Det-Tronics EA2100CG User Manual

DET -TR O NICS

®

INSTRUCTIONS

Eagle 2000™

Hazard Event Monitoring System

7/99 Form 95-8424-02

With the trend toward increasingly widespread use of
microprocessors and a wide variety of other electro­static sensitive semiconductor devices, the need for
careful handling of equipment containing these
devices deserves more attention than it has received
in the past.

Electrostatic damage can occur in several ways. The
most familiar is by physical contact. Touching an
object causes a discharge of electrostatic energy that
has built up on the skin. If the charge is of sufficient
magnitude, a spark will also be visible. This voltage
is often more than enough to damage some electronic
components. Some devices can be damaged without
any physical contact. Exposure to an electric field
can cause damage if the electric field exceeds the
dielectric breakdown voltage of the capacitive ele­ments within the device.

In some cases, permanent damage is instantaneous
and an immediate malfunction is realized. Often,
however, the symptoms are not immediately
observed. Performance may be marginal or even
seemingly normal for an indefinite period of time, fol­lowed by a sudden and mysterious failure.

Damage caused by electrostatic discharge can be
virtually eliminated if the equipment is handled only in
a static safeguarded work area and if it is transported
in a package or container that will render the neces­sary protection against static electricity.

Det-Tronics modules that might be damaged by static
electricity are carefully wrapped in a static protective
material before being packaged. Foam packaging
blocks are also treated with an antistatic agent.

If it should ever become necessary to return the mod­ule, it is highly recommended that it be carefully
packaged in the original carton

and static protective

wrapping.

Since a static safeguarded work area is usually
impractical in most field installations, caution should
be exercised to handle the module by its metal
shields, taking care not to touch electronic compo­nents or terminals.

In general, always exercise all of the accepted and
proven precautions that are normally observed when
handling electrostatic sensitive devices.

A warning label is placed on the packaging, identify­ing those units that use electrostatic sensitive semi­conductor devices.

©Detector Electronics Corporation 1982

8/82 75-1005

SERVICE MEMO

Precautions for Handling

Electrostatic Sensitive Devices

*Published in accordance with EIA Standard 471

*

Detector Electronics Corporation

6901 West 110th Street • Minneapolis, Minnesota 55438 USA • Facsimile [phone]

Telephone [phone] or (800) 765-FIRE • Telex 6879043 DETEL UW • Cable DETRONICS

Printed in USA

Table of Contents

SECTION I

SYSTEM OVERVIEW

APPLICATION .........................................................................1

FEATURES .. ...........................................................................1

SYSTEM DESCRIPTION ........................................................1

Detector ...........................................................................1

Communication Gateway – EA2100CG ...........................2

Communication Module – EA2300CM .............................2

Digital Communication Unit – EA2200DCU .....................2

Network Extender – EA2400NE .......................................3

Relay Module – EA2500RM .............................................3

NETWORK OPERATION DURING A FAULT

CONDITION .......................................................3

SECTION II
EA2300CM

COMMUNICATION MODULE

APPLICATION .........................................................................4

FEATURES .............................................................................4

SPECIFICATIONS ..................................................................4

DESCRIPTION ........................................................................5

Addressability ...................................................................5

Status LED’s ....................................................................5

Outputs ............................................................................6

Inputs ...............................................................................6

Reed Switch .....................................................................6

Event Logging ..................................................................6

Fault Tolerant Network .....................................................6

Enclosure .........................................................................6

Terminal Wiring Board .....................................................6

SECTION III

EA2200DCU

DIGITAL COMMUNICATION UNIT

APPLICATION .........................................................................7

FEATURES .............................................................................7

SPECIFICATIONS ..................................................................7

DESCRIPTION ........................................................................8

Enclosure .........................................................................8

DCU Circuit Boards ..........................................................8

SECTION IV

EA2100CG

COMMUNICATION GATEWAY

APPLICATION .........................................................................9

FEATURES .............................................................................9

SPECIFICATIONS ..................................................................9

DESCRIPTION ........................................................................9

Main Gateway ..................................................................9

Auxiliary Gateway ..........................................................10

Faceplate Description ....................................................10

LEDs ..............................................................................11

Relays ............................................................................11

Automatic Diagnostics ...................................................11

Fault Tolerant Communication .......................................12

System Capacity ............................................................12

Installation ......................................................................12

SECTION V

EA2400NE

NETWORK EXTENDER

APPLICATION .......................................................................12

FEATURES ...........................................................................12

SPECIFICATIONS ................................................................12

DESCRIPTION ......................................................................13

Automatic Diagnostics ...................................................13

Enclosure .......................................................................13

GENERAL INFORMATION ...................................................13

System Capacity.............................................................13

Temperature Limitations ................................................13

Response Time Versus System Size .............................14

SECTION VI

EA2500RM

RELAY MODULE

APPLICATION .......................................................................14

FEATURES ...........................................................................14

SPECIFICATIONS ................................................................14

DESCRIPTION ......................................................................15

Conditions for Relay Actuation .......................................15

Operating Modes ...........................................................15

Inputs .............................................................................15

Outputs ..........................................................................15

Status Update ................................................................15

Addressability .................................................................16

Event Logging ................................................................16

Status LEDs ...................................................................16

Fault Tolerant Network ...................................................16

Wiring .............................................................................16

Enclosure .......................................................................16

SECTION VII

SYSTEM INSTALLATION

GENERAL WIRING REQUIREMENTS .................................16

DETERMINING GAUGE OF POWER WIRING ....................17

COMMUNICATION MODULE AND DCU WIRING ...............19

TYPICAL APPLICATIONS ....................................................19

GATEWAY WIRING ..............................................................20

Gateway Switch Settings ...............................................20

INSTALLATION CHECKLIST ................................................27

SECTION VIII

SYSTEM STARTUP

STARTUP PROCEDURE ......................................................28

SYSTEM CONFIGURATION ................................................28

CALIBRATION ......................................................................28

CALIBRATION ALGORITHMS ..............................................28

Calibration Algorithm A (Type Codes 1, 2, 3, 4)

for Gas Detectors ....................................................29

Calibration Algorithm A (Type Codes 1, 2, 3, 4)

for Environmental Monitors ....................................30

Calibration Algorithm B (Type Codes 5, 6) ....................31

Calibration Algorithm C (Type Codes 7, 8, 9, 10) ..........32

Calibration Algorithm D (Type Codes 11, 12, 13, 14) ....33

Calibration Algorithm E (Type Codes 23 and 24) ..........34

Calibration Algorithm F (Type Codes 15 to 22) ..............34

SECTION IX

SYSTEM MAINTENANCE

ROUTINE MAINTENANCE ...................................................35

Manual Check of Output Devices ..................................35

Checkout in Normal Mode .............................................35

O-Ring Maintenance ......................................................35

Sensor Replacement .....................................................36

REPLACEMENT PARTS ......................................................36

DEVICE REPAIR AND RETURN ..........................................36

Office Locations .............................................................36

ORDERING INFORMATION .................................................38

Mounting Racks .............................................................38

Accessories ....................................................................38

Replacement Parts ........................................................38

REFERENCE LIST ................................................................38

List of Illustrations

Figure 1 Simplified Eagle System ....................................2

Figure 2 Normal Communication over the Digital

Highway .............................................................3

Figure 3 Communication with a Single Wiring Fault on the

Network ..............................................................3

Figure 4 Communication with Multiple Wiring Faults on the

Network ..............................................................4

Figure 5 Network Wiring Fault Affects Communication with

Relay Module and Auxiliary Gateway ................4

Figure 6 Dimensions of Communication Module and Relay

Module Enclosures in Inches (Centimeters) ......5

Figure 7 Terminal Wiring Board Installed in Junction Box ...7
Figure 8 Dimensions of DCU and Network Extender

Enclosures in Inches (Centimeters) ...................8

Figure 9 Gateway Dimensions in Inches (Centimeters)....9

Figure 10 Gateway Faceplate ..........................................10

Figure 11 Gateway Multiplexing .......................................12

Figure 12 Basic Eagle System with One Gateway ...........13

Figure 13 Expanded System with Two Network

Extenders .........................................................14

Figure 14 Eagle System with Two Gateways ...................14

Figure 15 Recommended Grounding for Cable Shields ....17

Figure 16 Wiring Configuration for Communication Module

and DCU ..........................................................19

Figure 17 Communication Module Address Switches ......19

Figure 18 A Typical Application – Communication Module

with an Eagle U8700 or U8800 Detector ..........20

Figure 19 A Typical Application – Communication Modules

or DCUs with Toxic Gas Sensors .....................21

Figure 20 A Typical Application – Communication Modules

or DCUs with Combustible Gas Sensors and

Transmitters .....................................................22

Figure 21 A Typical Application – Communication Modules

with Flame Detection Devices ..........................23

Figure 22 Dimensions of Q4004 Mounting Rack ..............24

Figure 23 Clip Positioning for Q4004 Mounting Racks .....24

Figure 24 Gateway Terminal Configuration ......................25

Figure 25 A Typical Eagle System with Gateway,

Communication Modules and OIS ..................25

Figure 26 A Typical Eagle System with Gateway,

Communication Module, Network Extender

and Relay Module ............................................26

Figure 27 Gateway DIP Switch Assignments ...................27

Figure 28 Gateway DIP Switch Location ..........................27

Figure 29 Calibration Algorithms “A” and “F” ....................29

Figure 30 Calibration Algorithm “B” ..................................31

Figure 31 Calibration Algorithm “C” ..................................32

Figure 32 Calibration Algorithm “D” ..................................34

Figure 33 Calibration Algorithm “E” ..................................34

List of Tables

Table 1 Detector Type Codes .......................................11

Table 2 Detector Range Codes .....................................11

Table 3 Fault Codes ......................................................11

Table 4 Status Conditions Capable of Actuating Relay ...15
Table 5 Typical Resistance of Stranded Copper Wire

at 75°C .............................................................17

Table 6 Baud Rate Selection – Switches S6-1, S6-2,

S6-3 ..................................................................27

Table 7 Gateway Address – Switches S8-1, S8-2 ........27

i

INSTRUCTIONS

EAGLE 2000

™

Hazard Event Monitoring System

Section I

System Overview

NOTE

This manual covers the basic operation of the
communication module, digital communication unit,
gateway, network extender and relay module. It
will not cover any specific detector, host device or
Operator Interface Station. Refer to the appropri­ate instruction manual for complete information
relating to these devices. While this manual cov­ers general practices and procedures for installa­tion and wiring of the Eagle 2000 system, always
refer to the instruction manual provided with each
device for specific instructions.

APPLICATION

Det-Tronics’ Eagle 2000 is a state-of-the-art hazard
detection monitoring system consisting of any combina­tion of addressable flame, gas or environmental detec­tors. The system communicates through an RS422 or
RS232 serial port utilizing Modbus®protocol to make the
system’s data available to a variety of host devices.

FEATURES

• Field addressable

• Utilizes industry standard Modbus protocol

• Comprehensive data acquisition

• Up to 250 devices per loop on a single twisted pair
of wires

• Accommodates a variety of devices with 4 to 20 ma
or relay contact inputs

• Non-volatile memory for alarm and calibration data

• Fault tolerant communication loop

• Built in diagnostics

• Compatible with Det-Tronics flame, gas or environ­mental sensors

• Sensor sensitivity trending.

SYSTEM DESCRIPTION

The Eagle system can consist of the following components:

Detector
Communication Gateway (EA2100CG)
Digital Communication Unit (EA2200DCU)
Communication Module (EA2300CM)
Network Extender (EA2400NE)
Relay Module (EA2500RM)
A host device

Shielded twisted pair cable (22 AWG, Level 4) is used to
wire all nodes in a serial communication loop starting
and ending at the gateway. Refer to Figure 1.

DETECTOR

The Eagle system is compatible with a variety of detec­tors including flame, combustible gas, toxic gas, oxy­gen, and environmental monitoring devices. The output
of the detector can be a 4 to 20 ma signal, or a digital
contact signal such as a switch closure or relay contact.

