Acromag TT239-0600 User manual

USB Programmable, DIN Rail Mount
Thin Transmitter
Model TT239-0600
Isolated 2-Wire Transmitter, Frequency/PWM/Pulse Input
4-20mA Output
USER’S MANUAL
ACROMAG INCORPORATED
30765 South Wixom Road
Wixom, MI 48393-2417 U.S.A.
Copyright 2018, Acromag, Inc., Printed in the USA.
Data and specifications are subject to change without notice.
Tel: [phone]
Fax: [phone]
email: [email protected]
8501004J

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 2 -
http://www.acromag.com
[2 ]
https://www.acromag.com
Table of Contents
GETTING STARTED
DESCRIPTION............................................................................................4
Key Features........................................................................................................................4
Application..........................................................................................................................4
Mechanical Dimensions .......................................................................................................5
DIN Rail Mounting & Removal..............................................................................................6
ELECTRICAL CONNECTIONS.......................................................................7
Sensor Input Connections ....................................................................................................8
Output/Power Connections ...............................................................................................10
Earth Ground Connections .................................................................................................12
USB Connections................................................................................................................13
CONFIGURATION SOFTWARE..................................................................14
Quick Overview –Android .................................................................................................14
Quick Overview –Windows ...............................................................................................15
OPERATION STEP-BY-STEP......................................................................17
Connections.......................................................................................................................17
Configuration.....................................................................................................................19
Calibration (Optional) ........................................................................................................22
BLOCK DIAGRAM....................................................................................23
How It Works.....................................................................................................................23
Flow Chart.........................................................................................................................24
Measurement Techniques..................................................................................................25
TROUBLESHOOTING ...............................................................................25
Diagnostics Table...............................................................................................................25
Service & Repair Assistance ...............................................................................................26

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 3 -
http://www.acromag.com
[3 ]
https://www.acromag.com
ACCESSORIES..........................................................................................27
Software Interface Package................................................................................................27
USB Isolator.......................................................................................................................27
USB A-B Cable....................................................................................................................27
USB A-mini B Cable............................................................................................................27
USB OTG Cable ..................................................................................................................28
End Stops...........................................................................................................................28
SPECIFICATIONS .....................................................................................29
Model Number ..................................................................................................................29
Input .................................................................................................................................29
Output...............................................................................................................................32
USB Interface.....................................................................................................................33
Enclosure & Physical..........................................................................................................34
Environmental...................................................................................................................34
Agency Approvals ..............................................................................................................35
Reliability Prediction..........................................................................................................35
Configuration Controls.......................................................................................................35
REVISION HISTORY .................................................................................37
All trademarks are the property of their respective owners.
IMPORTANT SAFETY CONSIDERATIONS
It is very important for the user to consider the possible adverse effects of power, wiring, component, sensor, or software
failures in designing any type of control or monitoring system. This is especially important where economic property loss
or human life is involved. It is important that the user employ satisfactory overall system design. It is agreed between the
Buyer and Acromag, that this is the Buyer's responsibility.
The information of this manual may change without notice. Acromag, Inc. makes no warranty of any kind with regard
to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular
purpose. Further, Acromag, Inc. assumes no responsibility for any errors that may appear in this manual and makes no
commitment to update, or keep current, the information contained in this manual. No part of this manual may be
copied or reproduced in any form without the prior written consent of Acromag, Inc.

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 4 -
http://www.acromag.com
[4 ]
https://www.acromag.com
GETTING STARTED
DESCRIPTION
Symbols on equipment:
Means “Refer to User’s Manual
(this manual) for additional
information”.
The TT239 is an ANSI/ISA Type 2 transmitter designed to interface with frequency-
time domain sensors and transducers, measure the input signal frequency or duty
cycle, and modulate a 4-20mA current signal to drive a two-wire current loop. The
transmitter will condition periodic or pulse waveform signals, and provide an
isolated process current output. Configuration is performed using software and a
USB connection to Windows-based PC’s (Windows XP and later versions only).
Key Features
•Fully configurable using Windows software via USB.
•Thin 12.5mm wide enclosure for high-density DIN-rail mounting.
•Wideband frequency inputs from 0.01Hz to 100KHz.
•Rapid response time and high accuracy.
•Measures Frequency and PWM/Duty Cycle.
•Adjustable output update time, cutoff frequency, debounce, and sample
averaging.
•Accepts input voltage amplitudes up to ±170VDC (120VAC).
•Interfaces with both zero-crossing and non-zero crossing signals.
•Software configurable pull-up and pull-down resistors.
•+4VDC/+3VDC input pull-up for interfacing with sensors and transducers.
•Input and output circuits are fully isolated from each other.
•Convenient two-wire loop power with non-polarized output connections.
•Normal or reverse acting output.
•Namur compliant loop current.
•Wide-range DC power input from 12–32VDC.
•Wide ambient temperature operation from –40°C to 80°C.
•Very low Output Ambient Temperature Drift better than ±20ppm/°C.
•Thoroughly tested and hardened for harsh environments.
•CE Approved.
•FCC Conformity Class B.
•UL/cUL Class I, Division 2 Approved.
•Model TT239-0600 is ATEX/IECEx Certified for Explosive Atmospheres.
II 3 G Ex ec IIC T4 Gc -40oC ≤Ta ≤+80oC
DEMKO 15 ATEX 1561X IECEx UL 18.0091X
Application
The TT239 transmitter is designed for high-density mounting on 35mm T-type DIN
rails. Modules may be mounted side-by-side on 0.5 inch (12.5mm) centers.
This model accepts frequency or pulse inputs and isolates the input signal allowing
it to mate with grounded or non-grounded sensors.
!

