Acromag microBlox Series User manual

microBlox® Series, uBTA-P-1MR and uBTA-P-1SR
Single Channel Transmitter/Alarm Carriers for Bluetooth®
Wireless Technology microBlox® Input Modules
USER’S MANUAL
ACROMAG INCORPORATED Tel: [phone]
30765 South Wixom Road Fax: [phone]
Wixom, MI 48393-2417 U.S.A. email: [email protected]
Copyright 2018, Acromag, Inc., Printed in the USA.
Data and specifications are subject to change without notice. 8501080B
retired

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 2 -
http://www.acromag.com
- 2 -
https://www.acromag.com
Table of Contents
GETTING STARTED
DESCRIPTION.......................................................................................................3
Key Features........................................................................................................................4
Application ..........................................................................................................................5
Mechanical Dimensions .......................................................................................................5
DIN RAIL MOUNTING & REMOVAL................................................................6
ELECTRICAL CONNECTIONS ............................................................................ 7
Isolation Barriers .................................................................................................................7
How to Enable or Disable CJC and BLE Linking ......................................................................8
Input Connections................................................................................................................8
Power Connections..............................................................................................................9
Earth Ground Connections .................................................................................................10
Transmitter Analog Output Connections ............................................................................10
Interposing Relay Connections ...........................................................................................11
Add Contact Protection When Switching Inductive Loads ...................................................12
Optional Output Current Trim Adjustment .........................................................................12
CONFIGURATION SOFTWARE...................................................................... 13
Quick Overview .................................................................................................................13
TECHNICAL REFERENCE ................................................................................ 14
Block Diagram ...................................................................................................................14
How It Works.....................................................................................................................15
Alarm Operation................................................................................................................15
TROUBLESHOOTING....................................................................................... 16
Diagnostics Table...............................................................................................................16
Service & Repair Assistance ...............................................................................................17
SPECIFICATIONS .............................................................................................. 18
Model Number ..................................................................................................................18
Analog (Field) Input ...........................................................................................................18
Alarm Relay Outputs..........................................................................................................19
Transmitter Outputs ..........................................................................................................20
Controls.............................................................................................................................20
Alarm Configuration ..........................................................................................................21
Power................................................................................................................................21
Enclosure & Physical ..........................................................................................................22
Environmental ...................................................................................................................23
Agency Approvals ..............................................................................................................24
Reliability Prediction..........................................................................................................24
REVISION HISTORY ......................................................................................... 25

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 3 -
http://www.acromag.com
- 3 -
https://www.acromag.com
All trademarks are the property of their respective owners.
IMPORTANT SAFETY CONSIDERATIONS
You must consider the possible negative effects of power, wiring, component, sensor, or software failure in the design of
any type of control or monitoring system. This is very important where property loss or human life is involved. It is
important that you perform satisfactory overall system design and it is agreed between you and Acromag, that this is your
responsibility.
The information of this manual may change without notice. Acromag 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 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.
GETTING STARTED
DESCRIPTION
Symbols on equipment:
Means “Refer to User’s Manual
(this document) for additional
information”.
uBTA-P-1MR A combination Transmitter/Alarm Carrier for a single uB input
module with dual SPDT mechanical relays.
uBTA-P-1SR A combination Transmitter/Alarm Carrier for a single uB input
module with dual SPST solid-state relays.
These carriers are used with Bluetooth wireless technology versions of Acromag
microBlox® modules to build powerful alarms and/or voltage/current transmitters
(input module not included, see below for compatible models). Modules are
isolated input-to-output and these carriers add power isolation and alarm
functionality to the microBlox® module with two relays provided. A high or low
limit, or a window alarm may be configured for each relay via Bluetooth wireless
technology communication from your Android or iOS smartphone or tablet.
uB Models Supported (10/11 Bluetooth Wireless Technology Models Plug-In)
Input Model
Module Input Limits
Module Output
uB31-B/uB41-B
±1V to ±60V
0-5V
uB30-B/uB40-B
±10mV to ±100mV
uB32-B/uB42-B
4-20mA/0-11.17mA DC
uB34-B/uB35-B
2/3/4-Wire Pt RTD
uB37-B/uB47-B
J/K/T/R/S Thermocouple
This microBlox® module carrier adds wide-input isolated power (including
redundant power capability), cold junction compensation for thermocouple
modules, dual isolated alarm relays, plus simultaneous voltage and current output,
and LED indication for Bluetooth wireless technology link, power, and each relay.
The microBlox® (uB) modules offer a flexible space-saving solution for isolating,
monitoring, and driving industrial process signals to interface with modern data
acquisition equipment. A single uB input module plugs into this carrier to build a
dual output alarm and a voltage/current transmitter. Different input types can be
plugged into this carrier to form different alarm types, normally without
recalibration. Like all microBlox® components, these carriers have high immunity to
harsh industrial environments, are CE and ATEX / IECEx compliant, and UL approved
for installation in Class I, Division II hazardous locations.
!