DET -TR O NICS

®

©Detector Electronics Corporation 1999 7/99 95-8424-02

Modbus is a registered trademark of Modicon Inc.

COMMUNICATION GATEWAY – EA2100CG

The gateway provides the communication link between
the communication module/detector and a Det-Tronics
Operator Interface Station, programmable logic con­troller (PLC), distributed control system (DCS) or other
host device. Registers in the gateway are used for
passing information between the gateway and the host
or between the gateway and nodes on the network. The
gateway communicates through an RS232 or RS422
serial port using Modbus protocol.

Local annunciation capability is provided using LEDs, a
three digit display, and a twenty segment bar graph dis­play on the faceplate of the gateway. The LEDs indicate
normal operation, alarm, calibration or fault condition.
When an alarm condition occurs at a node on the net­work or when a calibration or fault event occurs, the
address and type of detector are identified on the digital
display, and the percentage of full scale is indicated on
the bar graph. If a single event occurs, the gateway
display shows the pertinent information for the detector
at that specific address. If more than one event should
occur at the same time, the display will sequentially
show each detector’s information by order of address.

Five relays are also provided – four fully configurable
alarm relays and one fault relay.

The use of additional gateways (each with its own host
connection) is possible, thereby ensuring enhanced
system fault tolerance.

The communication gateway is a rack mountable device
that occupies two spaces in a standard Det-Tronics
mounting rack (in control room location).

Refer to Section IV of this manual for a complete
description of gateway operation.

COMMUNICATION MODULE – EA2300CM

Each detector on the loop has its own communication
module. The communication module enables a conven­tional detector to be converted to an addressable
detector. It provides communication capability for the
detector by digitizing a 4 to 20 ma output and transmit­ting the value as a process variable to the gateway. The
communication module can also accept two digital con­tact inputs. In addition, the communication module
sends status and diagnostic information for itself and its
detector to the gateway.

The communication module consists of an electronic
printed circuit board incorporating state-of-the-art com­munication technology, mounted inside a watertight,
explosion-proof aluminum junction box. It is designed
for use in hazardous locations and is typically mounted
at or near the point of detection.

DIP switches on the communication module circuit
board are used to set the address of the communication
module, enabling the communication gateway to identi­fy each individual detector in the system.

Refer to Section II of this manual for a complete descrip­tion of communication module operation.

DIGITAL COMMUNICATION UNIT – EA2200DCU

The Digital Communication Unit (DCU) digitizes a 4 to 20
ma analog signal from a sensor/transmitter and transmits
the value as a process variable to the gateway. The DCU
consists of an aluminum enclosure containing a communi­cation module circuit board and a terminal wiring board.
The communication module circuit board is identical to the
circuit board used in the communication module described
above. The DCU enables the use of Det-Tronics basic
sensor/transmitters, which attach directly to the DCU
enclosure, and provides a means of performing non-intru-

2

422/232

OR

60 SENSORS AND / OR 2000 METER LOOP

EAGLEVISION

™

OIS

POWER SUPPLY

PLC

DCS

COMMUNICATION

GATEWAY

(EA2100CG)

PORT (2)

NODE 2

NODE 3

NODE 4

NODE 5

OR

PORT (1)

NODE 1

DIGITAL

COMMUNICATION UNIT

(EA2200DCU)

DET-TRONICS

FLAME

DETECTION

DET-TRONICS

GAS

DETECTION

DET-TRONICS

ENVIRONMENTAL

MONITORING

COMMUNICATION MODULES (EA2300CM)

NETWORK

EXTENDER

(EA2400NE)

A1551

Figure 1—Simplified Eagle System

sive calibration. Unlike the communication module, the
DCU allows the operator to view three status indicating
LEDs through a viewing window on the enclosure cover.

The DCU is available in three different models to allow
use with a variety of sensing devices.

Refer to Section III of this manual for a complete
description of DCU operation.

NETWORK EXTENDER – EA2400NE

The EA2400NE Network Extender expands the capabilities
of the Eagle system by allowing additional nodes as well
as additional wiring to be added to the communication
loop. Without a network extender, the communication net­work is limited to 60 nodes on a 2000 meter loop. Each
network extender, however, increases the capacity of the
loop by up to 60 nodes and 2000 meters of wiring, up to a
maximum of 250 nodes and 10,000 meters of wiring.

The electronic circuitry is mounted inside an explosion­proof metal housing for installation in hazardous loca­tions.

Refer to Section V of this manual for a complete
description of network extender operation.

RELAY MODULE – EA2500RM

The Eagle Relay Module monitors a selected group of
detection nodes on the digital communication loop. The
relay module is furnished with a sealed SPDT relay and
generates an output when the selected criteria for out­put actuation are met.

The specific status conditions to which the relay module
will respond are selected at the time of configuration.
These can include one or more of a variety of fault,
alarm or calibration events.

The relay module must be configured to operate in either
the common alarm mode or the voting mode. When
configured to operate as a common alarm, the relay is
actuated when an event specified for output actuation
occurs at any of the nodes within the specified block of
addresses on the loop. Alternatively, the relay module
can perform a voting function, monitoring up to 8 detec­tion nodes in a zone and actuating its relay when an
event specified for output actuation occurs at a minimum
number of nodes within the zone (selectable from 1 to 8).

All electronic circuitry is contained inside a water tight,
explosion-proof aluminum enclosure that is designed for
installation in hazardous locations.

Refer to Section VI of this manual for a complete
description of relay module operation.

NETWORK OPERATION
DURING A FAULT CONDITION

The Eagle system utilizes a unique method for detecting
an open or short in the communication network wiring.
This state-of-the-art feature minimizes the possibility of a
communication breakdown in the event of a wiring fault
in the communication loop and can also serve as an aid
in troubleshooting.

The communication network is constructed as a loop
that starts and ends at a pair of por ts on the main gate­way. The nodes communicate with the main gateway
over the digital highway (Figure 2). Communication
between the gateway and the communication modules
normally occurs through the first gateway port.

Each communication module contains both the hardware
and software necessary to isolate it in the event of a wiring
fault. If a short occurs somewhere in the network wiring,
the gateway annunciates the fault, while the fault isolation
circuitry in the communication modules isolates the section
of the network where the fault has occurred. Normal com­munication continues over the network utilizing the second
network communication port of the gateway (Figure 3).

A single open or short on the digital highway will not affect
normal system communication between the communication
modules and the main gateway, since communication is re­established with the gateway from the other direction utiliz­ing the second network communication port. Normal sys­tem communication will continue until the wiring problem
can be repaired. However, two exceptions must be noted:

1. Multiple wiring faults

2. Communication involving devices other than
communication modules.

3 95-8424

A1644

NODE 1 NODE 8

NODE 3 NODE 6

NODE 2 NODE 7

NODE 4 NODE 5

MAIN

GATEWAY

Figure 2—Normal Communication over the Digital Highway

A1645

MAIN

GATEWAY

NODE 1 NODE 8

NODE 3 NODE 6

NODE 2 NODE 7

NODE 4 NODE 5

PATH A PATH B

WIRING FAULT

Figure 3—Communication with a Single Wiring Fault on the Network

Multiple Wiring Faults

In the event of multiple wiring faults, the nodes between the
faults will continue to function, but the faults will prevent
them from communicating with the main gateway (Figure 4).
In this example, nodes 1 to 4 communicate using one gate­way port (path A) and nodes 7 and 8 use the other gateway
port (path B). Nodes 5 and 6 are unable to report to the
gateway because they are isolated by the two wiring faults.

Communication with Relay Modules or
Auxiliary Gateways

It is important to note that data will not “pass through”
the main gateway. This means that when a network
wiring fault condition exists, devices communicating on
one side of the main gateway cannot communicate with
devices on the other side of the gateway (Figure 5). In
this example, devices communicating along path A can­not communicate with devices using path B.

In the event of a single wiring fault, normal communica­tion will continue between all communication modules
and the main gateway. However, if the system uses a
relay module (Figure 5) and it is configured to monitor
nodes on the other side of the fault, those devices will be
unable to report to the relay module. For example, only
nodes 4 to 6 (Figure 5) are able to communicate with the
relay module. The relay module cannot receive data
from nodes 1 to 3. In the same way, only nodes 1 to 3
will be able to communicate with the Auxiliary gateway.

IMPORTANT

Since it is impossible to predict where a network
fault might occur or exactly what effect it will have
on actual system operation, it is important to diag­nose and repair any fault as soon as possible after
it is detected to ensure reliable system operation.

Section II

EA2300CM

Communication Module

APPLICATION

The Eagle Communication Module provides communi­cation capability for a sensing or control device capable
of generating a 4 to 20 ma signal. In addition to the 4 to
20 ma input, the communication module can also simul­taneously accept two digital contact inputs. Designed
for use with the Eagle communication gateway, the com­munication module provides a unique technique for
detecting and isolating opens or shorts in the field
wiring. This fault isolation method allows for communi­cation integrity in the event of a single break or short on
the communication loop. The communication module
circuitry is mounted inside an explosion-proof metal
housing, which is typically mounted beside the associ­ated sensing or control device.

The Eagle communication module is compatible with
most Det-Tronics flame detection, gas detection or envi­ronmental monitoring devices.

FEATURES

• Field addressable

• Fault isolation

• Pass through communication circuitry on power loss

• 4 to 20 ma analog input

• Two digital contact inputs

• Non-volatile memory for logging of alarm and cali­bration events

• Sealed 5 ampere SPDT relay

• 2 adjustable alarm setpoints

• 10 bit signal resolution

• EMI hardened

• Screw terminal connectors

SPECIFICATIONS

INPUT VOLTAGE—

18 to 32 vdc.

INPUTS—

4 to 20 ma analog signal, with an input impedance of
200 ohms in series with a protection diode. Two digital
inputs (for switch or relay contacts). One is dedicated
to either detector calibration or detector fault indication
(refer to the System Configuration Matrix, form 95-8453).
The other is available for general use, with either a nor­mal or inverted input.

4

A1646

MAIN

GATEWAY

NODE 1 NODE 8

NODE 3 NODE 6

NODE 2 NODE 7

NODE 4 NODE 5

PATH A PATH B

WIRING FAULT

Figure 4—Communication with Multiple Wiring Faults on the Network

A1647

MAIN

GATEWAY

NODE 1

NODE 6

NODE 2

RELAY

MODULE

NODE 5

NODE 3 NODE 4

PATH A PATH B

AUXILIARY

GATEWAY

WIRING FAULT

Figure 5—Network Wiring Fault Affects Communication

with Relay Module and Auxiliary Gateway

OUTPUTS—

Digital communication, transformer isolated (78.5
Kbps). Calibrated 0 to 4095 digital output corresponds
to 0 to full scale current input from transmitter. Twelve
discrete points of status and diagnostic information are
also sent to the gateway. One SPDT sealed relay, rated
5 amperes resistive at 30 vdc, is used for remote annun­ciation, response or reset of external devices.

POWER CONSUMPTION—

60 ma maximum during normal operation with relay
energized or during startup (does not include
detector/transmitter power).

TEMPERATURE RANGE—

Operating: –40°F to +167°F (–40°C to +75°C).
Storage: –67°F to +185°F (–55°C to +85°C).

SHIPPING WEIGHT (Approximate)—

2.2 lb (1.0 kg).

DIMENSIONS—

See Figure 6.

DESCRIPTION

The Eagle Communication Module consists of a terminal
wiring board and a printed circuit board containing the
communication circuitry, mounted inside a water-tight,
explosion-proof aluminum junction box.

ADDRESSABILITY

Module identification (up to 250 nodes) is accomplished
by setting switches on an eight position DIP switch
located on the communication module circuit board.

STATUS LEDs

Three LEDs are located at the center of the communica­tion module circuit board. (The cover must be removed
from the junction box in order to view the LEDs.)

The green LED serves as a power-on indicator and is
illuminated whenever power is applied. During normal
operation, only the green LED is on.

