American Innovations Bullhorn EPS3AH User manual
Information in this document is subject to change without notice.
© 1999-2002 American Innovations, Ltd. All rights reserved.
Reproduction in any manner whatsoever without the written permission
of American Innovations is strictly forbidden.
Trademarks used in this text: the American Innovations’ logo, icon, and
Bullhorn logo and icon are trademarks of American Innovations, Ltd.
Other trademarks and trade names may be used in this document to
refer to either the entities claiming the marks and names or their
products. American Innovations, Ltd. disclaims any proprietary interest in
trademarks and trade names other than its own.
May 17, 2002 Part No. 122068-000, Rev. 0
External Power Supply-EPS3AH Installation Guide
v
Table of Contents
Chapter 1. Before You Start . . . . . . . . . . . . . . . . . . . . . . 1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Getting Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chapter 2. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Mounting the External Power Supply . . . . . . . . . . . . . . . . . . . . 5
Connecting the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Connecting Signal Output Wires . . . . . . . . . . . . . . . . . . . . . . . . 7
Connecting the Low Battery Alarm . . . . . . . . . . . . . . . . . . . . . . 9
To Connect the Solar Panel Charger . . . . . . . . . . . . . . . . . . . . 10
Reconnecting the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Appendix A. Wiring Diagrams . . . . . . . . . . . . . . . . . . . 13
Appendix B. Technical Specifications . . . . . . . . . . . 15
List of Tables and Figures
Table 1. Load and Reserve Time . . . . . . . . . . . . . . . . . . . . . . . . 2
Figure 1. External Power Supply Dimensions . . . . . . . . . . . . . 5
Figure 2. External Power Supply . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
External Power Supply-EPS3AH Installation Guide
1
Chapter 1
Before You Start
This guide explains how to install the Bullhorn External Power Supply-
EPS3AH. The information is intended for service technicians who are
also installing the Bullhorn APM4AMR03.
Use this guide in conjunction with the installation instructions provided
in the “APM4AMR03 Installation and Configuration Guide”. A copy of
the manual is available for download on the “Technical Help and
Support Files” web page on the Bullhorn web site.
Note:
Certain terms are used throughout this guide in reference to
specific equipment. “External power supply” refers to the Bullhorn
External Power Supply – EPS3AH, “unit” refers to the APM4AMR03
model and “transmitter” refers to a low power transmitter (such as the
Druck® PDCR 143 pressure transmitter).
Introduction
The external power supply is a device that functions as an interface
between the APM4AMR03 and a low power transmitter. It consists of a
waterproof enclosure that houses an interface board and a 12V DC lead
acid battery that is trickle charged by the Bullhorn solar panel charger.
The interface board supports input connections for up to four
transmitters, a low battery alarm output, and a Bullhorn solar panel
charger. As an option, the solar panel charger can also be used to charge
the battery on the APM4AMR03.
2
Chapter 1. Before You Start
The external power supply provides a nominal 12V DC at 0.008A power
for up to 15 days without recharging. The Bullhorn solar panel charger
maintains the charge on the battery when conditions are suitable. The
maximum current available is limited by a fuse to 0.500A. Operating the
Bullhorn external power supply beyond this limit will cause the fuse to
open. Operating at this limit for an extended period of time can also
cause the fuse to open.
The amount of time the transmitter load can run off of the external
power supply with no solar charging (reserve time) can be determined
using the information in the following table.
Table 1. Load and Reserve Time
Required Tools
The following list identifies tools required for the installation:
Small and large flat head screwdrivers
Small Phillips head screwdriver
10mm socket wrench
Adjustable wrench
Wire strippers
Wire cutters
Appropriate tools for preparing the mounting surface for
installation of the external power supply.
2-conductor shielded twisted pair cable such as Alpha 2463C. A
multi-conductor cable of appropriate wire gauge and rating can
also be used. Amount required is determined by the distance of
the transmitter from the APM4AMR03.
