Maxim THOMPSON MILLER LEAMAN PDA/ATF-MAX User manual

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Table of Contents
I. Safety Consideraons..…………………………………….. 1
II. Descripon………………...…...………………...…………… 1
III. System Overview……………………………………………. 2
IV. Operaon……………………………………………...………. 3
V. Menu Screens……………..…..……………………………… 4
VI. Layout & I/O Conguraon….………….…………….. 8
VII. Electrical Connecons…………………………………… 9
VIII. Electrical Schemac……………………………………… 10
IX. Limited Warranty & Contact Info…………………… 11
I. SAFETY CONSIDERATIONS
GENERAL WARNING
Ensure all appropriate personnel read owner’s manual prior to installaon and/or operaon of controller. Failure to
Comply with instrucons and safety precauons could lead to personal injury or product damage. Please call
and ask to speak with one of our customer service representaves if there are any quesons.
CAUTION
Disconnect controller from power source before servicing or removing cover.
II. DESCRIPTION
The PDA/ATF-MAX is a dual purpose controller for both monitoring the pressure dierenal with alarm indicator and automacally controlling
the ush valve of a Thompson strainer.
OWNER’S MANUAL

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III. SYSTEM OVERVIEW
The PDA/ATF-MAX system consists of the following primary components:
The controller interface contains the controller screen and keypad interface as shown. The clear cover provides protecon for the
controller and can be opened with the two latches on the side of the controller housing to access the keypad.
A) PDA/ATF-MAX controller
B) Power supply
C) Transducer / Wiring assembly
D) Mounng bracket
E) Flush valve assembly
A) Controller Screen
B) Keypad

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Startup
1) Plug in the power plug into a standard 115VAC wall outlet
2) Upon power-up, the company informaon screen will be shown for 15 seconds.
3) Aer 15 seconds, the screen will change to the manifold pressure screen and will begin monitoring dierenal pressure across
the strainer.
Automac Flushing
Under normal operaon, a med ush will be iniated on a periodic schedule dened by the PDA/ATF-MAX programmed seng.
(every 24 hours per factory seng).
In addion, a med ush will be iniated when the dierenal pressure reaches the setpoint dened by the PDA/ATF-MAX
sengs.
See the MENU SCREENS secon for informaon on changing factory sengs.
Consecuve Flush Alarm
If three consecuve ushing operaons are detected by the PDA/ATF-MAX, a consecuve ush alarm will be triggered and no addi-
onal ush cycles will be iniated unl the alarm is cleared.
To reset the Consecuve Flush Alarm, rst, correct the cause of the alarm, then push the red ESC buon on the controller while a
Status screen is displayed. The oponal Customer’s Remote Reset input, Input iB, allows for a remote reset of the Consecuve
Flush Alarm.
Scrolling through Menu Screens
The PDA/ATF-MAX allows the operator to scroll through a selecon of menu screens by pressing the A or B buons. Press A
to scroll backward to the previous menu or press B to scroll forward to the next menu. The LCD backlight will automacally
turn on for 5 minutes when a buon is pressed, thus allowing the operator to easily view the menus in low light situaons.
Changing Parameter Values
To change an adjustable value, rst scroll to the appropriate menu screen using the A or B buon. Follow the direcons below to
modify the value.
1) The current selected value will show ashing blocks. Use the + or - keys to select another value if desired.
2) Press OK on the selected value. The value will change from ashing blocks to ashing numbers. Flashing blocks indicate the
value is locked into memory. Flashing numbers indicates the value is unlocked and can be changed.
3) Press the + or - buons to change the value. Holding the + or - buon will allow the value to increase at a faster rate aer the
rst 10 increments have passed.
4) When nished, press OK to save the change to memory. The value will return to ashing blocks.
REFER TO THE MENU SCREENS SECTION FOR DETAILED INFORMATION ON EACH SCREEN AND/OR PARAMETER.
IV. OPERATION