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 5 -
http://www.acromag.com
[5 ]
https://www.acromag.com
The output signal is transmitted via a two-wire, 4–20mA current loop. The two-wire
current signal can be transmitted over long distances with high noise immunity. Its
inherent live-zero 4mA offset current offers built-in output fault detection, should
an output wire break. Extra connection screws at the output allow it to be
optionally wired for a “sourced” 4–20mA output configuration (see Option Output
Wiring).
Mechanical Dimensions
Modules may be mounted to 35mm
“T” type DIN rail (35mm, type
EN50022), and side-by-side on
12.5mm (0.5-inch) centers.
WARNING:
IEC Safety Standards may require
that this device be mounted within
an approved metal enclosure or sub-
system, particularly for applications
with exposure to voltages greater
than or equal to 75VDC or 50VAC.
99.0
(3.90)
114.5
(4.51)
12.5
(0.50)
DIMENSIONS ARE IN MILLIMETERS (INCHES)

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 6 -
http://www.acromag.com
[6 ]
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DIN Rail Mounting & Removal
Refer to the following figure for mounting and removing a module from the DIN rail.
Mounting
A spring loaded DIN clip is located on the input side bottom. The rounded edge of
the output side bottom allows the module to tilt upward so that it may be lifted
from the rail when prying the spring clip back with a screwdriver. To attach a
module to T-type DIN rail, angle the top of the module towards the rail and place
the top groove of the module over the upper lip of the DIN rail. Firmly push the
module downward towards the rail until it snaps into place.
Removal
To remove a module from the DIN rail, first separate the input terminal blocks from
the bottom side of the module to create a clearance to the DIN mounting area. A
screwdriver can be used to pry the pluggable terminals out of their sockets. While
holding the module in place from above, insert a screwdriver into the lower path of
the bottom of the module to the DIN rail clip and use it as a lever to force the DIN
rail spring clip down while pulling the bottom of the module outward until it
disengages from the rail. Tilt the module upward to lift it from the rail.

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 7 -
http://www.acromag.com
[7 ]
https://www.acromag.com
ELECTRICAL CONNECTIONS
WARNING –EXPLOSION HAZARD –Do not disconnect equipment unless power has
been removed or the area is known to be non-hazardous.
WARNING –EXPLOSION HAZARD –Substitution of any components may impair
suitability for Class I, Division 2.
WARNING –EXPLOSION HAZARD –The area must be known to be non-hazardous
before servicing/replacing the unit and before installing.
Wire terminals can accommodate 14–26 AWG (2.08–0.13mm2) solid or stranded
wire with a minimum temperature rating of 85oC. Input wiring may be shielded or
unshielded type. Ideally, output wires should be twisted pair. Terminals are
pluggable and can be removed from their sockets by prying outward from the top
with a flat-head screwdriver blade. Strip back wire insulation 0.25-inch on each lead
and insert the wire ends into the cage clamp connector of the terminal block. Use a
screwdriver to tighten the screw by turning it in a clockwise direction to secure the
wire (0.5-0.6Nm torque). Since common mode voltages can exist on signal wiring,
adequate wire insulation should be used and proper wiring practices followed. As a
T-Rail
35mm DIN Rail
SCREWDRIVER SLOT
FOR REMOVAL FROM
"T" TYPE DIN RAIL
TOP
BOTTOM
(INPUT SIDE)
(OUTPUT SIDE)
TT2XX MODULE DIN RAIL MOUNTING AND REMOVAL
SPRING CLIP
USE SCREWDRIVER TO REMOVE
MODULE FROM RAIL AS SHOWN
TT2XX MODULE
TILT MODULE UPWARD TOWARDS RAIL AND
HOOK ONTO UPPER LIP OF RAIL. ROTATE
MODULE DOWNWARD TO ENGAGE SPRING
CLIP ONTO LOWER LIP OF RAIL.
!