Load Reserve Time
8 mA 15 Days
20 mA 6 Days
External Power Supply-EPS3AH Installation Guide
3
Getting Technical Support
If you need assistance with the installation, contact American
Innovations (AI) Technical Support in any of the following ways:
Telephone: 1-512-249-3400
Email: [email protected]
Fax: 1-512-249-3444
ATTN: Technical Support Department
Mail: American Innovations, Ltd.
ATTN: Technical Support Dept.
12211 Technology Blvd.
Austin, TX 78727
4
Chapter 1. Before You Start
External Power Supply-EPS3AH Installation Guide
5
Chapter 2
Installation
The information in this chapter explains how to install the Bullhorn
external power supply.
Mounting the External Power Supply
The external power supply should be installed within 3 feet (1 meter) of
the APM4AMR03. The length of the signal cable that connects the
external power supply to the APM4AMR03 should also be kept as short
as possible to maintain signal integrity.
Depending on the type of mounting surface, use appropriate hardware
to firmly secure the external power supply in place. Use the information
in the following figure to help determine where to mount the external
power supply.
Figure 1. External Power Supply Dimensions
6 1/16
inches
Cabinet Depth: 5.25 inches
6 13/16 inches
(width)
Front View Cabinet Mounting Hole
.31 inches diameter
(4 places)
8.5 inches
(length)
6
Chapter 2. Installation
Connecting the Transmitter
Complete the following steps to connect the transmitter to the external
power supply:
1. If connected, disconnect the battery cable from the 2-pin
connector labeled “Battery” on the interface board. Refer to
Figure 2.
Note:
Do not disconnect wires from the power supply.
Figure 2. External Power Supply
2. Route the transmitter cable through the bottom fitting on the
external power supply and toward the terminal block labeled
“Sensor #1” through “Sensor #4”.
3. Prepare the transmitter cable for installation using the following
steps:
a. Cut excess cable length and remove 3 inches from the outer
jacket.
b. Strip ¼to ½inch of insulation from each wire.
4. Connect the transmitter cable in the “Sensor 1” terminal using
the following steps:
a. Insert the positive (+) transmitter wire in the terminal labeled
“Power +”. Secure the terminal using a small screwdriver.
12V Power Supply
Bottom Fitting
Interface Board
Sensor Power & Inputs
Signal Outputs
Battery Input
Solar Panel Input
Low Battery Alarm Output
External Power Supply-EPS3AH Installation Guide
7
b. Insert the negative (–) transmitter wire in the terminal labeled
“Power –”. Secure the terminal using a small screwdriver.
5. Connect the transmitter output signal wires in the “Sensor 1”
terminal using the following steps:
a. Insert the positive (+) signal wire in the terminal labeled
“Signal +”. Secure the terminal using a small screwdriver.
b. Insert the negative (–) signal wire in the terminal labeled
“Signal –”. Secure the terminal using a small screwdriver.
6. Repeat steps 2 through 5 if additional transmitters need to be
connected to the external power supply. Use terminal positions
labeled “Sensor #2” through “Sensor #4”.
7. Secure loose cable using cable ties or staples.
Connecting Signal Output Wires
This section explains how to install the sensor signal output wires from
the transmitter to the APM4AMR03. Use 2-conductor shielded twisted
pair cable such as Alpha 2463C. A multi-conductor cable of appropriate
wire gauge and rating can also be used.
The external power supply includes a terminal block with terminal
positions labeled “SIG #1” through “SIG #4”. Each of these terminal
positions correspond to a “Sensor” terminal position with the same
number. For example, “SIG #1” corresponds to “Sensor #1”.
1. Complete the following steps to connect signal output wires in
the terminal block on the interface board:
a. Route signal output wires through the bottom fitting on the
external power supply and toward the terminal block labeled
“SIG #1” through “SIG #4”.
b. Prepare signal output wires for installation using the
following steps:
1) Cut excess cable length and remove 3 inches from the
outer jacket.
2) Strip ¼to ½inch of insulation from each wire.