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V. MENU SCREENS
Miller-Leaman Inc.
800-881-0320
Power Up Screen
The Power Up screen displays the company informaon for Miller
Leaman. Each me the PDA/ATF-MAX is plugged in, or when power is
returned aer a loss, this screen will be displayed for 15 seconds. The
Power Up screen can be viewed by unplugging the PDA/ATF-MAX’s
power, then plugging it back on again.
Manifold Pressure Screen:
Aer 15 seconds, the Power Up screen will be changed to the Manifold
Pressure screen. The Manifold Pressure Screen displays the pressure in
PSI for inlet manifold, outlet manifold, and the calculated dierenal
pressure between the inlet and outlet manifolds.
Manifold Pressure
Inlet : 0034.0
Outlet : 0032.0
PSID : 0002.0
Status: OFF MAX
PSID : 00.0
Inlet Pressure Low
PSID : 00.0
Status: OFF MAX
>> High PSID <<
Status: OFF MAX
The Inlet Pressure transducer is monitored to sense sucient Inlet
Pressure and allow Timed Flushes, and Dierenal Pressure Flushing.
When the inlet pressure is sensed as lower than the Setpoint, the
Flush Interval mer will be paused, and a med Flush will not occur.
Dierenal Pressure Flushing will also be inhibited. DP sensing will
connue, and the Status Screen will display >> High PSID << on the
second line. When the Inlet Pressure is sensed as low, the top line of
the Status Screen will display Status: OFF MAX alternang with Inlet
Pressure Low.
The Status Screens
The status screens provide system feedback, allowing the operator to monitor when and how the Flush cycle is occurring. A Flush
cycle can be started manually, automacally via the Flush Interval Timer or the Pressure Dierenal Transducers (PSID), or remote-
ly by oponal Customer Input Signal.
The current status of the controller is displayed as follows:

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V. MENU SCREENS (CONT.)
Status: AUTO MAX
PSID : 0003.0
Press OK to Start
A Flush Cycle
Status: AUTO MAX
>> High PSID <<
Press OK to Start
A Flush Cycle
Status: ON MAX
Flush Cycle
Press ESC to Stop
Status: AUTO MAX
PSID : 0003.2
Press OK to Start
A Flush Cycle
Status: ON MAX
>> System Alarm <<
Press ESC to Stop
Status: AUTO MAX
Indicates that the Inlet Pressure is not Low, and the controller is waing
for a Flush cycle to begin. The system is assumed to be in normal ltra-
on mode and owing water. The Flush interval mer is running. The
controller displays Status: AUTO MAX when the Inlet Pressure in not
low and a Flush cycle has not begun. A Flush can occur from the Timer,
a high pressure dierenal via the Pressure Transducers, indicated as
>> High PSID << on the display, manually by the operator by pressing
the green OK buon on the controller, or by the Customer Input Signal.
Status: ON MAX
Indicates that the system is in a Flush cycle, iniated either by the Oper-
ator, by the Flush Interval Timer, the Pressure Transducers, or by the
Customer Input Signal. The controller will stop displaying the PSID val-
ue, but will instead indicate Flush Cycle.
The Flush Valve is opened, and the Alarm Light/Sounder output is ash-
ing. This output ashes the Light and Sounder throughout the enre
Flush cycle. The Flush Duraon is nominally set for 8 seconds. The Flush
Duraon me is adjustable - see Setup screen #3 for informaon.
Aer this Flush duraon me, the Flush Cycle is complete. The Open
Flush Valve Output will be turned o, the Alarm Light/Sounder will be
turned o, and the Status Screen will display Status: AUTO MAX.
Status: System Alarm
On any of the status screens, a System Alarm screen can be acvated.
The second line down will be alternately ashing >> System Alarm <<
and whatever was on line 2 before the system alarm occurred.
A system alarm can be any customer specic alarm. The only standard
system alarm is the Consecuve Flush Alarm. This alarm occurs when
the Flush cycle has been iniated three mes in a row by the Pressure
Transducers (PSID). Output #4 will be turned ON, which will then ener-
gize Relay 1 (R-1). Relay 1 provides a Dry Contact signal for the Custom-
er’s Consecuve Flush Alarm monitoring.
The Consecuve Flush Alarm will also cause the Alarm Light/Sounder to
change from ashing to steady ON. The Consecuve Flush Alarm will
also disable any addional Flush Cycles from occurring.