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 8 -
http://www.acromag.com
[8 ]
https://www.acromag.com
rule, output wires are normally separated from input wiring for safety, as well as for
low noise pickup.
Important –End Stops: For hazardous location installations (Class I, Division 2 or
ATEX/IECEx Zone 2) it must use two end stops (Acromag 1027-222) to secure the
module(s) to the DIN rail (not shown).
Sensor Input Connections
NOTE:
Since common mode voltages
can exist on signal wiring,
adequate wire insulation should
be used and proper wiring
practices followed. As a rule,
output wires are normally
separated from input wiring and
from power wiring for safety, as
well as for low noise pickup.
TIP:
Input and output terminal blocks
are a plug-in type and can be
easily removed to facilitate
module removal or replacement
without removing individual
wires.
Sensor wires are connected directly to the module input terminals at the bottom of
the module (the spring-loaded DIN clip side). Transmitter input signals are isolated
from output and power. Observe proper polarity when making input connections.
Refer to the example input connections on the following page.
•Transmitter input signal is isolated from output.
•Inputs are polarized. Observe proper polarity.
INPUT SIDE
OUTPUT SIDE
(BOTTOM VIEW)
INPUT SIDE
INPUT TERMINALS
TB1TB2
FRONT
DIN RAIL
SPRING CLIP
DIN RAIL
SPRING CLIP
INPUT TERMINALS
OUTPUT TERMINALS
COM
4
3FINP
FRTN 2
1
COM
2
1
4
3
!

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 9 -
http://www.acromag.com
[9 ]
https://www.acromag.com
TB1
OPTIONAL
CABLE
Generator
Waveform
1
FINP
FRTN 2
SHIELD
GROUND
SINUSOIDAL/SQUARE/PULSE
SHIELDED
Pickup
Magnetic
MAGNETIC PICKUP
V+V+
OR
OPTIONAL
CABLE
SHIELD
GROUND
SHIELDED
OPTIONAL
CABLE
SHIELD
GROUND
HIGH-SIDE SWITCH
SHIELDED
OPTIONAL
CABLE
SHIELD
GROUND
LOW-SIDE SWITCH
SHIELDED
SEE NOTE
(Open Collector/Drain)
OR
OPTIONAL
CABLE
SHIELD
GROUND
TTL
SHIELDED
SOURCING PROXIMITY SENSOR
+V
SEE NOTE
SEE NOTE
SEE NOTE SEE NOTE
OPTIONAL
CABLE
SHIELD
GROUND
SHIELDED
SEE NOTE
(Open Collector/Drain)
(2-Wire)
PULL-UP
PULL-DWN
UNIPOLAR
BIPOLAR
PULL-UP
PULL-DWN
UNIPOLAR
BIPOLAR
PULL-UP
PULL-DWN
UNIPOLAR
BIPOLAR
PULL-UP
PULL-DWN
UNIPOLAR
BIPOLAR
PULL-UP
PULL-DWN
UNIPOLAR
BIPOLAR
PULL-UP
PULL-DWN
UNIPOLAR
BIPOLAR
ENABLE
INPUT MODE
ENABLE
LOGIC LEVEL
ENABLE
INPUT MODE*
ENABLE
LOGIC LEVEL*
ENABLE
INPUT MODE
ENABLE
LOGIC LEVEL
ENABLE
INPUT MODE
ENABLE
LOGIC LEVEL
ENABLE
INPUT MODE
ENABLE
LOGIC LEVEL
ENABLE
INPUT MODE
ENABLE
LOGIC LEVEL
*EITHER MODE
MAY BE
SELECTED
OPTIONAL
CABLE
SHIELD
GROUND
DRY CONTACT
SHIELDED
SEE NOTE
PULL-UP
PULL-DWN
UNIPOLAR
BIPOLAR
ENABLE
INPUT MODE
ENABLE
LOGIC LEVEL
TB1
1
FINP
FRTN 2
TB1
1
FINP
FRTN 2
TB1
1
FINP
FRTN 2
TB1
1
FINP
FRTN 2
TB1
1
FINP
FRTN 2
TB1
1
FINP
FRTN 2
NOTE:
This ground connection is recommended for best
results. If sensors are inherently connected to ground,
use caution and avoid making additional ground
connections which could generate ground loops and
measurement error.
REFERENCE:
Bipolar mode for zero-crossing signals
Unipolar mode for non-zero crossing signals
Internal 12.4KΩpull-up resistor to +4VDC with
±28mV hysteresis or +3VDC with ±84mV
hysteresis
Internal 1KΩ pull-down resistor to –FRTN

