Advantage Controls Mega Tron Touch Screen Controller Instructions

: September 24, 2024
: Advantage Controls

Table of Contents

Advantage Controls Mega Tron Touch Screen Controller
FAQs
Introduction
Installation
Front Panel Description
System Operation Overview
Menu Navigation
Maintenance
Warranty
FCC Warning
Get the Advantage in Water Treatment Equipment
CONTACT INFORMATION
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Download This Manual (PDF format)

Advantage Controls Mega Tron Touch Screen Controller

FAQs

Q: How do I determine which optional features are included in my unit?

A: Check the model number label on the controller enclosure to see which optional features apply to your specific unit.

Q: Can I add additional features to my MegaTronMTcontroller?

A: Consult a representative for more details on additional option codes and how to upgrade your controller with extra features.

Introduction

The MegaTronMT microprocessor-based controllers are programmable through a front panel touch screen and can be configured to control a wide range of digital and analog inputs. Your particular unit’s functions can be determined by comparing the units model number to the Model Numbering table listed below.

Model Numbering

MegaTronMT units have several base system control functions and unit optional features. Your unit may be supplied with one or more of the features described in this manual. To determine what features apply to your unit check the model number label located on the controller enclosure.

Base System Control Functions

C – Tower Conductivity Control
B2 – Boiler No Temp Conductivity
M – Make-up / Misc Conductivity
P – pH Control
R – ORP Control
T – Temp probe
F1-F5 – Chemical Feed Timers
E – Flow Switch

Whole Unit Optional Features

A – Conduit Connections (115 VAC)
A3 – Liquid tights only for (220-240 VAC)
H15 – Internet card with CAT5 & Modbus TCP/IP
H25 – Internet card with CAT5 & BACnet TCP/IP
N – 4-20mA input (N4 or N8)
O – 4-20mA outputs (O4 or O8)
S – pH Saturation indexes
V – 5 volt D.C. output with water meter wires
W – Auxiliary Flow Meter Inputs, 10 inputs

Model numbers start MT followed by the System Control functions. A dash (-) separates the whole unit options listed after all base system control functions. Example: MTCPF3E-N4.Notice: Your unit may not have all the features and functions described in this manual. This list represents our most popular options, additional option codes are available. Consult the representative for more details.

Description of Unit

MegaTronMT controllers can control single or multiple recirculating water systems, including cooling tower and boiler applications, and may have various features depending on the model number.

Control Functions

Each of these control functions are based on an analog input from a probe and will include user settable relay control settings along with a High and Low Alarm setting and Limit Timer. Each control function will include a control relay output. When the reading reaches the Set Point, the control relay is activated until the reading changes by the Differential amount.

System Conductivity – The conductivity function of the controller is designed to monitor and control Total Dissolved Solids (TDS) in a recirculating system like a cooling tower or boiler in terms of electrical conductivity measured in microsiemens/cm. This control function is also referred to as Bleed.
Make-up or Miscellaneous Conductivity -This conductivity with the probe installed in the fresh make-up water line can be used to control the conductivity of the tower in terms of cycles of concentration by calculating the difference between the make-up water’s conductivity and the system’s conductivity. It can also be used to monitor another conductivity with no feed timers associated with it.
pH – The pH function monitors and controls pH on a scale of 0-14 pH units.
ORP – The ORP function monitors and controls ORP on a scale of +/- 1000 mV.

Chemical Feed Timers

Chemical feed timers are designed to automate the addition of various chemicals by activating a relay output. Multiple timers can be supplied depending upon the model number and each timer will include a relay output. All timers can be programmed to be one of the following types.

Pulse Time – Accepts pulses from a make-up water meter (supplied separately). It can accumulate 1- 9999 gallons before activating the timer to run.
Feed with Bleed – Activates the relay output simultaneously with the bleed and limits the amount of time the relay output will be on during the bleed cycle.
Feed after Bleed – Activates the relay output based on a user-defined percentage of time-based on the bleed-off, another timer, or digital input. The relay is activated after a bleed cycle and runs for the set percentage of that bleed cycle.
Recycle – The relay is continuously repeating a defined OFF cycle time and a user-defined ON cycle time.
28 Day – The timer is based on a 28-day cycle with four independent programmable feed cycles with bleed and bleed lockout settings.

Installation

Electrical Wiring

The Megatron MT controller has an internal regulated fused power supply that will operate off of 90 to 250 VAC at 47 to 63 Hz on the incoming wiring. Each output relay is individually protected with a replaceable fuse. Relay outputs will equal incoming line voltage.

CAUTION

There are live circuits inside the controller even when the power switch on the front panel is in the OFF position. Never open the front panel without first disconnecting power from the outlet. Prewired controllers are supplied with an 8 foot, 18 AWG power cord with USA style plug. A #1 Phillips driver is required to open the front panel.
Low voltage signal wires (probes, flow switch, water meter, etc.) should never be run in conduit with high voltage (like 115VAC) wires.
Never attempt to land connections to the controller without first disconnecting power from the outlet.
Do not block access to disconnect power during mounting and installation.
The controller should be connected to its own isolated circuit breaker, and for best results, the ground should be true earth ground, not shared. Any attempt to bypass the grounding will compromise the safety of users and property.
The electrical installation of the controller must be performed by trained personnel only and conform to all applicable National, State, and Local codes.
Operation of this product in a manner not specified by the manufacturer may result in damage to equipment or persons.
Avoid mounting in locations that expose the controller to direct sunlight, vapors, vibration, liquid spills or extreme temperatures; less than 0°F (-17.8°C) or greater than 120°F (50°C). EMI(electromagnetic interference) from radio transmissions and electric motors can also cause damage or interference and should be avoided.

