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User Manual - ProMinent Fluid Controls, Inc.

1. Key UP and ENTER Varying Cycles Key DOWN amp ENTER to select Yes 4 ai Varying Cycles requires seven setpoints 3 make up ranges and 3 corresponding cycles of concentration and the maximum tower sump conductivity Varying Cycles See the following page Yes Sidebar Varying Cycles Controls tower bleed on the ratio of the Tower to Make up conductivity The user selects the cycles of concentration for three ranges of make up conductivity and a maximum tower sump conductivity The controller measures the make up conductivity and controls bleed one of the three cycles of concentration If the tower sump exceeds the maximum conductivity the tower conductivity is used to control the bleed amp to reduce the sump conductivity Where Used If your make up changes seasonally or periodically and you have a 2 conductivity sensor installed in the tower make up line you can control using Varying Cycles Where Not Used 1 If the holding time or turnover time of the tower is long then the bulk of the tower water has not changed when the make up conductivity changes amp you may scale if hardness limited Long is site specific and a function of temperature water chemistry and treatment program 2 If the make up conductivity does not track the component that limits the maximum cycles For example hardness may increase with conductivity but silica may not amp you may be silica limit
2. f XX Special Control Holding Time ae Pump ad OFF Setpoints Configure lt Alarms Limits ee Special Controle Holding Time lt ana Special Control Holding Time l Period lt H 180 0 min Diagnostic Holding Time 22over 120m Sidebar If there is a very long time delay between adding a chemical and measuring it s effect at a sensor and or the controlling sensor average is correct but controlling on discrete sensor values is inaccurate the value of the controlling sensor can be averaged over a user defined Holding Time Example Feeding amine based on the condensate pH The Holding Time Special Control uses the logged values of the sensor averaged over the Holding Time to control an ON OFF pump or solenoid or a frequency controlled pump Example If the sensor logging period is 5 minutes and the Holding Time is 120 minutes then the most recent 24 values of the sensor are used for control Holding Time applies only to the first sensor in a control averaged over 1440 minutes max Aegis _User 7 08 23 AEGIS User Manual To view or modify the Special Control used on a pump or solenoid key UP or DOWN to the target Pump amp press ENTER In this example the Chemical 456 pump is powered by relay 5 and is currently OFF Key ENTER amp DOWN to Configure Then UP amp ENTER at Special Control Key DOWN amp ENTER to select Ti
3. Aegis User 7 08 83 AEGIS User Manual 8 6 Contact Set Controls In this example the Backwash solenoid Adjust Setpoints is powered by relay 4 Relay 4 is controlled by filter Pressure switch V Backwash lt 4 OFF To view or modify the Backwash setpoints key UP or DOWN to Backwash and press ENTER Setpoints pr Key ENTER Setpoints and then Test Prime UP or DOWN to the Setpoint you wish to modify In this example we ve already modified TurnON setpoint TurnON to 30 seconds 30 sec Key ENTER OFF Setpoint to modify Frequency controlled pumps will display p 5 then Feed and a setpoint in mL OFF Setpoint 0 sec Key UP or DOWN to change the underlined digit j Key RIGHT to move the underline Press ENTER to save the new OFF Setpoint Editing lt or Exit or EXIT to leave unchanged 900 sec gt Each time you modify you ll get an extra digit men So in this example you ll have to edit twice to get to 3 digits from the default 1 digit ana a nt See the following Contact Set Control Example Sidebar Contact Set Control Example A pressure switch connected to controller input V turns ON when the pressure drop across a sidestream filter indicates a need for a backwash sequence The TurnON Setpoint is set to 30 seconds to prevent transient states from triggering a backwash The OFF Setpoint is set to 900 seconds 15 minutes the time required to backwash the fi
4. Sidebar 2 7 Limiting Feed amp Alarms Alarms Limits Inhibitor 1 ON Owes 46sec lt ana Alarms Limits Diagnostic Mins Actuation 1500 0 min Minutes Day 1500 0 min OFF on alarm Pa Yes Midnight reset No Reset Alarm Yes Alarms None gt Alarms and Feed Limits prevent over feeds and or alert users to operating faults Examples A bleed cycle that exceeds 60 minutes indicates a mechanical electrical problem set Mins Actuation for the bleed 60 minutes An acid feed that exceeds 15 minutes indicates that we re out of acid the pump s unplugged or incorrectly adjusted the pH sensor isn t responding Aegis User 7 08 26 AEGIS User Manual 2 7 Limiting Feed amp Alarms Alarms Adjust Inhibitor 231 8 ON Owes 56 45mL To view or modify the Alarms Limits used on a pump or solenoid key UP or DOWN to the target Pump amp press ENTER In this example the Inhibitor 231 pump is frequency ane controlled by output 8 and is currently ON EERE amp Owes 56 4mL of feed Alarms Limits Pump Type t Key ENTER amp DOWN to Alarms Limits amp key ENTER and volume day P The Volume day limit is currently set 23 8 Gallons 23 8 G 4 Controllers set to metric units will display in Liters ee r Key ENTER to adjust Key RIGHT to move the underline and then Editi ngor Exit i UP or DOWN to change the number 01 5 G gt Pr
5. 7 Displays the number of relays and frequency Enable Outputs To Enable I O press ENTER and DOWN to Enable I O at the power up or day time display Key ENTER Enable I O controlled outputs available for enabling Key ENTER to select one 4 unused Sidebar Disabling I O Individual Inputs and Outputs are disabled by keying ENTER at the target I O display and selecting a Configure sub menu option I O in use by the controller for control or sensor compensation cannot be disabled Disabled I O does not display is not logged and does not appear in the selections used to compensate and configure other enabled I O Enabling Inputs Sensor inputs A Conductivity B Temperature and G 4 20mA Input are fixed A B amp G may be enabled or disabled but their function is fixed The function of Sensor inputs C D and E F is set by the installed sensor driver card to be another conductivity or a pH ORP corrosion rate Phantom Sensor inputs H to N are enabled as needed to for tank inventory and ppm calculations and to log manually entered drop counts Meter Volume and Contact Set Inputs O to V are enabled and configured for either water volume meters OR flowswitches boiler ON line contact sets level pressure switches Phantom Meter Volume or Contact Set inputs W to Z are enabled as needed as Rate to Volume and Copy Volume to target or as Mirror
6. Any change in timing or plumbing which effects the temperature at the start or end of the Measure time requires a conductivity sensor calibration Aegis _User 7 08 78 AEGIS User Manual 8 0 Flowswitches amp Contact Sets 8 1 Contact Sets 101 Flowswitch Provides a set of contacts that close when there is flow past or through the sensor Flowswitch contact sets are used to permit the operation of pumps and solenoids Interlock The contact set or flowswitch must be closed to allow operation If the contact set is open the pump or valve displays Interlocked Contact Set Controls Operating Issues Notes Flow OK to turn ON pump solenoid Contact set closes when flow measured Flowswitch or valve Default Connect to controller input S No Flow Immediately turns OFF an A manual RUN STOP switch may be used interlocked pump solenoid or valve in place of or in series with a Flowswitch Online OK to blowdown the boiler Contact set from boiler firing control or site Boiler and feed treatment chemicals automation system Online Usually closed when boiler on line Contacts Offline Immediately stop blowdown Defaults Boiler 1 online connects to S and chemical feed Boiler 2 online connects to T High Level Stop fill or start mix amp Level neutralize Level switches which use floats can Switches Low Level Stop chemical feed usually flip the float to change OPEN and or alar
7. Delay unless the fault is corrected Aegis _User 7 08 10 AEGIS User Manual Key UP or DOWN to the target Pump Valve or Solenoid then press ENTER Press ENTER Setpoints Setpoint types differ with control type and ON OFF or frequency Refer to the following page for typical chemical feed setpoints When the controlling conductivity exceeds 1200 uS the Tower Bleed will TurnON Key ENTER to adjust When the controlling conductivity falls below 1180 uS the Tower Bleed will TurnOFF Key ENTER to adjust Key RIGHT to move the underline and then UP or DOWN to change the number Press ENTER to change the setpoint or EXIT to leave unchanged Sidebar Relays controlled by sensors power Pumps and Solenoids ON and OFF Relays are outputs 1 to 5 Frequency controlled Pumps feed chemicals at varying rates Frequency controlled pumps are outputs 6 to 9 Tower Bleed solenoids use Setpoints 5uS to 20uS apart so that short bleeds are followed by short 1 3 View amp Adjust Setpoints Adjust Setpoints pe Tower Bleed 2 ON 16 2min Setpoints e Test Prime TurnON setpoint lt 1200 us C OFF Setpoint 1180 us t Editing lt or Exit 1190 us gt then r XY OFF Setpoint 1190 us feeds The resulting control has minimum variation in Inhibitor ppm and operates as close as possible to the target cycles of concentration
8. Verify Output Key ENTER to modify Inhibitor Pump 4 The optional Inventory input logs pumped volume In this example we ve selected the Inhibitor Tank We d previously renamed input L as Inhibitor Tank Inventory input Key ENTER to modify Inhibitor Tank Wait to verify is the time the controller waits for Verify M l f larming erify Meter to measure volume before alarming wait to verify lt 30 seconds works for all but the slowest feed rates Key ENTER to modify 30 seconds Sidebar Feed Verify uses a feed meter on the pump to ensure chemical is pumped when the pump is turns ON Any water meter input O to Z can be used for a Verify Meter Once you ve set up the Verify Meter you ll need to tell it which Pump to verify and if you wish keep track of the chemical pumped which input to use for Inventory More than one Verify Meter can use the same Inventory input since more than one pump may use the same tank or tote Feed meters may be built into the pump installed on the pump feed tubing or on the pump suction tubing for fractional HP boiler feed pumps Aegis User 7 08 60 AEGIS User Manual 5 3 Feed Verification amp Inventory Feed Verify Output To configure or view a verify meter key Drain Meter Q UP or DOWN to the target meter 146 5 G and press ENTER gt and Key UP and ENTER Configure Configure pa Diagnostic ae Key UP and ENT
9. 50 60Hz 6 3 Amps 120VAC 3 15 Amps 230VAC 0 to 1 AWG18 NEMA grounded plug SUTW jacket black 60 0 to 5 AWG18 3 wire 12 long NEMA receptacle sockets black Relays 2 5 NO contacts snubbed 0 1uF 150R Varistor on control AC input AWG 14 150mm UL rated 300V 10A Rising clamp type AWG 22 0 25 0 50mm 15 22 VDC unregulated Thermally fused 100mA hold trip 200mA 107 12 3 Specifications Notes Scan rate 100mS nominal User adjustable contrast Includes display support for USB connection state Password UserID protected Auto configures views linking sensors and controls Alarms accessed via Trackster3 polling Notes Switch selectable 5x20mm AC fusing Relays alarm amp OFF on fusing Quantity varies with controller part number Quantity varies with controller part number Controller transformer isolated from AC line Control fusing not user accessible Electrical grounds at bottom of aluminum backplate Conductor insulation rated 600VAC minimum MAX AWG14 150 150mm Available at 3 field wiring terminals DC Power Output
10. Key RIGHT to adjust the Start time amp RIGHT to adjust the ON time in minutes Day Start min 1 10 30 10 4 Press ENTER to set the BioFeed Event or EXIT to leave unchanged then Event frequency After you set an event you select a frequency Once Ba based on the pump s Event Cycle This example uses the default 28 day Event cycle Event frequency gt Key UP or DOWN to select Once Weekly 4 events in 28 weekly t days or Alternate Week 2 events in 28 days Event frequency Alternate week gt In this example we keyed ENTER Alternate Week and now Add an Event displays 2 Events Add an Event Yes 2 Events Sidebar Event Day can be set from 1 to 28 for Pumps set on a 28 day Event Cycle and from 1 to 7 for controllers set on a 7 day Event Cycle or always 1 on a 1 day Event Cycle Events repeat every 1 7 or 28 days Relays 1 to 5 feed time in minutes Frequency controlled outputs 6 to 9 feed volume in mL Aegis User 7 08 33 AEGIS User Manual 3 1 Setting amp Viewing Events Edit BioVolume To edit an existing BioFeed Event Relays 1 to 5 or a BioVolume Feed Frequency controls 6 to 9 Oxidant v s for a pump or solenoid key OFF No Event UP or DOWN to the target Pump gt lt ana BioVolume Feed lt Key ENTER amp DOWN to BioVolume Feed amp key ENTER Configure d Key DOWN to Edit an Event amp
11. ON OFF Acid pumps use setpoints 0 05 pH apart so that the delay between feeding acid and measuring it s pH does not cause wide pH swings Aegis User 7 08 AEGIS User Manual The Inhibitor pump powered ON OFF by relay 1 is ON and Owes 2 6 minutes of feed time This inhibitor is fed based on the volume measured by the tower make up meter Key ENTER once to Setpoints and again to view the volume setpoint Press ENTER to adjust Press DOWN to view the ON time setpoint Every 100 Gallons of make up the pump runs for 12 seconds Press ENTER to adjust Key RIGHT to move the underline and then UP or DOWN to change the number Press ENTER to change the setpoint or EXIT to leave unchanged In this example we ve increased the feed rate by 25 by extending the ON time from 12 to 15 seconds Cooling towers without make up meters use Bleed then Feed control for Inhibitor feed Example After the tower has bled for 8 4 minutes the Inhibitor pump turns ON for 8 4 minutes Key ENTER twice to view the present Bleed then Feed setpoint In this example it s 50 If the bleed in ON for 8 4 minutes inhibitor feeds for 4 2 minutes Press ENTER to adjust Key RIGHT to move the underline and then UP or DOWN to change the number Press ENTER to change the setpoint or EXIT to leave unchanged In this example we ve increased the feed rate by 24 by extending the ON time from 50 to 62 seconds Aegis User 7 08 12 1 3 V
12. key ENTER a l Edit an Event Key UP or DOWN to view active events vas amp then ENTER the event you wish to edit O Day Start mL 24 06 30 200 gt Press ENTER to set the edited Event then or EXIT to leave unchanged Day Start min 24 06 30 2504 then Key UP or DOWN to change the Day Key RIGHT to adjust the Start time amp RIGHT to adjust the feed volume in mL S In this example we re increasing the volume fed on Day 24 Wednesday of week 4 6 30 AM from 200 to 250mL Sidebar Events with zero minutes ON time or zero volume are deleted Each Relay 1 to 5 and Frequency control 6 to 9 may have up to 28 Events Each Relay and Frequency control may have its own Event Cycle of 1 7 or 28 days Selecting BioVolume Feed amp Delete Events removes ALL events Selecting BioFeed Event amp Delete Events removes ALL events BioVolume If you key DOWN on feed mL the volume fed goes to 500mL after zero as an easy way to get to a larger volume than the default 120mL Maximum volume per event is 25000mL 25L BioFeed If you key DOWN on ON min the volume fed goes to 120 minutes after zero as an easy way to get to a longer feed time than the default 15 minutes Maximum feed per event is 1440 minutes 24 hours PotFeeders Oxidizing biocides for smaller towers frequently use bleach tablets or pucks in pot feeders A solenoid connected to Relay 1 to 5 is
13. 120 0 min Editing or Exit 090 0 min gt H F then gt Lock out time PT 90 0 min 4 r Lock out time starts when Prebleed time ends and the feed event starts If you require 90 minutes of residence time for a biocide to be effective then Lock out time Feed time 90 minutes Biocide Pumps powered by Relay 1 to 5 should be set to MAX stroke amp frequency to slug feed Bioicide Feed on frequency controls 6 to 9 will feed at MAX frequency In either case the feed objective is to get to the target kill concentration quickly Prebleed time amp Prebleed value are viewed and adjusted in the same way as Lock out time Aegis User 7 08 36 AEGIS User Manual 3 2 Prebleed Lockout Prebleed Output Biocide 4 OFF No Event lt ana Configure lt H Alarms Limits lt and Kev UP to Special Control amp kev ENTER Special Controle ey o Special Contro ey 7 Key ENTER Prebleed Lock Prebleed Lock amp UP or DOWN to Bleed Output To view or modify the Prebleed Output for a biocide feed pump key UP or DOWN to the target Pump Key ENTER amp DOWN to Configure amp key ENTER r Bleed Output Bleed Output is currently set to Tower1 Bleed Towerl Bleed lt Press ENTER to modify Key UP or DOWN to change the Bleed Output Bleed Output Tower2 Bleed e Press ENTER to set the Ble
14. 20mA output and a caustic pump on another 4 20mA output Calculating Loop Current 4 20mA Output current mA 4 16 x Sensor Value 20mA Setpoint 4mA Setpoint Use the absolute value of the setpoint difference for 20mA Setpoint lt 4mA Setpoint For this page s example 15 42mA 4 16 1785 2500 0 Aegis User 7 08 91 AEGIS User Manual 10 2 4 20mA Configuration Select Sensor 4 20mAOutput_D lt D 4 00mA 0 0 lt 1 and Configure Setpoints To view or modify the sensor controlling the 4 20mA output current key UP or DOWN to the target 4 20mA output and press ENTER N Key UP and ENTER Configure We re presently in Manual mode Return to Auto lt Key ENTER to Return to Auto Yes and then UP to Control by ane Key ENTER to modify Control by Control by lt H No Control A Key UP or DOWN to scroll through all enabled sensors and or Key ENTER to select or EXIT to leave unchanged Control by In this example we selected Conductivity Conductivity to control the 4 20mA loop current l Sidebar Control by Any enabled sensor of any type A to N may be used to control the 4 20mA loop current Once you ve selected a controlling sensor adjust the 4mA Setpoint and 20mA Setpoint to reflect the range for either control of a pump or valve or for a remote DCS monitoring input Example You are controlling the 4 20m
15. Address at 10 10 6 106 Connect a crossover cable from your notebook PC to the controller and browse 10 10 6 106 Browser passwords are the same as the default keypad passwords listed in manual Section 11 1 Passwords You ll need to configure your notebook to connect Refer to Appendix C LB LAN Browser Option at the back of this manual Aegis User 7 08 102 AEGIS User Manual 11 7 Communications This display sequence is only applicable to Modify IP Address controllers with the LB LAN Browser option Thu 16 54 10 To view or adjust the Ethernet IP Address S N A076X486 press ENTER and DOWN to Communicate l at the power up or day time display then Communicate lt Key ENTER Communicate Configure M a Ip Address lt 10 10 6 106 lt Key UP or DOWN to change the underlined number Key RIGHT to move to the next 3 digit number IP Address gt lt 192 168 024 106 Key ENTER to change or EXIT to leave J the IP Address unchanged then r In this example we ve changed the IP Address from IP Address n Key ENTER to modify 10 10 6 106 to 192 168 24 86 192 168 24 86 Sidebar Warning Do not connect the controller Ethernet connection into a site LAN until the site IT staff have assigned a valid IP Address Using An Ethernet CrossOver Cable You ll need to set your notebook PC s IP Address to the same network to browse the contr
16. Compensation To view of modify sensor Compensation Conductivity A key UP or DOWN to the target sensor 1134 us and press ENTER Configure lt Diagnostic t lt and 4 Compensation v None A Key DOWN and ENTER Configure r Key DOWN to view Compensation Displays current Compensation type None in this example Press ENTER to modify Compensation None fe Press UP or DOWN amp ENTER to select Key EXIT to not modify re ae Compensation Thermal Comp lt In this example we selected Thermal Compensation i l The controller then displayed None as the temperature sensor amp we scrolled to and keyed ENTER Temperature B Thermal Sensor Temperature B Key DOWN to view or modify the degree value This value is typical for cooling water amp is not modified unless you are immersed in brine or another Compensation non cooling water stream 0 970 F Sidebar Conductivity Temperature Compensation Cooling tower applications use conductivity as a measure of total dissolved solids TDS If we didn t temperature compensate then we d have an error of roughly 1 F in the TDS A typical cooling tower 15 degree F temperature rise would cause about a 15 error in TDS because water is more conductive as temperature increases even though the TDS hasn t significantly changed We temperature compensate conductivity so it t
