four Systems technical support if this 1s not the case BROWN Plus millivolt 0 mV with the probe open and completely dry BLUE Minus millivolt BLACK Resistance 10 kilohm at 30 C 15 kilohm at 20 C 20 kilohm at 10 C 25 kilohm at 0 C 6 Fill a new or renovated cap to the brim with electrolyte the excess electrolyte helps remove any air bubbles The cap is renovated by fitting a new membrane and 0 ring see overleaf The process is very easy 7 Locate the flat section machined into the thread Lower the upper part into the cap and turn the cap half a turn to engage the thread Tilt the probe 15 so that the flat
15. emperature calibration for this probe do the following i Ensure the probe temperature has stabilized in the measurement sample for at least 30 minutes Also ensure the reading of a reference temperature sensor in the same sample has stabilized ii On the RIU3 press and hold the Return button for 3 seconds to enter the configuration menu ili Using the Down button scroll down to the Cal menu and click the Enter button iv Scroll to Temp and click the Enter button v Scroll to 1 point and click the Enter button vi The current value of the degC PV will be displayed You will want to change this to match the value of the reference temperature sensor Use the Up and Down buttons and the Enter button to do this vii Once you have entered the temperature value and clicked the Enter button once more the RIU3 will attempt to capture the calibration point and calculate the Offset If the probe reading is stable and within reasonable limits the calibration point will be captured and a Cal OK message will be displayed viii Use the Return button to return back to the main display The degC PV should now read the same as the reference temperature sensor To complete a 2 point temperature calibration for this probe do the following i Choose 2 calibration temperatures that cover the expected range of measurement temperatures For example if the sample temperature is expected to vary between 5 and 15 C choose calibration points 5 and 15
16. ks with oxygen dosing can be caused by wrong adjustment of PID settings wrong positioning of probe or poor mixing in the tank please contact Point Four Systems technical support POINT FOURTM RIU3 Remote Monitor Controller Installation and User s Guide 20 SPARES It 1s a good idea to make sure that you always have a supply of probe membranes and electrolyte A spare probe cap will enable a fast probe renovation After many years use about 10 years probes might need new anodes A complete probe can be stocked as spare 1OXS5134 IL Electrolyte for Commander probes type 3 1OXSS033 Type 3 Anode for Commander probes 002 Membrane retaining ring removal tools POINT FOURTM RIU3 Remote Monitor Controller Installation and User s Guide 26 NOTES POINT FOURTM RIU3 Remote Monitor Controller Installation and User s Guide gt PENTAIR 2395 APOPKA BLVD APOPKA FL 32703 877 347 4788 WWW PENTAIRAES COM All Pentair trademarks and logos are owned by Pentair Inc Pentair Aquatic Eco Systems POINT FOUR RIU3 are trademarks and or registered trademarks of Pentair Aquatic Eco Systems and or its affiliated companies in the United States and or other countries Unless expressly noted names and brands of third parties that may be used in this document are not used to indicate an affiliation or endorsement between the owners of these names and brands and Pentair Aquatic Eco Systems Those names and
17. lows the con ditions to return to within the normal bandwidth A delay can also be added to the high setpoint which allows the system overdose which may be applicable in some cases POINT FOUR RIU3 Remote Monitor Controller Installation and User s Guide HI SETPOINT PV LOW SETPOINT Alarm Control Output M Alarm Relay Active ON EE Alarm Relay Inactive OFF Figure 1 Alarm Mode operation HI SETPOINT PV LOW SETPOINT Control Band Output MW Control Relay Active ON B Control Relay Inactive OFF Figure 2 Control Mode operation 18 2 Chin This is the input parameter for the control block The user will have the option to select from all available parameters for the specific probe being used 3 Relay This is the output relay for the control block The user will have the option to select between Relay 1 and Relay 2 4 HiSP This is the high set point as described in SectionAbove 5 LosSP This is the low set point as described in SectionAbove 6 Delay On The delay on defines how long in seconds the control block will be in Alarm or Control status before the relay output is activated 7 Delay Off The delay off defines how long in seconds the control block will be out of Alarm or Control status before the relay output is deactivated 8 Action The user will have the option to select between High and Low When set to low action the control block will behave as described on page 17 When in set