NOTES:

Liquid tight fittings and some labeled signal leads are provided for all signal (low voltage) connections for both pre-wired and conduit units.
Units should be ordered with the appropriate option to provide powered relays designed for the incoming/outgoing power.

Pre-Wired

Pre-wired units are supplied with a 16 AWG cable with a 3-wire grounded USA 120V plug for incoming power, along with 16 AWG grounded receptacle cords for each output control relay. One pre-wired power cable is supplied for each bank of five relays, and each power cable must be plugged in to provide power to the corresponding bank of relays.

Conduit

Conduit units are predrilled at the factory and supplied with conduit knockouts for easy hard wiring to supplied detachable connectors on the relay card(s) located in the lower section of the controller. Remove the screws of the lower panel for access.

NOTES:

Do not drill holes in the upper section of the enclosure.
All relays provide an N.O. and N.C. output.
The control function that activates each relay output is pre-configured at the factory based on the options selected. To change relay activation, see on page 30.
See page 34 for common bleed/blowdown valve wiring.
Refer to label inside the lower panel cover for the specific relay board configuration supplied.
Relays configured as “dry contact” should only have D.C. voltage ran through them. The GND connection point replaces the NEU when configured for dry contact. (Example: Use GND and N.O. for a normally open dry contact relay output.)

WARNING : If jumpers are not configured for dry contact, line voltage will be supplied.

Rev. I Relay Card Wiring

Rev. R Relay Card Wiring

Back Pane Connections

System Card Connections

WARNING

6 conductors plus a shield must be ran from the controller to the probe. Connect the 4 wires for the temperature at the terminal block supplied with the sensor as shown.

4-20mA Output Card Wiring

A. Isolated Configuration

For isolated 4-20mA outputs an external power source for the loop must be supplied. JP4 and JP5 on the board must be jumpered for isolation, with an external power source supplied to the external VDC input. The external power source must not exceed 24 volts DC.

B. Non-isolated Configuration

For non-isolated 4-20mA outputs the controller will supply the power for the loop. JP4 and JP5 must be jumpered for non-isolated, and no connections are made to the external VDC points.

NOTE : The power for the mA output loop is always provided by the controller with either an isolated or non-isolated configuration.

NOTE : Older green versions of the 4 input cards supply +12 VDC and ground on the voltage terminals, and newer blue versions supply +12 and -12 VDC instead of ground on the “G” positions, if not configured for isolated voltage.

Mounting Instructions

Select a mounting location that provides the operator easy access to the unit and a clear view of the controls through the cover of the controller. The location should be convenient for grounded electrical connections, and the needed sample line plumbing, and should be on a stable vertical surface.

Electrode Installation

MegaTronMT controllers may come configured for various circulating water systems. Listed below are instructions for typical cooling tower and boiler installations. Your specific installation requirements may differ but should conform to these instructions as much as possible for proper operation.

A. Cooling Tower

The standard probe(s) and/or flow assembly for cooling tower installations are constructed of schedule 80 PVC and supplied with 3/4” slip fittings for installation into a sample line. To ensure proper operation the sample line must have a flow rate of 3-10 gpm. Inlet pressure must be higher than outlet pressure in order for water to flow past the electrode(s) to achieve the required rate. The probes are temperature-compensated for increased accuracy.

NOTES:

Install an isolation valve on either side of the flow assembly so electrodes can be easily isolated for removal and cleaning.
A line strainer is recommended upstream from the probes to protect against fouling and damage.
Mount pH or ORP electrodes vertically.
The green solution reference wire must be connected to either the pH or ORP sensor. If both pH & ORP are present on the system card, only one solution reference connection is needed.
Systems with a flow switch require 2-3 gpm flow rate to operate outputs.

WARNINGS:

Electrodes are O-ring sealed, which, if damaged, will cause a leak.
Do not allow pH sensor tips to dry out, damage will occur.
Do not exceed a water temperature range of 32°F (0°C) to 140°F (60°C).
Do not exceed a maximum pressure of 125 psi (8.618 bar)

Typical Cooling Tower Installation Diagram

Cooling Tower Probe Assembly

Standard Tower Probes

Conductivity………………..E-4A
pH……………………………..PE-2
ORP………………………….OE-2

Boiler

Standard boiler electrodes have an MNPT stainless steel bushing and are supplied with an FNPT cross designed for mounting in the skimmer (surface) blowdown line. Sampling of the boiler’s water can be achieved using one of two typical plumbing configurations (continuous sampling or timed and/or sample & hold). For a successful installation, it is critical to observe the recommended distances and pipe sizes provided in the installation drawings. For best results, the electrode cross should be mounted in a 1” skimmer blowdown line within 4’ of the boiler. Smaller line sizes and greater distances may affect the response time and accuracy of the electrode. A flow- throttling device downstream from the probe (within 24 inches) is required to ensure that the electrode is exposed to water and not steam. Properly installed and adjusted, this device will prevent flashing in the electrode chamber.

NOTES:

Install a fully-ported type of valve between the electrode and the boiler. This allows the electrode to be isolated for removal and cleaning.
A flushing line and 1/4 turn type ball valve should be installed in the bottom of the cross to periodically “flush” sediment from the electrode chamber.
Make sure the alignment arrows on the probe end up parallel to the flow for best performance.