3) Label the wire pair “Sensor 1” and designate one wire as
“Signal” and the other as “Signal Ground”.
8
Chapter 2. Installation
c. Install the “Sensor 1” and “Signal” wires in the “SIG #1”
terminal block using the following steps:
1) Insert the “Signal” wire in the terminal position labeled
“SIG +”. Secure terminal using a small screwdriver.
2) Insert the “Signal Ground” wire in the terminal position
labeled “SIG –”. Secure terminal using a small
screwdriver.
d. Repeat steps “a” through “c” using terminals “SIG #2”
through “SIG #4” if additional transmitters need to be
connected.
2. Complete the following steps to connect signal output wires to
the APM4AMR03. Refer to the “APM4AMR03 Installation and
Configuration Guide” when making connections.
a. Route “Sensor #1” signal output wires on the external power
supply through the bottom fitting on the APM4AMR03.
Route wiring toward the terminal block labeled “CHAN 1”
through “CHAN 4”.
b. Prepare signal output wires for installation using the
following steps:
1) Cut excess cable length and remove 3 inches from the
outer jacket.
2) Strip ¼to ½inch of insulation from each wire.
c. Connect the conductor pair labeled “Sensor #1” using the
following steps:
1) Connect the “Signal” wire in the “CHAN 1 +” terminal.
2) Connect the “Signal Ground” wire in the “CHAN 1 –”
terminal.
3. Repeat steps “a” through “c” using input channels labeled
“CHAN 2” through “CHAN 4” if additional signal input wires
need to be connected.
External Power Supply-EPS3AH Installation Guide
9
Connecting the Low Battery Alarm
The low battery alarm is an optional connection. The external power
supply includes a battery monitor circuit with an open drain output. The
circuit generates a contact closure (logic low) when the battery voltage
drops below 11.0V. The normal state is open contact.
Complete the following steps to connect the optional low battery alarm
to the external power supply and APM4AMR03:
1. Connect the low battery alarm cable in the external power supply
using the following steps:
a. Route the 2-conductor cable through the fitting on the
bottom of the external power supply and toward the output
terminal labeled “LOW BATTERY ALARM”.
b. Prepare the cable for installation using the following steps:
1) Remove 3 inches from the outer jacket.
2) Strip ¼to ½inch of insulation from each wire.
c. Label one wire “Alarm Output” and the other “Alarm
Ground”.
d. Insert the “Alarm Output” wire in the positive (+) “LOW
BATTERY ALARM” terminal. Secure terminal using a small
screwdriver.
e. Insert the “Alarm Ground” wire in the negative (–) “LOW
BATTERY ALARM” terminal. Secure terminal using a small
screwdriver.
2. Connect the other end of the low battery alarm cable in the
APM4AMR03 using the following steps:
a. Route the cable through the bottom fitting on the
APM4AMR03 and toward the “CHAN 5” and “CHAN 6”
terminals.
b. Prepare the cable for installation using the following steps:
1) Cut excess cable length and remove 3 inches from the
outer jacket.
2) Strip ¼to ½inch of insulation from each wire.
10
Chapter 2. Installation
c. Connect the “Alarm Output” wire in either the “CHAN 5 +”
or “CHAN 6 +” terminal.
d. Complete one of the following steps to connect the “Alarm
Ground” wire:
1) If the “Alarm Output” wire is connected in the “CHAN
5 +” terminal, connect “Alarm Ground” in the “CHAN
5 –” terminal.
-OR-
2) If the “Alarm Output” wire is connected in the “CHAN
6 +” terminal, connect “Alarm Ground” in the “CHAN
6 –” terminal.
3. Secure loose cables with cable ties or staples.
To Connect the Solar Panel Charger
1. The solar panel battery charger must first be assembled before it
can be installed. Refer to the assembly instructions in the
“APM4AMR03 Installation and Configuration Guide”.
2. Mount the solar panel charger on a flat surface using the attached
pipe bracket and u-bolt. Position the glass panel to the south for
maximum efficiency.