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 4 -
http://www.acromag.com
- 4 -
https://www.acromag.com
Key Features
•Field-pluggable microBlox input modules allow you to change input types on
this carrier, usually without recalibration. Modules are over-molded and
RoHS compliant, and offer superior shock, moisture, and dust protection.
•Channel has dual alarm outputs that is configured using Bluetooth wireless
technology. Two carrier models are available—one with mechanical relays
(5A/250VAC/30VDC), one with solid-state relays (1A/200Vpk AC/DC).
•Free Bluetooth wireless technology Configuration App with Android™ or iOS™
support, no additional software required.
•16-character Password Protection for Bluetooth wireless technology access.
•Designed, hardened, and thoroughly tested for use in Harsh Environments.
•CE Approved & UL/cUL Class I, Division 2 Approvals.
•FCC Conformity Class B.
•ATEX / IECEx Certified for Explosive Atmospheres.
II 3 G Ex nA nC* IIC T4 Gc -40oC ≤Ta ≤+75oC (* for Model uBTA-P-MR)
DEMKO 18 ATEX 2086X and IECEx UL 18.0092X
•Designed and manufactured for High Quality/High Reliability with AS9100
(Aerospace Quality)/ISO9001.
•Carrier includes both 0-5V/1-5V and 0-20mA/4-20mA transmitter outputs.
•Better than ±0.1% alarm and transmitter output accuracy.
•Wide ambient temperature operation from -40°C to +75°C.
•All I/O and power ports are transient protected.
•Wide-range isolated DC power input from 6-32V.
•LED indicators for Bluetooth wireless technology link, power, and each relay
aide trouble-shooting.
•High 1500VAC Safety Isolation between field input, transmitter output, relay
contacts (including between contacts), and power. Individually isolated for
common-mode voltages up to 250VAC, or 354V DC off DC power ground, on a
continuous basis (will withstand 1500VAC HIPOT/dielectric strength test for
one minute without breakdown). This complies with test requirements of
ANSI/ISA-82.01-1988 for voltage rating specified.
•Shock (25G) and Vibration Immunity (4G) - Conforms to: IEC 60068-2-6: 10-
500 Hz, 5G, 2 Hours/axis, for sinusoidal vibration; IEC 60068-2-64: 10-500 Hz,
5G-rms, 2 Hours/axis, for random vibration, and IEC 60068-2-27: 30G, 11ms
half-sine, 18 shocks at 6 orientations and 50G, 3ms half-sine, 18 shocks at 6
orientations, for mechanical shock.
•EMC (Electromagnetic Compatibility) –Min Immunity per BS EN 61000-6-1
(2007); CE marked, per EMC Directive 2014/30/EU. Electrostatic Discharge
Immunity (ESD), per IEC 61000-4-2; Radiated Field Immunity (RFI), per IEC
61000-4-3 and ETSI EN 301 489; Electrical Fast Transient Immunity (EFT), per
IEC 61000-4-4; Surge Immunity, per IEC 61000-4-5. Conducted RF Immunity
(CRFI), per IEC 61000-4-6.
•Emissions - This is a Class B Product with Emissions per BS EN 61000-6-3
(2007+A1:2011) and Spurious Emissions per ETSI EN 300 328. Enclosure Port,
per CISPR 16. Low Voltage AC Mains Port, per CISPR 16.
•Installation Category - Suitable for installation in a Pollution Degree 2
environment with an Installation Category (Over-voltage Category) II rating
per IEC 1010-1 (1990).

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 5 -
http://www.acromag.com
- 5 -
https://www.acromag.com
Application
This carrier allows a single Bluetooth wireless technology enabled microBlox® input
module to be plugged in as shown at left and mounted on T-type DIN rail. The unit
can function as an alarm, a voltage transmitter, and a current transmitter. This
carrier supports ten of eleven available uBxx-B input models with Bluetooth wireless
technology (it does not support the uB45-B frequency model for alarm functionality,
but will accept the uB45 for transmitter operation). The carrier provides isolated
Host power to the module, and separately isolated relay contacts (dual FORM C
mechanical or dual FORM A solid-state relay contacts). The carrier also provides a
wired interface for the module’s own 0-5V/1-5V output and adds a tandem 0-
20mA/4-20mA current output. Alarm levels are configured in the captive Bluetooth
wireless technology module via a smartphone or tablet using our free mobile app.
Note: For alarm operation, the plugged-in Bluetooth wireless technology input
module must be configured for the alarm carrier with 0-5V output, and have any
input sub-range scaled to 0-5V output. However, for transmitter-only operation, it
will additionally support any uB input model that has 0-5V output, and will provide
isolated power to the module, and drive separate transmitter outputs of 0-5V/5mA,
or 0-20mA/0-550Ω.
Mechanical Dimensions
Carriers are mounted to 35mm
“T” type DIN rail (35mm, type
EN50022).
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.