The red LED is used to indicate a calibration, power-up,
fault or alarm condition. The flashing rate of the red
LED indicates the following conditions:

Power-up = Pulsed at a 0.5 Hz rate
Calibration = Pulsed at a 1 Hz rate or on steady
Fault = Pulsed at a 4 Hz rate
Alarm = Illuminated continuously.

The red LED indicates the various steps of the calibra­tion process. When the calibration begins, the red LED
flashes at a 1 Hz rate. When the zero part of the cali­bration is completed, the LED is on steady. The span
gas is then applied to the sensor, the sensor input
increases, and the LED flashes at a 1 Hz rate. When
the span part of the calibration is completed, the LED is
again on steady. When the calibration gas is removed
and the sensor signal returns to below 4%, the calibra­tion is complete and the LED turns off.

When power is applied to the system, the red LED flash­es at a 1/2 Hz rate until the sensor signal is within 4% of
full scale for 10 seconds or 5 minutes has elapsed,
whichever comes first.

If the communication module has not been configured,
the red LED blinks at the 4 Hz rate.

The amber LED comes on when the service switch is
pressed. (Pressing the service switch will not affect nor­mal operation.) The amber LED is provided for factory
diagnostic purposes and is not for use in the field.
Illumination of the amber LED normally indicates a fail­ure in the communication chip. Replacement of the
communication module circuit board is required.

5 95-8424

3.7

(9.4)

3.3

(8.4)

4.1

(10.4)

B1482

4.5

(11.4)

4.1

(10.4)

0.3 DIA.
(0.8)

3/4" NPT (2)

Figure 6—Dimensions of Communication Module and Relay

Module Enclosure in Inches (Centimeters)

OUTPUTS

A 5 ampere SPDT relay is provided. When the commu­nication module is used with a U8700 or U8800, the
relay output is used to reset the transmitter. The relay is
actuated for 1 second when a “reset sensor” signal is
sent to the communication module by the gateway in
response to a request from the host.

If the communication module is used with a different
sensor/transmitter, the relay is activated when the “alarm
1” threshold is reached. The communication module
alarm relay is latching and is reset by a command from
the host through the gateway or by cycling power.

The alarm relay is reset by setting the reset sensor bit in
the communication module control word. If the process
variable is still above the alarm threshold, the relay will
not be reset.

INPUTS

The communication module has one 4 to 20 ma non-iso­lated input, with an input impedance of 200 ohms in
series with a protection diode. A 10 bit analog-to-digital
(A/D) converter digitizes the analog signal.

In addition to the 4 to 20 ma analog input, the communica­tion module has two digital inputs. Depending on the type
of detector being used, digital input 1 is dedicated to either
detector calibration or detector fault indication. (Refer to
the System Configuration Matrix, form number 95-8453, to
determine the function of input 1 for a specific detector.)

When the communication module is used with a U8700
or U8800 Transmitter, the first digital input is connected
to the transmitter calibration relay contacts. The trans­mitter then uses this relay to signal calibration informa­tion to the communication module.

The second digital input is typically used as a simple
switch input. The status of this input is reflected in the
communication module status word. This input can be
configured as a normal or inverted input.

REED SWITCH

A reed switch, located on the terminal board, enables
calibration of the sensor without opening the enclosure.
The switch is activated by placing a magnetic calibra­tion tool on a specified location on the side of the enclo­sure (midway between the two mounting holes, about an
inch from the mounting surface).

EVENT LOGGING

The communication module is capable of logging up to
8 calibration events and 8 alarm events. Date and time
stamping of these events is also provided.

Calibration Log

A log is kept for each calibration. This information can
be used by the operator to evaluate the remaining life of
a sensor. An aborted calibration is indicated by zeros in
the zero and span values. The calibration log is cleared
when the sensor replacement switch is pressed and the
calibration is successfully completed.

The initial calibration is logged in position one, where it
remains for the life of the sensor. If more than 8 calibra­tions are performed without the sensor replacement
switch being pressed, the newest calibration data will
replace the second oldest so that the initial calibration
data can be saved. The old calibration data will be lost.
This feature enables sensor sensitivity trending to aid in
maintenance or troubleshooting.

Alarm Log

A log of alarm 1 and alarm 2 events is stored in each
communication module. Time, date and alarm type are
logged for each alarm event. A maximum of 8 events
can be stored. If more than 8 events are logged, the
oldest event will be overwritten.

FAULT TOLERANT NETWORK

The Eagle system utilizes a unique technique for detect­ing an open or short in the network wiring. The commu­nication module contains both the software and hard­ware necessary to isolate it in the event of a wiring fault.
This allows communication to continue in the remainder
of the network utilizing the second network communica­tion port of the gateway. Refer to “Network Operation
During a Fault Condition” in Section I for complete infor­mation.

ENCLOSURE

The explosion-proof, watertight aluminum enclosure is
designed for use in Class I, Division 1, Groups B, C and
D hazardous locations.

The enclosure is furnished with two 3/4 inch NPT con­duit entries.

TERMINAL WIRING BOARD

All external wiring is connected to screw terminal con­nectors on the terminal wiring board located inside the
junction box (Figure 7). The communication module cir­cuit board connects to the terminal wiring board with a
ribbon connector and is mounted inside the junction
box above the terminal wiring board.

6

Section III

EA2200DCU

Digital Communication Unit

APPLICATION

The Eagle 2000 Digital Communication Unit (DCU) digi­tizes a 4 to 20 ma analog signal from a basic Det-Tronics
gas sensor/transmitter and transmits the value as a pro­cess variable to the Eagle communication gateway. In
addition to the 4 to 20 ma input, the DCU can also simulta­neously accept two digital (switch or relay contact) inputs.
All circuitry is housed in a single explosion-proof/water­tight enclosure for location at the area of detection.

The DCU is provided in various configurations, depend­ing on the type of gas to be detected. (DCUs are avail­able for use with combustible gas, oxygen and toxic gas
sensor/transmitters.) All DCUs contain a communications
module and a terminal wiring board. DCUs for detecting
combustible gas also contain a transmitter board.

FEATURES

• Field addressable

• Fault isolation

• Pass through communication circuitry on power loss

• 10 bit signal resolution

• 2 alarm setpoints

• Sealed 5 ampere SPDT relay

• Non-volatile memory for logging of alarm and cali­bration events

• Non-intrusive one person calibration

• LED for calibration, fault and alarm status annunciation

• EMI hardened

• Screw terminal connectors.

SPECIFICATIONS

INPUT VOLTAGE—

18 to 32 vdc.

INPUTS—

4 to 20 ma analog signal, with an input impedance of
200 ohms in series with a protection diode. Two digital
contact inputs (switch or relay contacts). One is dedi­cated to detector calibration. The other is available for
general use, with either a normal or inverted input.

OUTPUTS—

Digital communication, transformer isolated (78.5 kbps).
Calibrated 0 to 4095 digital output corresponds to 0 to
full scale current input. Twelve discrete points of status
and diagnostic information are also sent to the gateway.

One SPDT sealed relay, rated 5 amperes resistive at 30
vdc, is activated when the “alarm 1” threshold is reached.
The relay is latching and is reset by the host device when
the process variable is below the alarm threshold.

POWER CONSUMPTION—

DCU with toxic sensor/transmitter:

95 ma maximum during normal operation with relay
energized or during startup.

DCU with transmitter and combustible gas sensor:

180 ma maximum during normal operation with
relay energized, 500 ma during startup.

TEMPERATURE RANGE—

Operating: –40°F to +167°F (–40°C to +75°C).
Storage: –67°F to +185°F (–55°C to +85°C).

SHIPPING WEIGHT (Approximate)—

2.2 lb (1.0 kg).

DIMENSIONS—

See Figure 8.

7 95-8424

RELAY

RELAY

ALARM

RELAY

GND

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

DO NOT RUN WIRES IN THIS AREA. 
KEEP CLEAR FOR RIBBON CABLE CONNECTOR.

A1556

MAGNETIC SWITCH * EARTH GROUND TERMINAL

Figure 7—Terminal Wiring Board Installed in Junction Box

* TO ACTIVATE THE REED SWITCH, HOLD THE MAGNETIC CALIBRATION TOOL AGAINST

THE SIDE OF THE ENCLOSURE MIDWAY BETWEEN THE TWO MOUNTING HOLES,
APPROXIMATELY AN INCH ABOVE THE MOUNTING SURFACE FOR COMMUNICATION
MODULES, UNIVERSAL DCUs AND COMBUSTIBLE GAS DCUs, AND APPROXIMATELY
3 1/2 INCHES ABOVE THE MOUNTING SURFACE FOR INTRINSICALLY SAFE DCUs.

DESCRIPTION

The DCU is available in three different configurations to
accommodate a variety of gas sensing devices.

– The combustible gas DCU (EA2200DCU EX)

includes a transmitter board for converting the sen­sor output signal (in millivolts) to a 4 to 20 ma signal
for input to the communication module board. The
transmitter board is furnished with the test points
and controls needed for calibrating the sensor.

– The universal DCU (EA2200DCU UNIV) contains a

communication module PC board and a terminal
wiring board. This DCU is used with oxygen and
toxic gas sensors.

– The intrinsically safe DCU (EA2200DCU IS) is similar to

the universal DCU, but includes an intrinsically safe bar­rier board in addition to the other PC boards. This DCU
model is required for use with intrinsically safe sensors.

ENCLOSURE

The explosion-proof, watertight aluminum enclosure is
designed for use in Class I, Division 1, Groups B, C and
D hazardous locations. It is designed to meet CEN­ELEC requirements for EEx d IIC T5 hazardous loca­tions, and is IP66 and NEMA 4 rated. The removable
cover is furnished with a window to allow the operator to
view the three status indicator LEDs on the communica­tion module PC board.

The enclosure is furnished with two 3/4 inch NPT con­duit entries.

DCU CIRCUIT BOARDS

Terminal Wiring Board

All external wiring is connected to screw terminal con­nectors on the terminal wiring board located inside the
junction box.

Communication Module Board

The communication module consists of a printed circuit
board containing the communication circuitry. The com­munication module PC board used in the DCU is identi­cal to the PC board used in the EA2300CM Eagle
Communication Module

.

The communication module provides communication
capability for the sensor/transmitter by converting the 4 to
20 ma transmitter output to a 10 bit digital signal and trans­mitting the value as a process variable to the gateway. It
can also accept two digital (contact) inputs. In addition,
the communication module sends status and diagnostic
information for itself and its sensor to the gateway.

Refer to Section II of this manual for a complete descrip­tion of the communication module

board

.

Transmitter Board

DCUs that are used with combustible gas sensors
(EA2200DCU EX) incorporate a transmitter board. This
board furnishes operating power for the sensor and con­verts the sensor output to a 4 to 20 ma signal for input to
the communication module

board.

The transmitter also
provides zero and span potentiometers for calibration of
the sensor. The DCU is calibrated using the Eagle sys­tem calibration algorithm C (algorithm D for oxygen sen­sors), as described in the “Calibration” section.

I.S. Barrier Board

Intrinsically safe sensors must be powered through an
I.S. barrier, which is included with model EA2200DCU IS.

8

6.5

(16.5)

3.38 (8.4)

4.1 (10.4)

B1520

4.5 (11.4)

4.1

(10.4)

3/4" NPT (2)

0.3 DIA.
(0.8)

Figure 8—Dimensions of DCU and Network Extender Enclosure

in Inches (Centimeters)

Section IV

EA2100CG

Communication Gateway

APPLICATION

The gateway provides the communication link between a
Det-Tronics addressable detector and the host device.
Registers in the gateway are used for passing information
between the host and communication modules. The gate­way communicates with the host device through a serial
interface port (RS232 or RS422) using Modbus protocol.

Local annunciation capability is provided utilizing a three
digit display, LEDs and a twenty segment bar graph dis­play. When a detector is in alar m or when a calibration
or fault event occurs, the detector’s address and detec­tor type are identified on the digital display, and the per­centage of full scale is indicated on the bar graph.

FEATURES

• Utilizes industry standard Modbus protocol

• Bar graph and digital displays

• Alarm, calibrate and fault LEDs

• Transformer isolation of network ports

• Programmable relay outputs

• Mounts in standard Q4004 rack

• Multiple gateways to enhance reliability or support
additional host devices

• EMI/RFI hardened.