17. If out of range Sensor Fault displays Fault Cause varies with sensor type Conductivity Fouling lowers the measured value Remove and inspect Whitish deposits indicate overcycling amp may require HCI cleaning to remove If no visible fouling clean with alcohol or solvent then Factory Reset Refer to Section 7 for boiler sensors ORP Verify sensor cable not shortened amp firmly connected Verify not visibly fouled If stream contains organics clean with alcohol or solvent If stream high in iron or copper restore the sensor s platinum surface with Aqua Regia or equal pH Verify solution ground connected amp excess sensor cable coiled at sensor not in enclosure Verify sensor cable not shortened amp firmly connected Then replace if no recovery after Factory Reset pH sensor life decreases with handling and temperature extremes Temperature Verify color coding correct and sensor wires firmly connected Inspect sensor for damage or leaking Aegis _User 7 08 42 AEGIS User Manual 4 3 Sensor Alarms Alarms To view or adjust sensor alarm key UP or DOWN Conductivity A to the target sensor and press ENTER 1134 us di Key UP and ENTER Alarms Alarms Configure In this example the controller will alarm if the High Alarm e conductivity exceeds 2500 uS 2 ad us 4 Key ENTER to modify J In this example the controller will alarm if the Low Alarm lt conductivity falls below 600 u
18. Key UP and ENTER Diagnostic Sensor Type displays Corrosion Current State may also display Alarmed if above the High Alarm or below the Low Alarm for longer than the Delay on Alarm period Current value of the Corrosion Rate in mils year where 1mil 0 001 Compensation displays Corrosion Anodic Level is the first of the multiple step measurement sequence that repeats every 2 minutes Anodic Level is usually and increases with increasing corrosion rate Cathodic Level is the 2nd step Cathodic Level is usually and increases with increasing corrosion rate Sidebar Corrosion Rate has a unique set of diagnostics Anodic and Cathodic levels should be opposite is sign and nominally the same magnitude If not the sensor tips may be fouled debris blocked or pitting Aegis User 7 08 55 Diagnostic PN Mm h r f f 4 6 Sensor Diagnostics Corrosion Rate Corrosion Rate lt E 2 32 mpy and 4 Calibrate Sensor Type Corrosion Operational Current State Displayed Value 2 32 mpy Compensation Corrosion Anodic Level 229 2 mV N 214 6 mV Cathodic Level continued AEGIS User Manual 4 6 Sensor Diagnostics Corrosion Rate Pitting Level is typically much less Pitting Level than the Anodic or Cathodic level 12 8 mV Skips Gains amp Offsets Measured Level will c
19. OFF To view or modify a Mirror contact set key UP or DOWN to the target contact set and press ENTER Key DOWN and ENTER Configure Key UP and ENTER Mirror output then UP or DOWN to the Pump Valve or Solenoid that in this example you wish Permit Feed X to Mirror In this example we key ENTER selecting the Brominator output Now let s demonstrate a Mirror by keying EXIT and UP or DOWN to Brominator In this example Relay 4 is powering the Brominator Key ENTER and DOWN Brominator to Test Prime Key ENTER twice to Test Prime for 5 0 minutes Key EXIT and UP or DOWN to Permit Feed X X is mirroring amp ON when Brominator is ON Sidebar 8 4 Mirroring Outputs x Permit Feed OFF lt and Configure lt H Diagnostic t and a Mirror output Brominator Permit Feed _ ON L5sec none lt ana or Mirror output Brominator te Mirror output lt lt Brominator and lt 4 OFF No Control ant ty Test Prime aii BioFeed Event Prime Output lt 5 0 min Verify mirroring XxX Mirroring Inverting amp Contact Set Controls support varied and complex applications Many sites won t use these extra contact set functions however for those sites which need these controls they are built into each controller Aegis User 7 08 82 AEGIS User Manual A contact set ON can be switched to OFF using Invert Sense To view or modify a contact se
20. Then Feed lt 35 ppm Inhibitors typically have a recommended ppm concentration for a target hardness or corrosion rate In this page s example we re feeding at 25ppm which is 0 0019 Gallons or 7mL for every 75 Gallons of make up The Measure Volume does not have to be the Gallons Contact of the make up meter The controller does the math The controller knows the mL stroke rating for the No 7 pump amp it knows how many times the pump has stroked so the controller knows the volume fed Aegis User 7 08 13 AEGIS User Manual 1 3 View amp Adjust Setpoints Key UP or DOWN to the target Pump Valve or Solenoid Adjust Setpoints then press ENTER Sensor Feed Acid Pump 6 The Acid Pump frequency controlled by output 6 is ON and feeding at 65 84 of maximum SPM strokes minute f Feed 65 84 Setpoints lt Key ENTER once to Setpoints and again to view the Test Prime 100 ON Setpoint At pH s greater than 7 50 the 6 Acid Pump is maximum rated SPM This chemical is fed based on the value of a pH sensor 100 ON Setpoint P Press ENTER to adjust 7 50 pH Press DOWN to view the OFF Setpoint setpoint At pH s less than 7 25 the 6 Acid Pump is OFF par OFF Setpoint Press ENTER to adjust 7 25 pH 4 Key RIGHT to move the underline and then J UP or DOWN to change the number Press ENTER to change the setpoint Editing or Exit or EXIT to
21. User Manual 2 4 Sensor Controlled ON OFF Feeds To view or modify the Control Type key UP or DOWN to the target Pump or solenoid amp press ENTER In this example the Oxidant pump is powered by relay 3 and has no controlling sensor set Key ENTER amp DOWN to Configure Key ENTER UP to Control Type Relay 3 is now controlled by a Falling setpoint correct for an ORP controlled Oxidant feed Press ENTER to modify the displayed Control Type Then UP or DOWN for options or EXIT to leave unchanged Falling ON when below Turn ON setpoint amp OFF when above TurnOFF setpoint Oxidant amp Caustic feeds Rising ON when above Turn ON setpoint and OFF when below TurnOFF Acid AntiChlor Feed amp Blowdown Bleed controls Event Between ON during a timed Event amp between TurnON amp TurnOFF setpoints otherwise OFF Scheduled sequenced amp level controls Event Falling Active only during a timed Event Scheduled Oxidant high ppm chlorine feeds Slug til it ORPs applications Event Rising Active only during a timed Event Scheduled bleed controls lower the conductivity once a day in the air washer sump Between ON between Turn ON amp TurnOFF setpoints otherwise OFF Tank Level chemical test drop count and Temperature controls Sidebar Control type not applicable or displayed for water meter based feeds Control Type for frequency controlled pumps 6 to 9 are Always amp During Events
22. any controller meter input Meter Operation Installation Cabling Operating Issues Notes Type Meter contact set closes every 100 The meter of choice for and 1 Contact or 25 or 10 Gallons make up lines Head Meters are fixed Volume Contact or configured with moveable magnets Typically not cost effective on larger piping although common on piping up to 6 Usually must be horizontal diameter Most are cabled 2 wire Electronic switch versions are 3 wire 2 wire meters are not polarity sensitive Insertion type meter provides pulses Warning Miswiring may fail the Hall effect Turbine per gallon which decrease with sensor within several hours Do not Paddlewheel increasing piping size connect meter prior to commissioning K Factor Pulses Gallon Upstream and downstream minimum Not sensitive to installation straight piping and full line required orientation Cabled 3 wire High temperature versions used for Insertion meters which output a sine wave boiler feedwater require a signal conditioner at the meter Connect to fixed controller input G Typically these are turbine paddlewheel Rate or to optional 4 20mA input cards meters with a pulse to rate signal 4 20mA Cabled 2 wire conditioner built into or located at the meter insertion site Controller may convert rate to May have a local power supply or are volume for control or feed on rate powered by controller 15VDC supply Feed me
23. calibration Process control and monitoring only sites which may operate over a wide sensor range benefit from 2 point calibration For these users the controller supports direct set of sensor OFFSET amp GAIN Calibration Faults Refer to the next page for options on fault Inventory and Manual Input sensors Use Calibrate when you fill a tank to correct the Inventory level Use Calibrate after you measure a drop count to update a Manual Input Aegis _User 7 08 41 AEGIS User Manual 4 2 Sensor Calibration Calibrate Faults Sensor Fault Ignore warning Conductivity If the controller cannot calibrate you ll view this warning after you modify the sensor value amp key ENTER Key ENTER to ignore the warning or EXIT to return the sensor to its pre calibration value 1264 uS To reset the sensor to its factory default setting Calibrate lt key ENTER and DOWN to Factory Reset Alarms 4 lt and Press ENTER Factory Reset doesn t correct the Factory Reset lt 4 problem which caused the warning Yes lt H In this example we started at 1134 uS got a warning when 7 SS PY we calibrated at 1264 uS and returned to 846 uS Conductivity after Factory Reset Looks like this sensor is fouled 846 us Sidebar Sensor Fault The controller verifies that sensor OFFSET or GAIN required to make the sensor read its new value are within the range of typical sensor operation
24. change the underlined digits Key RIGHT to move the underline Press ENTER to save the new Time amp Date or EXIT to leave unchanged Sidebar Time amp Date The controller uses a 24 hour clock where 14 30 is 2 30 PM When you set the Date the controller automatically sets the correct day of the week Controller Response to a new Time amp Date When you change the time amp date the controller 11 2 Time amp Date Time amp Date Thu 16 54 10 S N AO76X0486 then Time amp Date lt Enable I O y eo HH MM 20 08 07 14 20 gt 4 4 4 then gt i E 16 54 10 ll S N A041x0486 1 Turns all outputs OFF resets all control timing and restarts the logging period on each I O 2 Ends prebleeds lock outs and zeroes time and volume owed which ends all BioFeed events 3 Does a midnight reset which will may set volume meter Low Alarms and will reset any output alarms set to reset midnight 4 Sets the biocide Day 1 to the most recent Sunday Example If you are at Day 19 Thursday of week 3 on a 28 day biocide cycle After a Time amp Date change you are now at Day 5 Thursday of week 1 Aegis User 7 08 96 AEGIS User Manual To view the Activity Log press ENTER and DOWN to Activity Log at the Alarms display Key ENTER Activity Log Each entry in the log initially displays it s activity as you key DOWN In this example the feed limit Alarms for Bl
25. inputs amp outputs to the controller Sensor inputs H to N and meter contact set inputs W to Z don t physically exist in the controller and are used to calculate ppm amp inventory log manual entries sum water meters amp many other advanced controller functions Aegis _User 7 08 5 AEGIS User Manual Navigation 2of3 Controllers with the LB LAN Browser option include a built in command amp control web server with BROWSER real time views of your controller operation You can browse with Mozilla s Firefox or Internet Explorer 7 over a 10BaseT Ethernet connection or the internal modem if installed If the LB option is included in your controller the Browser appendix C has been added to this manual 06 11 07 S N ADDOXDO05 i OFF Tue 09 42 12 Cooling Dispersant Site Name Tower Siate Logged in ON 14 3min ON System Name Current User admin Oxidant Pump U Engel Eves A 10500 G P i namen Ak Taer Make K REFRESH New View C Diagnostic Alarms Events 7 and Timers Reset All Owes 15 8min ON es a Alarms none tf 2700 G WaterMeter P y ON 3 7min uf Tower Bleed T14F ye Water Temp Exchanger Sidebars Are used to explain typical uses for feed and control functions Sidebars are at the bottom of the page detailing the function RESET SUBMIT New users amp users new to water treatment will find these explanati
26. lt and Event Cycle 28 Days lt t Event Cycle 28 Days 4 lt Event cycle 24 Hours a t Event Cycle 7 Days N te Event cycle 7 Days Sidebar If you are feeding two organic biocides alternating every week you should use the default 28 Day Event Cycle If you are feeding bleach or another oxidant you are likely dosing 2 to 3 times week amp never on Saturday or Sunday You should use the 7 Day Event Cycle If you are using the Biofeed timer for a process type task like automating sensor cleaning or backwashing a filter the 24 Hour Event Cycle may fit your application Each Pump or Solenoid may have its own Event Cycle Aegis User 7 08 38 AEGIS User Manual To view the Diagnostics for a biocide feed pump key UP or DOWN to the target Pump Key ENTER amp UP to Diagnostic amp key ENTER Key UP or DOWN to view Current State displays alarmed if feed limited Biocide feeds are often controlled by Events and not by sensors or water meters In this example 8 Events occur in a 4 week cycle Typical for a biocide fed twice a week Its now Day 12 Thursday of Week 2 In this example we ve been ON today for the same time shown on the main menu display 43 2 minutes These times wouldn t match for products fed more than once a day In this example we re owed 16 8 minutes of pump ON time indicating that this feed event will be 60 minutes tot
27. move the underline and then UP or DOWN to change the number Press ENTER to change the prime time or EXIT to leave unchanged In this example we re priming the Oxidant pump for 15 minutes Oxidant now displays ON and counts down the owed time or volume Test Prime Oxidant 5 OFF No Event o Wl Test Prime BioFeed Event Prime Output 5 0 min Editing eor Exit 15 min gt 4 F then gt Oxidant lt 5 ON Owes 14 9 min Sidebar Priming may also be used to slug feed on system start up in addition to testing pumps valves or solenoids Ending Prime Test Clear Alarms Section 1 2 ends all owed time amp volume for all pumps and solenoids Individual pumps may be reset by clearing the alarm Refer to 2 7 Limiting Feed amp Alarms Fail to Prime A pump or solenoid that is Interlocked Blocked or OFF on alarm will not Prime The time or volume owed will be fed when the reason for no feed is removed The main menu display for the target pump or solenoid will display the reason for fail to prime And the Diagnostic sub menu will provide detail If the green LED on the lower controller circuit board is ON the pump or valve connected to that output 1 to 9 should also be ON Aegis User 7 08 15 AEGIS User Manual 2 Chemical Feed Controls Inhibitor Acid Bleach Amine 2 1 Chemical Feed 101 Feed Methods Water treatment uses 5 methods to feed ch
28. of concentration conductivity may also be used for cycle controls control Condensate Cycles of concentration are also controlled Monitoring and bypass valve control on the ratio of make up to bleed volume Closed Loops Automated inhibitor using water meters with conductivity as feed monitoring only ORP Oxidants Bleach Biocide control Sensitive to fouling by high levels of iron and oils amp greases Anti Chlor Bisulfite amp other free Install vertically tip down chlorine supression fed upstream of Conversion from ORP mV to ppm varies ROs or prior to wastewater release from site to site No response very high oxidant levels pH Acid Increases tower cycles of Install vertically tip down concentration Process applications Requires a solution ground Caustic Increases pH in both Tower Reliability increases if calibrated in line and Boiler applications Corrosion Typically monitoring only for metals Alarms on increase in corrosion rate amp Rate which suffer general corrosion measures in MPY mils per year Steel copper Cupro nickel Not useable for metals which pit like Admiralty and Zinc Galvanizing Aluminum and Stainless steels Temperature Sulfite Temperature of Deaerator or Sensors connect directly to the controller boiler feedwater and sensor driver cards Temperature compensates Some sensor types are converted conductivity and pH and is used to to 4 20mA inputs prior to measuring alarm on loss of cool
29. this tower runs 24 hours a day is this the expected volume for the target cycles of concentration and thermal load If it s high are we losing water If it s low is the meter volume contact correct amp if it is is the conductivity control accurate amp bleed functioning or are the cycles of concentration assumptions used for treatment concentration incorrect Diagnostics are only useful if you draw operating conclusions from the data Aegis User 7 08 64 AEGIS User Manual 5 6 Meter Diagnostics Diagnostic cont Vol Last year is the measured volume in Vol Last year the previous calendar year 2694250 Days Online is the number of days Days Online that this meter has been enabled 286 and operating in this controller Volume Contact or K Factor is the current volume contact scaling factor for the installed meter 100 gal Sidebar If Days Online 286 and Vol this year 1642900 amp the tower or boiler operates 24 7 then we re averaging 5750 Gallons day Is this the expected volume for the target cycles of concentration and thermal load If we ve been averaging 5750 and today at noon we ve measured Volume today 9860 Gallons why the increase Meter Alarms Low Alarm The Low Alarm for water meters only trips at midnight if the meter has not exceeded the Low Alarm volume Set Low Alarms 0 to prevent alarms midnight Use Low Alarm to flag towers or boilers that have not
30. turned ON directing flow through the feeder Verify that both isolation valves are open after filling the feeder Aegis User 7 08 34 AEGIS User Manual To view or set Prebleed Lockout for a biocide feed pump or solenoid key UP or DOWN to the target Pump Key ENTER amp DOWN to Configure amp key ENTER Key UP to Special Control amp key ENTER Key DOWN amp then ENTER to select Prebleed Lock Key ENTER amp DOWN Prebleed Lock to view the current settings Bleed Output is the name of the Tower Bleed solenoid Press ENTER to modify for controllers with more than one bleed control Lock out time is the time that the Bleed Output is OFF during and after each biofeed Press ENTER to modify Set to zero for no Lock out Prebleed time is the time that the Bleed Output is ON before each biofeed starts Press ENTER to modify Set to zero for no Prebleed Prebleed Sensor controls the Bleed Output Press ENTER to modify Set to None for no Sensor If you select a Prebleed Sensor Prebleed Value is used to shorten the Prebleed time preventing over bleeding loss of water amp treatment chemicals Press ENTER to modify Sidebar 3 2 Prebleed Lockout pa Prebleed Lock __ Biocide 4 OFF No Event on Configure Alarms Limits t Special Controle _Prebleed Lock Bleed Output lt Tower Bleed Lock out time 120 0 min Prebleed time l 2 30 0 min Prebleed sensore Non
31. with the ChemicalB connected to Frequency 7 ChemicalA Blocked by 7 2 Some inhibitors are degraded by high levels of oxidant The Inhibitor pump is connected to Relay 1 amp the Oxidant pump connected to relay 3 Inhibitor Blocked by 3 3 Three chemical pumps connected to Frequencies 6 7 amp 8 share a common feed line Only one can be fed at a time Frequency6 Blocked by none Frequency7 Blocked by 6 8 and Frequency8 Blocked by 6 7 6 can always feed 7 feeds if 6 amp 8 are OFF 8 feeds if 6 amp 7 are OFF Caution Be careful Blocking with frequency outputs 6 to 9 that are controlled by a sensor to ensure that they occasionally turn OFF to allow the blocked pump to feed Aegis User 7 08 30 AEGIS User Manual To view or modify the Diagnostic for a pump or solenoid key UP or DOWN to the target Pump The main menu display provides the current state Press ENTER Key ENTER amp UP to Diagnostic amp key ENTER amp UP or DOWN Displays Alarmed if feed stopped on Actuation or Day limits Displays the controlling sensor meter or contact set This example shows a pump controlled by meter P and today s volume measured by P Displays the first setpoint type amp value This example is meter controlled so the first setpoint is the volume measured by water meter P Displays t