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 6 -
http://www.acromag.com
- 6 -
https://www.acromag.com
DIN Rail Mounting & Removal
Refer to the following figure for attaching and removing the carrier from the DIN rail.
A plastic spring DIN clip is located on the bottom side at each end. You can pry the
DIN clip back with a screwdriver along the bottom to release the unit and lift it from
the rail.
To attach the carrier to T-type DIN rail, position the top groove of the DIN Clip along
the rail and push the bottom inward to snap it into place on the DIN rail.
To remove it from the DIN rail, first disconnect any I/O and relay wiring from its
terminals. While holding the carrier secure, insert a screwdriver along the bottom
edge of the carrier into the loop of the DIN rail clip and use it as a lever to force the
DIN rail clip down, while pulling the bottom of the carrier outward until it disengages
from the rail. Then tilt the carrier upward and lift it from the rail.

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
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.
Carrier terminals can accommodate 16–26 AWG (1.31–0.13mm2) solid or stranded wire with a
minimum temperature rating of 85oC. Input wiring may be shielded or unshielded type
(twisted pair or shielded twisted pair input wiring is recommended). Strip back wire insulation
0.25-inch on each lead and insert the wire ends into the cage-clamp terminal block connector.
Use a screwdriver to tighten the screw by turning it clockwise to secure the wire (use 0.22-
0.25nM torque). Since common mode voltages can exist on I/O wiring, adequate wire
insulation should be used and proper wiring practices followed. As a rule, input wires are
normally separated from power, output, and relay wiring for safety and isolation support, as
well as for low noise pickup.
Isolation Barriers
!

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 8 -
http://www.acromag.com
- 8 -
https://www.acromag.com
How to Enable or Disable CJC and BLE Linking
DIP switches are used on this carrier to separately enable BLE
linking and CJC connection, and act identical to their same settings
as on standard uB back-panels.
MODULE
CJC SWITCH SETTING
Refer to table and
determine if the CJC
must be enabled for
your model and set CJC
ON or OFF as required
uB30 & uB40
Set CJC to ON
uB31 & uB41
Set CJC ON or OFF
uB32 & uB42
Set CJC ON or OFF
uB34 & uB35
Set CJC to OFF
uB37 & uB47
Set CJC to ON
To setup and configure a module for use on this carrier and for
alarm reconfiguration using Bluetooth wireless technology, you
must enable linking for the channel. Setting the channel BLE switch
ON allows you to link to the installed uB module from your
smartphone or tablet (set it to OFF to block access). Refer to the
figure at left.
Input Connections
A single microBlox input module plugs into sockets of this carrier and is retained by a
spring-loaded clip. Field input connections are wired to carrier terminals in the same
fashion as input connections wired to the module mounted on a standard uB back-panel.
Please refer to your specific uB module manual (see below) for information on making
input connections, CJC connections, or enabling Bluetooth wireless technology linking.
REFERENCE
DESCRIPTION
8501-037
uB31 & uB41 Voltage Input User Manual
8501-040
uB30 & uB40 mV Input User Manual
8501-041
uB32 DC Current Input User Manual
8501-042
uB42 DC Current Input w/2-Wire Excitation User Manual
8501-043
uB34 2/3-Wire & uB35 4-Wire RTD Input User's Manual
8501-044
Introduction to Agility Configuration Tool for microBlox®
8501-047
uB37 & uB47 TC Input User Manual
8501-050
uB04/uB08/uB16 Back-Panel User Manual
TB1 at the bottom edge (input side) of this carrier carries the field INPUT ± (TB1 lower
row), and EXC ± (TB1 back row) connections. Refer to your module instructions to make
wired connections and observe proper polarity. Be sure to ground your input as shown in
your module’s respective connection drawing (refer to your module manual instructions).

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 9 -
http://www.acromag.com
- 9 -
https://www.acromag.com
Power Connections
Input power is safety isolated (250VAC) and reverse polarity protected (to 60V) by the
carrier. Connect a DC power supply from 6-32V at TB3 as shown in the drawing below.
Observe proper polarity. For supply connections, use 14 AWG wire rated for at least 85°C.
Do not exceed 36V DC peak.
Note: Current draw varies with voltage level and your supply should be able to provide
twice the current draw of your application to support potential power-on inrush current.
Likewise, we recommend that your supply connection be fused above 2.5A with a surge-
tolerant fuse, or damage to the power circuit could result for a sustained surge that drives
the built-in transient protection to clamp during an over-voltage condition.
IMPORTANT: It is recommended that supplies capable of delivering more than 2.5A of power to the carrier be fused with
a surge tolerant fuse. Unit includes a transient voltage suppressor clamp across its power input that will clamp
overvoltage conditions. A sustained over-voltage condition from an unfused power supply could drive excessive fault
current flow that can damage the carrier if allowed to exceed 3A.