SPECIFICATIONS

INPUT VOLTAGE—

18 to 32 vdc.

POWER CONSUMPTION—

Operating: 325 ma at 24 vdc maximum.
Startup: 1.0 ampere at 24 vdc, momentary.

I/O PORTS—

Host Port: The gateway is a “Modbus slave” device and
communicates with a host device through a serial port
using Modbus protocol. The serial port provided for the
host can be configured as either RS232 or RS422.

Network Port: Two 78.5 kbps communication ports pro­vide the start and end of the loop upon which the sen­sors and their communication modules reside. The loop
wiring is level 4, 22 AWG shielded twisted pair. The
wiring is transformer coupled to protect the transceivers.

TEMPERATURE RANGE—

+32°F to +140°F (0°C to +60°C).

HUMIDITY RANGE—

0 to 90% RH, non-condensing.

SHIPPING WEIGHT (Approximate)—

2.6 lb (1.2 kg).

DIMENSIONS—

See Figure 9.

DESCRIPTION

The Eagle gateway transmits information from the com­munication modules to any device that can act as a
Modbus Master. This interface between the gateway
and host device conforms to the Modbus RTU standard.

For systems requiring a higher throughput than the
Modbus 19.2 kbaud standard, the EagleVision Operator
Interface Station can connect to the gateway at 57.6
kbaud.

The Eagle system is designed to operate with up to 4 gate­ways (one main and three auxiliary) on a single communi­cation loop. Each gateway is configured by DIP switches
to function either as a “main” or an “auxiliary” gateway.
Both gateways contain identical software and hardware
and differ only in respect to their function within the system.

MAIN GATEWAY

The main gateway is used by the host device to perform
device configuration. It also generates a periodic time
and date broadcast as well as a heartbeat signal on the
communication loop for use by the devices on the loop
in their fault isolation schemes. As long as wiring
integrity is maintained, all “normal” gateway initiated
communication on the loop originates from the primary
communication port (Com. 1). If a fault occurs, commu­nication takes place from both the primary and the sec­ondary communication port (Com. 2).

A relay in the gateway terminates the communication
wiring during normal operation. In the event of a power
loss, a communication pass-through circuit is created.

9 95-8424

9.3 (23.6)

2.0

(5.0)

7.0

(17.8)

A1496

Figure 9—Gateway Dimensions in Inches (Centimeters)

AUXILIARY GATEWAY

Auxiliary gateways are used to connect additional host
devices to the loop for data acquisition purposes.
Additional host devices are not able to modify configu­ration information for the devices on the loop.

During normal operation, the communication relay for the
auxiliary gateway is closed, creating a communication
pass-through circuit for the communication loop wiring.

Fault isolation is handled by the communication mod­ules on either side of the auxiliary gateway. If power is
lost to the gateway, a communication pass-through cir­cuit is created. If an auxiliary gateway does not receive
a time and date broadcast or heartbeat signal from the
main gateway, its communication relay will open and
terminate the loop wiring and it will begin generating the
time and date broadcast and heartbeat signal.

Up to three auxiliary gateways can be used in each
communication loop. The auxiliary gateway with the
lowest address will generate the time and date broad­cast and heartbeat signal.

FACEPLATE DESCRIPTION

The faceplate provides four RELAY LEDs and one
FAULT LED, a digital display, a bar graph display, and a
reset pushbutton. See Figure 10.

Digital Display

The digital display is a three digit “seven segment” dis­play. During normal operating conditions, the display
indicates “000.” When a system event occurs (alarm,
fault or calibration), the display sequentially shows the
detector address, followed by detector type, followed by
percent full scale/fault code/calibrate signal.

IMPORTANT

The gateway allows simultaneous use of devices
with various operating ranges. The gateway dis­play always reads 0 to 100% full scale. If the oper­ating range of the reporting sensor is anything
other than 0 to 100 units, the gateway display will
indicate a percentage of full scale, not direct engi­neering units.

Detector Address – All three digits are on and the deci­mal point for each digit is also on. Up to 250 addresses
are available (displayed 0.0.1. to 2.5.0.).

Detector Type – The first two digits show the detector
type code (Table 1). The third digit displays the detec­tor range code (Table 2).

Percent/Fault/Calibrate – The display follows the sen­sor input in percent of full scale up to 100% full scale. A
negative sign is used to indicate a negative zero drift
condition.

A fault condition is indicated as “FXX,” with F indicating
that a fault has occurred and XX identifying the type of
fault that is detected (Table 3).

If a detector is being calibrated, the display will show
“CAL.”

Each indication is shown for 3/4 second, followed by a
1/4 second delay before going to the next indication.

If a single event occurs, the gateway display will lock on
that specific address. If more than one event should
occur, the digital display and bar graph will track the
status of each address where activity is occurring by
sequencing through each event by order of address.

Bar Graph Display

The 20 segment bar graph display tracks the input sig­nal from the sensor, providing a 0 to 100% full scale
reading of sensor input.

The bar graph display indicates 0 to 100% full scale,
which corresponds to the 4 to 20 ma signal for all gas
sensors except oxygen. The 4 to 20 ma signal from an
oxygen sensor corresponds to 0 to 25% oxygen.

10

RELAY 1

100

90

80

70

60

50

40

30

20

10

RELAY 2

RELAY 3

RELAY 4

FAULT

RESET

RELAY 1 LED

RELAY 2 LED

RELAY 3 LED

RESET PUSHBUTTON

DIGITAL DISPLAY

BAR GRAPH DISPLAY

RELAY 4 LED

FAULT LED

A1542

Figure 10—Gateway Faceplate

LEDs

Five faceplate LEDs are provided for indicating the sta­tus of the gateway relays. The LEDs correspond to the
active state of the relay, not the coil condition. When the
relay is reset, the corresponding LED is also reset.

RELAYS

The gateway is provided with five relays. The relays are
sealed and have form C (SPDT) contacts rated 5
amperes resistive at 30 vdc/250 vac. The relays can be
configured for either normally energized or normally de­energized operation.

Four of the relays are general purpose relays and one
functions as a fault relay. The specific function of the
four general purpose relays is programmable through
the host computer. The fault relay responds to an inter­nal gateway fault or to an open or short condition in the
communication network wiring.

Each general purpose relay has three configuration reg­isters. The first designates a starting node address, the
second designates an ending node address, and the
third is a trigger configuration register.

The starting and ending node address registers designate
a “block” of nodes on the network that will activate the cor­responding relay when the r equir ed conditions ar e met.

The configuration of the trigger register determines the
conditions to which the relay will respond. The gateway
will actuate the relay during an event that matches the
trigger register parameters and is within the configured
block of node addresses. The configurable event
options include communication network fault, sensor
fault, sensor calibration, alarm, input 2 active and node
not communicating.

The relays can be configured for latching or non-latching
operation. If latching operation is selected, the relays will
remain on until they are reset by pressing the reset push­button on the gateway faceplate, by activating an exter­nal reset switch, or by soft command through the gate­way control word. The reset function resets the relay,
regardless of the status of the initiating device. This
allows additional events to trigger the same relay, even
though the first device may still be in a triggering mode.

AUTOMATIC DIAGNOSTICS

The gateway features self-testing circuitry that checks
for problems that could prevent proper system
response. The gateway performs two forms of diagnos­tics – self diagnostics and communication loop device
diagnostics. Self diagnostic tests monitor the condition

11 95-8424

GAS

01 Ex
02 H

2

S

03 CL

2

04 CO
05 NH

2

06 SO

2

07 HCL
08 HCN
18 Toxic
19 O

2

FLAME

20 UV
21 IR
22 UV/IR

ENVIRONMENTAL

40 Oil on Water
41 PathWatch Heavy HC
42 PathWatch Total HC
43 PathWatch Benzene
44 PathWatch Low Sens
60 Other

GATEWAY/RELAY MODULE

80 Main Gateway
81 Aux Gateway
82 Backway Gateway
90 Relay Module

Table 1—Detector Type Codes

Table 2—Detector Range Codes

CODE RANGE

A 0 to 10
C 0 to 20
E 0 to 25
H 0 to 50

J 0 to 100
L 0 to 200
P 0 to 500
U 0 to 1000

— 4 to 20 ma

Table 3—Fault Codes

F10 = sensor/detector fault (com mod status bits 3 or 12)
F20 = com mod fault (com mod status bits 1, 2 or 8)
F30 = network fault detected by gateway

(bar graph will show 20 segments on)

F31 = loss of power to main gateway

(bar graph will show 20 segments on)

F32 = right heartbeat fault
F40 = reset or external reset of gateway

held longer than 30 seconds

F50 = gateway communication channel 1 fault
F51 = gateway communication channel 2 fault
F60 = invalid configuration, unable to configure

of the gateway and set the fault bit in the gateway status
word in the event of a problem. A watchdog timer
resets the gateway if its software gets caught in a loop.

In the second form of diagnostics, the gateway provides
a watchdog timer for each configured device on the
loop. Each time the device reports to the gateway, the
timer accumulator is reset to zero and the timer starts
over. If a device does not respond before its watchdog
timer expires, the gateway sets the “not communicating”
bit in the status word for that device.

CAUTION

The fault detection circuitry does not monitor the
operation of external response equipment or the
wiring to these devices. It is important that these
devices be checked periodically to ensure that
they are operational.

FAULT TOLERANT COMMUNICATION

Fault tolerance is provided by constructing the communi­cation network as a loop starting and ending at a pair of
communication por ts on the gateway. Communication
between the gateway and the communication modules
on the network normally occurs through the first port. If a
fault occurs somewhere in the network wiring, the gate­way annunciates the fault, while fault isolation circuitry in
the communication modules isolates the problem section
of the network. Communication is re-established
between the gateway and the communication modules
downstream of the problem from the other direction utiliz­ing the second network communication port. This fea­ture minimizes the possibility of a communication break­down in the event of a wiring fault in the communication
loop. Refer to “Network Operation During a Fault
Condition” in Section I for additional information.

SYSTEM CAPACITY

The gateway can support a communication network
consisting of up to 60 detectors in a 2000 meter wiring
loop. By adding network extenders to the loop, it can
be expanded by up to 60 detectors and 2000 meters of
wiring per extender, up to a maximum of 250 nodes.

To fur ther expand the system, gateway multiplexing is
possible, as illustrated in Figure 11.

Refer to the “Network Extender” section of this manual
as well as the network extender instruction manual (form
95-8430) for complete information.

INSTALLATION

The Eagle Communication Gateway is rack mountable
and occupies two spaces in a standard Det-Tronics
Q4004 Mounting Rack (in a non-hazardous area).

Section V

EA2400NE

Network Extender

APPLICATION

The EA2400NE Network Extender expands the capabili­ties of the Eagle system by allowing additional nodes as
well as additional wiring to be added to the communica­tion loop. Without a network extender, the communica­tion network is limited to 60 nodes on a 2000 meter
loop. Each network extender, however, increases the
capacity of the loop by up to 60 nodes and 2000 meters
of wiring, up to a maximum of 250 nodes and 10,000
meters of wiring.

The electronic circuitry is mounted inside an explosion­proof metal housing for installation in hazardous locations.

FEATURES

• Increases capacity of total network

• Screw terminal connectors

• Transformer isolation protection.

SPECIFICATIONS

INPUT VOLTAGE—

18 to 29 vdc.

POWER CONSUMPTION—

2 watts nominal at 24 vdc, 5 watts maximum.

INPUTS/OUTPUTS—

Digital, transformer isolated (78.5 kbps).

TEMPERATURE RANGE—

Storage: –49°F to +185°F (–45°C to +85°C).
Operating: Refer to the “System Capacity” section

(under General Application Information)
for temperature limitations.

12

A1543

GATEWAY GATEWAYGATEWAY

MULTIPLEXER

HOST

Figure 11—Gateway Multiplexing

HUMIDITY—

0 to 95% RH at 70°C.

WIRING—

The communication network requires 22 AWG level 4
shielded twisted pair wire. Other wiring should be 18
AWG minimum.