18. lue of the second calibration sample Use the Up and Down buttons and the Enter button to do this xi Once you have entered the temperature value and clicked the Enter button once more the RIU3 will attempt to capture the calibration If the probe reading is stable and within reasonable limits the calibration point will be captured The new Slope and Offset values will be calculated and a Cal OK message will be displayed xii Use the Return button to return back to the main display The degC PV should now read the same as the reference temperature sensor POINT FOURTM RIU3 Remote Monitor Controller Installation and User s Guide 21 APPENDIX Appendix Specific Probe Manuals OxyGuard Commander Dissolved Oxygen Temp Probe Maintenance Instructions POINT FOURTM RIU3 Remote Monitor Controller Installation and User s Guide 22 DO PROBES CHECK amp MEMBRANE REPLACEMENT The probe s membrane should be wiped clean from time to time If you observe erratic DO measurement at a site where you expect steady readings there can be a fault in the cable or connection If you experience erratic readings you can try exchanging the probe with one that works well to help localize the cause of the fault If the probe has been in use for years use the following procedure to change the membrane the procedure will completely renovate the probe The probe should not be taken apart unless the membrane is damaged or after long us
19. ng needs The PT4 RIU3 is a field mounted single sensor transmitter controller The unit is compatible with a variety of water quality probes such as dissolved oxygen temperature and pH For a full list of compatible probes see Table1 The RIU3 is equipped with a large font 8 x 2 backlit display so the user can view the sensor readings The unit contains two SPDT 10amp relays to be used for alarm and or control outputs The control blocks can be configured as described on page 17 Probe calibration can also be done via the RIU3 interface as described on page 19 The RIU3 uses IP67 rated cable glands for the power data and probe connections sealing the unit for wet environments Although the RIU will function as a standalone controller up to 99 units may be daisy chained for a network connection This allows the user to collect manipulate and control all of the data via the PT4 LC Controller or using the PT4 Sync HMI Software Windows Based Table 1 RIU3 compatible probes TGP lig i AP BP Gomi o senos mv fin Toroidal Conductivity w Sensorex uS cm 4 20 mA 15 53020 transmitter ISXCOTCSMA Other probes available upon request Weatherproof Enclosure NEMA 4x IP65 Rated 2 Relay Outputs Alerting Alarm Conditions via Light Siren or SMS and Dosing Oxygen or Controlling Blowers Easy to Read Large Font Backlit Display User Selectable Control Tank Side Sensor Calibration Vari
20. nscrew ring discard used membrane and O ring 2 Clean and dry cap amp ring thoroughly 3 Assemble as shown 4 Tighten the ring If the membrane wrinkles try again with a new membrane THE O RING GOES UNDER THE MEMBRANE FAULT FINDING 1 If after 1 to 3 years use you have difficulty in calibrating the probe renovation 1s indicated Perform the Dry Probe test during renovation to check it as stated in the instructions 2 If you experience erratic readings or if there are problems with the temperature measurement you can try exchanging the probe with one that is connected to terminals to the left or right of the problem probe 3 If the fault moves with the probe check the wiring carefully before replacing the probe You can try connecting a spare probe that you are certain works well directly to the DO meter then to the junction box nearest the point of measurement If the wiring 1s OK replace the probe 4 If the fault stays on the same channel exchange the DO input module with one to the right or left If the fault now moves replace the DO input module 5 If the fault still stays in the same place contact Point Four Systems technical support When you have corrected any fault remember to re calibrate the probe Remember that calibration needs steady temperature PLEASE CALIBRATE CAREFULLY NO MEASUREMENT IS MORE ACCURATE THAN THE CALIBRATION You should also note that DO measurements that fluctuate regularly oscillate in tan