32. 20mA output card To view or modify a current output Manual setpoint key UP or DOWN to the target output and press ENTER Key ENTER Setpoints Manual User sets current Auto Sensor controls current Displays the present 0 to 100 output setpoint Key ENTER to modify Key UP or DOWN to change the underlined digit Key RIGHT to move the underline Press ENTER to save the new Manual Mode setpoint or EXIT to leave unchanged Key EXIT twice to view the effect of the new setpoint In the example we ve increased the loop current from 4 00mA to 8 32mA 10 0 4 20mA Outputs 10 1 4 20mA Output Setpoints E Manual Setpoint n 4 20mAOutput_D D 4 00mA 0 0 Setpoints lt Configure Manual Mode 0 a Editing or Exit 27 gt then Manual mode lt 4 27 4 20mAoOutput_D lt D 8 32mA 27 0 Sidebar Manual Mode Use Manual mode to verify the 100 ON 20mA OFF 4mA or modulate operation of the proportional pump or valve that the 4 20mA output is controlling Use Manual mode to verify the monitoring input that is using the current loop value to represent a controller conductivity pH ORP or corrosion rate sensor or ppm calculation Load Powered 4 20mA Loop 4 20mA current outputs are powered by the loop load or by the controller 15VDC power supply Building automation system typically supply 24VDC to power current loops Current loop controlled pumps and valves usually use the controller 15
33. A output current using a pH sensor If the 4 20mA current is controlling a pump feeding acid you could set 4mA 7 0pH and 20mA 8 0pH The pump would be OFF at 7 0pH and at 100 at 8 0pH If the 4 20mA current is monitored by a building automation system or distributed control system you could set 4mA 6 0pH and 20mA 10 0pH since this span represents the likely range of measured pH Laaa Aegis _User 7 08 92 AEGIS User Manual 10 2 4 20mA Configuration Calibrate Interlock To calibrate view or modify Bibit a 4 20mA output 4 20mAOutput_D lt D_ key UP or DOWN to the target output 4 00mA 0 0 and press ENTER then UP and Key ENTER Configure Configure lt Setpoints The 4 20mA current output is in Manual mode l The current mA level is fixed at the user set level Return to Auto Yes Selecting Auto controls the current based on the value k of a sensor and the 4mA and 20mA setpoints Trim Zero adjusts the 4mA level Trim Zero Put a mA meter is series with the loop current and 9 lt key ENTER and UP or DOWN to adjust Trim Span adjusts the 20mA level Put a mA meter is series with the loop current and Trim Span key ENTER and UP or DOWN to adjust 950 aa 4 20mA outputs may be Interlocked like pumps and valves Interlocked When the interlock is ON the current is 4 00mA 0 key ENTER and UP or DOWN to select an interlock _ eee Sidebar Calibrate Trim Zero
34. AQUATRAG SYSTEM DESIGN amp ENGINEERING AEGIS Water Treatment Controller Installation amp Operating Manual AEGIS User Manual CONTENTS Safety Navigation A HELP Your controller sensor set it s wiring and configuration Typical installation for your controller type B START UP Modifying your controller for this site Day to Day Operation Main Menu Sensors Pumps Solenoids amp Valves Checking amp Clearing Alarms View amp Adjust Setpoints 1 1 1 1 1 Priming Testing Pumps amp Solenoids AUN 2 Chemical Feed Controls Inhibitor Acid Bleach Amine 2 1 Chemical Feed 101 2 2 Water Meter Feed 2 3 Bleed Based Feed 2 4 Sensor Controlled ON OFF Feed 25 Proportional Feed 2 6 Base Feed 2 7 Limiting Feed amp Alarms 2 8 No Feed on No Flow 2 9 Blocking a Feed 2 10 Feed Diagnostics 3 Biocides Feeding by Time amp Date 3 1 Setting amp Viewing Events 3 2 Prebleed Lockout 3 3 Event Cycle 3 4 Event Diagnostics 4 Sensors Conductivity pH ORP Corrosion 4 20mA 4 1 Sensors 101 4 2 Sensor Calibration 4 3 Sensor Alarms 4 4 Sensor Configure 4 5 Sensor Compensation 4 6 Sensor Diagnostics 5 Measuring Volume WaterMeters Inventory Verify Feed 5 1 Meters 101 5 2 Configuring a New Meter 5 3 Feed Verification amp Inventory 5 4 Cycle Controls 5 5 Copying Meters 5 6 Meter Diagnostics Aegis User 7 08 2 AEGIS User Manual 6 Cooling Tower Bleed 6 1 Mak
35. Aegis User 7 08 21 Control Type Oxidant 3 OFF Setpoints lt ana Configure lt H Alarms Limits lt ana Control Type Falling Set Control Type Falling set e Control Type Rising Set f Control Type Event Between e Control Type Event Falling e Control Type Event Rising lt Control Type Between Sets e AEGIS User Manual 2 4 Sensor Controlled ON OFF Feeds Special Control To view or modify the Special Control used on a pump or solenoid key UP or DOWN to the target Pump Timed Cycling amp press ENTER Chemical 123 4 ON 104 sec In this example the Chemical 123 pump is powered by relay 4 and has been ON this feed cycle for 104 seconds and Pee lt Key ENTER amp DOWN to Configure Alarms Limits o and Special Controle Then UP amp ENTER at Special Control None and Key DOWN amp ENTER to select Timed Cycling Special Control amp ENTER once selected to view amp adjust Timed Cycling 4 lt the cycling control timing Key ENTER to modify the default 2 minute ON Time ON Time lt Setpoint control turns ON amp OFF Relay 4 2 0 min t during the ON Time Key ENTER to modify the default 15 minute Period l Relay 4 is always OFF during 13 minutes Period in each 15 minute Period 15 0 min Sidebar Often there is a long time delay between adding a chemical and measuring it s effect at a sensor which ca
36. After you ve modified the controller for your site and its water treatment program Save config by keying ENTER amp selecting Yes Once saved you can always recover by using Load config The A amp B controller inputs may be configured for several sensor types Usually this is done once site Key ENTER to view or modify the current A amp B Sensor type Load config Time amp Date Save config 11 6 Configurations Thu 16 54 10 S N A076X0486 then Configure 4 4 ana 4 Load Factory COT20X WW amp a No WJ amp No WA o amp A amp B Sensor Pan Conductivity ot Sidebar Warning Load Factory amp Load config controller re configuration may change sensors Meters amp contact sets pump and solenoid controls biofeed events Reconfiguration and run occurs as soon as either option selected Load Factory LB Option Up to 15 configurations may be included with the controller The configurations shipped with the controller may make it easy to add a 2 boiler blowdown a make up conductivity or an ORP controlled bleach feed They may also include complete preset feed programs complete with setpoints pump type selection and biofeed timing Recommended Turn on Keypad password Manual Section 11 4 Log on as the admin and modify the password if this controller is Is likely to be accessed by uniformed users Do this to prevent accidental or malicious con
37. Delay on Alarm amp press ENTER Key UP or DOWN to change the underlined digit Key RIGHT to move the digit underline Press ENTER to modify or EXIT to leave unchanged In this example we ve increased the High Alarm from 2500 uS to 3000 uS Sidebar N pe 4 3 Sensor Alarms Adjust Alarms Conductivi ty PYN 1134 us and Alarms lt Configure High Alarm Ki 2500 us Editing or Exit 3000 us gt then High Alarm lt H 3000 us Reset Alarms Section 1 2 Clear Alarms resets the Delay on Alarm time If the Delay on Alarm is set to zero minutes and the sensor is above the High Alarm or below the Low Alarm the sensor alarm will immediately re trip Alarms when Tower OFF Line If the sensor installation piping drains or siphons when the tower turns OFF and a sensor alarm results install a check valve on the sensor line A check valve will prevent alarms but more importantly will prevent wet dry cycles from depositing on sensing surfaces causing calibration problems and shortening sensor life Aegis User 7 08 44 AEGIS User Manual 4 4 Sensor Configure Configure To view or modify sensor configuration key UP or DOWN Tower pH cC to the target sensor and press ENTER 7 46 pH aa Key DOWN and ENTER Configure Configure Key UP or DOWN to view current configuration Diagnostic Sensor Description may be up to 14 characters amp numbers Descripti
38. ER Feed Verify Feed Verify l Yes Key ENTER ENTER to display the current Verify Output Verify Output Key ENTER and DOWN to select a new Verify Output oxidantPump_8 OR EXIT for no change In this example the Verify Output is a drain solenoid verify Output Key ENTER to select Tank Drain_5 Every time Tank Drain_5 operates Drain Meter Q must measure flow within 30 seconds or the controller will alarm l F l Adjust the Wait to Verify time if 30 seconds is verity Output not a long enough to wait for Q volume Tank Drain_5 Sidebar Feed Verify can be used to check any control or feed with a downstream water meter In this example we have a product mix tank or a neutralization sump with a drain solenoid Tank Drain_5 controlled by Relay 5 Drain Meter Q is used to verify that the drain solenoid operated the drain isn t blocked the drain line isn t obstructed downstream of the meter Relays 1 to 5 and frequency controlled Pumps 6 to 9 can be alarmed on fail to feed with the Feed Verify Compensation Many pumps can be purchased with a low cost option that provides a contact closure whenever the pump feeds typically every stroke These contact sets can Feed Verify that the pump has not lost prime become unplugged or run out of chemical in applications where the accuracy of a higher cost 1mL pulse meter is not required Aegis User 7 08 61 AEGIS User Manua
39. Fail Calibrate Current State 4 20mA Open 4 20mA Inputs only or Operational A Overrange Hardware fault L B J Current value of the sensor Di splayed Value With user set digits after the decimal and user set units 1134 us Thermal Compensation is used with cooling tower and Compensation condensate conductivity sensors Thermal Comp 4 amp usually not with boiler conductivity sensors Gain Multiply is the value required to make the displayed Gain Multi ply conductivity match your last calibration 5 7146 Default Gain is the Gain after a Factory Reset An increasing Gain Multiply usually Default Gain Indicates a fouling sensor 5 6000 continued Sidebar Diagnostic displays how the sensor is configured compensated and calibrated This is where you go if you have a non obvious sensor problem Aegis _User 7 08 53 AEGIS User Manual 4 6 Sensor Diagnostics Diagnostic cont Offset Adjust is the value required to make the displayed Offset Adjust pH ORP temperature or corrosion rate 35 0000 match your last calibration Default Offset is the Offset after a Factory Reset pH amp ORP sensors with offsets twice the default offset will Defualt offset not usually track amp have failed contaminated or fouled 35 0000 Refer to Section 4 2 Calibrate Faults Measured Level measured by the controller Useful when converting 4 20mA currents to GPM amp diagnosing no
40. Flow Alarm from its factory default of 1500 minutes to 60 minutes 8 3 Contact Set Alarms Alarms Flowswitch S _ ON 52 6min and Alarms Configure ON Time Alarm 1500 0 min No Flow Alarm 1500 0 min Editing or Exit 0060 0 min gt then No Flow Alarm 60 0 min gt A Sidebar Default alarm times are set so that contact sets won t alarm unless user configured It s unlikely that you would set both alarms on any one contact set but the ability to alarm both ON amp OFF states gives you a lot of application flexibility ON Time Alarm If the pressure switch on your RO or sidestream filter shows high pressure for more than 30 minutes you d like to log an alarm If the flowswitch on a comfort cooling tower which typically in ON between 6 00AM amp 6 00PM Is ON for more than 13 hours either the flowswitch has faulted OR tower operation has changed No Flow Alarm If you had a treatment system that runs 24 7 you d want to alarm on a flowswitch That has no flow since it indicates that the sensor or injection line is blocked or inadvertently valved OFF If you expected a bottom blow thermal switch to trip daily when the bottom blow valve is manually opened you want an alarm if this bottom blowdown did not occur Aegis User 7 08 81 AEGIS User Manual Mirror A contact set can be ON or OFF if a Pump Valve or Solenoid is ON or
41. M More than one pump may be copied to Inventory_M and volumes measured by meters O to Z may also be copied to Inventory_M Copy Volume to Inventory_M Sidebar Copying Volumes Pumped volumes are summed to volume meter inputs O to Z and subtracted from sensor inventory inputs H to N Inventory Applications Summing to Sensor If more than one frequency controlled pump is feeding from the same tank both pumps can be set to Copy Volume to the same tank to display and alarm on a calculated tank volume A Feed Verify meter can also share the same calculated volume Proportional Feed Application Summing to Meter If you wish to feed 100mL of dispersant after every 1000mL of inhibitor copy the inhibitor pump volume to a water meter Then use the water meter to feed 100ml of dispersant every time it measures 1000mL The meter doesn t need to physically exist so you could enable and use one of the phantom inputs W to Z to avoid using one of the existing meter contact set inputs O to V Aegis User 7 08 87 AEGIS User Manual To modify a frequency controlled pump s mL stroke key UP or DOWN to the target pump and press ENTER Key UP to Pump Type and ENTER Key DOWN amp ENTER at mL stroke to modify Key UP or DOWN to change the underlined digit Key RIGHT to move the underline Press ENTER to save the new mL stroke or EXIT to leave unchanged I
42. Meter key UP or DOWN to the target Pump amp press ENTER Inhibitor lt 1 In this example the Inhibitor pump is powered by OFF No control relay 1 and has no controlling sensor or water meter i H ae Configure lt _Alarms Limits 4 Key ENTER amp DOWN to Configure Key ENTER ENTER to modify the controlling sensor meter Control by a Key UP or DOWN to change the sensor meter No Control Only enabled meters contact sets and Lo J sensors will display as you scroll Water amp Meters are typically inputs O through R Press ENTER to change the control Editing or Exit or EXIT to leave unchanged o gt 4 4 then gt Key RIGHT to add subtract or r sequence other water meters Control by O In this example we have set the Inhibitor pump control to the water connected to controller input O Sidebar Water meter and Feedwater Meter based controls feed proportional to load to maintain a target ppm of the fed chemical Inhibitors Boiler Treatment and Amines are usually fed to achieve a target ppm and therefore frequently meter controlled Meter based feeds are among the most reliable accurate and simplest ways to feed The cost of installing a water meter is offset by the resulting feed reliability Summing Meters Up to 4 meters may be summed to control a pump Use when towers have more than 1 make up Sequencing Meter
43. Meters may often be user configured for many Gallon Contact or Liter Contact settings Make sure you get the volume contact correct or feed concentration errors will occur Turbine Paddlewheel Meters Nominal K Factors or Pulses per Gallon are listed for each pipe size on the manufacturers web site or on the installation manual supplied with the meter When meter are supplied with entry fittings the actual K factor is frequently labeled on the body of the meter Common Meter Wiring Errors 1 Switching wire colors when extending 3 wire meter cables 2 Routing meter wiring in the same conduit as AC power Meter cables are low voltage If site practice allows tie wrap meter cabling to the outside of conduit rather than share a conduit with AC power Aegis User 7 08 58 AEGIS User Manual 5 2 Configuring a New Meter Select Digital Type To change a meter type key Tower Make up 0 UP or DOWN to the target meter 98600 gal and press ENTER and Key UP and ENTER Configure Configure lt Diagnostic Description lt H Tower Make up Key DOWN to Digital Type E ian Displays current type in this example i a a contact head meter Digital Type r Contact Meter Key UP or DOWN to scroll types Di gital Type and key ENTER to select Contact Meter Se Key ENTER and change the Type Key EXIT to remain as a Contact Meter Select Contact Set to use input O for Digital Type a
44. Output targets Enabling Outputs Outputs 1 to 5 are AC power switching relays that are enabled to power pumps solenoids or motorized valves Outputs 6 to 9 are frequency controlled outputs that are enable to proportionally control pumps Aegis User 7 08 98 AEGIS User Manual 11 4 Enabling Inputs amp Outputs Enable an Input To enable a sensor meter volume or contact set input Thu 16 54 10 press ENTER and DOWN to Enable I O S N A076X0486 at the power up or day time display lt then Enable I O lt Passwords A Enable Inputs gt A Key ENTER Enable I O In this controller 12 of the 26 sensor meter volume and contact set inputs are unused n Key ENTER to select one 12 unused Key UP or DOWN to scroll through the Enable Inputs unused disabled inputs lt Key ENTER select one S sehsorenpur t J or EXIT to not select any inputs or Enable Inputs watermMeter_q e In this example we ll Enable WaterMeter_Q After enabling scroll to WaterMeter_Q input re name it and configure it for use Sidebar Enabling Inputs In each controller there are 26 inputs 14 Sensors A to N and 12 Meter Volume or Contact Sets O to 2 Of the 14 sensors 7 A G have terminal blocks where you can connect actual sensors and 7 H N are Phantom and are used for manual and calculated values Of the 12 Meter Volume or Conta
45. Percentage Time Base Feed Time Modulate Timed Cycling Holding Time Meter paced feeds don t use Special Controls amp we re back at the top of the Diagnostic scroll 2 10 Feed Diagnostics Diagnostic continued volume today 0 535 G N Owes 0 049G Special Control none Current State Operational Sidebar AEGIS controllers are Diagnostic intensive Each sensor water meter contact set relay frequency output and the controller itself has a Diagnostic display sequence Diagnostic tells you a lot about the operation of the treatment system and is invaluable if you have a configuration problem or feed fault Even if you have Passwords turned ON any user can still view the Diagnostics An uniformed user reading you the Diagnostic screen sequence may save you a site trip Browser access available locally or remotely via a VPN or modem connection displays all controller Diagnostics Aegis _User 7 08 32 AEGIS User Manual 3 0 Biocides Feeding by Time amp Date 3 1 Setting amp Viewing Events f Biocide Feed Events To add a BioFeed Event for a pump or solenoid l i key UP or DOWN to the target Pump oxidant 5 _OFF No Control Sig Key ENTER amp DOWN to BioFeed Event amp key ENTER BioFeed Event ail Configure Key ENTER to Add an Event CET ey Displays the current number of events zero Add an Event Yes 0 Events Key UP or DOWN to change the Day
46. Reset to Factory 10 32 20 08 07 Admin Password Default Watchdog Resets 0 Firmware Version A587 Reset to Factory Sets all volume water meter totals for this year and the previous year to zero Aegis User 7 08 104 AEGIS User Manual 12 0 Product Support 12 1 Application amp Technical Support www aquatrac com Aquatrac Instruments Inc 1957 Cedar Street Ontario CA 91761 7 00AM 4 00PM PACIFIC TIME 800 909 9283 CENTRAL TIME ZONE 847 550 0948 AEGIS controllers are supplied in a many configurations some with specialized controls The controller Serial Number and Part number available on the top center of the controller circuit board helps us to help you Replacement Sensors and Parts Controller User and Technical Manuals Click on the AEGIS controller icon www aquatrac com Upgrade Kits Controls and sensors can be added to installed controllers Upgrade kits include sensor entry fitting driver card and installation instructions Click on the AEGIS controller icon www aquatrac com AC Power Fuse This fuse provides AC power to the pumps solenoids and valves connected to Relays 1 to 5 Protects Rating Type Manufacturer Vendor Power Relays Littlelfuse Type 217P 250VAC 1to5 5 Amps 120VAC Digikey Part F2395 ND AC Fuse 2 5 Amps 250VAC Digikey Part F2400 ND 5mm x 20mm Www digikey com 1 800 344 4539 OR Fast Acting Aquatrac Part AG FUSE 10 fuse ki
47. S 600 us 4 Key ENTER to modify Y Delay on Alarm prevents nuisance alarms by requiring in this example 5 minutes of fault occur before alarming Delay on Alarm 5 0 minute Set the Delay to zero minutes if you require an immediate alarm Key ENTER to modify Sidebar Sensor Alarms Nuisance alarms tend to be ignored Select alarm limits that represent control fault or sensor failure Example If the tower make up is 450uS and you are controlling at 2 5 cycles or 1125uS Set the Low Alarm at 900uS because if you ever get to 900US you have a leak or water loss causing undercycling If your biocide feed Prebleed lowers the conductivity below 900uUS then set the Low Alarm lower Set the High Alarm at 1300uS because if you ever get to 1300uS bleed control has failed The bleed solenoid has faulted The bleed line is blocked or valved off The controller relay fuse has opened You re being punished for a misspent youth If your biocide feed Lockout period results in a higher conductivity increase the High Alarm If your treatment program scales at a conductivity higher than 1250uS without scaling reduce the High Alarm If the feed program has a tight temperature limit set the Temperature alarm to alert you Aegis User 7 08 43 AEGIS User Manual To adjust a sensor alarm key UP or DOWN to the target sensor and press ENTER Key UP and ENTER Alarms Key UP or DOWN to select High Alarm Low Alarm or