ENCLOSURE RATINGS—

Designed to meet FM and CSA requirements for Class I,
Division 1, Groups B, C and D; and is NEMA 4 rated. It
is designed to meet CENELEC requirements for EEx d
IIC T5 hazardous locations, and is IP66 rated.

SHIPPING WEIGHT (Approximate)—

Electronic module: 1.0 lb (0.5 kg)
Aluminum enclosure: 3.0 lbs (1.4 kg).

DIMENSIONS—

See Figure 8.

DESCRIPTION

The Eagle Network Extender consists of an electronic
module mounted inside a watertight, explosion-proof
aluminum enclosure.

Network extender circuitry supports communication in
both directions. If the fault detection circuitry in a com­munication module or DCU isolates a fault in the network,
communication can continue in the opposite direction.

The use of a network extender requires no special sys­tem configuration at the time of installation, other than
the normal configuration of the gateway and communi­cation modules/DCUs.

AUTOMATIC DIAGNOSTICS

Automatic fault detection circuitry performs a self-test of
the network extender’s memory upon power-up. Two
yellow LEDs, easily visible through the window on the
enclosure, are illuminated in the event that a fault is
detected. Diagnostic circuitry in the network extender
does not monitor system wiring or the functioning of
devices connected to the network extender.

ENCLOSURE

The network extender electronic module is mounted inside
an explosion-proof, watertight aluminum enclosure. A
mounting bracket is provided inside the enclosure for
securing the electronic module. The enclosure has a clear
window for easy viewing of the status indicating LEDs. A
removable cover allows access to the wiring terminals.

The enclosure is furnished with two 3/4 inch NPT con­duit entries.

GENERAL INFORMATION

SYSTEM CAPACITY

Eagle system technology allows the main gateway to
support a communication loop consisting of up to 60
detection nodes, with up to 2000 meters of connecting
wiring. Each network extender that is added to the loop
allows it to be expanded by the same amount - up to 60
detectors with an additional 2000 meters of wiring. A sin­gle communication loop can accommodate up to 6 net­work extenders, with a total of no more than 250 nodes
and up to 10,000 meters of wiring (Figures 12 and 13).

NOTE

The addition of a second or third gateway to the
loop (auxiliary gateway) does not allow additional
nodes or wiring to be added to the loop. The use
of an auxiliary gateway is intended to allow addi­tional host devices to be connected to the network
and/or to provide a backup in the event of a main
gateway failure (Figure 14). If the number of
detection nodes or the wiring distance of the loop
exceeds the limits of the main gateway, one or
more network extenders will be required.

TEMPERATURE LIMITATIONS

Exposure to extreme operating temperatures reduces
the maximum number of nodes allowed on the commu­nication network. If operating temperatures are in the
+32°F to +158°F range (0°C to +70°C), the gateway can
support up to 60 detectors in a 2000 meter wiring loop.
Each network extender allows expansion of the network
by an additional 60 detectors and an additional 2000
meters of wiring (up to 250 nodes and 10,000 meters of
wiring for the total loop).

When operating between +32°F and –40°F (0°C to
–40°C) or between +158°F and +167°F (+70°C to
+75°C), the number of additional nodes for each net­work extender is reduced from 60 to 40 nodes. An addi­tional 2000 meters of wiring can still be accommodated.
The maximum loop wiring distance (10,000 meters) as
well as the maximum number of nodes allowed on the
total communication loop (250) does not decrease, how­ever, additional network extenders will be required.

13 95-8424

NODE NODENODENODE NODE

HOST

GATEWAY

A1596

TOTAL LOOP CAPACITY: 60 NODES, 2000 METERS

Figure 12—Basic Eagle System with One Gateway

RESPONSE TIME VERSUS SYSTEM SIZE

The Eagle 2000 is a highly versatile system that allows
up to 250 detection points to operate on a single com­munication network.

When designing a system, it is important to realize that
increasing the number of nodes on the communication
loop results in a corresponding increase in the amount
of time required for a status change message from a
detection node to reach the host computer.

The communication system requires a finite length of
time to process each bit of information that is transferred
along the communication network. As the number of
nodes increases, so does the amount of data that is
being processed and the time required for processing
the data. As a result, there is a corresponding increase
in the total response time needed to receive the mes­sage from a node that is responding to a status change.

NOTE

Increasing the number of detection nodes on the
communication loop affects only the time needed
for the status update message to reach the host
computer. It does not adversely affect the time
required for a detector to respond to an alarm con­dition and generate the appropriate output.

If fast communication response time is an important cri­teria for a large system, it is recommended that the
number of nodes on an individual loop be kept as small
as practical. Consult the factory for specific information
or for assistance in designing a system.

Section VI

EA2500RM

Relay Module

APPLICATION

The Eagle Relay Module monitors a selected group of
detection nodes on the digital communication loop. The
relay module is furnished with a sealed SPDT relay and
generates an output when the selected criteria for out­put actuation are met.

The specific status conditions to which the relay module
will respond are selected at the time of configuration.
These can include one or more of a variety of fault,
alarm or calibration events.

FEATURES

• Monitors from 1 to 248 nodes

• Configurable for common alarm or voting function

• Up to 105 relay modules on a communication loop

• Sealed 5 ampere SPDT relay

• Field addressable

• Fault isolation

• Pass through communication circuitry on power loss

• Non-volatile memory

• Accepts two digital contact inputs

• EMI hardened

• Screw terminal connectors.

SPECIFICATIONS

INPUT VOLTAGE—

18 to 32 vdc.

INPUTS—

Two digital contact inputs, programmable for active low
or high operation.

14

NODE NODENODENODE NODE

HOST

TOTAL LOOP CAPACITY: 180 NODES, 6000 METERS

A1597

NODE NODE NODENODE

NODE

GATEWAY

NODENODENODE

NODENODE NODE

NETWORK

EXTENDER

NODE

NODENODE

NODE NODENODE

NODE

NETWORK

EXTENDER

NODE NODE

Figure 13—Expanded System with Two Network Extenders

NODE NODENODENODE NODE

HOST

A1598

TOTAL LOOP CAPACITY: 60 NODES, 2000 METERS

HOST

MAIN

GATEWAY

AUXILIARY
GATEWAY

Figure 14—Eagle System with Two Gateways

OUTPUTS—

One SPDT sealed relay, rated 5 amperes resistive at 30
vdc, programmable for normally energized or normally
de-energized operation.

POWER CONSUMPTION—

60 ma nominal, 80 ma maximum at 24 vdc during nor­mal operation with relay energized.

TEMPERATURE RANGE—

Operating: –40°F to +167°F (–40°C to +75°C)
Storage: –67°F to +170°F (–55°C to +77°C).

DIMENSIONS—

See Figure 6.

SHIPPING WEIGHT (Approximate)—

2.2 lbs. (1.0 kg).

DESCRIPTION

The Eagle relay module consists of a terminal wiring
board and an electronic module incorporating a state­of-the-art communication chip, mounted inside an
explosion-proof aluminum enclosure.

CONDITIONS FOR RELAY ACTUATION

The events or system status conditions to which the
relay module can respond are defined in the lower eight
bits of the communication module status word. See
Table 4. When configuring the relay module, any or all
of these conditions can be selected for relay actuation.
Those conditions not selected will be ignored by the
relay module. Since the relay module performs a logical
“or” function on its associated communication modules,
the occurrence of any of the selected conditions can
generate an output.

OPERATING MODES

The relay module must be configured to operate in either
of two modes – the common alarm mode or the voting
mode. These modes determine the conditions needed
for the relay module to generate an output and also
identify the group of detection nodes on the communica­tion loop that will be monitored by the relay module.

Common Alarm Mode

When operating in the common alarm mode, the relay
module performs an “or” function, actuating its relay
when any of the nodes within its group are in a status
condition specified for relay actuation (Table 4). In the
common alarm mode, the group of detection nodes mon­itored by the relay module consists of a block of sequen­tial addresses that is defined by a starting and an ending
address. These two addresses are programmed at the
time of system configuration. The relay module responds

to signals from only those communication modules with
addresses that fall within the specified range.

Voting Mode

As an alternative to the common alarm mode, the relay
module can be configured to operate in the voting
mode. In this operating mode, the relay module can
monitor up to eight communication module addresses in
its voting zone. These addresses are programmed indi­vidually and do not need to be sequential. Only signals
from the specified addresses will be recognized. The
relay is actuated when an event selected for output actu­ation occurs at the specified minimum number of individ­ual nodes within the group (programmable from 1 to 8).

INPUTS

The relay module has two digital contact inputs. These
inputs can be programmed for active high or active low
operation.

OUTPUTS

The relay module is furnished with a sealed five ampere
SPDT relay. The relay is programmable for either nor­mally energized or normally de-energized operation.

The relay can be manually forced into the on or off state
by the host device through the gateway.

When operating in the common alarm mode, the relay is
latching and can be reset by the host device when
events or system status conditions specified for relay
actuation no longer exist. When operating in the voting
mode, the relay module can be programmed for either
latching or non-latching operation.

STATUS UPDATE

The relay module sends a status message to the gate­way at a field programmable rate between 1 and 10 sec­onds. The status message contains the present condi­tion of the output and fault isolation relays, the two digital
inputs, fault status, and the force relay on/off status.

Table 4—Status Conditions Capable of Actuating Relay

15 95-8424

Communication Module

Condition

Status Word Bit

1 Com 1 Fault
2 Com 2 Fault
3 Sensor Fault
4 Calibration
5 Alarm 1
6 Alarm 2
7 Digital Input 2
8 Output Relay

ADDRESSABILITY

Relay module identification is accomplished by setting
rocker switches on an eight position DIP switch located on
the electronic module. Valid addr esses ar e fr om 5 to 110.

NOTE

Each relay module constitutes a node on the com­munication loop and counts as one of the 250
nodes maximum allowed on the total communica­tion loop.

EVENT LOGGING

The relay module maintains a log of the eight most
recent alarm events. Time and date are logged for each
alarm. A maximum of eight events can be stored. If
more than eight alarm events are logged, the oldest
events will be lost.

STATUS LEDs

Three LEDs are located at the center of the PC board on
the electronic module. (The cover must be removed
from the enclosure in order to view the LEDs.)

The green LED serves as a power-on indicator and is
illuminated whenever power is applied. During normal
operation, only the green LED is on.

The red LED indicates an alarm or fault condition. The
flashing rate of the red LED indicates the following con­ditions:

On steady = Alarm condition

Blinking = Fault condition.
An alarm condition has priority over a fault condition.
The amber LED is provided for factory diagnostic purpos-

es and is not normally used in the field. A flashing amber
LED indicates a problem with the communication chip.

FAULT TOLERANT NETWORK

The relay module utilizes the same unique fault isolation
technique for detecting a network wiring fault as the
Eagle communication modules. The relay module con­tains both the software and hardware to isolate it in the
event of a wiring fault. This allows communication to
continue through the remainder of the network.

WIRING

The serial communication loop is wired using level 4, 22
AWG shielded twisted pair wire. Wiring for power,
inputs and outputs must be 18 AWG minimum.

All external wiring is connected to screw terminal con­nectors on the terminal wiring board that is factory
mounted inside the enclosure. The electronic module is
mounted inside the enclosure above the terminal wiring
board and is connected to the terminal wiring board
with a ribbon cable.

ENCLOSURE

The watertight, explosion-proof aluminum enclosure is
designed for use in Class I, Division 1, Groups B, C and
D hazardous locations. It is designed to meet CEN­ELEC requirements for EEx d IIC T5 hazardous loca­tions, and is IP66 rated.

The enclosure is furnished with two 3/4 inch NPT con­duit entries.

Section VII

System Installation

GENERAL WIRING REQUIREMENTS

NOTE

The wiring procedures in this manual are intended
to ensure proper functioning of the device under
normal conditions. However, because of the many
variations in wiring codes and regulations, total
compliance to these ordinances cannot be guaran­teed. Be certain that all wiring complies with appli­cable regulations that relate to the installation of
electrical equipment in a hazardous area. If in
doubt, consult a qualified official before wiring the
system.