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Flush Interval & PSID Setpoint Screen
The user-dened interval at which the system will iniate an automac
Flush cycle. The Flush Interval mer resets aer any Flush cycle occurs
(by mer, PD Transducers, operator, or Customer Input Signal). This
value is adjustable from 1 minute to 1000 hrs. Seng both values to
zero will turn o the Flush mer. It is recommended that the operator
adjust the Flush interval mer so that the system Flushes by me be-
fore the pressure dierenal set-point is reached. Factory Preset value
is 24 Hours. This setpoint is located on Screen 2.
The Pressure Dierenal seng in PSI, which when compared to the
calculated Dierenal Pressure from the Inlet and Outlet pressure
transducers, will cause a Flush cycle to begin when exceeded. The rec-
ommended PD setpoint is 1-2 PSID above the “clean” PSID reading at
the systems MAXIMUM ow rate. Seng this PSID Setpoint at low ow
may result in connuous Flushing at higher ow rates, since the Pres-
sure Dierenal increases with ow rate. This value is adjustable from 1
to 30 PSID. Factory preset is 7 PSID. This set-point is located on Screen
2.
Flush Duraon Screen
The me alloed for the Flush Valve to be open. This me should be set
according to the type of lter and the nature of the material being l-
tered. This value is adjustable from 5 to 300 seconds. Factory Preset
value is 8 seconds. This setpoint is located on Screen 3. Please Note -
Flush Valve is not completely open unl 3 seconds into this me val-
ue.
V. MENU SCREENS (CONT.)
Inlet Low Pressure Setpoint Screen
The Inlet Pressure transducer is monitored to sense sucient Inlet Pres-
sure and allow Timed Flushes, and Dierenal Pressure Flushing. On
these systems, when the inlet pressure is sensed as lower than the Set-
point, the Flush Interval mer will be paused, and a med Flush will not
occur. Dierenal Pressure Flushing will also be inhibited. DP sensing
will connue, and the Status Screen will display >> High PSID << on the
second line. When the Inlet Pressure is sensed as low, the top line of
the Status Screen will display Inlet Pressure Low.
Setpoint Adjustment - The Inlet Low Pressure Setpoint is adjustable
from 5 (PSI) to 20 (PSI). Factory Preset value is 15 (PSI). This setpoint is
located on Screen 4
Inlet Low Pressure
Setpoint: 00015
Flush Duration
Seconds: 00008
Flush Interval
HOURS:MM 00024:00
Enter
PSID Setpoint 07

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Flush Counters Screen
Trip: The number of Flush cycles that have occurred since the counter
was last reset. This includes cycles iniated both manually and auto-
macally. This counter can be reset by pressing the red ESC buon from
the Flush Counters screen.
Life: The number of Flush cycles that have occurred in the controller’s
lifeme. This includes cycles iniated both manually and automacally.
This counter cannot be reset.
Time Since Last Flush & Triggered By Screen
This screen is READ ONLY for informaon and is not adjustable. The
screen shows the amount of me that has elapsed since the system last
Flushed (example: 00011:30 is 11 hours and 30 minutes) and how the
last Flush was triggered. There are four trigger possibilies:
1) Local Operator - Flush triggered manually by an operator
2) Timer - the backush was triggered by me as set on the Backush
Interval screen.
3) PD Transducer - the Flush was triggered by a high pressure dieren-
al, as set on the PSID setpoint.
4) Customer Input - Oponal Customer’s Input signal at input I1 iniat-
ed the Flush Cycle.
V. MENU SCREENS (CONT.)
Flush Counters
Trip: 00010
Life: 000000010
Press ESC to Reset
Time Since Last
Flush 00000:04
Triggered By:
PD Transducers
Controller ID Screen
This screen is READ ONLY and is used to idenfy the controller version
and ID.
Maxim4 PDA/ATF-MAX
Controller v.3.5
Copyright(c)2021
ML31155