48. Sensor Watch conductivity display as a diagnostic If conductivity does not rise during the Sensor Watch below Turn ON 1 2 period then we didn t open ve the valve amp didn t Sample TurnOFF If it s erratic during the 1 2 period an frequently falls to low values then we re flashing at the sensor Conductivity If Conductivity doesn t fall during the 2 3 period then we re not closing the valve or solenoid At the end of Measure 1 the Blowdown valve opens and initially the conductivity increases as the sensor heats On smaller boilers you may TUMON eeeaganreeseecespeosesnenpeaeeces then see the conductivity fall as T4 1OFF 77777 lower conductivity feedwater enters the boiler We a h At the end of each Blowdown period the conductivity should be lower as the conductivity trends to Time the Turn OFF setpoint Sample Measure Blowdown Measure Blowdown Conductivity Sidebar Flashing Flashing at the conductivity sensor causes poor control because the sensor is measuring a varying mix of water and steam Frequently flashing deposits solids on the sensor fouling it an causing a low conductivity measurement In some cases you can limit flashing by reducing the flow at the throttling or needle valve Effective Blowdown Control Accurate non drifting blowdown control requires a non flashed sample at the conductivity sensor fixed Measure time and throttling valve setting
49. VDC supply to power the loop Open Loop Alarm The DC isolated 4 20mA output alarms on an open loop or a loss of loop power Aegis User 7 08 90 AEGIS User Manual 10 1 4 20mA Output Setpoints In this example a conductivity sensor Sensor Setpoint is controlling the 4 20mA out current A The 100 0 indicates that the conductivity 4 20mAOutput_D D is greater than the 20mA setpoint 20 00ma 100 0 To view or modify the 20mA Setpoint press ENTER Setpoints lt Configure Key ENTER Setpoints 4mA Setpoint lt lt l Ous Key DOWN to 20mA Setpoint a a J When the conductivity sensor measures than 1000uS the loop current is 20mA P g Key ENTER to modify 20mA Setpoint 1000us t Key UP or DOWN to change the underlined digit Editing or Exit Press ENTER to save the new 20mA Setpoint 2500us gt or EXIT to leave unchanged hen Key RIGHT to move the underline 20mS Setpoint lt Key EXIT twice to view the effect of the new setpoint 2500us 4 In the example the loop current is now 15 46mA 4 20mAOutput_D D 71 4 of the OuS to 2500uS span is 1785uS 15 42mA 71 4 Sidebar Setpoints Setpoints may be positive or negative numbers The 4mA Setpoint may be greater or less than the 20mA setpoint so that the loop current may either increase or decrease as the controlling sensor increases A pH sensor can control an acid pump on one 4
50. Volume from midnight on the water meter connected to input O Press ENTER to view set Type Annual Volume Water meter O controls the pump connected to output 1 which is OFF waiting for the meter to measure make up Press ENTER to view set Feed Rate Feed Limits An ORP sensor is connected to controller input C Aegis controllers may include 1 4 ORP or pH sensors Press ENTER to Calibrate view Diagnostics Configure The ORP sensor frequency controls a pump connected to output 6 which has pumped 1 317 Gallons this feed cycle Press ENTER to Adjust Setpoints change Pump Type A temperature sensor is connected to controller input B It s not used for control so it displays after the controls Press ENTER to Calibrate view Diagnostics Configure Aegis User 7 08 8 1 0 Day to Day Operation 1 1 Main Menu Thu 16 54 10 S N A076X0486 Alarms none Conductivity A 1134 us Bleed Solenoid 2 ON 25 6 min Tower Make up 0 26500 gal Inhibitor 1 OFF Setpoints ORP Sensor C 286 4 mV Oxidant Pump lt 6 ON 1 317 Gal Temperature B 86 24 F continued AEGIS User Manual Some controllers may include corrosion rate monitoring A copper corrosion sensor is connected to controller input E amp measuring a rate of 0 26 mils per year Press ENTER to change metals view diagnostics Users may use the controller to key in results of chemical tests These
51. a Both are grounded to the ground screw labeled Aa located on the bottom center of the aluminum backplate A USER WARNING CAUTION Water Treatment Controllers operate steam and water valves and may pump hazardous corrosive and toxic chemicals Opening the controller enclosure exposes user to the risk of electrical shock at power line voltages Understand fully the implications of the control setpoints interlocks and alarms that you select Harm to personnel and damage to equipment may result from mis application Unplug or turn OFF the AC power to the controller if you have any concerns regarding safety or incorrect controller operation and notify supervisory staff YOUR CONTROLLER AEGIS Controllers are supplied in many different configurations part numbers and sensor sets Applications extend beyond water treatment The HELP section depicts the installation plumbing header showing the sensor set supplied with your controller It also includes the information for terminating the sensors supplied with your specific controller part number The START UP section is specific to your application and details modifying the default controller settings for your site Aegis User 7 08 4 AEGIS User Manual Navigation 1of3 UP amp DOWN to view options KEYPAD or to EDIT numbers If you get lost in a sub menu press EXIT amp you ll stop what you re doing amp move back to the main Move RIGHT to select next gt An i 3 field when EDITi
52. adjust Re Sample Time is the time the valve is closed if the conductivity is lower than the Turn OFF setpoint the end of Measure Time Varies widelt from 15 minutes to 16 hours 960 minutes Key ENTER to adjust Key ENTER to select a Fail to Sample input Sidebar Blowdown B2 5 OFF Wait lt ana Configure lt H Alarms Limits 4 lt and Special Control Capture Sample Special Control Capture Sample Sampling Time 30 sec Measure Time 60 sec Blowdown Time 120 sec Re sample wait 4 120 0 min Fail to Sample None fe Re sample Time Varies with boiler load type Process boilers check conductivity frequently Lightly loaded or constant load boilers check every few hours Aegis User 7 08 74 AEGIS User Manual 7 2 Adjusting Boiler Blowdown Timing Captured Sample Adjust Timing To view or adjust the Captured Sample blowdown Blowdown B2 i Sampling Time key UP or DOWN to the target blowdown valve and press ENTER OFF wait sla Key DOWN and ENTER Configure Configure ry Alarms Limits 4 lt ana Special Control Capture Sample Key ENTER to adjust Sampling Time Sampling Time or key down to view adjust other blowdown timing 30 sec Key UP to Special Control and key ENTER twice Key UP or DOWN to change the underlined digit Key RIGHT to move the underline Editing for Exit NTER K ee 45 sec gt Press E to save t
53. al This biocide pump uses the Prebleed Lockout Special Control We re currently ON and the Lockout LO expires in 136 8 minutes so the Lockout extends 90 minutes after feed ends Sidebar 3 3 Event Diagnostics Diagnostic Biocide 123 lt 4 ON 43 2min anid 4 Diagnostic lt Setpoints Current State Operational No Control Events cycle 28 Day 8 Events Day 12 ON today 43 2 min Time Owed 16 8 min t Prebleed Lock ON LO 136 8m When feeding biocides based on time Relay 1 to 5 or volume Frequency Controls 6 to 9 you often want to know if you have fed when feed ends or why you aren t feeding Diagnostic provides this state information Prebleed counts down in Diagnostic amp the feed starts Lockout may extend beyond the end of the feed period stopping the tower from bleeding Here s why the bleed is ON but the conductivity is less than the bleed setpoint Aegis User 7 08 39 AEGIS User Manual 4 0 Sensors Conductivity pH ORP Corrosion 4 20mA 4 1 Sensors 101 4 20mA Inputs Specialized sensors for ClOz2 Chlorine and other process and water treatment parameters are connected to the controller 4 20mA inputs where they are used for control monitoring and data logging Sensor Controls Operating Issues Notes Measures Conductivity Cooling Tower Boiler The ratio of Tower to Make up water TDS cycles
54. and Trim span places the current loop into Manual mode and then adjusts the zero 4mA or span 20mA level Set your digital voltmeter to measure mA and install it in series with the current loop wiring Series Disconnect one 4 20mA wire from the controller terminal Connect the wire to the DVM or Common and connect the DVM to the wiring terminal If UP or DOWN stops changing the measured current it s because you ve hit the limits of loop adjustment Resolution The nominal resolution of the current loop is 0 1 Example If 4mA OuS and 20mA 1000uS the current loop has 1uS resolution If 4mA OuS and 20mA 10000uS the current loop has 10uS resolution Aegis User 7 08 93 AEGIS User Manual 11 0 System Settings 11 1 Passwords Controllers are defaulted to Keypad Password OFF Turn ON Passwords Thu 16 54 10 lt 4 To turn ON the Keypad Password S N AO76X0486 press ENTER and DOWN to Configure at the power up or day time display i lt then Configure at Key ENTER f ey congue Time amp Date y then Key DOWN to Keypad Password Keypad Password No Key ENTER DOWN ENTER to turn ON Keypad Password Keypad Password Yes 4 lt You ll view the Login display when you select a password Password ON protected part of the controller See Login Displays Fe ai Key ENTER Login 4 yes Key UP or DOWN to change the underlined letter or digit Key RIGHT to move the underline Editi
55. atures Changing units does not change data already logged Metric Inputs Non 4 20mA temperature inputs are converted to Centigrade using the default offset and gain for each of the thermal input type If you switch back to U S units temperatures are converted to Fahrenheit using the default offset amp gain removing the effect of any user calibration Inventory volumes are calculated in Liters but units are not changed ppm calculations now assume metered volumes in Liters and not gallons Metric Outputs Pumped volumes are reported in mL amp Liters Biofeed event volumes are in Liters and not Gallons The controller uses the units of the controlling sensor for setpoints If a water meter was set to measure Gallons prior to switching the Metric Units it will still display Gallons on the meter and wherever it s used for control Aegis User 7 08 100 AEGIS User Manual To view or adjust the configuration of the whole controller press ENTER and DOWN to Configure at the power up or day time display Key ENTER Configure Requires LB Option Load Factory configures the controller to one of the 1 to 15 configurations shipped with the controller This controller is currently running the COT2OX Conductivity dual biocide amp ORP configuration View and select an alternative controller configuration by keying ENTER Load Config returns to the last saved configuration Key ENTER select Yes amp ENTER
56. ay UP DOWN sequence and reorders the display 86 3 F OR or If the sensor is in use for control used to compensate Conductivity another sensor or used for inventory or manual entry it will In use error lt NOT be disabled amp you ll see this display Key EXIT Sidebar Disabling a sensor removes it from the display and all selection menus used for control and compensation Data logging stops for disabled sensors Refer to 11 4 Enabling Inputs amp Outputs if you need to re enable a disabled sensor Use Disable Input to unclutter the display reducing scrolling key presses Display Sequence The controlling sensor is immediately followed by the controlled pump or solenoid so you can UP DOWN between the two Sensors unused for control are next followed by Pumps or Solenoids with BioFeed events then unused outputs without control or events Pumps and valves controlled by more than one sensor use only the first sensor for sequencing the display If a sensor controls more than one output then more than one output will follow the sensor in the display sequence Aegis User 7 08 48 AEGIS User Manual 4 5 Sensor Compensation Some sensor compensation like thermal compensation is user selectable Other types of compensation are set by the sensor driver card like corrosion rate Each sensor type has its own set of compensations Sensor Compensation User Sets or Selects Type Cond
57. contact set and OFF Key ENTER and UP to Configure to So cHerer se R modify the R input name to reflect its use as contact set Sidebar Volume amp Contact Set Inputs Controller inputs O through V may be set individually to be a water meter or a contact set The controller is defaulted to meters at inputs O to R and contact sets at inputs S to V Phantom Inputs Controller inputs W through Z do not have physical terminals but may be enabled individually as either water volume meters or contact sets Phantom meters are used as Rate to volume or Copy Volume to targets Phantom contact sets are used to Mirror controller outputs and then to sequence or block other controller outputs Aegis User 7 08 80 AEGIS User Manual To view or modify contact set Alarms key UP or DOWN to the target contact set input and press ENTER Key UP and ENTER Alarms Alarms if the contact set is ON today for longer than the ON Time Alarm Timing resets every time contact set turns OFF and at midnight Alarms if the contact set is OFF today for longer than the No Flow Alarm Timing resets every time contact set turns ON and at midnight Keying ENTER to modify Key UP or DOWN to change the underlined digit Key RIGHT to move the underline Press ENTER to save the new No Flow Alarm or EXIT to leave unchanged In this example we ve reduced the No
58. ct Sets 8 O V have terminal blocks where you can connect actual meters or contact sets and 4 W Z are Phantom and are used for copy targets and mirroring Enabling Outputs Outputs are enabled in the same way as inputs Each controller has 9 outputs Outputs 1 5 are relays which switch controller AC power to turn ON and OFF pumps valves and solenoids Outputs 6 9 are frequency controls which are connected to frequency controlled pumps by a 2 wire control cable The pumps are plugged into the AC power and the controller modifies the feed rate by changing the pump stroke frequency Aegis User 7 08 99 AEGIS User Manual 11 4 Metric amp U S Units Switch to Metric To view or adjust the Metric U S Units setting press ENTER and DOWN to Configure Thu 16 54 10 at the power up or day time display S N AO76X0486 Configure i Key ENTER Configure r 2 Time amp Date y This controller in currently set to U S units Metric Units Temperatures are in F and volumes NO 4 greater than 100mL are in Gallons lt and Metric Units Yes 4 lt Metric Units Yes Key ENTER to DOWN to switch to Metric Units Key ENTER to set Metric Units or EXIT to leave as U S Units gt 4 Sidebar Commissioning Select U S or Metric Units when you commission or install the controller Data logging uses the Units setting for the units on logged volumes and temper
59. d by selecting a Rated SPM ProMinent 1001 type pump 180 Sidebar Pump Type If you select one of the 6 built in ProMinent pumps the feed volume mL stroke and maximum frequency are correctly and automatically assuming a nominal 40pis feed line pressure If you select Other as a pump type you ll need to provide both the nominal mL stroke and maximum stroke rate Pumps with maximum stroke rates from 50 SPM to 400 SPM are supported by the controller Relay Controls Frequency controlled pumps may be switched ON OFF by one of the controller s relays 1 to 5 Disconnect and remove the frequency control cable and plug the pump power cord into the controller This is not the best use for a frequency controlled pump but if you need more than the controller s four frequency controls its an option Fd Aegis User 7 08 85 AEGIS User Manual To installa new a Pump Type key UP or DOWN to the target pump and press ENTER then UP Key ENTER Pump Type Displays one of six default pump types or Other In this example Treatment 9 controls a ProMinent 1001 type pump Key ENTER to modify or install Key ENTER Pump Type Other If you are not installing one of the 6 built in ProMinent pumps shown in the following table Key UP or DOWN to the installed Pump Type and key ENTER or EXIT to leave the Pump Type unchanged In this example we ve changed the pump controlled by Treatment 9 fro
60. e Prebleed value 750 uS Prebleed lowers tower conductivity before feeding biocide so make up does not dilute the biocide Biocides are preferably fed when tower thermal load is low amp make up is therefore limited Lock out prevents tower bleed during the time required for a biocide to act It may not be necessary to Lock Out lightly loaded towers Do not Lock out heavily thermally loaded towers for extended periods Aegis User 7 08 35 AEGIS User Manual To view or modify the Lock out time for a biocide feed pump key UP or DOWN to the target Pump Key ENTER amp DOWN to Configure amp key ENTER Key UP to Special Control amp key ENTER Key ENTER Prebleed Lock Lock out time is currently 120 minute Press ENTER to modify Key UP or DOWN to change the Lock out time Key RIGHT to move the digit underline Press ENTER to set the Lock out time or EXIT to leave unchanged In this example we ve reduced the Lock out time from 120 minutes to 90 minutes Set Lock out time to zero for no Lock out Sidebar Lock out prevents tower bleed during the time required for a biocide to act It may not be necessary to Lock Out lightly loaded towers Do not Lock out heavily thermally loaded towers for extended periods 3 2 Prebleed Lockout Lockout Time Biocide OFF No Event lt ana Configure lt H Alarms Limits lt and Special Controle Prebleed Lock ana 4 Lock out time
61. e it Bleed 101 6 2 Bleed Alarms 6 3 Variable Cycles 6 4 Diagnostics 7 Boiler Blowdown 7 1 Boiler Blowdown 101 7 2 Adjusting Boiler Blowdown Timing 7 3 Fail to Sample 7 4 Sensor Watch amp Blowdown Diagnostics 8 Flowswitches amp Contact Sets 8 1 Contact Sets 101 8 2 Switching Meters amp Contact Sets 8 3 Contact Set Alarms 8 4 Mirroring Outputs 8 5 Inverting Contact Sets 8 6 Contact Set Controls 9 Frequency Controlled Pumps 9 1 Selecting a Pump 9 2 Copying a Pump Volume 9 3 Adjusting ml stroke 9 4 Setting SPM Rating 10 4 20mA Outputs 10 1 4 20mA Output Setpoints 10 2 4 20mA Output Configuration 11 System Settings 11 1 Passwords 11 2 Time amp Date 11 3 Keypress Alarm Log 11 4 Enabling Inputs amp Outputs 11 5 Metric amp U S Units 11 6 Configurations 11 7 Communications 11 8 System Diagnostic 12 Product Support 12 1 Application and Technical Support 12 2 Specifications C LB LAN Browser Option R RM Remote Modem Option Aegis User 7 08 3 AEGIS User Manual Safety A Electrical Shock Hazard Opening the controller enclosure with the controller plugged in exposes the user to AC line voltages on the lower of the two controller circuit boards Ground the controller AC power to the ground screw labeled D and located on the bottom right of the aluminum backplate External 120VAC socket or optional plug boxes are provided with controllers installed in North Americ
62. e the underline Press ENTER to save the new Description or EXIT to leave unchanged In this example we ve changed the name of the Conductivity sensor connect to control input A from Conductivity to TWR2 COND Sidebar Description editing using the keypad is limited to capital letters and numbers to keep scrolling time reasonable Browser users are not limited but all user text editing is rejected if it contains HTML delimiters like lt gt Conductivity Conductivity HA 1134 us lt ana Configure Diagnostic 4 4 Sensor Configure Edit Description Description Editing or Exit TWR2 Ctivity gt then Description TWR2 COND A Avoid assigning duplicate or similar names for sensors requiring the user to identify using only the identifying letter A to N Each sensor has only one name It s the same for both Keypad LCD and Browser users and is included in the controller data logs Aegis User 7 08 46 AEGIS User Manual To modify sensor Resolution the number of digital after the decimal key UP or DOWN to the target sensor and press ENTER Key DOWN and ENTER Configure Key DOWN to view Decimal digits Press ENTER to modify Key UP or DOWN to change the resolution Press ENTER to set a new Decimal digits or EXIT to leave unchanged In this example we ve changed the number of digits af