All devices on the Eagle communication network are
wired in a serial loop that starts and ends at the gate­way. The use of 22 AWG level 4 shielded twisted pair
cable is required for wiring the communication network.
For other system wiring, 18 AWG minimum is recom­mended. All shields should be grounded at only one
end to prevent ground currents.

NOTE

The recommended procedure for grounding the
shields of the communication loop wiring requires
the shields to be connected to each other inside
the enclosure of each device on the loop, ensuring
continuity of all shields on the loop. However, to
prevent ground currents from flowing through the
shield, the ends of the shield must be left discon­nected at a single point on the loop (typically at a
node midway around the loop). The shields must
not be connected to earth ground at any of the
device enclosures. The two shield ends are con­nected to earth ground at the gateway (Figure 15).

16

Moisture can have a detrimental effect on the perfor­mance of electronic devices. Therefore, it is important
to take proper precautions during installation to ensure
that moisture will not come in contact with the electrical
connections or components of the system.

In installations that do not use wiring conduit, the use of
properly installed watertight glands is required to pre­vent the entry of moisture into the device enclosure.

In applications where the wiring cable is installed in
conduit, the conduit must not be used for wiring to other
electrical equipment. In addition, the use of conduit
seals is required to prevent damage to electrical con­nections caused by condensation within the conduit.

Conduit seals must be watertight and explosion-proof
and are to be installed even if they are not required by
local wiring codes. A seal must be located as close to
the enclosure as possible. In no case should this seal
be located more than 18 inches (46 cm) from the
device.

When pouring a seal, the use of a fiber dam is required
to assure proper formation of the seal. Seals should
never be poured in temperatures that are below freez­ing, since the water in the sealing compound will freeze
and the compound will not dry properly. Contamination
problems can result when temperatures rise above the
freezing point and the compound thaws.

The shielding of the cable should be stripped back to
permit the seal to form around the individual leads,
rather than around the outside of the shield. This will
prevent any siphoning action that can occur through the
inside of the shield.

It is recommended that conduit breathers also be used.
In some applications, alternate changes in temperature
and barometric pressure can cause “breathing,” which
allows the entry and circulation of moist air throughout
the conduit. Joints in the conduit system and its com­ponents are seldom tight enough to prevent this

“breathing.” Moisture in the air can condense at the
base of vertical conduit runs and equipment enclosures,
and can build up over a period of time. This can be
detrimental to electronic devices. To eliminate this con­dition, explosion-proof drains and breathers should be
installed to automatically bleed off accumulated water.

Always observe the requirements of local codes.

NOTE

Any deviation from the recommended wiring prac­tices can compromise system operation. Consult
the factory if different wiring types or methods are
being considered.

NOTE

Many Eagle system electronic modules contain semi­conductor devices that are susceptible to damage by
electrostatic discharge. An electrostatic charge can
build up on the skin and discharge when an object is
touched. Therefore, use caution when handling, tak­ing care not to touch the terminals or electronic com­ponents. For more information on proper handling,
refer to Service Memo form 75-1005.

DETERMINING GAUGE OF POWER
WIRING

To ensure proper operation of the devices on the com­munication loop, it is important to consider the size of
the power wiring. Since the resistance of the wiring will
cause a drop in voltage across the wiring, the operating
voltage at the input of the devices on the loop will be
lower than the voltage at the output of the power supply.
If the total resistance of the wiring is too great, the oper­ating voltage will be too low for the device to operate
properly. The following list of variables must be consid­ered when selecting the power wiring:

Wire size. For any given length of wire, the total resis­tance is determined by the gauge of the wire. Table 5
shows the resistance of various wire gauges for each
1000 feet of copper wire.

Wiring length. The total resistance of a length of wire
increases in direct proportion to the length of the wire.

NOTE: SHIELDS GROUNDED AT GATEWAY ONLY. 
SHIELDS CONNECTED TO EACH OTHER (NOT TO GROUND)
AT EACH NODE BUT OPEN AT ONE NODE NEAR MIDDLE OF LOOP.

B1611

NODE NODE

NODE

NODE NODE

GATEWAY

17 95-8424

Figure 15—Recommended Grounding for Cable Shields

Table 5—Typical Resistance for Stranded Copper Wire at 75˚C

Wire Size Ohms per 1,000 Feet

(AWG) at 75

˚

C

18 7.765
16 4.884
14 3.071
12 1.931
10 1.215

8 0.764

Temperature. Resistance increases as operating tem­perature rises. Calculate resistance at a worst case
temperature of 75˚C. See Table 5.

Type of device. Refer to the “Specifications” section for
current ratings. Always consider the maximum (not
nominal) current draw of each device. This typically
occurs at startup and/or when relays are energized.
Note that combustible gas DCUs draw considerably
more current than other DCU models.

Number of units per wiring run. Add the totals of all
units on the wiring run.

Allowable voltage drop. The DCU needs a minimum
of 18 vdc (measured at the DCU) to ensure proper oper­ation. Subtract 18 vdc from the power supply output
voltage to determine the maximum allowable voltage
drop.

The maximum wiring limits can be calculated using
Ohm’s law and the information in Table 5.

Example A:

What is the longest wiring distance for one com­bustible gas DCU using 18 AWG wire?

NOTE

For the following examples, assume that a 24 vdc
nominal power supply is being used. A com­bustible gas DCU draws approximately 500 ma at
startup.

24 vdc (power supply output) minus 18 vdc (mini­mum voltage required) = 6 vdc (maximum allow­able voltage drop).

Voltage ÷ Current = Resistance (Ohm’s law)
Maximum allowable voltage drop ÷ maximum cur-

rent draw = maximum allowable resistance
6 vdc ÷ 500 ma = 12 ohms
12 ohms ÷ 7.765 (resistance for 1000 ft. 18 AWG

wire) = 1.55

1.55 x 1000 = 1550 feet

Example B:

How many combustible gas DCUs can operate at
the end of a 1000 foot length of 14 AWG wire?

Voltage ÷ Resistance = Current (Ohm’s law)
Maximum allowable voltage drop ÷ resistance for

1000 ft. of 14 AWG wire = maximum current draw
6 vdc ÷ 3.071 ohms = 1.95 amps

1.95 amps ÷ 500 ma (current draw per unit) = 4
units

Example C:

What wire size is needed to power 10 combustible
gas DCUs at a distance of 500 feet from the power
supply?

10 units x 500 ma (maximum current draw per
unit) = 5 amps (total current draw at startup)

Voltage ÷ Current = Resistance (Ohm’s law)
Maximum allowable voltage drop ÷ Total current

draw = maximum allowable resistance for 500 feet
of wire

6 vdc ÷ 5 amps = 1.2 ohms
500 feet of 12 AWG wire is 0.9665 ohms

NOTE

The following section provides a general description
of the basic procedure for installing the Eagle sys­tem. Before wiring any Eagle device, refer to the
instruction manual that was provided with the device
for complete installation and wiring instructions:

Communication Module 95-8425
DCU 95-8426
Network Extender 95-8430
Relay Module 95-8423
Gateway 95-8424

18

COMMUNICATION MODULE
AND DCU WIRING

1. Determine the best mounting locations for the
detectors. Whenever practical, detectors should be
placed where they are easily accessible for
calibration. Gas sensors should be pointing down to
minimize the accumulation of contaminants on the
filter and to ensure proper operation. Junction boxes
should be electrically connected to earth ground.

2. Install the detectors as directed in the detector
instruction manual.

3. Remove the cover from the junction box.

NOTE

Do not apply power to the system with the junction
box cover removed unless the area has been de­classified.

4. Connect external system wiring to the appropriate
terminals on the terminal block inside the junction
box. See Figure 16.

CAUTION

The gateway and communication modules will be
damaged if power is inadvertently applied to the
communication lines. The communication module
is protected against damage caused by switching
polarity of the power lines.

5. Check the wiring to ensure proper connections,
then pour the conduit seals and allow them to dry (if
conduit is being used).

6. Set the node address for the communication mod­ule. Valid addresses are from 1 to 250. If the
address is set to zero or an address above 250, the
communication module will ignore the switch set­ting. Duplicated addresses are not automatically
detected. All modules with the same address will
report on that address. The status word will show
the latest update, which could be from any of the
reporting modules at that address.

Address selection is accomplished by setting rocker
switches on the DIP switch assembly on the commu­nication module circuit board. Each rocker switch
has a specific binary value (Figure 17). The node
address is equal to the added value of all closed
rocker switches. All open switches are ignored. For
example: for node No. 5, close rocker switches 1
and 3 (binary values 1 + 4); for node 25, close rock­er switches 1, 4 and 5 (binary values 1 + 8 + 16).

7. Install the electronic module inside the junction box.
Refer to Figure 7. Be sure that the ribbon cable is
properly connected.

8. Inspect the junction box O-ring to be sure that it is in
good condition and properly installed. Lubricate the
O-ring and the threads of the junction box cover with
a thin coat of an appropriate grease to ease installa­tion and ensure a water-tight enclosure. The recom­mended lubricant is a silicone free polyalphaolefin
grease, available from Det-Tronics. If the installation
uses catalytic type combustible gas sensors, it is
imperative that lubricants containing silicone not be
used, since they will cause irreversible damage to
the sensor. Place the cover on the junction box.
Tighten only until snug. Do not over tighten.

TYPICAL APPLICATIONS

Figure 18 illustrates a typical system consisting of com­munication modules used with a U8700 or U8800
Transmitter.

Figure 19 illustrates communication modules or DCUs
with toxic gas sensors.

Figure 20 shows communication modules or DCUs with
combustible gas sensors and transmitters. (A DCU has
the combustible gas transmitter mounted inside the
DCU enclosure.)

Figure 21 illustrates a typical system consisting of com­munication modules with various flame detection devices.

19 95-8424

GROUND SHIELD

AT ONE END ONLY

A1599

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18

A

A

B

B

22 AWG LEVEL 4

SHIELDED TWISTED PAIR

24 VDC POWER INPUT

NETWORK IN

NETWORK OUT

+

+

–

C
NO
NC
COM
IN 1
COM
IN 2
4 TO 20 MA

–
+

DIGITAL INPUT 1

DIGITAL INPUT 2

RELAY

DETECTOR POWER

(24 VDC)

1 2 3 4 5 6 7 8

1 2 3 4

1 2 4 8 16 32 64 128

OPEN OPEN

}

LEAVE IN

OPEN POSITION

NODE ADDRESS EQUALS THE ADDED VALUE
OF ALL CLOSED ROCKER SWITCHES

A1557

BINARY VALUE

Figure 17—Communication Module Address Switches

Figure16—Wiring Configuration for Communication Module and DCU

–

GATEWAY WIRING

Field Wiring Connector

The gateway is furnished with a field wiring connector
backplate that incorporates pressure type screw termi­nals for connecting the external wiring and a circuit
board edge connector for attaching to the gateway.

The use of a mounting rack is required for mounting the
gateway. The backplate is attached to the back of the
rack to allow easy removal of the gateway without dis­turbing the wiring. See Figures 22 and 23.

The gateway is designed for installation in a non-haz­ardous area.

Figure 24 shows the terminal configuration.

Typical Application

Figure 25 illustrates a typical system consisting of a
gateway, communication modules and an OIS. One
communication module is shown with a U8700/U8800
Transmitter.

Figure 26 shows the communication loop and power
wiring for a typical system consisting of a gateway, com­munication module, network extender and relay module.

CAUTION

The gateway will be damaged if power is inadver­tently applied to the communication lines. The
gateway is protected against damage caused by
switching polarity of the power lines.

GATEWAY SWITCH SETTINGS

The gateway contains four 8-position DIP switch assem­blies that are used for:

– Selecting the serial port hardware and software

parameters
– Setting the gateway Modbus address
– Selecting the main gateway
– Setting the gateway address.

Refer to Figure 27 to identify the function of the DIP
switches. Refer to Figure 28 to locate the DIP switch
assemblies on the side of the gateway.

NOTE

Close switch to enable function.