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 10 -
http://www.acromag.com
[10 ]
https://www.acromag.com
Output/Power
Connections
Connect a DC power supply and load in series in the two-wire loop as shown in the
drawing below. This transmitter has an ANSI/ISA Type II output in which the
transmitter’s power and output signal share the same two leads, and the
transmitter output has a “floating” connection with respect to earth ground applied
at the loop supply minus terminal.
Output connections are not polarized. The output + and –designation are for
reference only with current normally input to Output+ and returned via
Output–(current-sinking).
Loop supply voltage should be form 12–32VDC with the minimum voltage level
adjusted to supply over-range current to the load, plus 12V MIN across the
transmitter, plus any transmission line drop.
Variations in power supply voltage between the minimum required and a
maximum of 32VDC across transmitter, has negligible effect on transmitter
accuracy.
Variation in load resistance has negligible effect on output accuracy, as long as
the loop supply voltage is set accordingly.
Note the traditional placement of earth ground in the current loop. The
transmitter output minus varies off this ground by the voltage drop in the load
resistance and lead-wire.
The traditional loop-powered “sinking” output connections are shown above.
Shielded twisted-pair wiring is often used at the output to connect the longest
distance between the field transmitter and the remote receiver as shown. The
output of this transmitter fluctuates relative to earth ground by the voltage drop in
the load and connection wire. This makes it flexible in the way it connects to various
“Receiver” devices.
ANY MODEL TT2XX-0600
I
I
I
RLOAD
THIS TRANSMITTER IS CURRENT LOOP POWERED
NOTE: OUTPUT TERMINALS ARE NOT POLARIZED AND
PLUS & MINUS LABELS ARE FOR REFERENCE ONLY.
OPTIONAL WIRING TERMINALS C ARE HELD IN
COMMON AND USED FOR "SOURCING" LOOP WIRING.
SEE OPTIONAL OUTPUT WIRING DIAGRAM.
5 6
–+
6
5
87
C C
INPUT SIDE OUTPUT SIDE TOP VIEW
(OUTPUT SIDE)
TB3
(OUTPUT)
TB1
(INPUT)
TB2
(INPUT)
TB4
(COMMON)
TRADITIONAL LOOP-POWERED "SINKING OUTPUT" CONNECTIONS
MODEL TT2XX-0600 OUTPUT/POWER WIRING
DC SUPPLY
(12–32V)
EARTH
GROUND
SHIELDED
TWISTED PAIR
4–20mA

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 11 -
http://www.acromag.com
[11 ]
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Output/Power
Connections...
In most installations, the loop power supply will be local to either the transmitter,
or local to the remote receiver. Common receiver devices include the input channel
of a Programmable Logic Controller (PLC), a Distributed Control System (DCS), or a
panel meter. Some receivers already provide excitation for the transmitter loop and
these are referred to as “sourcing” inputs. Other receivers that do not provide the
excitation are referred to as “sinking” inputs, and these will require that a separate
power supply connect within the loop. These types of receivers are depicted below.
WARNING: For compliance to applicable safety and performance standards, the
use of twisted pair output wiring is recommended. Failure to adhere to sound
wiring and grounding practices as instructed may compromise safety,
performance, and possibly damage the transmitter.
TIP –Ripple & Noise: Power supply ripple at 60Hz/120Hz is normally reduced at the
load by the transmitter, but additional filtering at the load can reduce this ripple
further. For large 60Hz supply ripple, connect an external 1uF or larger capacitor
directly across the load to reduce excessive ripple. For sensitive applications with
high-speed acquisition at the load, high frequency noise may be reduced
significantly by placing a 0.1uF capacitor directly across the load, as close to the load
as possible.
TIP –Inductive Loads: If the two-wire current loop includes a highly inductive load
(such as an I/P current-to-pressure transducer), this may reduce output stability. In
this case, place a 0.1uF capacitor directly across the inductive load and this will
typically cure the problem.
+
-
6
5
"SINKING OUTPUT" CONNECTIONS WITH
LOOP+
LOOP-
+
-
TWISTED PAIR
I
I
POWER LOCAL TO THE RECEIVER
The 24V DC Excitation is
Provided by the Card
+
RCV
DCS/PLC SINKING
24VDC
Two-Wire Output Connections to the Input Card of a Distributed Control
System or Programmable Logic Controller.
+
-
24VDC POWER SUPPLY
I
I
COMMON TWO-WIRE TRANSMITTER CONNECTION TO "SOURCING" AND "SINKING" INPUT RECEIVERS
+
-
INPUT CARD
-
+
RCV
+
-
P
DCS/PLC SOURCING
24VDC
INPUT CARD
+
-
OR
SOURCING INPUT RECEIVER SINKING INPUT RECEIVER
The 24V DC Excitation is Provided
by a Separate Power Supply
MODEL TT2XX-0600 OUTPUT/POWER WIRING
ANY MODEL TT2XX-0600
5 6
–+
87
C C
INPUT SIDE OUTPUT SIDE TOP VIEW
(OUTPUT SIDE)
TB3
(OUTPUT)
TB1
(INPUT)
TB2
(INPUT)
TB4
(COMMON)