63. ed Aegis User 7 08 68 AEGIS User Manual To view or adjust the Varying Cycles setpoints key UP or DOWN to the target valve or solenoid and press ENTER Key ENTER Setpoints When the make up conductivity less than Low Range in this example 350 uS the bleed controls Low Cycles Key ENTER to modify in this example Low Cycles 6 1 so the tower sump would be nominally 2135 uS 350 x 6 1 Key ENTER to modify When the make up conductivity less than Medium Range in this example 650 uS the bleed controls Med Cycles Key ENTER to modify in this example Med Cycles 3 3 so the tower sump would be nominally 2145 uS 650 x 3 3 Key ENTER to modify When the make up conductivity less than High Range in this example 1000 uS the bleed controls High Cycles Key ENTER to modify in this example High Cycles 2 1 so the tower sump would be nominally 2100 uS 1000 x 2 1 Key ENTER to modify If the tower sump exceeds Max Conduct 2400 uS in this example the bleed opens to limit the conductivity Key ENTER to modify Aegis User 7 08 69 6 3 Variable Cycles Setpoints Varying Cycles Tower Bleed 2 1 23hrs Setpoints v Test Prime Low Range 350 us Low cycles lt H 6 100 cycles G Med Range H 650 uS cS Med cycles lt H 3 300 Cycles G G High Cycles H 2 100 cycles Max Conduct lt 2400 us AEGIS User Manual To view the bleed Diagnostic key UP o
64. ed Output or EXIT to leave unchanged Bleed Output 4i Tower2 Bleed In this example we ve switched the Bleed Output from Tower1 Bleed to Tower2 Bleed Sidebar Most controllers are single tower amp there only have one bleed solenoid or valve Bleed Output allows sites with more than one bleed control connect a bleed with its biocide feeds Alternate Feed Method You can also use Prebleed to feed another chemical prior to each BioFeed by powering the pump on the Bleed Output It s a simple way to sequence feeds Remember you don t need to use both Prebleed and Lock out The use of these controls will vary with the chemical fed and the type of water treatment system amp the time of day when feed occurs Prebleed Sensor is viewed and adjusted in the same way as Bleed Output Aegis User 7 08 37 AEGIS User Manual To view or modify the Event Cycle for a biocide feed pump key UP or DOWN to the target Pump Key ENTER amp DOWN to Configure amp key ENTER Key DOWN to Event Cycle This pump repeats its biocide events every 28 Days Press ENTER to modify Key UP or DOWN to change the Event Cycle Press ENTER to select a new Event Cycle or EXIT to leave unchanged In this example we ve changed the Event Cycle from 28 Days to 7 Days 3 3 Event Cycle Configure Event Cycle Biocide 456 X ON Owes 24 1min lt 5 lt ana Pe Alarms Limits r y
65. eed Valve 2 were Adjusted Key RIGHT to view the User ID and the Time amp Date stamp for the Activity Key RIGHT again to get back to the Activity or key DOWN to scroll the User ID and Time Date stamps Scroll UP or DOWN through the Activity Log Keying RIGHT to view the User Ids amp Time Date stamps Sidebar Keypress Alarm Log The log contains the last 25 activities that effect the operation of the controller Most recent activities first Both keypad and browser user activities are logged User IDs 11 3 Keypress Alarm Log View Activity Log Alarms 4l B 2 lt 4 and 4 Activity Log Clear Alarms Bleed valve 2 gt Alarms Adjusted _ Configure5 7 17 19 23 08 07 Bleed valve 2 gt Alarms Adjusted t PH Sensor C gt New driver card t DE e Keypad Password ON Logs the User IDs listed in Section 11 1 Sidebar Default Passwords Keypad Password OFF Logs all User IDs as Keypad Browser user IDs are always logged because login is required to browse Actions taken by the controller like configuring a new driver card use the System used ID Aegis _User 7 08 97 AEGIS User Manual 11 4 Enabling Inputs amp Outputs Enable I O Thu 16 54 10 S N A076X0486 then Enable I O H Passwords Displays the number of sensor inputs and Enable Inputs meter contact input available for enabling 12 unused s Key ENTER to select one
66. eed meter on pump outlet or inlet Calculate tank level from fed volume More than one pump may share a tank Typical Base Feed Turn pump ON for 45 seconds every 5 minutes Feed 4 5mL minute User Support Relies on user to correctly set pump stroke amp frequency Won t let you set feed rate greater than the pump can deliver Auto switches from proportional to MAX rate depending on feed mode You can select one of 6 of the most popular ProMinent pumps for each frequency control which automatically sets the maximum stroke rate and volume per stroke OR you can define a mL stroke and maximum frequency for any manufacturer s frequency controlled pump Aegis User 7 08 AEGIS User Manual This is the power on day of week amp time display The Serial Number tracks special features amp the sensor set installed in your controller Press ENTER to view set system settings Active alarms are displayed by the letter A Z of the input or the number 1 9 of the output Press ENTER to reset alarms to view alarm detail or to scroll the key press log Present value of the conductivity connected to sensor input A Updates every second Press ENTER to Calibrate view set Alarms Compensation Conductivity A controls the Bleed Solenoid connected to output 2 so they display together The Bleed has been ON for 25 6 minutes this cycle Press ENTER to view set Setpoints Configuration
67. emicals Make up Bleed and Sensor methods responds to increasing load by increasing the volume fed to maintain a target ppm Each method has its fit for cost reliability feed accuracy and water treatment system size amp type Feed How does it work Chemical Typical Method Fed Applications Make up Cooling Towers Inhibitor Towers may use more than one Feed when the cooling tower make up source or may control make up water meter based on bleed volume measures volume Boilers Boiler Treatment Boilers may use a feedwater or Feed when the boiler feed softened make up water meter water meter measures A contact set ON when the volume feedwater pump is ON is often used as a make up meter Bleed Bleed amp Feed Inhibitor Cooling towers where the bleed Feed when the bleed solenoid is ON more than 50 of solenoid is ON the time Bleed then Feed Feed after the bleed turns Inhibitor Towers with correctly sized bleeds OFF proportional to the time ON less than 50 at maximum the bleed was ON load Sensor ON OFF pH ORP conductivity Above the ON setpoint the temperature steaming rate pump turns ON and below corrosion rate drop count GPM the OFF setpoint the pump is Acid Oxidant make up amp many other sensors OFF Amine Sulfite control these pumps Proportional Dispersant Feed rate varies linearly from Proportional feeds use variable OFF at the Turn OFF frequency time modulation and setpoint to ma
68. esistance for a corrosion rate that s updated every 2 minutes Although it s not as accurate as weight loss it responds immediately to changes in corrosivity amp is sensitive enough to detect when you are feeding oxidant which marginally increases corrosion rate Sensor life in treated cooling waters is many years Corrosion rates are measured in mils year MPY where 1mil 0 001 LPR is a proven technique for real time measurement of general corrosion rates for all of the metals and alloys in typical cooling water systems It is not useable for aluminum or stainless steels which pit rather than corrode uniformly Aegis User 7 08 51 AEGIS User Manual To view or modify Calculate ppm sensors key UP or DOWN to the target sensor and press ENTER Key DOWN and ENTER Configure Key DOWN to Compensation Displays Calculate ppm Compensation type Press ENTER twice to view settings or modify The Chemical Volume meter measures fed volume and is installed on a pump OR is one of the Frequency controlled pumps 6 to 9 Press ENTER to modify The Make up Volume meter measures the tower OR boiler make up volume Press ENTER to modify Cycles method may be Fixed as in this example OR calculated based on the ratio of Make up to Bleed water meters Press ENTER to modify Since this example is Fixed Cycles we need to tell the controller the cycles of concentration 2 5 Cycles in this example Press ENTER to m
69. ess ENTER to change the Volume day limit then or EXIT to leave unchanged Volume day lt H 1 5 G In this example we ve decreased the Volume day limit from 23 8 to 1 5 Gallons Sanity Check An 18mL minute pump would have to be ON for more 3 5 hours to trip the alarm Sidebar Feed Limits are times for pumps amp solenoids controlled by relays 1 to 5 and volumes for frequency controlled outputs 6 to 9 Set the limits so that worst case operation on the hottest day or highest boiler load will not trip the limit avoiding nuisance alarms In more critical applications run the limit close to actual operating volume or time amp use the limit alarms to flag atypical system operation Typically you are only concerned with either the Actuation or Day limit Examples Inhibitors usually use the Day limit for both cost amp ppm objectives setting the Actuation limit so it never trips Oxidant feeds usually use the Actuation limit to prevent overfeeds amp to detect loss of feed setting the Day limit so it never trips Acid feeds would use both Actuation and Day limits since different fault types trip each limit alarm Aegis _User 7 08 27 AEGIS User Manual To view or modify the Alarms OFF on Alarm used ona pump or solenoid key UP or DOWN to the target Pump amp press ENTER Key ENTER amp DOWN to Alarms Limits amp key ENTER Key ENTER amp DOWN or UP to OFF on Alarm Key ENTER DOWN ENTER to cha
70. fault Yes 4 lt Edit Passwords Yes Key ENTER at Edit Passwords to view or modify your password Key UP or DOWN to change the underlined letter or digit Key RIGHT to move the underline Eqiting Jor Exit Press ENTER to change your password OPL gt or EXIT to leave unchanged PEA J In this example we changed Operator1 s default password from 1 to OP1 Sidebar Modify Passwords Because all 8 default passwords are listed on the previous page You ll should modify all 8 passwords when you initially turn ON passwords Passwords are limited to 8 capital letters and numbers Any space in a password ends the password on both editing and Login password entry Two users cannot share the same password because the password is used to identify the user The controller displays Password Fail on a duplicate password Reset Passwords If you forget your password a Reset Password is available from Aquatrac amp specific to your controller s serial number that sets all passwords to default Passwords This menu item only displays on controllers that have turned ON Keypad Password Aegis User 7 08 95 AEGIS User Manual To view or adjust the Time amp Date press ENTER and DOWN to Time amp Date at the power up or day time display Key ENTER Time amp Date See Controller Response to a new Time amp Date on this page Sidebar prior to adjusting Display current date and time Key UP or DOWN to
71. flowswitch boiler ON line switch Contact Set 4 lt or tank level switch Digital Type Turbine Meter e Volume contact or K Factor matches If you change meter types verify that f the installed meter NX Sidebar Digital Type The eight controller inputs O to V may be configured to any combination of meter and contact set inputs Meter inputs measure volume and contact sets measure state ON or OFF Contact Set Debouncing Mechanical water meter contact sets bounce when closing or opening The controller software debounces so that you don t measure extra counts when you select Contact Meter Maximum Turbine Pulse Rate Turbine pulse streams are not debounced and will measure up to 400 pulses sec or Hertz 400 Hz is faster than the pulse stream from the Seametrics type meter at maximum K Factor Aegis User 7 08 59 AEGIS User Manual 5 3 Feed Verification amp Inventory Feed Verify Select To configure or view a verify meter key verify Meter R UP or DOWN to the target meter 4 265 L and press ENTER and Key UP and ENTER Configure Configure Diagnostic t and Key UP and ENTER Feed Verify Feed verify zq NO and Key DOWN and ENTER to initially select Feed verify Feed Verify OR ENTER twice to view settings vae 4 il q The Verify Output is the feeding pump or solenoid In this example we ve selected the Inhibitor Pump
72. hange 4 times as the corrosion rate Measured Level driver sequences through a measurement 1426 2 mv about every 30 seconds Input card ID is nominally 1600mV for dual corrosion rate Input card ID and 1510mvV for a single corrosion rate driver card 1595 9 mv Drive Level is used to offset Measured Level Measured Level Drive Level Drive Level Anodic or Cathodic or Pitting level 1209 4 mv Sidebar Pitting Level Linear Polarization corrosion rate sensors work correctly unless pitted Pitting usually only occurs under deposits in cooling water systems since water treatment prevents pitting on exposed surfaces Alarms If the magnitude of Pitting Level exceeds the Anodic or Cathodic level the controller sets the Sensor Pitted alarm at corrosion rates gt 2 mpy If a conductivity sensor is selected and more than 50 of the measurement voltage is used to overcome the water resistance the controller sets the Low Conductivity alarm These alarms alert you to error in the displayed corrosion rate Aegis User 7 08 56 AEGIS User Manual 5 0 Measuring Volume WaterMeters Inventory Verify Feed 5 1 Meters 101 Controller Meter Inputs Four controller inputs O to R are defaulted to meter inputs Four controller inputs S to V may be user configured as meter inputs to a maximum of 8 Any Contact Head Turbine or Feed Verify type meter connects to
73. he 2nd setpoint type amp value This example is a meter paced frequency controlled pump so the 2nd setpoint is the feed ppm for 75 Gallons Meter paced feeds display the volume at the last feed This example shows feed 21300 Gallons Since P now measures 21350 Gallons the next feed will occur 21375 Gallons Feed events can occur in parallel with other controls In this example there are no feed events set amp it s Day 12 Thursday of week 2 of the 28 day 4 week feed cycle Sidebar 2 10 Feed Diagnostics Diagnostic Product Pump 7 ON Owes 0 102G lt ana Diagnostic lt H Setpoints 4 Current State Operational Control by P 21350G gt Measure volume 75 G then Feed 25 pm Last fed at 213006 t Cycle 28 Day 0 Events Day 12 continued Diagnostics vary with the output type and control Relays 1 to 5 use ON time instead of the volumes of Frequency controls 6 to 9 The main menu displays Blocked amp the blocking output OR Lockout amp the Interlock input OR Alarmed if a pump cannot feed Aegis User 7 08 31 AEGIS User Manual Frequency controls 6 to 9 display Volume fed today from midnight Relay controls 1 to 5 display the ON time from midnight Frequency controls 6 to 9 display Owed volume Relay controls 1 to 5 display owed time Displays active Special Control Bleed amp Feed Bleed thenFeed
74. he new Sampling Time Ne J or EXIT to leave unchanged then In this example we ve increased the Sampling Time lt lt Sampling Time from 30 to 45 seconds 45 sec Sidebar Measure Time Blowdown Time and Re sample wait are viewed and modified in the same way as Sample Time Whenever you modify Captured Sample timing a new Sample time starts immediately Setting a Re sample Wait Time Energy softened make up and treatment chemicals are lost during each Sample so its appealing to set a long Re sample Wait time Set the Re sample Wait time to reflect the time it takes the boiler to increase conductivity under the worst case heaviest load and lowest percentage of condensate return A high percentage of condensate return usually means that it takes longer to increase boiler water conductivity Aegis _User 7 08 75 AEGIS User Manual To view or install a Captured Sample blowdown Fail to Sample switch key UP or DOWN to the target blowdown valve and press ENTER Key DOWN and ENTER Configure Key UP to Special Control and key ENTER twice then UP Key ENTER to select a Fail to Sample thermal switch Key UP or DOWN to view the enabled contact set inputs In this example we ve enabled an input and named it B2 FTS Switch Press ENTER to select a Fail to Sample switch or EXIT to leave as None In this example we ve set the Blowdown B2 Fail to Sample switch as B2 FTS Switch Sidebar Fail to Sample A
75. hecking amp Clearing Alarms Key DOWN from the power ON display to view alarms In this example the sensor connected to input B and the pump or solenoid to controlled by Relay 2 have alarmed Press ENTER to view or clear Alarms Press ENTER to clear Alarms resets all alarmed feeds and controls zeroing owed time amp volume and resets the delay on alarm for all sensors Exit the acknowledge display by pressing ENTER or any key Returns to the main menu Alarms display See Sidebar bottom of page Press ENTER then DOWN to view active alarms Alarms display until cleared so you ll Know there was a problem although it may have occurred when you were not the controller Press ENTER at Alarms and UP or DOWN to view active alarms B is a Temperature sensor which has exceeded or is exceeding it s high alarm 2 is a bleed which has exceed it s minutes ON today alarm Bleed solenoids are usually set to stay ON after alarming Pumps are usually set to turn OFF on alarm Thu 16 54 10 S N A076X0486 Alarms B 2 Clear Alarms v Alarms Cleared Alarms Reset All lt Alarms none View Alarms Alarms lt 4 B 2 lt 1 ana 4 Alarms lt H Activity Log Temperature B Alarmed High Bleed Valve 2 Limit Time Day Sidebar Feed limit and water meter alarms will immediately re trip unless you adjust the alarm l limits Sensor alarms will re trip after the user set
76. iew amp Adjust Setpoints Meter Feed Inhibitor 1 ON Owes 2 6min lt and lt Measure Volume 100 G And Turn ON ford 12 sec Editing or Exit 15 sec gt then And Turn ON ford 15 sec Bleed then Feed Inhibitor 1 OFF Setpoints Setpoints aH Test Prime Bleed then Feed 50 Editing or Exit 62 gt then Bleed then Feed 62 AEGIS User Manual Key UP or DOWN to the target Pump Valve or Solenoid then press ENTER The Product Pump frequency controlled by output 7 is ON and Owes 0 051 Gallons of feed This chemical is fed based on the volume measured by the tower make up meter Key ENTER once to Setpoints and again to view the volume setpoint Press ENTER to adjust Press DOWN to view the ppm setpoint Every 75 Gallons of make up 25 ppm of product is fed Press ENTER to adjust Key RIGHT to move the underline and then UP or DOWN to change the number Press ENTER to change the setpoint or EXIT to leave unchanged In this example we ve increased the feed rate by 40 by extending the feed rate from 25 to 35 ppm Sidebar Controllers with the metric system option set display volumes in Liters not Gallons 1 3 View amp Adjust Setpoints Adjust Setpoints __ppmFeed Product Pump 7 ON Owes 0 051G Setpoints lt Test Prime Measure Volume lt 75 G A S Then Feed e 25 pm o Editing or Exit 35 ppm gt then
77. in inventory or fed volume Correct the mL stroke accordingly Calibration Limits The controller limits the range of mL stroke calibration for the built in ProMinent pumps Aegis User 7 08 88 AEGIS User Manual 9 4 Setting the SPM Rating Pump SPM i To modify a frequency controlled pump s Treatment v i ene a f lt H and 4 Key UP to Pump Type and ENTER Rese Py and Key UP amp ENTER at Rated SPM to modify Rated sat lt H Key UP or DOWN to change the underlined digit Key RIGHT to move the underline Editing or Exit 240 gt Press ENTER to save the new Rated SPM A or EXIT to leave unchanged then In the example we ve increased the Rated SPM lt H Rated SPM from 100 to 240 strokes per minute 240 Sidebar Strokes per Minute Only Other type pumps can adjust the Rated SPM from 50 to 400 strokes per minute The built in ProMinent pumps have preset SPM ratings The controller uses the Rated SPM and mL stroke to verify that feed mL minute setpoints can be delivered Don t set the Rated SPM for the pump higher than its nameplate rating since the action of the pump on overspeed may not be defined and in the worst case the pump may stall Not an issue for the built in ProMinent pumps Aegis User 7 08 89 AEGIS User Manual 4 20mA Outputs display both the loop current and its corresponding the 0 100 This example display occurs on installing a new 4
78. ing or freezing 4 20mA 4 20mA represents GPM Steam Most operational problems occur during Inputs Demand Level remote pH amp commissioning ensuring the loop is temperature powered and converting the measured Amine Steam Demand current to the sensor units Inhibitor Treatment GPM Tank Sump Level Alarms Aegis User 7 08 40 AEGIS User Manual 4 2 Sensor Calibration Sensor Calibrate To calibrate a sensor key UP or DOWN Conductivity A to the target sensor and press ENTER 1134 us Key ENTER Calibrate Calibrate lt Alarms l ta Value Displays current value Key ENTER to modify 1134 us Key UP or DOWN to change the underlined digit Editing or Exit Key RIGHT to move the digit underline 1264 us gt n A Press ENTER to calibrate then or EXIT to leave unchanged Conductivity i In this example we increased the value measured by a conductivity sensor from 1134 uS to 1264 uS 1264 us Sidebar Single Point Calibration All sensors but some 4 20mA inputs can be single point calibrated Aquatrac recommends that you measure a sample from the sensor installation line and calibrate the sensor based on the grab sample It s the simplest most repeatable method Corrosion rate sensors are not calibrated Water treatment systems setpoint control so that the conductivity pH or ORP is controlled within a narrow range allowing simple single point