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 10 -
http://www.acromag.com
- 10 -
https://www.acromag.com
Earth Ground Connections
The unit housing is plastic and does not require an earth ground connection
to itself. If mounted in a metal housing, an earth ground wire connection to
that housing’s ground terminal (green screw) is usually required using suitable
wire per applicable codes. Isolated circuits wired to this carrier are normally
earth grounded. Power connections usually earth ground at DC- to the unit.
Output connections apply earth ground at the transmitter output common
terminal Circuits wired to analog inputs should be earth grounded as
reflected in their connection diagram for the specific model. Ground
connections noted are recommended for best results and help protect the
unit and its isolated circuitry by giving it a low impedance path to ground for
shunting potentially destructive transient energy away from sensitive module
circuitry. Refer to the Electrical Connection Drawings for recommended input,
transmitter output, and power ground connections.
Transmitter Analog Output Connections
This carrier provides both 0-5V and 0-20mA transmitter outputs at TB4. Note
that these outputs share common and an earth ground connection is normally
made at the output common terminal as shown below.
Note –For 4-20mA Transmitter Output: The carrier normally requires input
modules scale their input range to 0-5V for use on this carrier to drive 0-20mA
at the carrier’s current output. If your application requires a 4-20mA current
output, you may use the I/O Scaling function of the Agility mobile app to scale
your module input range to 1-5V output instead of 0-5V, which will produce 4-
20mA from the alarm carrier (note the tandem voltage output of the carrier
also becomes 1-5V, not 0-5V). The Agility App can also scale this for you if you
select 4-20mA as an output type option under the uBTA Alarm tab.

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 11 -
http://www.acromag.com
- 11 -
https://www.acromag.com
Interposing Relay Connections
If you need to raise your control capability and drive larger loads with load
voltages and/or current demands that are greater than the rated capacity of
this unit’s mechanical or solid-state outputs, then you may choose to drive a
higher capacity interposing relay that connects to the load, in similar fashion
to the following figures (be sure to also include the inductive load protection
at your load as shown):
IMPORTANT: Because the solid-state relay of the uBTA-P-1SR model is both AC and DC rated, it is not possible
to also include contact protection built-into the relay output of this device (a diode is normally used for DC,
and a MOV for AC). Required protection is always best placed at the load as shown above. You should always
include this protection in your installation when switching inductive loads, or damage to the relay could occur.

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 12 -
http://www.acromag.com
- 12 -
https://www.acromag.com
Add Contact Protection When Switching Inductive Loads
If your alarm relays are controlling inductive loads or driving interposing relay coils,
then it is recommended that you add additional protection local to the inductive
load or interposing relay as shown in the above figures (these carriers do not
already include this protection). This protection typically takes the form of a diode
placed in reverse of normal current flow through the load, but right at the load
terminals (see this protection illustrated in the prior figure for driving an interposing
relay where it is placed across the terminals of the interposing relay coil). When
choosing this protection, it is recommended that you select a diode with an inverse
voltage rating at least twice the load voltage, and a continuous current rating
greater than your load current. The purpose of this diode is to squelch the high
reverse voltage that develops in the coil when current through the coil is switched
OFF. By placing it local to the load, it prevents this switching transient from being
distributed along the wiring to the unit which could also inductively couple noise
into adjacent circuits and will raise emissions. It also helps protect and extend the
life of the relay contacts or the switch controlling the load. For more information on
this protection, please refer to Acromag Application Note 8501-088 available for
download at www.acromag.com.
Optional Output Current Trim Adjustment
IMPORTANT: This adjustment has
already been done at the factory
using precision instruments and
should not be attempted in the
field unless fine accuracy can be
assured (precision load, DVM,
input source, etc.). Otherwise, you
may make the current output less
accurate.
This carrier includes both an analog voltage (0-5V) and current output (0-20mA) for
the channel. The voltage output is driven directly via the plug-in uB module, while
the carrier includes voltage to current conversion on-board to also drive 0-20mA
from the 0-5V provided by the module. Normally, current output will not require a
trim adjustment, except perhaps to precisely set the output to tighter accuracy or to
correct for long-term component aging. A 15-turn mechanical trim pot is included
in the output circuit to fine tune the full-scale 20mA output with 5V full-scale from
the module. It provides roughly ±0.08mA of adjustment around 20mA and is
accessible with a small screw-driver along the top (output) edge of the carrier near
the output terminals as shown in the drawing below. If your full-scale current
output is not within ±0.1% of 20mA, you can use this trim pot to make fine
adjustments to output current at full-scale (with 5V full-scale output from module).
Refer to the figure below to locate this adjustment screw. Turn the pot screw
clockwise to increase the output current at full-scale, and counter-clockwise to
reduce the full-scale current. To monitor the output current, it is best to use a
precision load resistor of greater accuracy than ±0.1%, and measure output current
as a function of the voltage drop across this resistor. For example, a 250Ω precision
resistor will output 5V with precisely 20mA through it.
Note that you can optionally make this adjustment with power applied to the
carrier and without plugging in a module by simply connecting a precision 5V full-
scale signal to the channel’s voltage output terminals (without a module plugged-
into this carrier), then adjusting the corresponding current output to precisely 20mA
by adjusting this pot as required. With a precision 250Ω load across the current
output terminals, you would adjust this pot until you read precisely 5V±5mV on a
DVM placed across the load resistor. Of course, setting the full-scale output this
way would not additionally compensate for any potential module offset of up to
±0.05% or ±2.5mV between different calibrated modules plugged into the carrier.