WARNINGS:

The probe must be fully immersed in the system water to read correctly. Steam flashing will result in incorrect readings.
Do not exceed a maximum water temperature of 436°F (224°C)
Do not exceed a maximum pressure of 350 psi (24.1 bar)
A throttling device must be installed downstream from the electrode.

Boiler Conductivity Electrodes

Wiring Note : BE-4RTD probes require a 6-conductor cable from controller to probe; BE-32 probes only require a 2 conductor cable.

Typical Continuous Sampling Installation

Warning – Do not use on bottom blowdown lines, only continuous or surface blowdown lines.

Typical Timed Sampling and Sample and Hold Boiler Installation

Warning – Do not use on bottom blowdown lines, only continuous or surface blowdown lines.

Front Panel Description

SET UP/RUN – System initializes into RUN mode. Press this key to put the controller in SET UP Mode and see the HOME menu page.
HOME – Used to go back to the HOME menu page.
HELP – Used to access help screens.
BACK – Used to go back to the last menu screen viewed or clear values keyed in that are not wanted.

The default is the RELAY status menu, but this can be changed by navigating to the desired screen and pressing the HELP button. Follow the on-screen instructions to set the new hot key location.

System Operation Overview

Operation

MegaTronMT controllers have two modes of operation, RUN and SET-UP.

RUN – This mode is for normal operation. In the RUN mode, the display will show each system’s parameters.

If an alarm is present, the ALARM box will flash how many alarms are activated. No settings may be entered or changed in the RUN mode. Readings are updated every 6 seconds on the screen while in the RUN mode.

SET-UP – This mode is used to make adjustments to settings and readings on the controller. To access the SET UP mode from the RUN screen, press the SETUP/RUN key.

Typical Start-up Instruction

Complete all installation steps before beginning this procedure. Ensure that all controlled devices (pumps, solenoid valves, etc.) are operational and connected to the controller. Open the isolation valves to allow water to pass through the sample stream assembly. Before beginning the startup procedure, familiarize yourself with the programming and operation of the system by reviewing the menus available. Use the keys of the controller to skim through all your options.

Calibration

All MegaTronMT controllers are factory-calibrated for temperature, conductivity, pH, and ORP. All units are shipped with the date preset, and the clock set to your current time. These readings and settings should be verified for accuracy, and adjusted as per the instructions listed below.

Conductivity – To calibrate the conductivity reading, remove the electrode from the line and wipe the flat surface with a clean cloth. Re-install the electrode and open the isolation valves to allow a sample across the probe. Be sure to allow the reading to stabilize for one minute. Select “SYSTEM COND” from the “CALIBRATION” menu. Then key in the corrected conductivity value. Press ENTER to log in to reading.
- Note: Boiler probes must have a fresh hot sample. See page 16 for more details.
pH – Under normal operating conditions, pH calibration is achieved using the following steps. From the “CALIBRATION” menu, select “SYSTEM PH.” Enter the correct pH value. Press ENTER to log in to the new reading.
ORP – To calibrate ORP, from the CALIBRATION menu, select “SYSTEM ORP”. Compare the displayed reading to the actual system ORP. If these readings do not match, key in the correct ORP value, and push ENTER.

There are limits to how much the calibration can be adjusted. The instrument will only accept new conductivity values which are from 1/3 to 8x the present reading. Any entry outside this range will cause a default to the original reading. If this happens, call 1-918-686-6211 for technical assistance.

To access the menus, press the Set Up / Run key on the front panel. This takes you to the Home menu. MegaTronMT controller’s menus are easily navigated by pressing the associated number key next to a menu box on the screen. Once you have stepped through the sub-menus to reach a point at which a value or selection is made, a Pop-up window will appear prompting you to enter a desired value or selection.

NOTE : When entering new numeric values, enter all available digits (characters).

Home Menu

From the HOME menu select the desired menu. The menu name explains what parameters can be programmed in the menu.

SYSTEM1 – Setting control set points for conductivity, temperature, pH, and ORP for System 1.
SYSTEM2 – Setting control set points for conductivity, temperature, pH, and ORP for System 2.
CUSTOMIZE – Giving the controller, each system, mA input, and all relays a user-defined name.
mA SIGNALS – Menus for setting mA inputs and outputs calibration and control settings.
CONFIGURE – Menus for configuring passwords, relay activations, setting history interval, flow
switch, contrast, temperature scale.
HISTORY – Allows for view history on board in a graph form.
FLOW METERS – Menu for configuring flow meter totalizing.
RELAYS – Menu for resetting accumulated “ON” times and manual relay activation.

Set Points

The same basic format is used for defining each available analog probe input’s control parameters. Boiler conductivity systems will also have an additional menu step for programming the sampling method desired from continuous, timed or sample and hold.

SET POINTS – For setting the relay set points for the available analog probe readings such as conductivity, pH, ORP, or temperature.

NOTE : In the Setpoint pop-up screen the direction (Rising or Falling) of the setpoint can also be set. Rising setpoints will activate the control relay when the particular probe reading rises above the setpoint and will stay activated until the reading comes down by the amount of the differential. If set for Falling the relay is activated when the probe reading falls below the setpoint and stays on until the probe reading comes back up by the amount of the differential.

Set Point Options

SET POINT – What reading turns the relay on.
DIFFERENTIAL – Amount reading changes before the relay is turned off
HIGH ALARM – What reading generates a High alarm?
LOW ALARM – What reading generates a Low alarm?
LIMIT TIME – What amount of continuous bleeding will generate a time alarm notice? The bleed is not locked out by this alarm.