79. l To configure a bleed for meter control key UP or DOWN to the target bleed and press ENTER Key DOWN and ENTER Configure Key ENTER and DOWN to Control by and key ENTER Once you select a water meter for control The controller limits the operator to and when you key RIGHT Key UP or DOWN to select meters for control In this example we re controlling on tower make up O and bleed meter P When O measures its setpoint volume it turns ON the bleed until P measures it s setpoint volume The Bleed Valve Diagnostic for an O setpoint 100 and a P setpoint 25 waits for O to equal 23200 Gallons Then counts down P from 25 gallons 5 4 Cycle Controls Sequencing Meters Bleed Valve 2 OFF Setpoints lt and Configure Alarms Limits and g Control by l O Editing or Exit O P t then Control by lt OFP Control by 0 P e 232006 Diagnostic Wait for O Diagnostic Wait for P Control by 0 P PT 25G Sidebar Cycles of concentration are usually set by the conductivity control that operates the bleed solenoid If the make up conductivity amp chemistry is constant two water meters can be used for cycles of concentration control For every 100 Gallons of Make up the controller opens the bleed solenoid until it measures 25 Gallons The re
80. lable and the bleed is ON for less than 50 of the time that the tower is on line If the tower Bleeds for X Minutes the Inhibitor is fed for a user set of X minutes AFTER the bleed ends It s a better way to feed inhibitor for small cooling towers than Bleed amp Feed since less inhibitor is lost down the drain Inhibitor savings averaging more than 20 were measured on a mix of small towers in California simply by switching from Bleed amp Feed to Bleed then Feed Reliability Bleed then Feed amp Bleed amp Feed are only as reliable as the tower bleed solenoid and conductivity sensor Refer to 2 5 Limiting Feed amp Alarms for guidelines on preventing overfeed and recovering from bleed fault Aegis User 7 08 19 AEGIS User Manual 2 4 Sensor Controlled ON OFF Feeds To view or modify the sensor controlling a pump key UP or DOWN to the target Pump amp press ENTER In this example the Oxidant pump is powered by relay 3 and has no control sensor set Key ENTER amp DOWN to Configure Key ENTER to Control by amp then key ENTER Key UP or DOWN to scroll through the sensors connected to the controller Key RIGHT to add subtract divide or multiply more sensors to the control of Relay 3 In this example press ENTER to select sensor F or EXIT to leave No Control Control by now displays F an ORP sensor Refer to 1 3 View amp Adjust Setpoints to set the Oxidan
81. leave unchanged 7 37 pH gt then In this example we ve narrowed the control range from a 0 25pH 7 5 7 25 to 0 13pH 7 5 7 37 OFF Setpoint e 7 37 pH A Sidebar The controller knows the pump type connected to output 6 and its rated maximum SPM Pumps of varying SPM and ml stroke rating may be controlled at the same time The Measure Volume does not have to be the Gallons Contact of the make up meter The controller does the math so use setpoints that make sense to you In this example the green P6 indicating LED on the lower controller board flashes at the pump stroke rate As the feed rate approaches zero the time between flashes increases Any sensor temperature stream demand corrosion rate ORP may be used to frequency control any pump connected to outputs 6 to 9 delivering proportional control without using 4 20mA controlled pumps Aegis User 7 08 14 AEGIS User Manual 1 4 Priming Testing Pumps amp Solenoids Key UP or DOWN to the target Pump Valve or Solenoid then press ENTER The Oxidant pump controlled by relay 5 is OFF Key ENTER and DOWN to Test Prime Key ENTER again to view or adjust the Prime ON time Relays 1 to 5 default to 5 minutes Frequency controlled pumps 6 to 9 default to 100mL Press ENTER to adjust ON time or feed volume If you key ENTER twice you ll turn ON for the default time or volume Press ENTER to adjust Key RIGHT to
82. lenoid opens and lowers the sump level 3 The tower float then opens the make up adding low conductivity water to the sump 4 The sump conductivity falls below the OFF Setpoint and the bleed solenoid closes Aegis _User 7 08 70 AEGIS User Manual 6 4 Diagnostics Diagnostic continued Bleed controls usually don t use the biofeed event timers Cycle 28 Day In this example there are zero bleed events 0 Events Day 12 set for Day 12 Thursday of week 2 of a 4 week cycle Since midnight Tower Bleed has been ON oN o bleeding for 219 4 minutes 4 min Time Owed for Tower Bleed will count down Time Owed to zero if you had set a Prime Test period in minutes 0 0 min 4 lf a Special Control is set Special Control displays the current state of the control none eee State We re back at the start of the Diagnostic scroll Operational Sidebar ON Today If the tower has been operating for 10 hours today then its bleeding for about 36 of the time typical for a tower under load If the tower has been operating for 4 hours today then its bleeding for about 90 of the time indicating that the bleed may be undersized or partially blocked or bleed setpoints may be set incorrectly or that make up conductivity has changed An increase in tower thermal load could cause the conductivity to rise beyond the Turn ON setpoint because the bleed can t keep up Special Control Varyi
83. lter Set the ON Time alarm on Pressure V to 20 minutes because if V hasn t turned OFF in 20 minutes then backwashing failed and filter pressure is still high Owed Time or Volume Contact set controls work by adding time or volume to the controlled output Reset alarms zeroes time Relays 1 to 6 or volume Pumps 6 to 9 owed Time or volume owed adds to any existing owed so every time a controlling contact set turns OFF and then ON for more than TurnON Setpoint the owed time or volume increases Contact set controls work in parallel with Prime Test am Biofeed event time or volume owed Aegis User 7 08 84 AEGIS User Manual 9 0 Frequency Controlled Pumps 9 1 Selecting a Pump Controller outputs 6 to 9 are used for Pump Type frequency controlled pumps N d pump Treatment 9 ON Owes 2 431L To view or modify a Pump Type N key UP or DOWN to the target pump and press ENTER then UP and Pump Type lt Key ENTER Pump Type Plagnostic Displays one of six default pump types or Other In this example Treatment 9 controls a Pump Type al ProMinent 1001 type pump ProMinent 1001 4 Key ENTER to modify Displays the current mL stroke volume in mL 5 In this example it s the default for a mL stroke lt ProMinent 1001 type pump 0 10 Key ENTER to modify Displays the current Rated SPM in strokes per minute a S In this example it s fixe
84. m contacts to CLOSED Sequences solenoids and pumps May be used to start a feed flush or backwash sequence Pressure May alarm on both closed High May be used to verify that the previous Switch Pressure and open No pressure sequence occurs if initiated by other contact sets controllers Monitor de aerator pressure Fail to Sample switch verifies blowdown sample at measuring Low cost thermal switches may be Thermal conductivity sensor purchased with a wide range of trip Switch temperatures Verifies that boiler bottom blowdown has been manually opened and closed Dry Contact Sets Contact sets connected to the controller must be dry without AC or DC voltage on either of the contact set wires Contact sets cannot be shared between the controller and any other controller type or automation system Aegis User 7 08 79 AEGIS User Manual 8 2 Switching Meters amp Contact Sets Configure To switch a meter volume input to a WaterMeter_R R contact set input key UP or DOWN 0G to the target contact set and press ENTER a Configure lt Key DOWN and ENTER Configure i Diagnostic g lt and Digital Type Key DOWN to Digital type and ENTER to modify Contact Meter Digital Type Contact Meter te Key DOWN to Contact Set and ENTER to select When you key ENTER the controller Digital Type returns you to the main menu Contact Set e In this example WaterMeter_R is now a gt l
85. m a ProMinent 1001 to a ProMinent 0704 Built in Pump types 9 1 Selecting a Pump New Pump Treatment 9 ON Owes 2 431L lt ana Pump Type lt H Diagnostic Pump Type lt H ProMinent 1001 and Pump Type other fe W r Pump Type ProMinent 0704 Pump Type lt H ProMinent 0704 Pump Type ml stroke Liters hr Gallons hr 1601 0 13 1 404 0 371 1602 0 24 2 592 0 685 1001 0 10 1 080 0 285 1002 0 24 2 592 0 685 0704 0 42 4 536 1 198 0705 0 50 5 400 1 427 Your pump type may differ These pumps are typical for small to medium cooling towers or boilers Aegis User 7 08 86 AEGIS User Manual 9 2 Copying a Pump Volume Copy Volume To copy a frequency controlled pump volume Dispersant 6 to a volume meter or inventory sensor input Feed 02 50 key UP or DOWN to the target pump and press ENTER ane Configure lt Key DOWN and ENTER Configure Atanaecl snes A lt ana Copy Volume to none Key UP or DOWN to the copy target input and then ENTER to select l and or Water meter inputs O to Z sum the pump volume Copy Volume to with volume measured by the meter FeedMeter_R e Sensor inputs H to N subtract the pump volume r Ww N from the sensor inventory or tank volume Copy Volume to Inventory M Key UP to Volume to and key ENTER to modify In this example we ve selected sensor input Inventory_
86. made up towers that have had no blowdown or chemicals that have not fed Meter Alarms High Alarm The High Alarm for water meters trips when the meter exceeds the High Alarm volume Set High Alarms higher than the volume expected highest thermal load to prevent nuisance alarms OR close to actual usage to flag you on increased load Set High Alarms on feed verify meters to flag you on increased usage Note clearing a water meter High Alarm without adjusting the High Alarm level will immediately trip another alarm on the meter Aegis User 7 08 65 AEGIS User Manual 6 0 Cooling Tower Bleed 6 1 Make it Bleed 101 Bleed Control Objective Bleed setpoints for small and medium size cooling towers should be no more than 10uS apart so that short bleeds are followed by short feeds A 10uS control window usually results in the minimum variation in cycles of concentration and inhibitor ppm Since you calculate expected inhibitor and water usage based on cycles of concentration minimum variation in cycles increases calculation accuracy Bleed Sequence 2 TUMON Frnt aaa TUNOFRE perste ek a ao 3 7 dp w E A 2 a 2 g S 6 2 F ra Q N O o e 5 o o 5 2 o 2 o 5 m L a 3 Time 8 E Notice that the actual minimum and maximum conductivity 2 amp 4 are set by the make up float and not by the controller ON amp OFF setpoints 1 amp 3 Observe a bleed cycle The amount of conductivity overshoot and unde
87. me Modulate amp ENTER once selected to view amp adjust the modulation timing Key ENTER to modify the default 120 second Period Pump ON time will vary between 0 and 120 seconds in every 120 second period as the controlling varies between setpoints Sidebar 2 5 Proportional Feed Special Control Time Modulate Chemical 456 a OFF Setpoints lt ana 4 Configure lt Alarms Limits lt 1 and Special Controle None lt 1 ana 4 Special Control Timed Modulate 120 sec Period lt e Frequency controlled pumps connected to controller outputs 6 to 9 are proportionally controlled as the controlling sensor varies the pump frequency Often there is a need to proportionally control an ON OFF pump connected to one of the controller power relays 1 to 5 Examples The pump may be oversized for the application or turning down the pump stroke or frequency may cause loss of prime or feed line blocking The Time Modulate Special Control Turns OFF below the TurnOFF setpoint and is always ON above the Turn ON setpoint Between setpoints linearly increases the ON time from zero the TurnOFF setpoint to always ON at the Turn ON setpoint Example Period 120 seconds pH Turn ON 7 pH TurnOFF 8 current pH 7 4 ON time 48 seconds in every 120 seconds OFF time 72 seconds in every 120 seconds Time Modulate Special Co
88. mp press ENTER Pa Key ENTER amp DOWN to Configure amp key ENTER Configure lt Alarms Limits The Inhibitor pump is Interlocked by the flowswitch a connected to controller input S When flowswitch S is ON the Inhibitor can pump Key ENTER to adjust L Interlocked lt 5 Editing or Exit v gt UP or DOWN to change the Interlock Key RIGHT to use more than one flowswitch Press ENTER to change the Interlock or EXIT to leave unchanged then Interlocked V In this example we ve changed the flowswitch from controller contact set input S to V Sidebar Interlocks are contact sets that must be closed for a Pump to feed a Solenoid to open or a boiler Blowdown Valve to operate Cooling towers use a flowswitch in the sensor piping to detect that the cooling tower is operating amp its OK to feed chemicals amp bleed the tower Boilers use dry contact sets from the boiler firing control or site automation to tell the controller that the boiler or boilers are on line amp it s OK to blowdown One or more closed contact sets may be required to Interlock a pump Examples If any of three boilers is on line feed sulfite Each boiler has it s own on line contact set connected to controller inputs T U amp V The sulfite pump Interlocked T U V If there is flow in the feed line Input S and the tank le
89. n the example we ve decreased the mL stroke from 0 02 mL to 0 16 mL Sidebar Product Concentration Error Sources 9 3 Adjusting mL stroke Pump ml stroke 7 ON Owes 0 216L poar 123 lt ana Pump Type Diagnostic 7 lt ana mL stroke 0 20 lt t 0 16 Editing or Exit gt i 4 4 then gt mL stroke 0 16 t PT ppm level errors can be caused by Product formulation inaccuracy loss of active product due to extended storage settling separation or temperature reaction of the product with other fed chemicals errors in the ppm test method or its reagent inaccuracy or incorrect scaling of the make up or feedwater meter and errors in the mL stroke setting of the feed pump Calibrating Stroke Volume When your chemical ppm tests don t match the feed ppm setpoints or the calculated inventory doesn t match the actual tank volume then consider calibrating the pump ml stroke If you find you re correcting the mL stroke value frequently then its very likely that the error source is not the mL stroke setting since the feed head hasn t changed Calculated Adjust If you test 5 higher than the ppm feed setpoint then adjust the mL stroke x 1 05 This method is minimum effort but it may mask other contributors to concentration error Pump from a Graduated Cylinder Pump 100 to 250mL from a graduated cylinder and note the change
90. n tracking sensors 164 0 mv Input card ID 74 6 mV Measured Level is the sensor voltage The controller uses the card ID to auto configure on new driver cards Some cards also use this level to determine range Sidebar Gain amp Default Gain When you calibrate a conductivity sensor the controller adjusts the GAIN to make your measured value match the displayed value Offset amp Default Offset When you calibrate a pH ORP temperature or corrosion rate sensor the controller adjusts the OFFSET to make your measured value match the displayed value When you two point calibrate a 4 20mA input the controller adjusts both OFFSET and GAIN Inventory ppm and Manual Sensors These sensor types use only the OFFSET to set the displayed value The controller ignores GAIN for these sensor types For example when you fill a tank and Calibrate an Inventory sensor to display 48 5 Gallons Offset Adjust will display 48 5 Measured Level pH sensors have a well defined mV to pH relationship Example pH7 OmV pH10 176 mV and pH4 176 mV Displayed sensor value GAIN x Measured Level OFFSET Using this simple equation you can directly modify the OFFSET amp GAIN to get a desired display This is seldom done but it s convenient for some unusual sensor types Aegis User 7 08 54 AEGIS User Manual To view Corrosion Rate sensor Diagnostics key UP or DOWN to the target sensor and press ENTER
91. ng ENTER to select an option An ENTER symbol on the display signals that amp to execute EDITing there are sub menus available EXIT to escape option info display or EDITing MAIN MENU The sensors and controls in the main menu vary with your controller part number and sensors and pumps that you enable or disable The main menu groups sensors with the pumps or solenoids that they control so you may find the menu order changing when you change an inhibitor pump for Bleed then Feed control to Water Meter ppm control Where are Sensors Solenoids Valves amp Pumps Connected You may modify the names of sensors pumps and solenoids but the controller tags each input with a letter A to Z and each output with a number 1 to 9 representing where each is wired Inputs A B and G and O to V have fixed wiring terminals on the upper controller board A is always a conductivity sensor B a temperature sensor and G a 4 20mA input Inputs O to V may be individually selected to be either a water meter volume input or a contact set flowswitch input Terminals for outputs 1 to 5 are located on the lower board They are ON OFF power relays that switch 120 or 230VAC to pumps valves and solenoids Terminals for outputs 6 to 9 are also located on the lower circuit board They are electronic switches used to frequency control pumps Inputs C D and E F are used for plug in sensor cards which add optional conductivity pH ORP corrosion rate 4 20mA
92. ng Cycles Displays Offline if not controlled by a ratio of conductivities Correct Control by Displays Low Range Med Range or High Range depending on the make up conductivity and controls the bleed to maintain the cycles of concentration setpoint for the displayed range Displays Max Conduct if sump conductivity exceeds maximum setpoint The controller sets the TurnOFF setpoint 1 below the Max Conduct setpoint For example if Max Conduct 3000 uS TurnOFF would be 2970 uS Aegis User 7 08 71 AEGIS User Manual 7 0 Boiler Blowdown 7 1 Boiler Blowdown 101 Continuous Boiler Blowdown Is common on larger high pressure boilers and routes a continuous low flow stream through a sample cooler upstream of the thermally compensated conductivity sensor The blowdown valve is installed on a parallel line to the flash tank Blowdown control is configured like a cooling tower bleed and is therefore not detailed in this section of the manual Sampling Blowdown Control Is preferred for smaller and medium sized boilers because it does not require a continuous sample stream or a sample cooler The 2 wire conductivity sensor is thermally compensated by the Sample Measure sequence with blowdown flow trimmed by the throttling valve downstream of the conductivity sensor Sampling Blowdown Control 2 teSample Switch sa Surface blowdown piping Isolation Valve Conductivity a Sensor Bypass z l
93. nge the OFF on Alarm from No to Yes or EXIT to leave unchanged To view or modify the Alarms Midnight reset used ona pump or solenoid key UP or DOWN to the target Pump amp press ENTER Key ENTER amp DOWN to Alarms Limits amp key ENTER Key ENTER amp DOWN or UP to Midnight reset Key ENTER DOWN ENTER to change the Midnight reset from No to Yes or EXIT to leave unchanged Sidebar 2 7 Limiting Feed amp Alarms Alarms OFF On Alarm Inhibitor 231 8 ON Owes 56 45mL ean Alarms Limits Pump Type 4 lt ana OFF on alarm No E ana G Te OFF on Alarm Al Yes Alarms Midnight Inhibitor 231 lt 8 ON Owes 56 45mL 3 and Alarms Limits lt lt Pump Type a and Midnight reset NO 3 ana F then lt 2 Midnight reset Yes Chemical feeds are usually all set to OFF on alarm since an overfeed indicates an operating problem which requires correction and continuing to feed may case damage or incur product cost Bleeds amp Blowdowns are not set to OFF on Alarm Inhibitor feeds are frequently set to Midnight reset to maintain daily cost usage targets Acid amp Oxidant feeds are never set to Midnight reset Aegis User 7 08 28 AEGIS User Manual 2 8 No Feed on No Flow Configure Interlocks Inhibitor 1 ON Owes 46sec lt and To view or modify the Interlocks used on a pump or solenoid key UP or DOWN to the target Pump a