20

1
2
3
4
5
6
7
8
9

18
17
16
15
14
13
12
11
10

CHASSIS GROUND

ALARM
ALARM
CALIBRATE
CALIBRATE
FAULT
FAULT

4 TO 20 MA
RESET

+
–

EAGLE U8800

SENSOR

A1650

1
2
3
4
5
6
7
8
9

18
17
16
15
14
13
12
11
10

CHASSIS GROUND

COMMUNICATION MODULE

22 AWG SHIELDED TWISTED PAIR

NOTES

1. WIRING TYPE

2.SHIELD CONNECTED AT ONE END ONLY.

GATEWAY/

COM MOD

– +

POWER

SUPPLY

GATEWAY/

COM MOD

ALARM
ALARM
CALIBRATE
CALIBRATE
FAULT
FAULT

+
–

RESET

–
+

EAGLE U8700

(JUMPERED FOR NON-ISOLATED CURRENT OUTPUT)

SENSOR

POWER

24 VDC POWER INPUT

NETWORK IN

NETWORK OUT

A
B
A
B

+
+
–
–

RELAY COMMON

+
–

4 TO 20 MA IN

IN 2

COM

IN 1

COM

NC

NO

DIGITAL INPUT 2

DIGITAL INPUT 1

RELAY

DETECTOR POWER

(24 VDC)

24 VDC POWER INPUT

NETWORK IN

NETWORK OUT

A
B
A
B

+
+
–
–

RELAY COMMON

+
–

4 TO 20 MA IN

IN 2

COM

IN 1

COM

NC

NO

DIGITAL INPUT 2

DIGITAL INPUT 1

RELAY

DETECTOR POWER

(24 VDC)

COMMUNICATION MODULE

4 TO 20 MA

POWER

Figure 18—A Typical Application – Communication Module with an Eagle U8700 or U8800 Detector

S5 – Hardware Serial Port Configuration

1 and 2 Channel 0 not used. Leave switches open.

3 Close if RS-232 is used.
4 Close if RS-422 is used. (Macintosh uses

RS-422.)
5 and 6 Channel 0 not used. Leave switches open.
7 and 8 Close switches.

S6 – Software Serial Port Configuration

1, 2, and 3 Determine the desired baud rate, then refer

to Table 6 for the proper switch settings.

(19,200 is recommended.)

4 Leave switch open (no parity).
5 Leave switch open (odd parity).
6 Leave switch open (1 stop bit).
7 Close switch (8 data bits).
8 Leave switch open.

S7 – Modbus Address

Set switches to match Modbus slave address. Setting
must be different for each gateway, unless redundant
gateways are used. (Backup gateway must have same
address as main gateway.) “0” is not a valid address.

S8 – Network Configuration

1 and 2 Set gateway address switches according to

Table 7.

3 to 5 Not used. Leave open.

6 Close for non-latching gateway relays.
7 Close switch if gateway is to function as a

backup gateway. Switch must be open for
main or auxiliary gateway.

8 Close for main gateway, open for all other

gateways.

21 95-8424

1
2
3
4
5
6
7
8
9

1
2
3
4
5
6
7
8
9

COMMUNICATION MODULE/DCU

18
17
16
15
14
13
12
11
10

RED
BLACK
GREEN

SENSOR

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16

17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

422 TXD

+ 

422 TXD –
CHASSIS GND

+
–

422 RXD + 
422 RXD –
EXT RESET
COM
232 TXD



232 RXD
COM
A 
B
A 
B

C
NO
NC

C
NO
NC

C
NO
NC

C
NO
NC

C
NO
NC

CHASSIS GND

GATEWAY

K1

K2

K3

K4

FAULT

+

–

24 VDC POWER INPUT

NETWORK IN

NETWORK OUT

A
B
A
B

+
+
–
–

RELAY COMMON

+

–

4 TO 20 MA IN

IN 2

COM

IN 1

COM

NC

NO

DIGITAL INPUT 2

DIGITAL INPUT 1

RELAY

DETECTOR POWER

(24 VDC)

COMMUNICATION MODULE/DCU

18
17
16
15
14
13
12
11
10

24 VDC POWER INPUT

NETWORK IN

NETWORK OUT

+

–

4 TO 20 MA IN

IN 2

COM

IN 1

COM

NC

NO

DIGITAL INPUT 2

DIGITAL INPUT 1

RELAY

24 VDC

NET 0

NET 1

24 VDC

A1588

22 AWG SHIELDED TWISTED PAIR

WIRING TYPE

RED
BLACK
GREEN

SENSOR

DETECTOR POWER

(24 VDC)

CHASSIS

CHASSIS
A
B
A
B

+
+
–
–

RELAY COMMON

Figure 19—A Typical Application – Communication Modules or DCUs with Toxic Gas Sensors

22

1
2
3
4
5
6
7
8
9

18
17
16
15
14
13
12
11
10

A1549

1
2
3
4
5
6
7
8
9

POWER
SUPPLY

18
17
16
15
14
13
12
11
10

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16

17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

1
2
3
4
5
6
7
8
9

18
17
16
15
14
13
12
11
10

RED

WHITE

NC

BLACK

SENSOR

GAS TRANSMITTER

+ –

RED

WHITE

NC

BLACK

SENSOR

GAS TRANSMITTER

RED

WHITE

NC

BLACK

SENSOR

GAS TRANSMITTER

22 AWG SHIELDED TWISTED PAIR

NOTES

1. WIRING TYPE

2.THREE MODULES SHOWN, 250 MODULES MAXIMUM.

3.SHIELD CONNECTED AT ONE END ONLY.

COMMUNICATION MODULE/DCU

GATEWAY

COMMUNICATION MODULE/DCU

COMMUNICATION MODULE/DCU

24 VDC POWER INPUT

NETWORK IN

NETWORK OUT

A
B
A
B

+
+
–
–

RELAY COMMON

+

–

4 TO 20 MA IN

IN 2

COM

IN 1

COM

NC

NO

DIGITAL INPUT 2

DIGITAL INPUT 1

RELAY

DETECTOR POWER

(24 VDC)

422 TXD

+ 

422 TXD –
CHASSIS GND

+
–

422 RXD + 
422 RXD –
EXT RESET
COM
232 TXD



232 RXD
COM
A 
B
A 
B

C

NO

NC

C

NO

NC

C

NO

NC

C

NO

NC

C

NO

NC

CHASSIS GND

K1

K2

K3

K4

FAULT

NET 0

NET 1

24 VDC

24 VDC POWER INPUT

NETWORK IN

NETWORK OUT

A
B
A
B

+
+
–
–

RELAY COMMON

+

–

4 TO 20 MA IN

IN 2

COM

IN 1

COM

NC

NO

DIGITAL INPUT 2

DIGITAL INPUT 1

RELAY

DETECTOR POWER

(24 VDC)

24 VDC POWER INPUT

NETWORK IN

NETWORK OUT

A
B
A
B

+
+
–
–

RELAY COMMON

+

–

4 TO 20 MA IN

IN 2

COM

IN 1

COM

NC

NO

DIGITAL INPUT 2

DIGITAL INPUT 1

RELAY

DETECTOR POWER

(24 VDC)

POWER

4 TO 20

+
–

POWER

4 TO 20

+
–

POWER

4 TO 20

+
–

Figure 20—A Typical Application – Communication Modules or DCUs with Combustible Gas Sensors and Transmitters

18

17

16

15

14

13

12

11

10

123456789

A1652

123456789

GATEWAY

123456789

COMMUNICATION MODULE

18

17

16

15

14

13

12

11

10

18

17

16

15

14

13

12

11

10

U7698E

U7652C4

FAULT FIRE

oi

+

–

U7602

C 

NO

FAULT

NC

4 TO 20CNO

 FIRE

NC

END OF LINE RESISTOR

FIRE PANEL

GROUND

FAULT 

MONITOR

22 AWG SHIELDED TWISTED PAIR

24 VDC POWER INPUT

NETWORK IN

NETWORK OUT

ABA

B

++–

–

RELAY COMMON

+

–

4 TO 20 MA IN

IN 2

COM

IN 1

COM

NC

NO

DIGITAL INPUT 2

DIGITAL INPUT 1

RELAY

DETECTOR POWER

(24 VDC)

24 VDC POWER INPUT

NETWORK IN

NETWORK OUT

ABA

B

++–

–

RELAY COMMON

+

–

4 TO 20 MA IN

IN 2

COM

IN 1

COM

NC

NO

DIGITAL INPUT 2

DIGITAL INPUT 1

RELAY

DETECTOR POWER

(24 VDC)

24 VDC POWER INPUT

NETWORK IN

NETWORK OUT

ABA

B

++–

–

RELAY COMMON

+

–

4 TO 20 MA IN

IN 2

COM

IN 1

COM

NC

NO

DIGITAL INPUT 2

DIGITAL INPUT 1

RELAY

DETECTOR POWER

(24 VDC)

COMMUNICATION MODULE

COMMUNICATION MODULE

4 TO 20

123456789

10

+–+

–

11

12

13

14

15

16

17

18

19

20

+ 

– +–

o

i

FIRE

FAULT

123456789

123456789

+

–

CON 2 CON 1

FIRE

FAULT

4 TO 20

+–

o

i

24

VDC

+ 

–

23 95-8424

Figure 21—A Typical Application – Communication Modules with Flame Detection Devices

24

Figure 23—Clip Positioning for Q4004 Mounting Racks

(A)

(B)

(C)

1.48 (37.59)

(D)

A1475

ALL CONTROLLER CAGES REQUIRE
A MINIMUM OF 10.12 INCHES (257.1 MM)
DEPTH CLEARANCE

(E)

1

A1476

FIRE CONTROLLERS ARE APPROX. TWO INCHES
WIDE AND REQUIRE TWO GUIDE RAILS FOR
INSERTION. PLACE THE RETAINING CLIP BETWEEN
RAILS TO FORM SETS, LEAVE A GAP BETWEEN SETS.

SET

SETGAP

1

2 3 2

THE Q4004 CONTROLLER CAGE HAS BEEN MODIFIED

TO ACCOMMODATE EITHER FIRE OR GAS CONTROLLERS

OR ANY COMBINATION OF THE TWO.

BY FOLLOWING THE INSTRUCTIONS BELOW, THE CAGE

CAN BE SET UP TO ANY CONFIGURATION.

2

TO INSERT A BLANK PANEL, PLACE A CLIP IN
THE TOP BRACKET IN LINE WITH THE CLIP IN THE
BOTTOM BRACKET.

3

GAS CONTROLLERS ARE APPROX. ONE INCH WIDE
AND REQUIRE ONE RAIL FOR INSERTION. PLACE CLIPS
IN LINE WITH GUIDE RAILS, CAGES WILL ACCEPT AS
MANY GAS CONTROLLERS AS RAILS PROVIDED.