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 12 -
http://www.acromag.com
[12 ]
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Output/Power
Connections...
This model includes two extra terminal connections at TB4 marked “C”, which
provide a convenient wiring point for a “sourcing” wiring variation as shown below.
Internally, these two terminals are connected in common with each other and do
not connect to the internal circuit. Use of these terminals in the wiring scheme
allows external power to be connected local to the transmitter and form a
“sourcing” output entity from this “sinking” output as shown.
Earth Ground Connections
The transmitter housing is plastic and does not require an earth ground connection,
except where the optional input cable shield is terminated on the transmitter. If the
transmitter is mounted in a metal enclosure, an earth ground wire connection to
the metal enclosure’s ground terminal (green screw) is usually required using
suitable wire per applicable codes. See the Output/Power Wiring Drawing for
Output/Power connections and note the traditional position of earth ground for the
two-wire output current loop. Earth ground is normally applied at the output loop
power minus terminal and in common with the loop load or loop receiver minus.
The Type II transmitter output terminals have a floating connection relative to earth
ground and their potential varies with the voltage drop in the load and connection
wire.
Respect the traditional position of earth ground in a two-wire current loop and
avoid inadvertent connections to earth ground at other points in the output
circuit, which would drive ground loops and negatively affect operation. The
input circuit is isolated and may additionally be earth grounded.
A USB isolator is recommended when configuring or calibrating a transmitter to
avoid the ground loop that occurs if the input sensor is also earth grounded (PC
USB ports are commonly earth grounded and make contact with both the USB
signal and shield ground which is held in common to the input circuit ground of
the transmitter).
R
I
I
LOAD
OPTIONAL COMMON CONNECTIONS
WITH LOCAL EXTERNAL 3-WIRE POWER
FORM A SOURCING OUTPUT RELATIVE
TO THE REMOTE SINKING LOAD.
6
5
–
+
I
I
I
I
8
7
C
OPTIONAL "SOURCING" OUTPUT CONNECTIONS
WITH POWER LOCAL TO TRANSMITTER
C
ANY MODEL TT2XX-0600
5 6
–+
87
C C
INPUT SIDE OUTPUT SIDE TOP VIEW
(OUTPUT SIDE)
TB3
(OUTPUT)
TB1
(INPUT)
TB2
(INPUT)
TB4
(COMMON)
MODEL TT2XX-0600 OPTIONAL
OUTPUT/POWER WIRING
I
REMOTE
RECEIVER/LOAD
TWISTED PAIR
LOCAL 24VDC
POWER SUPPLY
24VDC
LOOP
LOOP

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 13 -
http://www.acromag.com
[13 ]
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USB Connections
This transmitter is configured and calibrated via configuration software that runs on
Windows-based PCs connected to the transmitter via USB (Windows XP or later
version required). Refer to the following drawing to connect a PC to the transmitter
for the purpose of configuration and calibration using this software.
WARNING:
The intent of mating USB with this
transmitter is so that it can be
conveniently configured and
calibrated in a safe area, then
installed in the field which may be
in a hazardous area. Do not
attempt to connect a PC or laptop
to this transmitter while installed
in a hazardous area, as USB energy
levels could ignite explosive gases
or particles in the air.
•USB Signal Isolation is Required (See Below) –Acromag model USB-ISOLATOR
may be used to isolate the USB port, or optionally, another USB signal isolator
that supports USB Full Speed operation (12Mbps).
•Configuration Requires USB and Loop Power –This transmitter draws power
from both the current loop and from USB during setup.
IMPORTANT: USB logic signals to the transmitter are referenced to the potential of
the transmitter’s input ground. This ground is held in common with USB ground and
USB cable shield ground. The potential of the transmitter’s current output pin
(output minus) relative to earth ground will vary according to the load current and
load resistance (net IR drop). Without isolation, this IR drop would drive a potential
difference between the normally grounded current loop and the grounded USB
connection at the PC, causing a ground loop that would inhibit setup and
calibration, and may even damage the transmitter. This is why an isolated USB
connection is recommended. The use of an isolator can be avoided if a battery
powered laptop PC is used to connect to the transmitter, and the laptop has no
other earth ground connection, either directly or via a connected peripheral.
PERSONAL COMPUTER
RUNNING WINDOWS OS
1 METER USB CABLE
USB-A MALE
TO HOST USB PORT
HOST
USB
HOST USB SERIAL
PORT CONNECTOR
AT BACK OF PC
CONFIGURATION
SOFTWARE
ACROMAG
HOST PC RUNNING
USB-B MALE
DEVICE
CONNECT
PC
CONNECT
POWER RESET
CONNECTION
USB-A MALE
TT SERIES USB TRANSMITTER CONNECTIONS
(REQUIRED)
USED FOR CONFIGURATION AND CALIBRATION OF THE TRANSMITTER IN A SAFE OR ORDINARY LOCATION
CABLE Model 4001-113
MODEL NO. - USB-ISOLATOR
Model 4001-112
Refer to Configuration Software Kit, Model TTC-SIP, which includes:
1 ea, Model 4001-113 USB Cable
1 ea, Model 4001-112 USB Cable
1 ea, Model USB-ISOLATOR
1 ea, Configuration Software CDROM 5040-944
USB MiniB MALE
USB MiniB Socket
(Front-Panel of Module)
12 –32V
DC POWER
SUPPLY
TB3-5
TB3-6
MODEL TT2XX TRANSMITTER
NOTE: USER MUST MEASURE
OUTPUT/POWER SIGNAL TO
CALIBRATE OUTPUT
TB3
(OUTPUT)
TB4
(COM)
TB1
(INPUT)
TB2
(INPUT)
LOAD
!