94. ngor Exit Press ENTER to Login 1 4 If you have not keyed any of the current valid passwords you ll view an error message then i Sidebar Default Passwords The first time you turn ON Keypad Password the 8 default passwords are Operatori 1 Operator2 2 Operator3 3 Operator4 4 Configure5 5 Configure6 6 Configure7 7 Administrator AAAA There are 3 password levels Operator Configure and Administrator The 8 default User IDs are used in the controller s keypress log Modify Password Once you Login you can modify you password Refer to the following page Login Displays Prompts you for the required password level Login Admin Config or Operate depending on what key press activity required a password Aegis User 7 08 94 AEGIS User Manual 11 1 Passwords After you ve turned ON passwords and Modify Password logged in as one of the eight users n n 3 Thu 16 54 10 S N A076X0486 To modify your Keypad Password press ENTER and UP to Passwords E A at the power up or day time display oo amp mer E Key ENTER Passwords Passwords Diagnostic Y To Logout as the current user key ENTER at Logout o amp The controller automatically logs you out Logout v 30 minutes after your last key press Operator1 4 Note that this display shows Operator1 your user ID Y Key ENTER at Reset Pswrds to key in the reset code which returns Reset Pswrds all passwords to de
95. ntrol works for both rising amp falling setpoints Aegis User 7 08 24 AEGIS User Manual To view or modify the Special Control used on a pump or solenoid key UP or DOWN to the target Pump amp press ENTER In this example the Inhibitor pump is powered by relay 1 and is currently OFF Key ENTER amp DOWN to Configure Then ENTER amp UP to Special Control Key ENTER amp DOWN to change Special Control from None to Percent Time Frequency controlled pumps will display a Base Feed option Key ENTER once selected to view amp adjust the ON Time from the default 50 50 turns ON the pump for 150 seconds in every 300 seconds 5 minutes Key RIGHT to move the underline and then UP or DOWN to change the number Press ENTER to change the prime time or EXIT to leave unchanged In this example we ve decreased the base feed rate from 50 to 34 The pump will be ON for 102 seconds in every 300 seconds Sidebar Base Feeds are used to continuously feed a chemical In some cases as a temporary measure while a sensor is replaced or a water meter repaired or to pre treat a system on start up Inhibitor OFF No control 2 6 Base Feed Percent Time 1 lt ana Configure lt H Alarms Limits 4 lt ana Special Controle None Special Control None Special Control Percent Time lt ON Time lt 50 r Editing dor Exit 34 gt then ON Time lt 34 A B
96. odify Sidebar Calculate ppm If the controller knows the volume of chemical fed the make up volume and cycles of concentration then the ppm of the fed chemical can be calculated The 1mL pulse Tacmina positive displacement feed meters installed on the pump outlet or the inlet of fractional HP boiler feed pumps are an accurate way to measure volume fed In this example the feed meter is connected to controller input Q Phantom Inputs H to N a hea 4 5 Sensor Compensation Calculate ppm Inhibitor ppm Kl 24 365 ppm and Configure Diagnostic lt 4 and 4 Calculate ppm Chemical Volume FeedMeter Q 4 Make up Volume lt lt Tower Makeup O 7 7 cycles method Fixed Cycles t 2 500 Cycles In this example we ve enabled phantom input K for use as a ppm sensor H to N may also be used as Inventory or Manual Input sensors Aegis User 7 08 52 AEGIS User Manual 4 6 Sensor Diagnostics Diagnostic To view sensor Diagnostics Conductivity A key UP or DOWN to the target sensor 1134 us and press ENTER k oji 4 Key UP and ENTER Diagnostic saa c Calibrate Sensor Type Conductivity in this example Sensor Type Also displays pH ORP Temperature Boiler Cond condici ann 4 Condensate unused 4 20mA Input or Corrosion Wii y Current State may also display Alarmed
97. oiler chemicals are frequently base fed as long as the boiler s on line contact set is closed Concentration is modified by changing the frequency controlled pump 6 to 9 feed rate or relay 1 to 5 ON Time Aegis _User 7 08 25 AEGIS User Manual To view or modify the Alarms Limits used on a pump or solenoid key UP or DOWN to the target Pump amp press ENTER In this example the Inhibitor pump is powered by relay 1 and is currently ON amp owes 46 seconds of feed Key ENTER amp DOWN to Alarms Limits amp key ENTER The Minutes per Actuation limit is the elapsed ON time for each ON OFF cycle Key ENTER to adjust This alarm does not reset at midnight After this pump has been ON for 25 hours it will alarm The Minutes per Day limit is the total ON time In any one day Key ENTER to adjust The total time resets at midnight If this pump alarms it will turn OFF Bleed Solenoids are usually set NOT to turn OFF on alarm Acid Pumps ALWAYS are set to OFF on alarm Set to Yes to automatically reset the alarm at midnight Useful to limit the maximum amount of inhibitor fed day Always No for Acid Pumps locate amp correct the alarm cause Ends all owed time or volume Ends biocide feed events Will not restart after a Minutes Day alarm unless limit extended If this pump or solenoid has ever previously alarmed displays type of alarm and time amp date it occurred Used to flag alarms that have been Reset
98. oller using a crossover cable In this pages example the controller IP Address is 192 168 24 86 To be on the same network your notebook needs an IP Address 192 168 24 xxx where xxx is any number from 1 to 255 excluding 86 Aegis User 7 08 103 AEGIS User Manual To view the controller s Diagnostic press ENTER at the power up or day time display Key ENTER Diagnostic Displays the state of the Relay 1 to Relay 5 AC power fuse Displays OPEN if AC fuse has failed The Internal 2 5V level corrects analog voltages measured by the controller Displays from 2 4500 to 2 5500 The 15VDC Power level is the unregulated voltage the controllers DC Power Output terminals Displays from 15 to 23 Volts depending on AC line voltage and load on the DC Power Output supply Displays the time and date of the last controller reset or the time and date of the most recent Load Factory was executed An Admin Password Default has not been modified from AAAA If modified displays Changed An Watchdog Resets should always display 0 An increasing number of Resets indicates corrupted firmware or controller electrical fault or interference The controller Firmware Version indicates the date of issue of the software operating the controller Sidebar 11 8 System Diagnostic Thu 16 54 10 S N AO76X0486 Diagnostic lt H Communicate y Relay Fuse OK 4 Internal 2 5V 2 4743 A 15VDC Power 16 97 4
99. on Pi Press ENTER to modify Tower pH Sensor units may be up to 3 characters amp numbers In most cases you ll use default units Display units 4 20mA Inputs may use ppm GPM LBH as units pH Press ENTER to modify Sensor values may be displayed with from zero to three digits of resolution after the decimal Decimal digits Conductivity is usually 0 ORP 1 2 pH amp corrosion rate typically 2 and ppm 3 digits Press ENTER to modify Available Compensation varies with sensor type Compensation pH may have Temperature compensation none Press ENTER to select amp modify A sensor used for control or to compensate Disable Input another sensor cannot be disabled yes Disable unused sensors to unclutter and speed display scrolling Although you can override single point calibration Gain Multiply lt by directly modifying the sensor 0 017 Gain amp Offset this is seldom done Y These values are more useful in flagging W failing and fouling sensors offset Adjust lt lt 0 21 Sidebar The following pages detail modifying sensor configuration Aegis _User 7 08 45 AEGIS User Manual To modify sensor Description key UP or DOWN to the target sensor and press ENTER Key DOWN and ENTER Configure Key ENTER to view Description Sensor Description may be up to 14 characters amp numbers Press ENTER to modify Key UP or DOWN to change the underlined letter or digit Key RIGHT to mov
100. ons helpful Aegis User 7 08 6 AEGIS User Manual FREQUENCY CONTROLLED PUMPS AEMP F Wake mectonec Aegis controllers combine the 5 ON OFF controls with 4 frequency controls Depending on your feed application frequency controlled pumps may deliver more accurate feed easier to understand setpoints and fed volume tracking without increasing pump cost Frequency controlled pumps amp the innovative way the Aegis uses them may new to you The Aegis lets you mix amp match ON OFF amp frequency controls to fit your site Typical Applications ON OFF Controller switches AC power ON OFF to pump or solenoid Frequency Controller to pump cable varies stroke rate Typical Inhibitor Feed Water meter control turns ON the pump for 10 seconds every 100 gallons of make up User sets target inhibitor ppm amp control meters inhibitor based on make up volume Blowdown or Bleed Controller turns ON OFF solenoid or motorized valve Not used Typical Biocide Feed Turn on pump for 45 minutes 7 00 every Tuesday Turn on pump for 0 535 Gallons 7 00 every Tuesday Acid Feed Turn ON pump when pH greater than 7 65 amp OFF when pH less than 7 55 Increase the acid feed rate as the pH increases Proportional Feed Requires a 4 20mA controlled pump Any sensor can control the feed rate from a 1000 1 turn down to maximum feed rate Tank Level Alarms Ppm Calculations Requires f
101. osing on measured conductivity Displays the state of the Fail to Sample thermal switch Alarms if OFF at the end of Sample Displays the state of the blowdown valve OFF and counts down the time remaining in the Wait period between Samples In this example we have 38 4 minutes until the next Sample Displays the state of the blowdown valve ON and counts down the seconds remaining in the Sample period Displays the state of the blowdown valve OFF and counts down the seconds remaining in the Measure period Displays the state of the blowdown valve ON and counts down the seconds remaining in the Blowdown period OR Displays the state of the blowdown valve OFF and counts down the minutes remaining in the Wair period Sidebar Conductivity Value Display The value of the blowdown controlling sensor shown on the main menu scroll is the value at the end of Measure It only changes at the end of each Measure period Blowdown B2 5 ON 26 sec lt ana Diagnostic lt H Setpoints lt ana Sensor Watch 4836 us Fail to Sample ON Sensor V Capt Sample OFF wait 38 4m THEN Capt Sample ON Sample 14s THEN Capt Sample OFF Measure 26s ABOVE SETPOINT Capt Sample ON Blowdown 109s BELOW SETPOINT Capt Sample OFF wait 120 7m Aegis User 7 08 77 AEGIS User Manual 7 4 Sensor Watch amp Blowdown Diagnostics Lets re visit the graphics shown in 7 1 Boiler blowdown 101 using the
102. p to 4 Meters can be summed or differenced to control a pump without using Copy Volume to Copy Volume to adds flexibility to configuring volume feed controls Operation Only the incremental volume measured is copied not the meter daily total Copying starts when you set Copy Volume to Constraint The target meter of a Copy Volume to cannot be copied to prevent a run away circular copy In this example if you copied meter O to Meter Q and then copied Q to O you d quickly get an infinite volume The controller blocks this type of circular reference Aegis User 7 08 63 AEGIS User Manual 5 6 Meter Diagnostics Diagnostic To view Diagnostic for a meter key Tower Make up 0 UP or DOWN to the target meter 9860 gal and press ENTER k and 4 Key UP and ENTER Diagnostic Diagnostic v Alarms Both Turbine amp Contact Head meter display as Digital Type Digital Type Volume Meter Volume Meter Displays Alarmed if Volume Today greater than ane pon gt High Alarm or less than Low Alarm Operationa Volume Today is the measured volume from Volume today midnight of the current day 9860 gal Compensation displays Feed Verify Compensation if its set on the displayed meter None 4 Vol this year is the measured volume in Vol this year the current calendar year 1642900 gal continued Sidebar If we are viewing the Volume Today at noon and
103. put amp Output cards available Single amp Dual Drivers Alarms on open current loop User configurable as water meters or contact sets Contact head meters software debounced Turbine Paddle wheel rating Seametrics max pulse rate Relays rated 10A 120VAC Detection and Alarm on relay AC fusing 500 ohms in series with non polarized bounce free silicon contact sets Notes Nominal dimensions excluding entry fittings and external power and sensor cabling Enclosure door hinged left Plug boxes not available for controllers shipped outside of North America Mounted bottom left of enclosure door AEGIS User Manual Communications User Interface Keypad LCD USB 10 BaseT TCP IP Ethernet LAN Optional Modem Optional Electrical AC Input 5 Relay Fusing 120VAC Power Cord 120VAC Pump Solenoid Plug Sockets Surge Spike Suppression Control Fusing AC Terminals Sensor Digital Input Terminals DC Loop Turbine Meter Power Aegis User 7 08 Rating Detail 5 Key Tactile feedback UP DOWN ENTER EXIT RIGHT 2 Line x 16 Character Backlit Data log download View configuration upload HTML AJAX micro Web Server for Mozillla s Firefox and IE7 Full command control reconfigure via browser Network parameters and HTML port user set Static IP 56K V 90 PPP access provides remote browsing via Mozillla s Firefox and IE7 Rating Detail 120 or 230 VAC
104. r DOWN to the target valve or solenoid and press ENTER Key UP and ENTER Diagnostic Current State will display Interlocked if flowswitch conductivity sensor OFF or Special Control if Varying Cycles selected Control by displays the sensor or sensors Controlling Tower Bleed In this example it s the conductivity sensor input A which has a current value of 1216 uS Control by A C would indicate that Tower Bleed is controlled by the ratio of sensors A and C When sensor A exceeds Turn ON setpoint 1200 uS in this example Tower Bleed turns ON When sensor A exceeds OFF setpoint 1190 uS in this example Tower Bleed turns OFF Bleed controls are usually Rising Setpoint since the conductivity rises as the tower operates 6 4 Diagnostics Diagnostic Tower Bleed ON 16 2min and 4 Diagnostic lt H Setpoints a Current State Operational Control by A 1216 us t Turn ON setpoint 1200 us i OFF Setpoint 1190 us 7 Control Type f Rising Setpoint continued Sidebar Current State Displays Feed Limited on alarm and Blocked if the bleed relay has one or more blocking relays set Typically you would not Block the bleed Control Type Rising Setpoint 1 The tower evaporates water increasing the sump conductivity until it exceeds the Turn ON setpoint 2 The bleed so
105. racks TDS the variable we want to control pH Temperature Compensation If your site switches to free cooling and water temperature spans 40 60F in a day then temperature compensating pH is worth the slight decrease in overall reliability Otherwise you won t see any measurable benefit in temperature compensating pH Aegis User 7 08 50 AEGIS User Manual 4 5 Sensor Compensation Corrosion Rate To view of modify Corrosion rate sensors CU Corrosion C key UP or DOWN to the target sensor 0 21 mpy and press ENTER P and Configure lt H Diagnostic 4 lt 4 and 4 Compensation P Corrosion 4 Key DOWN and ENTER Configure Key DOWN to view Compensation Displays the Corrosion Compensation type Press ENTER to view settings or modify Compensation Corrosion fe The Alloy Number for copper is 2 0 The default Alloy Number is carbon steel 1 0 Alloy Number lt Press ENTER to modify 2 000 The compensating Conductivity Sensor is Conductivity A Reproducible results in conductivity controlled towers do not require a conductivity sensor sega el 4 Select a sensor if your process conductivity varies COnductivity A Press ENTER to modify Sidebar Corrosion Rate Measurements Weight loss coupons are commonly used to measure average corrosion rate over the coupon immersion period The AEGIS corrosion rate measurement uses LPR Linear Polarization R
106. results may be used to alarm adjust feed rates The result of a drop test is entered logged and displayed on control input J This controller measures the Tower Bleed volume on meter input P The volume from midnight may be being used for cycle control and or evaporation credits A second make up source may be measured by turning on an unused input Q in this example It may then be summed with the potable make up to feed inhibitor Input S is the default flowswitch input It s been ON today for 10 89 hours amp since it now 16 54 this tower s re circulation pumps turned ON 6 00AM You can edit the name of any input or output This biocide can be fed on a 1 7 or 28 days cycle You can set chemicals to feed before or after other chemicals to prevent feed line reactions or to sequence product delivery You can disable unused sensors pumps or relays to un clutter the display and turn them back ON as site needs change Plug in a new sensor card and the controller auto reconfigures Key EXIT anytime on the Main Menu amp you ll get back to this power ON display Aegis User 7 08 9 1 1 Main Menu cont Copper Corr E 0 26 mpy Drop Test id 12 drp Bleed Meter P 8210 gal Grey Water YQ 3825 gal Flowswitch as ON 10 89 Hr 456 Biocide lt 3 ON 10 2 min Dispersant 7 OFF No Event PowerRelay_4 4 OFF No control Thu 16 54 10 S N AO76xX0486 AEGIS User Manual 1 2 C
107. rshoot on setpoints shows you the effect of the float and possibly where the make up enters the sump The effect of the bleed cycles on larger cooling towers is more variable Make up may be continuous and not ON OFF The large water volume is slow to cycle up and slow to change conductivity when the bleed valve opens Power generation towers frequently use modulating valves for blowdown so that both make up and bleed may be continuous New Construction It s not uncommon to undersize the bleed line so that the conductivity continues to increase even though the bleed is always ON Watch for this deficiency during the first hot period amp set your bleed and conductivity alarms tight to flag on possible fault Aegis _User 7 08 66 AEGIS User Manual To view or adjust the bleed Alarms key UP or DOWN to the target valve or solenoid and press ENTER Key DOWN and ENTER Alarms Actuation minutes is the time between Turn ON amp TurnOFF setpoints Increases with the difference in uS between setpoints Typically set 20 to 50 greater than longest bleed cycle time Key ENTER to modify The Minutes per day alarm is useful for picking up increasing in thermal load In this example the tower runs 16 hours day amp when loaded bleed 30 of the time Key ENTER to modify NO on OFF on Alarm logs the alarm but keeps the bleed ON Typically never set to YES for bleed valves Key ENTER to modify We skip Midnight Reset seldom
108. s Refer to 5 3 Feed Verification amp 5 4 Cycle Controls Oxidizing chemicals like bleach are almost never feed using a water meter since the demand is not proportional to the make up volume pH correction feeding acid based on make up volume only works if make up water chemistry is constant Even then a monitoring pH sensor is required Aegis User 7 08 18 AEGIS User Manual 2 3 Bleed Based Feed Bleed then Feed To view or modify the pump feed method key a UP or DOWN to the target Pump amp press ENTER Inhibitor 1 OFF No Control In this example the Inhibitor pump is powered by relay 1 and has no feed method set ang configure lt Key ENTER amp DOWN to Configure Alarms Limits 4 and Special aie R Non Key UP or DOWN to view Special Controls that can be si used without a controller sensor or water meter and Press ENTER to select Bleed thenFeed or EXIT to leave None Key ENTER UP to Special Control amp then key ENTER Special Control Bleed thenFeed lt J Special Controls that now display Bleed thenFeed ai ia It s set at 50 Refer to 1 3 View amp Adjust Setpoints Special Contro Bleed thenFeed Now when we view the Inhibitor pump it displays OFF Setpoints indicating that a control is active Inhibitor 1 OFF Setpoints Sidebar Bleed then Feed is used to feed cooling tower inhibitor when a make up meter is not avai