3. Route the cable on the solar panel charger through the bottom
fitting on the external power supply.
4. Prepare the cable for installation using the following steps:
a. Remove 3 inches from the outer jacket.
b. Strip ¼to ½inch of insulation from each wire.
5. Use the following steps to connect the cable in the “Solar Panel”
terminal block on the external power supply:
a. Insert the negative (–) wire in the negative (–) terminal input.
Secure terminal using a small screwdriver.
b. Insert the positive (+) wire in the positive (+) terminal input.
Secure terminal using a small screwdriver.
External Power Supply-EPS3AH Installation Guide
11
6. If the APM4AMR03 battery will be charged by the same solar
panel charger as the transmitter:
a. Repeat steps 3 through 5 to install another cable in the “Solar
Panel” terminal block.
b. Follow the instructions in the “APM4AMR03 Installation and
Configuration Guide” to connect the cable in the “Battery
Charger” terminals on the controller board.
7. Secure loose cables with cable ties or staples.
Reconnecting the Battery
Complete the following steps:
1. Reconnect the battery cable in the 2-pin connector labeled
“Battery” on the interface board. (This cable was disconnected
earlier in the section entitled “Connecting the Transmitter”.)
Make sure the connector is fully seated.
2. Tighten the wire seal fitting on the bottom of the external power
supply cabinet to ensure moisture does not penetrate inside the
cabinet.
3. Continue the APM4AMR03 installation and configuration using
the instructions in the “APM4AMR03 Installation and
Configuration Guide”.
12
Chapter 2. Installation
External Power Supply-EPS3AH Installation Guide
13
Appendix A
Wiring Diagrams
Figure 3. Wiring Diagrams
External Power Supply
Power +
Power –
Signal +
Signal –
Supply +
Common
Signal
Jumper “Power –” to “Signal –”
Transmitter
External Power Supply
Power +
Power –
Signal +
Signal –
Supply +
Supply –
Signal
Signal Ground
Transmitter
3-Wire Connection Diagram
4-Wire Connection Diagram
14
Appendix A. Wiring Diagrams
External Power Supply-EPS3AH Installation Guide
15
Appendix B
Technical Specifications
Environmental (all components)
Operating Temperature. . . . . . . . . . . . . . . . . . . . . -30 to +70°C
Humidity. . . . . . . . . . . . . . . . . . . . . . . . 0-95% non-condensing
Physical
Height. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8.5 inches
Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 13/16 inches
Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.25 inches
Inputs (isolated inputs)
Sensor 1-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0V to +5V DC
Input impedance. . . . . . . . . . . . . . . . . . . . . . . . . . .>20M ohm
Outputs
Signal 1-4 . . . . . . . . . . . . . . . . . . . . . . . .Transmitter dependent
Power 1-4:
Nominal voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+12V
Maximum voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+14V
Typical current source per transmitter. . . . . . . . . . . . . 0.002A
Typical current source 4 transmitters. . . . . . . . . . . . . . 0.008A
16
Appendix B. Technical Specifications
Outputs, continued
Power 1-4, continued:
Maximum current source (fused) . . . . . . . . . . . . . . . . .0.500A
Low battery alarm. . . . . . . . . . . . . . . . . . . . . . . Open Drain FET
On state resistance. . . . . . . . . . . . . . . . . . . . . 6.0 ohm @ 25°C
Power source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . External
Maximum switching. . . . . . . . . . . . . .50V DC @ 50mA @ 25°C
Power
Lead Acid Gell Cell Battery:
Nominal voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +12V
Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3AH
Low battery level . . . . . . . . . . . . . . . . . . . . . . . . 11.0V @ 20°C
Dead battery level . . . . . . . . . . . . . . . . . . . . . . . 10.5V @ 20°C
Solar Panel Battery Charger
Short circuit current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA
Operating maximum current . . . . . . . . . . . . . . . . . . . . . 100mA
Operating power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5W
Table of contents