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 14 -
http://www.acromag.com
[14 ]
https://www.acromag.com
CONFIGURATION SOFTWARE
Quick Overview –Android
This transmitter can be configured and calibrated via the Acromag Agility™
Config Tool App. This software can be downloaded free of charge from the
Google Play store at play.google.com. To connect to this transmitter, a USB
OTG (On-The-Go) cable (Acromag 5028-565) and USB A to Mini-B cable
(Acromag 4001-113) are required. This app is compatible with Android devices
using Ice Cream Sandwich (4.0) or later.
The initial connection screen of the app is shown at left. Once a device is
connected, the main portion of the app will launch. The screen is divided into
three tabs for this model. A short description of each tab follows.
Connection Screen Setup –DEVICE SELECT (First Connect to Unit Here)
•Select from connected transmitters by tapping the [Select Device] button.
This will bring up a list of attached devices. Select the desired device and
tap the Connect button to open the device.
•To view wiring diagrams of a particular transmitter, tap the [Wiring
Diagram] button and select the desired model. Swipe left or right to view
more diagrams. No connection is required to view the diagrams.
•Android requires user permission to access external hardware. If the
Device List displays “No Device Permission”, select this device and when
prompted to give permission to access the USB device, tap [OK].
Configuration Tab –CONFIGURE I/O
•Once connected, the app will automatically read your transmitter and
display its current configuration.
•Changing any option on this page will send the changes to the transmitter
instantly. The device status at the bottom of the page will report if the
changes were sent successfully.
Calibration Tab –(Calibrate the Input and/or Output if Needed)
•On screen instruction will guide the setup to properly calibrate the
transmitter. After completing instructions, tap the [Calibrate] button.
•The device status at the bottom of the page will report if the calibration
was sent successfully.
Diagnostic Center Tab –(Verify Input operation)
•Select the polling indicator by tapping the [Indicator] button.
•Start polling by tapping the [Start Polling] button.
Utility Page –(Reboot or Restore Settings)
•Tap the [Gear] in the Action bar to access the Utility Page.
•You can tap the [Restore/Reset Factory] utility buttons to get out of
trouble if you ever misconfigure or miscalibrate a transmitter.

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 15 -
http://www.acromag.com
[15 ]
https://www.acromag.com
Quick Overview –Windows
Click “Open” to connect to the TT239-0600
and the software will look similar to the
following:
This transmitter can be configured and calibrated via its configuration
software and a USB connection to a PC or laptop. The configuration
software is contained in a zip file that can be downloaded free of charge
from our web site at www.acromag.com. For this transmitter, download
the file named “9500459.zip”. If you do not yet have a user account, you
will need to create one before the download becomes accessible. The zip
file will extract to an executable file which installs software to the
“/Program Files/Acromag” directory on your computer. Note: You need
administrator privileges on the PC you wish to install this software. Once
installed, navigate to the “/Program Files/Acromag” directory and open
the correct software for your particular model. This software is also
included on a CDROM bundled with the Configuration Kit TTC-SIP (see
Accessories). For this transmitter, use the software named “TT239
Config.exe”.
The initial configuration software window for this model is shown at left.
Configuration information is divided across three pages as follows:
Communication Setup, I/O Config/Test, and Calibration.
Communication Setup (First Connect to Module Here)
Scan for connected transmitters and Open/Close communications
with them.
Display the Model, Serial Number, and Manufacturer of the
connected transmitter and report the status of communication.
I/O Config/Test (Configure and/or Test the Module Here)
Select the Threshold. Select Bipolar for zero crossing signals or
Unipolar for non-zero crossing signals.
Select the Measurement. Options are Frequency or Duty Cycle.
Select the Pull Up/Down depending on the input sensor type.
Enter the Cutoff Frequency. Inputs below the Cutoff Frequency are
measured as 0Hz.
Enter the Debounce time. The input must be steady for this length of
time before the transmitter will conduct a measurement.
Enter the number of Samples to Average. This controls the number of
samples included in the FIFO queue (first-in, first-out).
•Enter the Output Update. This controls the rate at which the output is
updated (sample window).
Enter the I/O Scaling. Specify the input frequencies to correspond to
Zero-Scale and Full-Scale.
Submit the configuration settings to the transmitter by clicking the
[Send I/O Config] button to write the settings to the non-volatile
EEPROM memory.