Note : Each alarm value can also be set up to be displayed or not on the front screen, as well as remotely notified or not if connected to the WebAdvantage server.

Make-up or Miscellaneous Conductivity

Tower systems with this option have an additional menu on the review page labeled SAMPLE METHOD. The simple method pop-up screen allows the user to select continuous or cycle control. With cycles selected under Settings, the value of a best and worst cycle is attached to a best and worst make-up conductivity value. The controller will control the cycles proportionally between the two cycle values as the make-up conductivity changes between the two identified values. Note : If continuous is selected, the standard settings are used for system conductivity and the miscellaneous conductivity (labeled M COND) is the set points menus.

Boiler Conductivity

Conductivity on boiler systems can be configured for Timed Sampling, Sample and Hold, or Continuous, for the conductivity sampling method.

Timed sampling incorporates a sample timer which allows the boiler to be sampled at periodic intervals. Sample intervals are adjustable from 1 minute to 99 hours, 59 min. Sample duration (on-time) is adjustable from 1 second to 99 minutes, 59 seconds.

Sample and hold uses a sample timer for periodic sampling intervals. The unit will sample for its duration and then hold the blowdown valve closed for a settable period (hold time). The conductivity is checked at the end of the hold period, if additional blowdown is required the blowdown valve is held open for a preset amount of time (blowdown time). Then sample cycle is repeated.

Pulse Sample allows the use of a defined “pulse” type feed timer to initiate a sample based on make-up water instead of the sample interval timer.

A continuous sample has a sample of boiler or condensate water going past the probe continuously. If the reading is above the set point, blowdown will continue until the set point has been satisfied.

SET POINT – What reading turns the relay on
DIFFERENTIAL – Amount reading changes before the relay is turned off
HIGH ALARM – What reading generates a High alarm notification?
LOW ALARM – What reading generates a Low alarm notification?

pH and ORP

The pH and ORP set point settings follow the same format as shown above in section 2.1

INTERRUPT – Only applies to pH settings and allows the Interruption of pH control during bleed, other chemical feed, or both.
ORP SET POINT 2 – If a 28-day timer is interlocked to
ORP, the ORP control will go off of SET POINT 2 during the 28-day timer’s run time.

Note : When the Limit Time value is met it will force off the control relay being driven by pH or ORP. To reset the limit timer and get the control relay active again, enter a new Limit Timer value.

Aux Inputs

Auxiliary inputs are the digital inputs for optional Flow Switch and other digital inputs, such as low drum level alarms. From these menus, alarms, notifications, action, and latching settings can be made.

LATCHING SIGNAL – Allows a digital input to stay Active until a second latched input becomes active.
ACTIVE WHEN – Set if input is active seeing closedor open.
ACTION DISPLAY – Set if the input is being set asalarm or just On/Off.
ALARM DELAY – How long input must be in open/ closed before registering.
ALARM NOTIFY – Set the alarm notification.

Calibration

Calibration is for adjusting the displayed value of a probe’s reading to match your tester or known solution. Pick the system or mA input first. From a particular system, pick the probe to calibrate.

CALIBRATION – For adjusting the actual reading values of the available analog probe inputs, such as conductivity, pH, ORP, or temperature.

Conductivity Calibration

CALIBRATE – With a clean probe online see the system’s water enter the known (tested from a calibrated handheld tester) value.
RESET ZERO – With the probe out of solution and dry,enter a new zero point. Note: Probe must be dry!

NOTE : In the calibration pop-up window, the raw analog-to-digital (A/D) value will be displayed. A new calibration value should only be entered when the probe is sensing a stable A/D value. If the system is a boiler the associated relay can be forced on in the pop-up to allow for a fresh hot sample. Boiler probes should have fresh hot water blown past them for a minimum of 2 minutes before calibrating. The A/D reading has a range of 0 to 32,767. If it is at one end of the range or the other when trying to calibrate, something is wrong with the probe or wire run.

pH and ORP Calibration

POINT – With a clean probe online seeing the system’s water enter the known (tested from a calibrated handheld tester) value.
POINT – Enter a known Low value with a clean probe in a buffer solution. Then enter a known High value with the clean probe in a buffer.

Notes :

Probes must be rinsed between buffers when doing a 2-point calibration and given at least 30 seconds in solution to adjust to the buffer.
There must be at least 2 full pH points between buffer solutions. Using a buffer of 4 and 10 is the best procedure. ORP buffers should be at least 200 points apart.

Timers

A unit may have up to 5 selectable timers for each system on a controller. All timers are associated with their system, so for a % of post bleed timer looks at the bleed of that system.

TIMERS – Select the type (28-Day, pulse, limit, percent, recycle, percent of post bleed, or other event), as well as the run times of each timer available per system.

Timer Type Selection

A pop-up screen lets you scroll through the various timer types available.

Pulse – A water meter activated timer.
Limit – Feed with bleed with a maximum run time or limit for one bleed cycle.
Recycle – A continuous recycle timer with ON and OFF settings.
Percent Post Bleed – For feed after bleed for a settable percentage of the bleed time with a maximum run time. 28-Day – A biocide or event timer.

Timer Set

Each timer type selected will have its own unique Set Up submenu with additional selections specific to the type of timer selected. The page displayed before entering the Set Up menu of a timer provides an overall review of the timers current settings.