109. sese e45544eesereaseseseeserecse TURE ee tserneeeetreey saree ter heererp renee Conductivity Measure Time Sensor Watch blowing down EE Turn ON 4 4 TurnOFF EAE m n ee a Blowdown Sahat it ete T Measure L I Conductivity Time Blowdown 1 to 2 amp 3 to 4 If the conductivity is above the Turn On setpoint the controller does Blowdown amp Measure period 2 to 3 until the conductivity at the end of Measure is below the TurnOFF setpoint Then another Wait period starts Aegis User 7 08 73 AEGIS User Manual 7 2 Adjusting Boiler Blowdown Timing To view or adjust the Captured Sample blowdown control timing key UP or DOWN to the target blowdown valve and press ENTER Key DOWN and ENTER Configure Key UP to Special Control amp verify that it displays Capture Sample Key ENTER to view or adjust timing Sampling Time is the time to clear the surface blowdown line between the boiler and the sensor Sampling time increase with both longer piping runs and reduced throttling valve flow Key ENTER to adjust Measure Time is the sensor cooling time amp include the time required for the valve to close 60 to 120 seconds works for most blowdowns Key ENTER to adjust Blowdown Time is the time the valve is open if the conductivity is higher than the Turn ON setpoint the end of Measure Time 120 to 600 seconds works for most blowdowns Key ENTER to
110. sult is 4 cycles of concentration Is this example the conductivity sensor is used only to monitor the tower and not to operate the bleed solenoid Volume setpoints can be adjusted for any Cycles target Don t worry about the math and each meter s volume contact rating or K factor The controller takes care of these details Aegis User 7 08 62 AEGIS User Manual 5 5 Copying Meters Copy Volume to To copy a meter volume to another meter Tower Make up 0 key UP or DOWN to the meter 98600 gal and press ENTER and Key DOWN and ENTER Configure Configure lt Diagnostic lt ana Key ENTER and DOWN to Copy Volume to ae Volume to 7 and key ENTER ENTER none lt and lt Copy Volume to WaterMeter_Q e or 4 ana lt Copy Volume to lt watermeter Q Key UP or DOWN to select a target meter In this example we re copying Tower Make up O to WaterMeter_Q Sidebar The volume measured by one water meter can be copied to another water There are several uses for copying meters 1 More than one meter can be summed for each meter in an O P type Cycle Control 2 Several tower s make ups or boilers feedwater volumes may be summed to a single meter for logging or alarming purposes If you enabled a phantom input W to Z you don t need to give up a physical controller meter input to sum volumes Meter Control Equations U
111. t Aegis User 7 08 105 AEGIS User Manual Analog Digital I O Analog Inputs A G 4 20 mA Outputs Uses C D and or E F sockets Digital Inputs O V U Z Relay Outputs 1 5 Frequency Outputs 6 9 Mechanical Enclosure Rating Dimensions Weight 120VAC 4 Plug Box optional ON OFF Switch optional Aegis User 7 08 Rating Detail 7 Analog Sensors of which 3 are fixed A Conductivity B Temperature amp G 4 20mA Input Socketed for two single or dual sensor drivers or 4 20mA output cards Inputs C D and E F 7 Phantom analog inputs may be used for ppm inventory manual data logging 0 to 4 DC isolated loop powered Nominal 0 1 resolution Auto polarity correction field wiring 8 Meter amp Contact Set Dry Contacts 250mS response Water Meters 400 Hz max 0 5mA 5VDC measurement current 4 Phantom inputs may be used for volume tracking mirroring 5 1SPST 4 SPDT Fused 6 3A 120VAC or 3 15A 230VAC 4 Isolated Dry Contact SPST Outputs 400 SPM maximum Rating Non metallic NEMA4X IP66 7 5 W x 11 3 H x 5 5 D 190mmW x 287mmH x 140mmD 15 lb 7 Kg nominal Mounting hardware included Rated for outdoor use Includes 36 of flexible non metallic conduit IP67 rated 10A 125 250VAC 106 12 3 Specifications Notes Controller auto configures on Driver card installation and removal pH ORP Conductivity pH Temperature Corrosion Rate 4 20mA In
112. t Vale Boiler 250 psi Bleed Solenoid maximum or Valve om Isolation Throttling Flash Valve Needle Tank Valve Sampling blowdown control requires that there are no piping restrictions upstream of the conductivity sensor no partially closed valves amp no orifice unions Flashing upstream of the sensor causes low amp varying conductivity measurements and results in poor or no blowdown control If you don t get a boiler water sample because a valve has been closed upstream or downstream of the sensor OR the blowdown valve fails the sensor will display a low conductivity amp you may be unaware that the boiler conductivity is increasing The optional Fail to Sample thermal switch trips a controller alarm when the controller can t sample the boiler water conductivity Aegis User 7 08 72 AEGIS User Manual 7 1 Boiler Blowdown 101 Sampling 1 to 2 Opens the blowdown valve long enough to get a fresh Sample of boiler water to the conductivity sensor During the Sample time the sensor is heating rapidly so it appear the conductivity is increasing Measure 2 to 3 The blowdown valve closes and during the Measure time a fixed and repeatable amount of cooling occurs so it appear the that conductivity is falling Blowdown OR Wait 3 At the end of Measure if the conductivity is less than the Turn ON setpoint the controller Waits a user set time period 3 to 4 until the next Sample Sensor Watch below Turn ON TURRON 22sss4se2
113. t Invert Sense key UP or DOWN to the target contact set and press ENTER then DOWN Note that in this example RUN STOP U is currently OFF Key ENTER Configure and then UP to Invert Sense Key ENTER and UP to display Yes Key ENTER to select YES and EXIT to display that in this example RUN STOP U now displays ON Key ENTER and UP to RUN STOP U Diagnostic Current State displays that the U contact set is OPEN and that U is inverted amp lnvert Inter lock 8 5 Inverting Contact Sets Invert sense RUN STOP U OFF and Configure mal Diagnostic 4 and Invert sense NO and Invert sense Yes lt lt ana uU OFF Diagnostic current State OPEN amp Invert Sidebar Inverting Sense Contact sets interlock and control when they are ON For non inverted contact sets ON is when the contact set is closed If you wish to Interlock or control when the contact set is open set Invert sense to YES If your contact sets are open when they are measuring the state you wish to alarm control using or log set Invert sense to YES RUN STOP an Invert sense Example Contact set U is used for a RUN STOP switch The switch contacts are OPEN when the switch is set to RUN Invert sense is set for U so that RUN displays on the controller as ON and so that U can be used as a flowswitch for pumps and solenoids
114. t feed ORP setpoints Sidebar _ Controlling Sensor Oxidant 3 OFF No control lt ana f Configu re lt Alarms Limits Control by lt No Control Editing or Exit x E gt then Control by F XN Pumps powered by the controller Relays 1 to 5 are switched ON and OFF based on the value of the controlling sensor or sensors Control Type See next page Each sensor uses a control type based on the water treatment system s effect on the sensor For example a cooling tower conductivity and pH rise as the tower operates amp both these sensor use a Rising Setpoint The ORP of a tower falls as the tower operates amp ORP uses a Falling Setpoint Sensor Math Most feeds are controlled by a single sensor If the control combines more than one sensor with different units the control setpoints must reflect the result Example If the sum of temperature and make up rate in GPM control a pump the ON OFF setpoints are in degrees rate Interlocking amp Blocking Interlocking prevents a chemical from feeding when the tower or boiler is off line Refer to Section 2 8 Blocking prevents one chemical from feeding while another is feeding Refer to Section 2 9 Reliability Setpoints may be set incorrectly Sensors eventually fail Solenoids amp Pumps fault Refer to Section 2 7 Limiting Feed amp Alarms to control a fault response Aegis User 7 08 20 AEGIS
115. t the end of a Sample period when the piping at and upstream of the conductivity sensor is hottest the controller checks the Fail to Sample switch If the switch is hotter than 190F to 200F 88C to 93C its contact set is closed An open contact set indicates a Fail to Sample and the controller sets an alarm 7 3 Fail to Sample Fail to Sample switch Blowdown B2 5 OFF wait Configure lt Alarms Limits lt ana Special Control Capture Sample lt and Va Fail to Sample lt lt None 4 ana 4 4 X Fail to Sample B2 FTS Switch e r X Fail to Sample lt B2 FTS Switch If the surface blowdown line is accidentally valved OFF upstream or downstream of the Fail to Sample switch or the blowdown valve does not open the piping never heats the switch contacts never close amp the controller alarms Surface blowdown piping cools to ambient during the Re sample Wait time and the Fail to Sample contact set opens Aegis User 7 08 76 AEGIS User Manual 7 4 Sensor Watch amp Blowdown Diagnostics To view a Captured Sample blowdown Diagnostic key UP or DOWN to the target blowdown valve and press ENTER Key UP and ENTER Diagnostic Sensor Watch is the real time value of the conductivity sensor It shows the effects of heating cooling and flashing Use Sensor Watch to observe the effect of the blowdown valve opening and cl
116. ter the decimal point from 0 to 2 changing the display of Gray Make up from 21 GPM to 21 36 GPM Sidebar 4 4 Sensor Configure Adjust Resolution Gray Make up G 21 GPM and Configure Diagnostic 4 aa Decimal digits Pn 0 Decimal digits 2 a then F Digits 2 Gray Make up 21 36 GPM When you select the number of digits displayed after the decimal 1 Keep the number to a minimum to unclutter the display making sensor values easier to read amp remember 2 Conductivity is usually not measured with more than 1uS resolution amp is never controlled within 1uS so it s not necessary to display fractional uS 3 Small changes in calculated ppm may indicate a large change in chemical usage so three digits after the decimal is useful The displayed resolution of a sensor does not alter the data log resolution or the resolution used for control or the accuracy of sensor calculations Aegis User 7 08 47 AEGIS User Manual 4 4 Sensor Configure Disabling Sensors To Disable a sensor key Conductivi ty A UP or DOWN to the target sensor 1134 uS and press ENTER Configure Key DOWN and ENTER Configure Diagnostic J lt 3 and Disable Input Key DOWN to view Disable Input Press ENTER to Disable YES The controller removes the sensor from the Temperature B displ
117. ters installed on pump outlet Both precision 1mL Pulse and lower cost Feed Verify or inlet stroke counters are used Cabled 3 wire Measure fed volume for ppm and Inventory calculations Meters and Pumped volumes may Copying requires only controller Copied be copied to other meters for configuration summing control amp data logging Boiler Contact set closes when boiler Applicable for boilers that do not Feedwater feedwater pump ON re circulate Requires only a relay rated for Pump ON Low cost feedwater meter works like pump VAC or a contact set signal from a contact head meter boiler DCS Aegis User 7 08 57 AEGIS User Manual 5 2 Configuring a New Meter Configure To configure a meter key Tower Make up 0 UP or DOWN to the target meter 0 gal and press ENTER lt ana Key UP and ENTER Configure Configure Diagnostic Digital Type lt H Contact Meter Key DOWN to Volume Contact vol ume contact lt and key ENTER and adjust 100 0 if not 100 Gallons contact closure L If you are not installing a Contact Head meter Key DOWN to Digital Type Key ENTER and change the Type or If you ve selected Turbine Meter Digi tal Type v Turbine Meter Key DOWN to K Factor Key ENTER and adjust the E g K Factor or Pulses per Gallon K Factor pi for your meter type and pipe size 100 00 2 Sidebar Contact Head Meters
118. troller reconfiguration Aegis User 7 08 101 AEGIS User Manual This display sequence is only applicable to controllers with the LB LAN Browser option To view or adjust the controller Ethernet setting press ENTER and DOWN to Communicate at the power up or day time display Key ENTER Communicate Displays the current LAN IP address In this example it s the factory default If you are connecting into the site LAN IP address is assigned by the site IT staff Key ENTER to modify Netmask is usually this value for most sites Key ENTER to modify This is the default HTML Port for browsing It can be modified only via the browser The site IT staff may require the controller MAC Address to register allow the controller on the site network The MAC address is six 2 digit hexadecimal numbers separated by colons into 3 groups of 4 to fit the LCD screen In this example the MAC address is 00 90 C2 00 00 00 Communicate 11 7 Communications Communicate Thu 16 54 10 lt 4 S N AO76X486 fa men G oF Configure Y IP Address l 10 10 65 106 d Netmask lt y 255 255 255 0 aE H HTML Port 80 MAC Address 0090 c200 0000 IP Address 10 10 6 106 Sidebar Warning Do not connect the controller Ethernet connection into a site LAN until the site IT staff have assigned a valid IP Address Not Connected to the Site LAN Leave the IP
119. u d feed 2 5 Gallons or 9 46 L Since actual water use is not linear over 12 hours amp peaks around 2 3 PM you d probably select an 0704 pump over a 1601 Feed Setpoints Frequency Controlled Pumps Water Meter Feed Adjust the Measure Volume setpoint to 100G or L and the then Feed setpoint to 50ppm Bleed then Feed If you expected the bleed to be ON 25 of the time it would be on for 3 hours in our 12 hour example In those 3 hours we need to feed 9 46L or 52 5mL min 9460mL 180 minutes Adjust the mL min setpoint to 53 At 180SPM type 0704 pump can feed a max of 75 6 mL min so the controller will allow the setpoint Feed Setpoints ON OFF Pumps Water Meter Feed At 50ppm we ll need to feed 19mL for every 100 Gallons of make up If the 0704 pump is set to 100 stroke amp frequency it will need to be ON for 15 seconds A 0704 pump feeds 75 6mL min 19mL 75 6mL x 60 secs 15 sec Adjust the Measure Volume setpoint to 100 and the Turn ON for setpoint to 15 sec Bleed then Feed If you expected the bleed to be ON 25 of the time it would be on for 3 hours in our 12 hour example In those 3 hours we need to feed 9 46L or 52 5mL min 9460mL 180 minutes Adjust the mL min setpoint to 53 At 180SPM type 0704 pump can feed a max of 75 6 mL min so 52 5mL min 69 Adjust the setpoint to 69 Aegis User 7 08 17 AEGIS User Manual 2 2 Water Meter Feed To view or modify the meter controlling the feed Controlling
120. uctivity Temperature Temperature sensor B to G Compensation rate in degree or None 4 20mA Temperature Temperature sensor B to G Input Compensation rate in degree or Rate to Volume Target meter O to V for resulting volume Rate measured in volume minute or volume hour Water flow rate is usually GPM or LPM or Steam production is usually LBs hour None Corrosion Set if driver card installed Alloy Number 1 Steel 2 Copper Rate Conductivity Sensor A amp C to G Used to correct MPY for error due to water resistance between coupon tips pH Temperature Temperature sensor B to G Controller supplies compensation rate per or degree None ppm Calculate ppm Inhibitor Pump 6 to 9 or feed meter O to V Make up volume meter O to V Cycle Method Fixed or Meter or If Meter select bleed meter O to V None Manual Manual Input Enable an input H to N for use as manual test or drop count tracker or None Inventory Set by the volume meter or Enable an input H to N for use as Inventory pump which uses the input ORP None ORP is not temperature compensated Temperature None It s tempting to temperature compensate temperature in the way that salty snacks and junk food are tempting We need to be strong amp resist Aegis User 7 08 49 AEGIS User Manual 4 5 Sensor Compensation Thermal
121. used on Bleed alarms Key ENTER to reset a bleed alarm Will re trip if either alarm time remains exceeded Displays the last bleed alarm cause and its date stamp Sidebar 6 2 Bleed Alarms Alarms Limits Tower Bleed 2 OFF Setpoints lt ana Alarms Limits lt lt Diagnostic Mins Actuation 45 0 min Minutes Day PT 400 0 min OFF on alarm 4 NO e Reset Alarm lt Yes Alarms None g Alarms Because bleed On time alarms are usually not set to turn OFF the bleed they are typically set tighter to actual operating times for a tower under maximum thermal load These alarms can be used to flag you on maintenance problems with the bleed or changes in the thermal loading of the tower An increase in make up conductivity or an error in adjusting bleed setpoints could also increase bleed time amp trip the alarm The Minutes Actuation alarm starts timing when the bleed turns ON and returns to zero when the bleed turns OFF This alarm does not reset it timing at midnight since an actuation period or bleed cycle may bridge two days Aegis _User 7 08 67 AEGIS User Manual 6 3 Variable Cycles Configure Varying Cycles Tower Bleed 2 ON 1 23hrs lt ana Key DOWN and ENTER Configure Configu re lt Alarms Limits lt ana Varying cycles No and Varying Cycles To select Varying Cycles key UP or DOWN to the target valve or solenoid and press ENTER
122. uses setpoint overshoot and poor control Examples Pumping citric acid into a large swimming pool or adding bleach to a cooling system with a large sump volume The Timed Cycling Special Control feeds for a user defined ON Time then waits for a user defined time before feeding again allowing the system to respond to the fed chemical During the ON Time ON OFF pumps and frequency controlled pumps feed on setpoint control The Chemical 123 Diagnostic display counts down the time in the ON Time and OFF Period Selecting a Special Control automatically sets typical default times or sensor values Adjust the default values for your site s application Aegis User 7 08 22 AEGIS User Manual 2 4 Sensor Controlled ON OFF Feeds To view or modify the Special Control used on a pump or solenoid key UP or DOWN to the target Pump amp press ENTER In this example the Chemical 123 pump is powered by relay 4 and has been ON this feed cycle for 104 seconds Key ENTER amp DOWN to Configure Then UP amp ENTER at Special Control Key DOWN amp ENTER to select Holding Time amp ENTER once selected to view amp adjust the Holding Time period Key ENTER to modify the default 180 minute Holding Time Setpoint control uses the value of the controlling sensor averaged over the most recent 180 mnutes The Diagnostic display shows 22 logged sensor values averaged over the 120 minute Holding Time are controlling relay 4 Va N
123. vel switch Input T shows chemical available feed chemical The chemical pump Interlocked S T Notice that Interlocks may be ORed using the symbol or ANDed using the symbol The controller prevents a mix of ORs and ANDs in any one Interlock Aegis User 7 08 29 AEGIS User Manual 2 9 Blocking a Feed Configure Blocking To view or modify the Blocking used on a pump or solenoid key UP or DOWN to the target Pump Inhibitor 1 amp press ENTER ON Owes 46sec Key ENTER amp DOWN to Configure amp key ENTER Configure pi Alarms Limits The Inhibitor pump is not blocked by any of ame the other pumps valves or solenoids Blocked by sail Key ENTER to adjust none UP or DOWN to change the Blocked by and Key RIGHT to add more than one Block Editingor Exit Press ENTER to change Blocked by 3 gt or EXIT to leave unchanged 7 then In this example we ve prevented the Inhibitor from feeding if the pump connected to Relay 3 is ON Blocked by lt 3 Sidebar Blocking prevents one or more chemicals from feeding at the same time If you are owed time or volume on the blocked pump the controller remembers and feeds when the block clears A pump may be Blocked by one or more other pumps solenoids or valves Examples 1 Some products jell or react in the feed line when fed at the same time Block ChemicalA pump connected to Relay 4
124. ximum feed 4 20mA to control feed rate at the 100 ON setpoint Base While the tower s running or Sulfite Small boilers provide a contact set the boiler is on line feed Amine closed when the boiler is on line chemical Boiler Treatment Works best when the boiler load is constant Timed Feed occurs at a user set Biocides Refer to Section 3 of this manual time amp day Oxidants Dispersants Aegis User 7 08 16 AEGIS User Manual 2 1 Chemical Feed 101 If the concentration of chemical in your heating or cooling system is at the target ppm then all you have to do is add chemical to treat the make up Typically you ll estimate a feed rate adjusting in subsequent weeks as indicated by ppm level testing Check Pump Rating Pumps are rated for Gallons hour Liters nour pumping into a nominal feed line head or back pressure The lower the back pressure the higher the pumping rate The following table is for ProMinent pumps feeding into a 40 PSI feed line typical for cooling towers Pump Type ml stroke Liters hr Gallons hr 1601 0 13 1 404 0 371 1602 0 24 2 592 0 685 1001 0 10 1 080 0 285 1002 0 24 2 592 0 685 0704 0 42 4 536 1 198 0705 0 50 5 400 1 427 Your pump type may differ These pumps are typical for small to medium cooling towers or boilers Example If you expected a cooling tower to make up 50 000 Gallons over 12 hours amp you needed to feed a 50 ppm product yo

User Manual - ProMinent Fluid Controls, Inc.

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