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 16 -
http://www.acromag.com
[16 ]
https://www.acromag.com
Quick Overview - Windows...
HELP:
You can press [F1] for Help on a selected
or highlighted field or control. You can
also click the [?] button in the upper-right
hand corner of the window and click to
point to a field or control to get a Help
message pertaining to the item you
pointed to.
I/O Test (Optional, Verify Transmitter Operation Here)
After making I/O configuration changes, use the I/O Test controls to verify
the transmitter’s operation. Click “Start Polling” to periodically read the
input channel and validate its operation. Click “Stop Polling” to stop
polling the input channel.
For detailed configuration and calibration procedures, see the Operation
Step-By-Step section of the Technical Reference of this manual.
Calibration (Calibrate the Output if Needed)
This transmitter has already been factory calibrated. If you encounter
excessive error, you can click the Calibration tab to display the Calibration
control page as shown at left.
For output zero-scale endpoint adjustment, click the [Zero-Scale] button
to open the zero-scale configuration popup. Use a current meter or digital
volt meter to accurately measure the transmitter output signal and enter
the measurement in the input field provided. Click the [Submit
Measurement] button to send the calibration to the transmitter.
For output full-scale endpoint adjustment, click the [Full-Scale] button to
open the full-scale configuration popup. Use a current meter or digital volt
meter to accurately measure the transmitter output current and enter the
measurement in the input field provided. Click the [Submit Measurement]
button to send the calibration to the transmitter.
Factory Settings (Use only in case of trouble or for sanitation purposes)
•Restore a transmitter to its original factory calibration
•Restore a transmitter to its initial factory configuration
You can click the [Restore Factory] buttons if you ever misconfigure or
miscalibrate a transmitter in such a way that its operation appears erratic.
Calibration Status (Bottom of Window)
The Calibration Status bar at the bottom of the window will display status
messages relative to calibration over USB.

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 17 -
http://www.acromag.com
[17 ]
https://www.acromag.com
TECHNICAL REFERENCE
OPERATION STEP-BY-STEP
Connections
This section will walk you through
the Connection–Configuration–
Calibration process step-by-step.
Before attempting to reconfigure or
recalibrate this transmitter, verify
the following electrical
connections:
Calibration Connections:
NOTE: When calibrating, the output meter and load resistor (for current output)
must be accurate beyond the transmitter specifications, or better than ±0.1%. As a
general rule, calibration equipment accuracy should be four times better than the
rated accuracy you are trying to achieve with this transmitter.
Connect Output: Connect an output load to the transmitter appropriate for either
current or voltage, as required by your application. You will need to measure the
output current or voltage accurately in order to calibrate the output of the
transmitter. You could connect a current meter in series with the load to read the
output current directly, or a digital volt meter in parallel with the load to measure
output voltage. Alternatively, you could simply connect a voltmeter across a
precision load resistor, and then accurately read the output current as a function of
the IR voltage drop produced in the resistor (recommended for current outputs).
Calibration & Configuration Connections:
Connect Output/Power: Refer to Output/Power Connection section and wire an
output current loop to the transmitter as illustrated. You will need to measure the
output current accurately in order to calibrate the transmitter. You can connect a
current meter in series in this loop to read the loop current directly (not
recommended). Alternatively, you could simply connect a voltmeter across a series
connected precision load resistor in the loop, and accurately read the output
current as a function of the IR voltage drop produced in this resistor
(recommended). In any case, be sure to power the loop with a voltage that is
minimally greater than the 12V required by the transmitter, plus the IR drop of the
wiring and terminals, plus the IR drop in the load. To computer the IR drop, be sure
to use a current level that considers the over-scale current (up to 24mA).
Loop Power Supply Voltage: Make sure your voltage level is at least 12V plus
0.020*load_resistance. Ideally, it should be great enough to drive the 24mA over-
range current into your load (i.e. up to 12V+ 0.024*Rload, assuming line drop is
negligible and the maximum possible over-range is considered). Always apply
power to the transmitter output loop even when connected to USB.
Connect to PC via USB: Refer to USB Connections section and connect the
transmitter to the PC using the USB isolator and cables provided in the
Configuration Kit TT-SIP.
Now that you have made your connections and applied power to your loop, you
can execute the “TT239 Config.exe”software to begin configuration of the
transmitter (software is compatible with XP or later versions of the Windows
operating system).
Connect Input
Connect Output
Connect Power
Connect
PC/USB
Configure I/O

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 18 -
http://www.acromag.com
[18 ]
https://www.acromag.com
Connections...
NOTE: You should already have power connected to the
transmitter.
After executing the Acromag Configuration software for this
transmitter, the window shown at left will appear, if you have
not already connected to the transmitter via USB (note fields
are blank under these conditions).
Connect your PC to the transmitter via USB, and the
transmitter’s model-serial information will appear in the device
field as shown in the second window at left.
If you happen to be connected to more than one transmitter via
a USB hub, you can use the device scroll field to select another
transmitter, using the serial information suffix of the model
number to discern one transmitter from another.
Select a transmitter from the drop down menu. When you click
on a transmitter name from the drop down menu, the software
will automatically attempt to open a connection with the
selected transmitter. If the software does not have an open
connection with the transmitter, click the [Open] button to
open a connection with the transmitter.
After opening a connection to a transmitter, the transmitter’s
Model, Serial Number, Manufacturer, and connection status will
be displayed as shown in the image on the left. In addition, the
Status field will indicate “Device opened successfully” as shown
in the image at left.