Pulse Timer

ACCUMULATE – The number of gallons or liters from the water meter to count before activating the timer.
RUN TIME – The amount of time for the timer to run METER INPUT – Select water meter 1 or 2 for the timer’s activation. Water meters 1 + 2 can be selected only if the meters have the same contact value.
BLEED INTR – Allows the pulse timer to be interrupted during conductivity bleed. While interrupted, you can also define the maximum number of timer run-cycles (1-9) to store for playback.

Recycle Timer

ON CYCLE – The amount of the defined time that the timer is to be on.
OFF CYCLE – The amount of time that the cycle will be off.
ON/OFF TIMER – This is the displayed countdown of time for the cycle the timer is in.

Post Bleed Timer

% of SOURCE – The % of the post bleed time or other source time that you want the timer to run.
LIMIT TIMER – The limit timer is a safety feature that limits a single feed cycle to the amount of time set, regardless of the calculated post feed %.
SOURCE – Select between cond. bleed, another timer or digital input as the time source.

With Bleed Timer

LIMIT TIMER – This timer starts when the conductivity bleed starts and turns off when the bleed stops or until the limit time has been reached. The time can be set in MM:SS.

28-Day Timer

Each 28-Day timer has Program 1-4 for programming the various feed times. While the programming steps for the four programs are the same, each can have its own independent settings.
WEEKS – The week(s) that the timer is to feed. DAYS – The day(s) that the timer is to feed.
START – The time of day for the timer to start.
RUN – How long the timer take to run?
PREBLEED – How long the controller is to bleed down before feeding in chemical. Note: The pre bleed starts at the START time programmed above.
MIN COND – The minimum conductivity that the unit will bleed down to.
FEED LOCK – Which other system timer to lockout during this timer’s run time?
BLEED LOCK – How long to lock out the bleed function after the timer’s run time starts.
FLOW LOCK – 3 selections if a system has a flow switch:
- Only With Flow – If there is no flow at the start time no feed occurs.
- With or Without Flow – Feed occurs regardless of flow condition.
- Flow Only/Store1 – If there is no flow at the start time, one run cycle will occur when flow does come on. Only one run will occur regardless of how many more than 1 are missed due to no flow.

NOTE: ORP lock is only for systems with the ORP function. If interlocked, the ORP setpoint will switch to the 2nd setpoint for control during the timer’s programmed RUN time. The feed device must be connected to a relay activated by the ORP setpoint/control function.

Alarms

ALARMS – Shows any current alarms. Accessible from the Setup/Run screen.

Water Meters / Totalizers

Each system with a timer on it will have 2 water meter inputs. Each of these can have the incoming contact defined, allowing the controller to keep track of water usage. If desired, the controller can calculate evaporation loss by subtracting the difference between a system’s two water meter inputs.

CONTACT VALUE – Defines the numerical value for a contact; i.e. 10.
CONTACT UNIT – Defines the units of measurement for a contact; i.e. Gallons / Contact. If there is a mA input set for a gpm or lpm reading, that mA input can be selected in the Contact Units as the source for the meter input to total flow rate.
RESET TOTAL – Resets the totalizer count.
EVAP CALC – Defines which way to subtract the two water meter inputs for an evaporation value. DEBOUNCE – An additional amount of time the input will wait before accepting another water meter contact to reduce false contacts from a chattering read switch.

Option W Totalizers

Megatron MT controllers with the “W” option may have 1 to 4 auxiliary flowmeter inputs. These additional inputs are for tracking various flow meter devices (additional water meters or flowmeters in a metering pump’s discharge tubing). They can also be linked to a system’s water meter input for additional tracking and alarm capabilities, including bleed flow/no flow, exceeding too much flow in a 12- or 24-hour period. Units with Auxiliary Flow meter inputs have a Home menu selection for Totalizers. The Totalizer menu has selections for each of the System Water Meters, plus one named Aux Meters.
Select the system water meter to set up or go to Aux Meters to set-up the auxiliary flow meters.

mA Signals

mA OUT SETTINGS – Selecting source and range of outputs.
mA IN SETTINGS – Setting control and alarms for inputs
mA OUT CALIBRATION – Calibrating outputs.
mA IN CALIBRATION – Calibrating inputs and displayed range.

4-20mA Out Settings

Units with a 4-20mA output option will have a menu for setting up the 4-20mA output. The 4mA and 20mA values can be defined by giving the output proportioning capability. i.e. 4mA = a pH of 6.0 and 20mA = a pH of 8.0.
SIGNAL SOURCE – Select which probe reading the mA will use as its reading source.
4 mA VALUE – What the 4mA signal equals
20mA VALUE – What the 20mA signal equals on the assigned signal sources scale.
CONDITIONER – Select a second reading that can change or condition the original mA output.

4-20mA Input Settings

SET POINT – What reading turns the relay on DIFFERENTIAL – Amount reading changes by before the relay is turned off.
HIGH ALARM – What reading generates a High alarm notification?
LOW ALARM – What reading generates a Low alarm notification?
DISABLER – Selected input will disable HIGH/LOW alarm notifications and a control relay being activated by the input’s setpoint.

4-20mA Output Calibration

4-20mA outputs can be calibrated to ensure that the output generated by the controller and received by the external device match. With a voltmeter connected across the out and return wires (see page 7) of the 4-20mA output channel, to be calibrated, go into the output’s Low or High calibration

The number displayed in the Calibration dialog box can range from 0-4,095, with 800 equal to 0 mA output, and 4,030 equal to 20 mA. This number range of 0-4,095 is the raw digital-to-analog (D/A) values and is strictly used for reference. The D/A numbers that you get will vary based on your installation conditions.