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 13 -
http://www.acromag.com
- 13 -
https://www.acromag.com
CONFIGURATION SOFTWARE
The alarm functionality of the carrier is setup inside the Bluetooth wireless technology-enabled module that is plugged
into the carrier channel. You may configure alarm operation via our Agility mobile app and a Bluetooth wireless
technology link to your Android or iOS smartphone or tablet. The Agility software can be downloaded free of charge from
our web site at www.acromag.com.
Quick Overview
The screen at left is the uBTA Alarm configuration
screen of the Agility mobile app. To configure a uB
input module for installation in the alarm carrier,
select the uBTA Alarm tab and drag the “Alarm
Carrier Attached” switch right to ON as shown. Scroll
down the page to complete the Alarm configuration.
This carrier provides two independent alarm relays
for the input module and one or both relays may be
configured as either a high, low, or window alarm,
each with its own dead-band control using the
screen at left (scroll down). You can set limits for
each relay and/or specify a Reverse Acting alarm if
you want fail-safe alarm action (failsafe refers to
matching the alarm state of the contacts to the
power-off state). Note that a window alarm may be
configured for either relay and would trip for any
input level outside the window defined by the high
and low values specified for the relay (see Alarm
operation on page 15). Orange Relay LED’s on the
unit indicate the relay energized condition.
For complete information on Agility, please refer to
its instruction manual 8501-044, available for
download from our web site at www.acromag.com.

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 14 -
http://www.acromag.com
- 14 -
https://www.acromag.com
TECHNICAL REFERENCE
Block Diagram

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 15 -
http://www.acromag.com
- 15 -
https://www.acromag.com
How It Works
Key Points of Operation
- Module plugs in and is available
for current, voltage, RTD, and
temperature input.
- Carriers include dual mechanical
or solid-state alarm contacts.
-Carriers also drive voltage and
current transmitter outputs.
- All I/O uses 16-bit A/D and D/A
conversion.
-Isolated 6-32V DC Powered.
-Input, Output, Power, and each
Relay are isolated from each
other.
A microBlox® input module is captively-plugged into this carrier’s socket. The
carrier drives isolated 5V power to the module from an isolated flyback converter
on-board that operates from 6-32V. The carrier receives a 0-5V output signal from
the module which is isolated from and proportional to the module’s field input
signal. A local microcontroller on the carrier handles the alarm functionality of the
carrier. It retrieves alarm configuration information from the module via its isolated
serial bus. Alarm configuration parameters are set inside the module via a
Bluetooth wireless technology link to the module from a smartphone or tablet using
the Acromag Agility mobile app. The carrier includes separate analog output
terminals for module output voltage (0-5V/5mA), and locally derived current output
(0-20mA/550Ω). Each carrier model includes two FORM C (SPDT) mechanical relays,
or two FORM A (SPST) solid-state relays. A 15-turn mechanical pot on the carrier
allows fine adjustment of its current output for long-term maintenance purposes or
to correct for circuit aging. Refer to the block diagram above to gain a better
understanding of how this carrier works.
Alarm Operation
This product supports dual limit alarms or dual window alarms. Refer to the
following figures to understand how the limit and window alarms operate:

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 16 -
http://www.acromag.com
- 16 -
https://www.acromag.com
TROUBLESHOOTING
Diagnostics Table
Before attempting repair or
replacement of this carrier, be sure
that all installation and
configuration procedures have
been followed and that the carrier
is wired properly. Verify that 6-
32V power is applied to the carrier.
Verify that any input module
plugged into this carrier is also
operating properly.
If you still have a problem after
checking your power, wiring, and
module, and after reviewing this
information, or if other evidence
points to an unknown problem
with the carrier, an effective and
convenient fault diagnosis method
is to exchange the questionable
carrier or carrier module with a
known good unit.
Acromag’s Application Engineers
can provide further technical
assistance if required. Repair
services are also available from
Acromag.
POSSIBLE CAUSE
POSSIBLE FIX
Green RUN LED of Carrier Channel does not light…
Is Power ON at the Carrier?
Check carrier power. Is Green PWR LED ON
at the channel (a module must be plugged in
as the LED is powered by the module)?
The plug-in Module’s +3.3V rail
drives this LED and has failed,
or the carriers 5V power to the
module has failed.
Check power to the carrier which drives 5V
power to the module. The green LED is
sourced by the module’s 3.3V rail. Check if
the module is bad by plugging-in a known
good module and/or swapping channels.
Return failed modules for repair or
replacement. If the module is good, the
carrier’s power converter may be bad and
you can return it for repair or replacement.
Cannot Communicate with Module using Bluetooth wireless technology…
Blue BLE LED of Carrier Channel does not light…
Is the BLE DIP switch for the
channel set ON to enable
Bluetooth wireless technology
at the module?
Check the BLE DIP switch setting. Set ON to
turn the blue BLE LED ON and allow you to
link to the plugged-in module using the
Agility mobile app to reconfigure its alarm.
Unit Fails to Start-up or Initialize…
Carrier input power voltage is
below 6V, or the input supply
has current-limited below twice
the plug-in module current
draw and shut down.
Check your input power voltage and capacity
and make sure that it is at least 6V and of
sufficient current capacity (select a current
capacity 2x max current draw of your
application).
Input Polarity is Wrong…
Are your input terminals
reversed?
Check your input (field) wiring and observe
proper polarity. Current is input and voltage
is positive at the IN+ terminal. Current is
returned and voltage is negative at IN-.
Your uB Module Does Not Appear to Work in This Carrier
Is your module a Model
uB45-B?
The uB45-B frequency input model is not
compatible with this carrier for alarm
function, but permissible for transmitter
functionality.
Is your module Bluetooth
wireless technology-enabled?
Only uBxx-B models with Bluetooth wireless
technology may be used in this alarm carrier.
Optionally, for transmitter-only operation,
fixed range uB models with 0-5V outputs
may be used to convert the module output
voltage to current.
Alarm Contacts are “Chattering” or Alarm LED is blinking...
Have you applied dead-band
correctly?
Increase the alarm dead-band setting (Refer
to Alarm Operation on Page 15 to see how
dead-band can combat chatter).

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 17 -
http://www.acromag.com
- 17 -
https://www.acromag.com
TROUBLESHOOTING
Diagnostics Table
POSSIBLE CAUSE
POSSIBLE FIX
Output Signal Appears Noisy or Unstable...
Is the uB input module fully
inserted into the carrier socket?
Check that the module is fully plugged into
its socket. Note that uB45-B module is not
compatible with this carrier for alarms, but
permissible for transmitter functionality.
Have you grounded your input
signal? Ungrounded I/O
requires earth ground
connection as noted in the
module specifications.
Earth ground keeps isolated signals from
floating and provides a safe shunt path for
destructive transient energy. If your input
source is not already earth grounded, then
refer to its connection diagram and apply
earth ground as noted (inputs typically tie
earth to the IN- terminal, see module wiring
specific to your model). Transmitter outputs
are normally grounded at the output
common terminal.
Voltage Output is noisy
The voltage output of this carrier is driven
directly by the plug-in module. If noisy, the
field input signal may be floating or is not
earth grounded, or perhaps the output is not
grounded.
Check CJC Setting
Refer to your module specifications and
determine the required CJC status for your
model. Enable or disable CJC as required for
your module by setting the channel CJC DIP
switch accordingly.
Voltage Output is Over-Loaded
The 0-5V output can only drive up to 5mA
into loads greater than or equal 1KΩ.
Current Output cannot drive
full-scale current of 20mA.
Is your red fault LED ON?
Your output load resistance may be greater
than 550Ω. If load resistance is correctly
550Ω or less, then the carrier’s 14.5V rail
may have failed or has fallen out of
regulation and the carrier can be returned
for repair or replacement.
Service & Repair Assistance
Plug-in modules are encapsulated and cannot normally be repaired, except for
possible reconfiguration and factory reprogramming. The carrier itself
contains solid-state components and requires no maintenance, except perhaps
for periodic cleaning. Additionally, the carrier plastic is not meant to be
snapped apart and requires a special tool to do so. It is recommended that a
non-functioning carrier be returned to Acromag for repair or replacement.
Acromag has automated test equipment that thoroughly checks and calibrates
the performance of each unit, and can restore or update firmware if needed.
Please refer to Acromag’s Service Policy and Warranty Bulletins, or contact
Acromag for complete details on how to obtain repair or replacement.