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 19 -
http://www.acromag.com
[19 ]
https://www.acromag.com
Configuration
At this point, you can click the “I/O Config/Test” tab to begin
configuring the transmitter, or to optionally test its operation. The
I/O Config/Test window is the image shown at left.
When you click the “I/O Config/Test” tab, the software retrieves the
transmitter’s current configuration and displays it similar to the
image shown at left.
If you are connected to a transmitter, the initial I/O Config page
represents the current configuration of the connected transmitter
before making changes. Otherwise, if you have loaded the
configuration from a saved a file, or if you have made changes to any
fields, you can click the [Get I/O Config] button to retrieve the
transmitter’s current configuration.
NOTE: If you make any changes to the selections indicated, the only
way to preserve your changes is to write them to the transmitter by
clicking the [Send I/O Config] button after completing your
selections, or save them to a file by opening the “File” menu in the
upper left-hand corner of the window and selecting “Save As…”.
Select the Threshold...
The Threshold should be selected based on the type of input signal
the transmitter is measuring. Select Bipolar when the input signal is
zero crossing. Select Unipolar when the input signal is non-zero
crossing. There are two levels of hysteresis available for both Bipolar
and Unipolar options. The hysteresis is listed in parenthesis.
Select the Measurement...
Select Frequency to measure the frequency of the input signal. Select
Duty Cycle to measure the duty cycle of the input signal.
NOTE: The maximum input frequency when Measurement is set to
Duty Cycle is 3KHz.
Select the Pull Up/Down...
Select Pull-Up to pull the +FINP terminal to +3VDC through 12.4KΩ.
Select Pull-Down to pull the +FINP terminal to the –FRTN terminal
through 1KΩ. Select Disabled to disconnect the internal resistors.
Refer to the example input connections in the Sensor Input
Connections section for common sensor configurations.
WARNING: Do not exceed 15VDC with the internal pull-up or pull-
down resistors enabled, or damage to the circuit will result. Limit
internal pull-up/pull-down resistor power to less than 0.25W.
Disable the Pull-up/Pull-down if the input to the transmitter is AC
mains voltage (120VRMS).

Model TT239-0600
2-Wire Isolated Frequency Transmitter w/USB
Acromag, Inc. Tel: [phone] - 20 -
http://www.acromag.com
[20 ]
https://www.acromag.com
Configuration...
HELP:
Press [F1] for Help on a selected or highlighted field
or control. Alternatively, click the [?] button in the
upper-right hand corner of the window and click a
field or control to receive a Help message pertaining
to the item pointed to.
Enter the Cutoff Frequency...
The Cutoff Frequency controls the minimum frequency the
transmitter will measure. When the frequency of the input signal
falls below the Cutoff Frequency, the transmitter will measure
0Hz.
NOTE: Once the Cutoff Frequency is reached, the transmitter will
retain the last measurement and will wait a specified duration
before measuring 0Hz. This duration is equal to the period of the
Cutoff Frequency. If no input is captured within this duration, the
transmitter will measure 0Hz. For example, a 0.25Hz Cutoff
Frequency would configure the transmitter to wait 4 seconds
before measuring 0Hz.
Enter the number of Samples to Average...
This transmitter captures and saves samples in a FIFO (first-in,
first-out) queue. The number of samples in this queue is equal to
the number of Samples to Average. The FIFO queue is used to
calculate a running average. Samples are added to the FIFO queue
at the Output Update rate.
NOTE: It is often useful when measuring a gear using a magnetic
pickup to set the number of Samples to Average equal to the
number of teeth on the gear. Using this technique, variations in
gear teeth spacing will be averaged over one revolution, yielding a
constant frequency measurement.
Enter the Debounce...
The Debounce time controls the length of time the transmitter will
wait until the input signal is steady (not crossing threshold) before
measuring the input signal.
NOTE: Debounce is useful for filtering out temporary signal
glitches such as those generated by contact relays. For best
results, set the Debounce to twice the expected duration of
contact bounce.
Enter the Output Update...
The Output Update sets the rate at which the output will be
updated with the scaled input measurement. The transmitter will
always update the output at this rate unless the Output Update
Override is selected when the input falls below the Cutoff
Frequency.
NOTE: The Output Update determines the time available for the
transmitter to capture the input signal. Therefore, the accuracy of
the calculated measurement will decrease as the Output Update
becomes faster. Using a slower Output Update allows the
transmitter to capture more of the input signal and calculate a
more accurate measurement.