While in the High or Low calibration pop-up screen use the up and down arrows to change the output value being read with the voltmeter. Adjust the High value for the 20-mA reading and the Low value for the 4-mA value.

4-20mA Input Calibration

4-20mA inputs can be calibrated to ensure that the input seen by the controller from the external device match. It also allows for setting the 4-20mA input into a number range that relates to the value being read. Select the Input to be calibrated. Firmware version MT.16.03 and newer have logic that suspends any control logic if the mA received is 50% below the stored 4mA value. A # will be placed in the RUN screen for any mA value in this invalid state.

The 20mA and 4mA values are where the controller’s raw analog to digital value is adjusted to match a 20mA (full scale) and 4mA (bottom of scale) signal from the external device inputting the 4-20mA input. The external device must be connected to the controller and showing either full or bottom of scale when calibrating each. The number shown along with either the 20mA or 4mA while calibrating is the raw A/D value, and is only a reference. A 20mA input should be around 5,500, and 4mA around 1,100. If the A/D numbers are not in this range, check the input device.

If a mA Input is receiving an A/D value 50% below the stored value for 4mA, the reading is viewed as invalid, and control logic is suspended. This is represented on the RUN screen with a #.
The MAX and LOW calibration inputs define what to display for a 20mA input and a 4mA input. For a drum level sensor on a 55-gallon drum, the value for MAX should be 55 and MIN should be 0. A number is automatically displayed between 55 and 0 based on the input value. The scale and units of measure (gallons for example) are set in the Customize menu from the Home page. If the decimal position is changed in Customize, all mA input settings and MIN/MAX will need to be reset.
OFFSET – Changes the current displayed value of the 4-20mA input reading to allow for a manual 1pt calibration of the displayed value.
FACTORY DEFAULT – If the 20mA or 4mA calibration has been incorrectly set (not at 4 or 20) this will reset the settings back to a factory value for 4 and 20.

Customize

This menu allows the user to define the on-screen name of the unit plus the name of each system and relay. The user can also set up the Notepad for each system and the 4-20mA Input’s name and unit of measurement.

RUN SCREEN – Allows the user to select what will be shown on the screen while the controller is in the RUN mode, such as displaying temperature readings, water meter totals for a particular system, or the conductivity units of measure.

NOTE: When entering values for custom names use the numerical keys for numbers and the up/down arrows to scroll through all the characters of a keyboard. Press the right arrow to advance the cursor after setting a desired value. Press the Help button to place the last entered character into the new cursor space to speed up the process. The Help button will also jump advance through the characters.

Notepad

The Notepad function allows the user to set up and store manually entered data or perform simple calculations between two different sensor or notepad inputs. There are ten notepad fields per system card and each can be given a custom name, UOM and number range.

NAME – Pick from a list of defined names or customize your own or if you want the Notepad to be a Calculation. NUMBER – Set the number range.
UNITS – Set the units of measurement.
ALARMS – Set Hi/Low alarm points and how frequently a new value is expected to be manually entered via the History menu.
If the Notepad is a calculation no time alarm is defined and the calculation results are stored in history at the time stamp interval.
CALCULATION – If a Notepad is to be a calculation select the type of calcualation desired.

Calculation Types:

None
% Increase
Product
Total
Ratio
% Difference
Difference
SENSOR 1 – The first sensor reading or Notepad value to be used in the calculation.
SENSOR 2 – The second sensor reading or Notepad value to be used in the calculation.

mA Inputs

NAME – Name the input.
UNITS – Set the units of measurement.
NUMBER – Set the number range.

Run Screen

This lets you customize various aspects of the RUN screen.

MAIN SCREEN – Customize what is displayed on the RUN screen.
SCREENS SHOWN – Pick if the mA input & Aux Flow screens are scrolled.
CYCLE TIME – The amount of time between screen scrolls.
COND UNITS – Select the units of measure to be displayed with the conductivity reading.

Configure

Provides access to menus to set up passwords, relay activation, temp scale, display contrast, flow switch, inputs, history time stamps, factory set-up and system information.

FLOW SW – Defines a flow switch to be open or closed with the flow.
FACTORY – A factory-only menu
TEMP SCALE – Set Celsius or Fahrenheit
ZIGBEE –
HISTORY – Sets the history time stamp interval. SYS INFO – Tells unit software specifics.

Password

ADMIN PASSWORD – The administrator password gives access to all menus except factory set up.
USER PASSWORD – The user password allows the user to access HOME menus that are made available in USER SET UP.

Date and Time Set Up

DATE AND TIME – For setting the date, time, day, and week on the controller.

Relays

CONFIGURE RELAYS – This menu lets you choose a Main Action or function (timer 1, conductivity, alarms etc…) to activate a relay. A pop-up screen appears with a list of all available activation functions to arrow through.

Additional relay logic is available with up to 3 additional Activators and up to 4 Disablers allowing multiple functions to activate the same relay and multiple functions to prevent the relay from coming on. There is also a Daily Max amount of time that a relay can be on. If a relay is on for the max amount, it does not let the relay come on anymore that day (a 24-hour clock is used for the day with midnight being the start of the day). The Delay setting is the amount of time a control function must come on before the relay will react and activate. This is to prevent a relay from chattering on/off if a reading is bouncing around the set point or alarm.