21. ous Sensor Input Types Local Control Setup nn Alarm Setpoint B PID Function Salinity Multiple System TGP Congurations Optical DO Single Unit Controller or Multi linked Network up to 99 units POINT FOUR RIU3 Remote Monitor Controller Installation and User s Guide System Components RIU LCD Display 4x20 Backlit Alpha Numeric 2 4 Button Foil Switch 3 PG9 Cable Gland for Probe Input 4 PG9 Cable Glands for Power and Data connections x2 5 PG7 Cable Glands for Relay Outputs x2 6 Optional Enclosure Mounting Feet x4 SYSTEM COMPONENTS System Specifications 1 Power 12 24 VDC 180 mA max 2 Auxiliary power for loop powered probes Onboard isolated 24 VDC loop power supply 3 Input Inputs are factory configurable for probes listed in Table1 Additional probe types are available upon request 4 Outputs Two SPDT 10 Amp relays user configurable RS 485 MODBUS communications 5 Environmental IP67 water tight enclosure sealed cable glands 6 Dimensions 125x125x75 mm POINT FOURTM RIU3 Remote Monitor Controller Installation and User s Guide SYSTEM WIRING EXPANSION n s f PENTAIR AQUATICECO MI RIU Rev 5 0 PIN SELFTEST Pe Data Tx Rx status LEDs SPDTRdas _ LOOPBACK Disconnect Relays First RELAY2 O NO C NC
22. r The user enters the know value into the RIU3 again and captures this value The calibration then completes by calculating both the Slope and the Offset so the PV matches user entered values with the captured raw voltage inputs The calibration procedure is slightly different for galvanic dissolved oxygen probes Since these probes have a true zero the Offset is always zero In this case it is never necessary to complete a 2 point calibration During a 1 point calibration the Offset will not be modified it will remain at zero and instead the Slope will be calculated so the PV matches the value the user entered for the 1 point calibration Calibrating Specific Probe Types 1 OxyGuard Commander Dissolved Oxygen DO Temperature Probe a DO Calibration With this probe type the RIU3 will have 2 process variables corresponding to DO The engineering units for these PVs are Sat percent saturation and mg L In order to calibration the DO only the Sat PV must be calibrated The mg L PV will then be calculated based on the Sat and the Temperature readings A 1 point calibration should be done with the Sat PV since these probes have a true zero meaning the Offset will always be zero and only the Slope needs to be calculated To complete a 1 point DO calibration for this probe do the following i Place the probe in air Allow the probe readings to stabilize for 30 minutes On the RIU3 press and hold the Return button for 3 seconds
23. rolled by RIU3 control blocks which be configured through the Control menu using the 4 button foil switch See page 17 for control block configuration information POINT FOUR RIU3 Remote Monitor Controller Installation and User s Guide TYPICAL RIU WIRING CONFIGURATIONS Typical RIU Wiring Configurations 1 Wiring for use with PT4 LC or other SCADA system RIU A RIU B V GND D D SHLD V GND D D SHLD V GND D D SHLD V GND D D SHLD L To Additional RIUs PT4 LC or other SCADA System V 12 24 VDC V s 12 24 VDO RS 485 RS 485 RS 485 Signal Ground 2 Wiring for use with a PC RIUA RIU B V GND D D SHLD V GND D D SHLD V GND D D SHLD V GND D D SHLD DC Power Supply ZH To Additional V 12 24 VDO RIUs RS 232 to USB Adapter 49V GND D B D A RS 232 to 485 Converter Warning If the Data and Power wires are not connected to the appropriate terminals damage to the RIU3 may occur This will void the warranty Please ensure all connections are correct before powering up the unit RS 232 RS 485 ToPC e amp Relay Wiring Examples 1 DryContact Normally Open or Normally Closed Dry Contact Normally Open Dry Contact Normally Closed NO C NC NO C NC Digital Output ie Autodialer Input 1 V GND D D SHLD V
24. splay nn gt 7 lt Toggled every 2 sec gt Error Condition If more than 2 PV values displayed 2 Error Types per screen Example Highest ERROR 0 100 Sat Priority Low Volt High Amp Relay Status Example Lo mV Trim R1 ON Required R2 OFF Lowest Selftest Priority Required Hold for gt 3 sec M POINT FOURTM RIU3 Remote Monitor Controller Installation and User s Guide 10 External Chs MONIO NO Control Diags Main Display M L IF YOU DO NOT TOUCH ANY PRESS THE RETURN BUTTON KEYS AFTER 60SEC THE UNIT FROM ANY SCREEN WILL REVERT TO THE WITHIN THE DASHED LINE MAIN DISPLAY TO REVERT TO THE MAIN DISPLAY POINT FOUR RIU3 Remote Monitor Controller Installation and User s Guide 11 External channels are values required by the RIU3 that it does not produce Example BP is a required input value for an RIU3 configured for DO readings Example Ext XXX CH BPT Default Value 760 TEMP Default Value 20 SAL Default Value 0 EXTERNAL CH MENU Enter EXT value SET CH 760 cH value Displayed 6 1 Enter EXT value Other EXT Chs displayed gt if any Ol Exit LUE um Changing the Values XXX CH HHHH Press the up or down arrow
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