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 18 -
http://www.acromag.com
- 18 -
https://www.acromag.com
SPECIFICATIONS
Model Number
uBTA-P-1MR: Trx/Alm w/two
Mechanical Relays.
uBTA-P-1SR: Trx/Alm
w/two Solid-State Relays.
These carriers are normally DIN-Rail mounted, and contain one microBlox®
module channel to provide optional alarm and transmitter functionality to a
Bluetooth wireless technology-enabled input module of the microBlox® I/O
family. Refer to the uBTA-P-2x models for a dual-channel version of this same
product.
The model “uB” prefix denotes this as a member of the popular Acromag
microBlox® family, while “TA” denotes the Transmitter/Alarm function, its “-P”
suffix denotes a Panel type carrier, the trailing “-1” suffix denotes a single
microBlox® channel, while “MR” denotes Mechanical Relay output (“SR” denotes
Solid-state Relay output). Both versions of this carrier are DC powered and
include CE & UL/cUL Class I, Division 2 Approvals.
Models are normally mounted on standard 35mm “T” Type DIN rail.The
configuration of the alarm functionality for a module on this carrier will require
an Android or iOS Bluetooth connection from your smartphone or tablet running
our free Agility Wireless App linked to the Bluetooth module plugged into the
carrier channel (linking for the carrier channel must also be enabled).
Analog (Field) Input
The input to this carrier is to the
uB input module plugged into it.
Refer to your module’s instructions
for detailed input and connection
specifications.
Transmitter voltage and current output is located at TB4.
Accuracy: Better than 0.05% of span typical relative to the installed module
plus an additional 0.05% of span relative to this carrier, for a net combined
accuracy of ±0.1% of span. This includes the effects of repeatability, terminal
point conformity, and linearization, but does not include sensor error.
Input (field) specifications are specific the microBlox® input module plugged into
this carrier. Refer to your module instructions for detailed field connections. The
following uB input models are compatible with this alarm carrier (the uB45-B
frequency model is not compatible with this carrier for alarm functions, but
permissible for transmitter functionality):
uB Plug-In Input Models That May Utilize this Alarm Carrier
Model
Nominal Module Input
Module Output
uB31-B/uB41-B
±1V to ±60V
0-5V
uB30-B/uB40-B
±10mV to ±100mV
uB32-B/uB42-B
4-20mA/0-11.17mA DC
uB34-B/uB35-B
2/3/4-Wire Pt RTD
uB37-B/uB47-B
J/K/T/R/S Thermocouple
The uB module must be configured for its 0-5V output or have any input
subrange scaled to a 0-5V output when used in this carrier. For alarm
functionality, only Bluetooth wireless technology enabled uB models can be used,
as wireless reconfiguration is required. For transmitter-only functionality, any uB
models with a 0-5V/1-5V output signal may be used (52 possible variations).
Module field inputs, carrier power, and carrier transmitter outputs must be wired
and configured for its I/O type and range for use on this carrier (see Electrical
Connections section for details).
I/O Cable Length: For rated performance, I/O port interface cables should not
exceed 30m in length.