History

This menu is used to set the history “time stamp” interval, the water meter daily history starting hour, the alarm delay period and the USB history save format.

INTERVAL – The amount of time between each history time stamp for probe readings.
W/M HOUR – The time of day that the daily water meter history cycle is to start.
ALARM DELAY – The amount of time an alarm has to be on before it is recognized as an alarm.
SAVE FORMAT – The USB history save format.

Flow Switch

This menu allows the user to select if a flow switch signal will represent a flowing condition when a “closed” or “open” signal is seen for each systems flow switch input. Users can also select if timers can work always or only with flow.

Temperature Scale

This menu is used to select the type of temperature scale to display.

Network

The Network menu is used when a controller is being remotely communicated with either a local network connection or over the internet on the WebAdvantage server. IP Address, IP Mask, Gateway, and other information can be viewed from this menu.
SETTINGS – This menu is used for setting up the remote WebAdvantage communications and is covered in a separate manual. http://www.advantagecontrols.com/downloads/pdf/M-WebAdvantage.pdf
Note : The Network card must be RESET after making any changes to Network setting in order to save changes and reset communications.

System Information

System information will identify the version of firmware installed in the controller along with the controller’s serial number.

History

The onboard history allows for viewing the history of the probe readings, relay activations, key-pad activity, calibrations, water meter hourly and daily logs, and alarms for each system present. It is also where Notepad data is entered and reviewed. An initial overview page is displayed showing your current sample interval, the calculated number of days the unit can keep probe history for before losing the oldest. The number of sensor samples and relay/alarm events and Notepad entries currently stored is also displayed.

NOTE: The history can be reset by going to the configure menu and entering a different sample interval. After the new sample interval has been set, the onboard history is reset.

Viewing History

RELAY LOGS – Relay activations displayed in a log form. Arrow up to advance through the log.
ALARM LOG – Alarm activations in log form.
SENSOR HISTORY – For selecting the parameters and viewing of a given probe reading’s history in log or graph form.
EVENT LOG – Displays various activities.

Notepad Entries

The Notepad section under History is where the user goes to enter new values for the customized notepad items. Each individual notepad item’s manually entered entries are stored in the unit’s history and can be reviewed in log or graph form after 4 or more values have been entered.

Water Meter History

The water meter history allows the user to review both water meter one and two of a particular system in both an hourly format (for the past 24 hours) or a daily format for the past 60 days. If an evaporation calculation is being kept, a daily history of this value is also available.

Flow Meters

A unit may have up to 10 option auxiliary flow meter inputs. These additional inputs are for tracking various flow meter devices like Advantage Controls’ FloTracker in a metering pump’s discharge tubing. They can also be linked to a system’s water meter input for additional tracking and alarm capabilities. Select the Aux Flow Meter to set-up or review.

Flow Meter Setup

he Flow Meter setup gives the user access to the various settings for the flow meter along with a review of the current settings.
PULSE VALUE – Defines the numerical value for a contact, i.e. 225.
UNITS – Defines the units of measure for a contact, i.e. Pulses / Ounce.
RESET TOTAL – Resets the totalized count of the meter.
VERIFY ALARM – If a flow meter is linked to a control relay, the controller will give an alarm if it does not receive a contact or pulse from the aux meter within the amount of time defined, or if it gets a contact when the relay is not on.
RELAY LINK – The relay link informs the Aux meter input is relevant to the control function that the selected relay is being driven by. For example, if the Aux flow meter is a metering pump’s FloTracker then it should be linked to the relay that is driven by the feed timer that pump will be controlled by. If the Aux meter is going to be linked to a water meter in a bleed-off line then it should be linked to the relay that is controlling the bleed-off valve.
VOLUME ALARM – If FloTracker has been selected as the Tracking method, an alarm will occur when the defined VOLUME USED has passed through the flow device.
Note: If Rate and Volume tracking has been selected an alarm will occur if the defined MAX VOLUME amount is measured within the defined TIME CYCLE which can be a 12- or 24-hour period.
RESET VOLUME – Resets the Volume Alarm totalizer.
METER LINK – This selection only shows if the tracking method is Rate and Volume and tells the auxiliary flowmeter input to get its signals from one of the system water meters already wired to the controller’s water meter inputs. If this is selected, no wiringto the auxiliary input is required and the PULSE VALUE and UNITS settings are auto-populated from the water meter’s settings.
TRACKING – Provides a pop-up screen to select either FloTracker or Rate and Volume tracking.

Relays

STATUS – Allows for viewing accumulated relay ON times, temporary forcing relays ON or OFF or seeing which relay is on.
RESET – Allows the accumulated run time of a particular relay to be reset to zero.
FORCE – Allows a relay to be manually forced ON or OFF for a single event from 0-999 minutes. When the event is over the relay goes back to its normal automatic control.
In the STATUS view the accumulated ON time is shown along with the main activator, custom name and current status:
ON = Relay on by relay activators
OFF = Relay off by normal logic
OFF-T = Relay off for daily max
OFF-D = Relay off for relay disabler
ON-A = Relay activated by activator other than main action
H-ON = Relay manually forced on
H-OFF = Relay manually forced off

Maintenance

The only required maintenance for normal uninterrupted operation of your MegaTron MT controller is cleaning of the electrode(s). After initial startup, it is a good idea to clean the electrode frequently until a schedule based on need has been developed. Since each application is unique, it is difficult to estimate the required frequency of cleaning. The first cleaning should take place after about one week of the system being online.
To determine the required cleaning frequency, record the reading on the controller before the electrode is removed for cleaning. After cleaning, record the new reading. If a change is observed in the two readings, the electrode was dirty. The more significant the change, the dirtier the electrode. If no change occurs, cleaning needs to be done less often.