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VI. LAYOUT & I/O CONFIGURATION
Outputs
(Note - each output’s le terminal has been connected to the 24VDC power. The output’s right terminal provides the output sig-
nal)
Output #1 controls the Flush valve.
Output #2 is not assigned.
Output #3 is a relay output for the Alarm Light/Sounder - DP Alarm is ashing and Consecuve Flush Alarm is steady.
Output #4 Consecuve Flush Alarm signal - relay output turned on when the Consecuve Flush count reaches the setpoint. This
output is wired to the coil of Relay 1 (see above) to provide a Dry Contact output.
Inputs
I1 - The oponal Customer Iniate Flush input will signal the PDA/ATF-MAX to start a Flush cycle.
IB - The oponal Customer Remote Alarm Reset input will signal the PDA/ATF-MAX to remotely reset the Consecuve Flush Alarm.
The Analog/Digital Input locaons allow Miller-Leaman Inc. to design customer specic programs. These programs are then able to
receive and process both digital and analog signals from devices such as Pressure Transducers, Flow-meters, Level Switches, etc.
Inputs IC & ID are the Inlet and Outlet Pressure Transducer connecons. These provide a 0-10Vdc signal into the controller. These
signals are converted into pressure level values and compared to each other for the pressure dierenal value. When the PD value
exceeds the PD setpoint, the PDA/ATF-MAX is signaled to start a Flush cycle. The Inlet Pressure Transducer also is used to disable
the Flush Timer and Flush Signal from Dierenal Pressure, should the Inlet Pressure be less than the Inlet Low Pressure Set-point.
Menu
Screen
Keypad
Audible / Visual
Alarm

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VII. ELECTRICAL CONNECTIONS
NOTE: When using an external power source, the input power to the Controller must be the same as indicated on the
upper le side of the PDA/ATF-MAX. Typically the controller is 24 volts DC. Plug the provided 24VDC Power Supply into
a standard 120VAC Outlet, observing all state and local codes.
Flush Valve
The Flush Valve is connected to Output#1 terminal(+ signal, white wire), Common (-) power termi-nal (Power Common, black
wire), and 24VDC (+) power terminal (Power +, red wire). Please Note - with power on and no signal, the Flush Valve will
move to its closed posion, unl it is closed.
Pressure Transducers
The Pressure Transducers have a three wire connecon, white assigned to the input (IC or ID), blue to the Common (-) terminal,
and the brown to the 24VDC Power (+) terminal .
Customer Iniated Flush Signal (Oponal)
The oponal Customer Iniate Flush Signal input is connected to Input I1. Please Note - this signal must be a discrete 24VDC
signal, that references the Common (-) terminals.
Customer Remote Alarm Reset Signal (Oponal)
The oponal Customer Remote Alarm Reset Signal input is connected to Input IB. Please Note - this signal must be a discrete
24VDC signal, that references the Common (-) terminals.
Consecuve Flush Alarm Output Signal (Dry Contact, Oponal)
Output #4 is the discrete Consecuve Flush Alarm 24VDC output signal, that is connected to the coil of Relay 1 (R-1). This relay
provides a Dry Contact connecon for Customer Consecuve Flush Alarm signal.
Review the Electrical Schemac secon prior to making any connecons to the controller.

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VIII. ELECTRICAL SCHEMATIC