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 19 -
http://www.acromag.com
- 19 -
https://www.acromag.com
Alarm Relay Outputs
Mechanical Relay Model
(-1MR Suffix Model)
This model contains two
independent electromechanical
relays. Each relay may have its
own set-point, dead-band, and
reverse acting status set. A High
or Low limit or a window Alarm
may be configured for each relay.
Type: Dual 1 FORM C (Two SPDT, Normally Open and Normally Closed contacts).
Ratings: 5A, 250VAC/30VDC, no load deration required over temperature.
Minimum Switching Load: 100mA, 5VDC.
Electrical Life: 50x103operations minimum, N.O. contact; 30x103 operations
minimum, N.C. contact at 5A, 250VAC/30VDC resistive.
Mechanical Life: 10x106operations minimum.
Contact Material: Silver-tin oxide (AgSnO2).
Dielectric Strength: Between open contacts: 1000VACrms, 50-60Hz, 1 minute,
10mA detection current; Between coil and contacts: 4000VAC, 50-60Hz, 1 minute,
10mA detection current.
Solid-State Relay Model
(-1SR Suffix Model)
This model contains two
independent solid-state relay
contacts. Each relay may have its
own set-point, dead-band, and
reverse acting status set. A High
or Low limit or a window Alarm
may be configured for each relay.
Both uBTA-P-1x Models
Type: Dual 1 FORM A (Two SPST, Normally Open contacts).
Ratings: Solid-state relays are AC and DC rated for up to 1A and 200Vpk at 25°C.
Due to greater temperature inside the instrument enclosure, reduce the maximum
relay load current above 10°C ambient according to the equation:
Load_Current = 1.08A-(Ambient°C)*(0.42/50), up to 75°C maximum ambient.
IMPORTANT: This solid-state output is AC and DC rated. As such, it does not
include any switch protection for inductive loads—You must add protection for
inductive loads or damage to this output switch could result (see Add Contact
Protection when Switching Inductive Loads).
Contact Resistance: 0.7Ω typical, 1.1Ω maximum.
Off-State Leakage Current: 10uA maximum.
Relay Response Time: Relay contacts will switch within 15ms (8ms typical) for an
input step change from 10% of span on one side of an alarm level to 5% of span on
the other side of the alarm level. Your relay response time will vary with your input
module’s bandwidth/response time. For 1KHz wide-bandwidth modules, this carrier
will track a sinusoidal peak alarm up to 75Hz.
Note (for Larger Relay Loads): To control a higher amperage device, such as a pump,
an interposing relay may be used (see Interposing Relay Connections).
Note (for Output Protection): External contact protection is required for use with
inductive loads (see Contact Protection Connections). Failure to use this protection
may reduce contact life, damage the unit, and increase emissions.

microBlox® Single Channel Transmitter/Alarm
Carrier Carrier
Model uBTA-P-1MR/uBTA-P-1SR
Acromag, Inc. Tel: [phone] - 20 -
http://www.acromag.com
- 20 -
https://www.acromag.com
Transmitter Outputs
This carrier may also function as a simple analog transmitter for simultaneous
voltage and current output. Transmitter operation does not require Bluetooth
wireless technology and supports any 0-5V output microBlox® model, which
drives 0-5V and 0-20mA outputs on the carrier. Only Bluetooth wireless
technology models are required to utilize carrier alarm capability, or to
optionally scale a sub-range of the input to drive 0-5V output and 0-20mA on
the carrier. Note that transmitter outputs share a common connection.
Voltage Output
Re-transmitted from module.
Voltage Range: 0-5V, equivalent to the microBlox® module output
retransmitted at the carrier output ±voltage terminals TB4-1,2.
Voltage Load: 5V into 1KΩ minimum, or 5mA Maximum.
Accuracy: ±0.05% of span typical (from module), or ±0.1% of 5V span, ±5mV
maximum (module in carrier). Refer to your module specifications for details.
Current Output
Derived from plug-in module and
transmitted from carrier.
Current Range: 0-20mA/0-5V, 4-20mA/1-5V, output current at TB4-3, and
current return at TB4-2.
Note for 4-20mA Current Output: This alarm panel normally requires that input
modules scale their field input to 0-5V output for use on this carrier, which
produces 0-20mA at the carrier’s current output. If your application requires 4-
20mA output instead of 0-20mA, you may use the I/O scaling function of the
Agility mobile app to scale your module’s input range to 1-5V out instead of 0-
5V, which produces 4-20mA at the current output (note the tandem voltage
output from the carrier becomes 1-5V, not 0-5V). The App will also scale this for
you if you select 4-20mA as an output type option under the uBTA Alarm tab.
Output Maximum: 24mA typical.
Load Resistance: 0-550Ω minimum (20mA).
Accuracy: ±0.1% of 20mA span, or ±0.020mA maximum.
Current Trim: ±0.08mA adjustable via a precision 15 turn Trim Pot near the
output terminals. Adjustment is not normally required, but useful for making
fine output current adjustments or to correct for component aging at the
channel (See Output Current Trim adjustment for instructions on making this
calibration).
Controls
LED Indicators
Channel PWR (Green) –Channel Green ON indicates power applied to carrier
and the plugged-in uB module is operating normally (sourced from module).
Channel BLE (Blue) –Channel Blue ON indicates Linking to channel module is
enabled (via BLE DIP switch of channel) and sourced from module.
Channel Relay 1 (Orange) –ON indicates first relay of channel is energized.
Channel Relay 2 (Orange) - ON indicates second relay of channel is energized.
BLE DIP Switch
Set this DIP switch to ON (left) to allow Bluetooth wireless technology linking to
the module plugged into the carrier socket for alarm reconfiguration.
CJC DIP Switch
Set this DIP switch to the ON position (left) to make a CJC connection at the
input. Some models require CJC to be set ON or OFF depending on the model as
follows (also consult your specific module instructions):
CJC
uB30/40
uB31/41
uB32/42
uB34/35
uB37/47
ON or OFF


Set ON


Set OFF