Conductivity Electrode Cleaning Procedure

Record the current conductivity reading.
Turn off water flow through the electrode loop, bleed pressure from the line and remove the electrode.
Use a clean cloth and a mild cleaning solution to remove loose dirt etc., from the flat surface of the electrode.
If the electrode has deposits such as scale attached to the electrode surface, a more aggressive cleaning approach will be needed. There are several ways to do this, the preferred method being the one that is easiest for the user.
- a. Use a mild acid solution to dissolve deposits.
- b. Lay a piece of sandpaper (200 grit or finer) on a flat surface such as a benchtop. “Sand” electrode to remove stubborn deposits. Do not wipe the surface with your finger. Oil from your skin will foul carbon tips.
Reinstall the electrode in the system. After the reading stabilizes, calibrate the unit to a reliable test reading.

Many times, an electrode can appear to be clean, but the unit still cannot be calibrated. If this is the case, use one of the more aggressive electrode cleaning procedures listed in step 4 above. Recheck the calibration after completion of this procedure. If no change was observed in the reading, replace the electrode. If a change occurs but the unit still will not calibrate, repeat the procedure as many times as necessary.

pH and ORP Electrode Cleaning Procedure

Remove the pH electrode from the system.
Spray with water and/or detergent, using a soft brush to dislodge any fouling.
Visually inspect the electrode for signs of damage.
Calibrate the electrode while it is in a known solution.

Slow response or non-reproducible measurements are signs that the electrode has become coated or clogged. The pH glass is susceptible to mounting by many substances. The speed of response, normally 95% of the reading in less than 10 seconds, is dramatically degraded when the pH glass is coated. To restore the speed of response for a pH electrode, clean the bulb with a high-quality detergent, methyl alcohol or other suitable solvent using a Q-tip. Rinse well with distilled water and retest. If the electrode now responds, but erratically, soak the sensor in 0.1 Molar HCl for 5 minutes. Remove and rinse with water and place in 0.1 Molar NaOH for 5 minutes. Remove, rinse again, and then place the sensor in pH 4. buffer for 10 minutes before use.

Warranty

Advantage Controls’ Product Warranty

Advantage Controls warrants control systems of its manufacture to be free of defects in material or workmanship. Liability under this policy extends for 24 months from the date of installation. Liability is limited to the repair or replacement of any failed equipment or part proven defective in material or workmanship upon the manufacturer’s examination. Removal and installation costs are not included under this warranty. The manufacturer’s liability shall never exceed the selling price of the equipment or part in question.
Advantage disclaims all liability for damage by its products caused by improper installation, maintenance, use or attempts to operate products beyond their intended functionality, intentionally or otherwise, or any unauthorized repair. Advantage is not responsible for damages, injuries or expenses incurred through the use of its products. The above warranty is in lieu of other warranties, either expressed or implied. No agent of ours is authorized to provide any warranty other than the above.

Day Billing Memo Policy

Advantage Controls maintains a unique factory exchange program to ensure uninterrupted service with minimum downtime. If your controller malfunctions, call 1-918-686-6211, provide our technician with Model and Serial Number information. If they are unable to diagnose and solve your problem over the phone, a fully warranted replacement will be shipped, usually within 48 hours, on a 30-Day Billing Memo. This service requires a purchase order, and the replacement is billed to your regular account for payment. The replacement will be billed at the current list price for that model less any applicable resale discount. Upon return of your old panel, credit will be issued to your account at either 100% if your unit is in warranty or at 50% if your unit was out of warranty. The exchange covers only the panel. Electrode and enclosure are not included.

FCC Warning

This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instruction, may cause interference to radio communications. It has been type- tested and found to comply with the limits for a class A computing device pursuant to subpart J of part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial or industrial environment. Operation of this equipment in a residential area is likely to cause interference in which case the user, at his own expense, will be required to take whatever measures necessary to correct the interference.

Common boiler blowdown valve connections.

LD2 Wiring for MegaTron MT Refer to manual for additional information

Note : The brown wire to the mA input (-) may be green instead of brown on some cables.

Pyxis STA-500 and other single mA output sensors Wiring for MegaTron MT

Note : Refer to full manual for additional information

Pyxis STA-525 series sensors Wiring for Mega Tron MT Note: Refer to full manual for additional information

Pyxis changed the wiring on the 525 series of sensors in late 2022 so that there is not a -4-20 wire. The green is still there but not used.

Pyxis STA Dual Output Sensors Wiring for MegaTron MT Note: Refer to full manual for additionalinformation

588 Tagged Polymer & PTSA
FCLSS Free Chlorine & pH (765)
CLOSE Chlorine Dioxide & pH (765)
772TP Dissolved Oxygen & temp Controller Wiring

Controller Wiring

Internally connected to power ground
Pyxis 765SS sensor

Controller Settings

MegaTron wiring for Autotrol Turbine Meters

1” METER = 65 PULSES / GALLON
2” METER = 15 PULSES / GALLON

Note : Use 22 AWG (.76 mm) twisted pair shielded wire for all of these low voltage signal connections

CABLE-7P-2A

Wiring a Nano-M to a MegaTronMT, or *Other Building Management System
Note: Refer to full manual for additional information

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