RACK PART NUMBER CONTROLLER
TYPE 005269-XXX POSITIONS FOR: HT: DIM. (A) DIM. (B) DIM. (C) DIM. (D) DIM. (E) WEIGHT

FIRE GAS INCH MM INCH MM INCH MM INCH MM INCH MM LB KG

4U –001 8 16 4U 19.00 482.6 18.30 464.8 17.36 440.9 4.00 101.6 6.97 177.1 9.3 4.2
4U –002 6 12 4U 15.06 382.6 14.36 364.7 13.42 340.9 7.6 3.5
4U –003 4 8 4U 11.13 282.6 10.43 264.9 9.49 241.1 5.9 2.7
4U –004 3 6 4U 9.16 232.7 8.46 214.9 7.52 191.0 5.1 2.3
4U –005 2 4 4U 7.19 182.7 6.49 164.9 5.55 141.0 4.2 1.9
4U –006 1 2 4U 5.22 132.6 4.52 114.8 3.58 90.9 3.1 1.4
3U –007 16 3U 19.00 482.6 18.30 464.8 17.36 440.9 2.25 57.15 5.22 132.6 9.3 4.2
3U –008 12 3U 15.06 382.6 14.36 364.7 13.42 340.9 7.6 3.5
3U –008 8 3U 11.13 282.6 10.43 264.9 9.49 241.1 5.9 2.7
3U –010 6 3U 9.16 232.7 8.46 214.9 7.52 191.0 5.1 2.3
3U –011 4 3U 7.19 182.7 6.49 164.9 5.55 141.0 4.2 1.9
3U –012 2 3U 5.22 132.6 4.52 114.8 3.58 90.9 3.1 1.4

Figure 22—Dimensions of Q4004 Mounting Rack

25 95-8424

123456789

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

422 TXD

+ 

422 TXD –

CHASSIS GND

+

–

422 RXD + 

422 RXD –

EXT RESET

COM

232 TXD 232 RXD

COM

A BA 

B

C

NO

NC

C

NO

NC

C

NO

NC

C

NO

NC

C

NO

NC

CHASSIS GND

K1

K2

K3

K4

FAULT

NET 0

NET 1

24 VDC

A1648

18

17

16

15

14

13

12

11

10

ALARM

ALARM

CALIBRATE

CALIBRATE

FAULT

FAULT

4 TO 20

RESET

+

–

EAGLE U8700/U8800

SENSOR

123456789

18

17

16

15

14

13

12

11

10

A1545

123456789

COMMUNICATION MODULE/DCU

OIS

123456789

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

GATEWAY

COMMUNICATION MODULE/DCU

123456789

COMMUNICATION MODULE/DCU

18

17

16

15

14

13

12

11

10

22 AWG SHIELDED TWISTED PAIR

NOTES

1. WIRING TYPE

2.SHIELD CONNECTED AT ONE END ONLY

3. OIS: OPERATOR INTERFACE SYSTEM

GREEN

RED

BLACK

POWER

SUPPLY

+ –

24 VDC POWER INPUT

NETWORK IN

NETWORK OUT

ABA

B

++–

–

RELAY COMMON

+

–

4 TO 20 MA IN

IN 2

COM

IN 1

COM

NC

NO

DIGITAL INPUT 2

DIGITAL INPUT 1

RELAY

DETECTOR POWER

(24 VDC)

422 TXD

+ 

422 TXD –

CHASSIS GND

+

–

422 RXD + 

422 RXD –

EXT RESET

COM

232 TXD 232 RXD

COM

A BA 

B

C

NO

NC

C

NO

NC

C

NO

NC

C

NO

NC

C

NO

NC

CHASSIS GND

K1

K2

K3

K4

FAULT

NET 0

NET 1

24 VDC

CHASSIS

24 VDC POWER INPUT

NETWORK IN

NETWORK OUT

ABA

B

++–

–

RELAY COMMON

+

–

4 TO 20 MA IN

IN 2

COM

IN 1

COM

NC

NO

DIGITAL INPUT 2

DIGITAL INPUT 1

RELAY

DETECTOR POWER

(24 VDC)

24 VDC POWER INPUT

NETWORK IN

NETWORK OUT

ABA

B

++–

–

RELAY COMMON

+

–

4 TO 20 MA IN

IN 2

COM

IN 1

COM

NC

NO

DIGITAL INPUT 2

DIGITAL INPUT 1

RELAY

DETECTOR POWER

(24 VDC)

POWER

NOTE 3

Figure 25—A Typical Eagle System with Gateway, Communication Modules and OIS

Figure 24—Gateway Terminal Configuration

26

1
2
3
4
5
6
7
8
9

1
2
3
4
5
6
7
8
9

COMMUNICATION MODULE/DCU

18
17
16
15
14
13
12
11
10

RED
BLACK
GREEN

SENSOR

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16

17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

422 TXD

+ 

422 TXD –
CHASSIS GND

+
–

422 RXD + 
422 RXD –
EXT RESET
COM
232 TXD



232 RXD
COM
A 
B
A 
B

C
NO
NC

C
NO
NC

C
NO
NC

C
NO
NC

C
NO
NC

CHASSIS GND

GATEWAY

K1

K2

K3

K4

FAULT

+

–

24 VDC POWER INPUT

NETWORK IN

NETWORK OUT

+

–

4 TO 20 MA IN

IN 2

COM

IN 1

COM

NC

NO

DIGITAL INPUT 2

DIGITAL INPUT 1

RELAY

DETECTOR POWER

(24 VDC)

RELAY MODULE

18
17
16
15
14
13
12
11
10

24 VDC POWER INPUT

NETWORK IN

NETWORK OUT

IN 2

COM

IN 1

COM

NC

NO

DIGITAL INPUT 2

DIGITAL INPUT 1

RELAY

24 VDC

NET 0

NET 1

24 VDC

A1649

CHASSIS
A 
B
A 
B 

+
+
–
–

RELAY COMMON

CHASSIS
A
B
A
B

+
+
–
–

RELAY COMMON

SHIELD

2
1

+
+
–
–

SHIELD

2
1

NETWORK EXTENDER

COM A

24 VDC

COM B

NOTE:

22 AWG SHIELDED TWISTED PAIR

1. WIRING TYPE

2. SEE TEXT FOR SHIELD GROUNDING INSTRUCTIONS

Figure 26—A Typical Eagle System with Gateway, Communication Module, Network Extender and Relay Module

INSTALLATION CHECKLIST

The following checklist is provided as a means of dou­ble checking the system to be sure that all phases of
system installation are complete and have been per­formed correctly.

1. Junction boxes are mounted securely and detectors

are pointing in the proper direction.

2. All cable shields are properly grounded.

3. All junction box covers are tightly installed.

4. Explosion-proof conduit seals or watertight glands

have been installed at all junction box entries.

5. Sensor and communication network wiring is correct.

6. Power wiring is installed and power source is opera-

tional.

7. External loads are properly connected.

8. DIP switches on the communication modules are set

correctly. Record this information for future reference.

9. Gateway switches are set as desired. Record this

information for future reference.

10. Gateway is properly installed in the mounting rack.

11. Proper ventilation is provided (if needed) to prevent

equipment over-heating.

Proceed to System Startup.

27 95-8424

PARITY ENABLE (OFF = NO PARITY, ON = PARITY ENABLED)
BAUD RATE BIT 2 (MSB)
BAUD RATE BIT 1
BAUD RATE BIT 0 (LSB)

PARITY TYPE (OFF = ODD, ON = EVEN)

NUMBER OF STOP BITS (OFF = 1, ON = 2)

RS-422/RS-485 (OFF = RS-422, ON = RS-485)
NUMBER OF DATA BITS (OFF = 7, ON = 8)

1 2 3 4 5 6 7 8

S6 SOFTWARE SERIAL PORT CONFIGURATIONS (CHANNEL 1 ONLY)

0 = 1200
1 = 2400
2 = 9600

3 = 19200
4 = 57600
5 = 38400

6 = 300
7 = 4800

A1554

CHANNEL 1 RS-422 RECEIVER ENABLE
CHANNEL 1 RS-232 RECEIVER ENABLE
CHANNEL 0 RS-422 RECEIVER ENABLE
CHANNEL 0 RS-232 RECEIVER ENABLE

CHANNEL 0 RS-422 TRANSMITTER TERMINATION

CHANNEL 0 RS-422 RECEIVER TERMINATION

CHANNEL 1 RS-422 RECEIVER TERMINATION
CHANNEL 1 RS-422 TRANSMITTER TERMINATION

1 2 3 4 5 6 7 8

S5 HARDWARE SERIAL PORT CONFIGURATIONS

MODBUS ADDRESS BIT 3
MODBUS ADDRESS BIT 2
MODBUS ADDRESS BIT 1
MODBUS ADDRESS BIT 0 (LSB)

MODBUS ADDRESS BIT 4

MODBUS ADDRESS BIT 5

MODBUS ADDRESS BIT 7 (MSB)
MODBUS ADDRESS BIT 6

1 2 3 4 5 6 7 8

S7 MODBUS ADDRESS

UNDEFINED
UNDEFINED
GATEWAY ADDRESS BIT 1 (MSB)
GATEWAY ADDRESS BIT 0 (LSB)

UNDEFINED

NON-LATCHING GATEWAY RELAYS

MAIN/AUXILIARY GATEWAY (OFF = AUX, ON = MAIN)
BACKUP GATEWAY

1 2 3 4 5 6 7 8

S8 LON CONFIGURATION

S8S7S6S5

A1546

BAUD RATE SWITCH POSITIONS

1 2 3

1200 Op Op Op
2400 Cl Op Op

9600 Op Cl Op
19,200 Cl Cl Op
57,600 Op Op Cl
38,400 Cl Op Cl

300 Op Cl Cl

4800 Cl Cl Cl

GATEWAY FUNCTION SWITCH POSITIONS

1 2

Main Gateway Op Op

1st Aux. Gateway Cl Op

2nd Aux. Gateway Op Cl

3rd Aux. Gateway Cl Cl

Figure 27—Gateway DIP Switch Assignments

Figure 28—Gateway DIP Switch Location

Op = Open
Cl = Closed

Table 6—Baud Rate Selection – Switches S6-1, S6-2, S6-3

Table 7—Gateway Address – Switches S8-1, S8-2

Op = Open
Cl = Closed

Section VIII

System Startup

STARTUP PROCEDURE

1. Output loads that are controlled by the system
should be secured (remove power from all output
devices) to prevent actuation.

2. Check all system wiring for proper connection.

3. Before installing the gateway in the mounting rack,
inspect it to verify that it has not been physically
damaged in shipment. Check the rocker switches
for proper programming, then slide the gateway
fully into the mounting rack.

4. Apply power to the system.

NOTE

To prevent the communication modules from going
into a fault isolation condition, it is recommended
that power be applied to the gateway prior to
applying power to the communication modules.

5. Program the system for the desired operation.
Down load configuration data to all devices.

NOTE

After system configuration has been completed, the
entire system should be tested for proper operation
to ensure that configuration was performed properly .

6. Calibrate the sensors.

7. Remove mechanical blocking devices (if used) and
restore power to the output loads.

SYSTEM CONFIGURATION

The host device connected to the Modbus port of the
gateway configures the communication modules by set­ting two words of configuration data in predefined regis­ters in the gateway. The gateway uses these two words
of data to determine configuration information that will be
transferred to the appropriate communication module.

Other operating parameters such as alarm setpoints
and calibration gas concentration can be changed
using the gateway transfer buffer in conjunction with the
control word for the communication module.

For complete information regarding system configuration,
refer to the Det-Tronics EagleVision Software manual for
systems equipped with the Det-Tronics Operator Interface
System. For other systems, refer to form 95-8433 for con­figuration information.

CALIBRATION

To ensure optimum protection, calibration must be per­formed on a regularly scheduled basis. Since each
application is different, the length of time between regu­larly scheduled recalibrations can vary from one installa­tion to the next. In general, the more frequently a sys­tem is checked, the greater the reliability.

IMPORTANT

To ensure adequate protection, calibration must be
performed on a regularly scheduled basis.

Refer to the sensor manual for additional information
regarding calibration.

NOTE

The calibration will be aborted and the detector will
revert back to the previous calibration values if the
calibration is not completed within 12 minutes.
The red LED will turn off, the calibrate bit will be
reset, and the calibration fault bit will be set in the
communication module status word. The calibra­tion will be logged as aborted.

CALIBRATION ALGORITHMS

The following section describes the calibration
sequences that are used for calibrating various detec­tion devices. Refer to the System Configuration Matrix,
form number 95-8453, to determine the calibration algo­rithm that is used for the type of detector being calibrat­ed. Refer to Figures 29 to 33 for calibration algorithms.

NOTE

Some calibration procedures require the operator
to activate the reed switch in the communication
module. To activate the reed switch, place the
magnetic calibration tool on the side of the enclo­sure midway between the two mounting holes,
approximately one inch above the mounting sur­face (approximately 3 1/2 inches above the mount­ing surface for intrinsically safe DCUs). Hold the
magnetic calibration tool in place for 4 seconds to
initiate steps of the calibration procedure.

28

29 95-8424

CALIBRATION ALGORITHM A
(Type Codes 1, 2, 3, 4) for Gas Detectors

Normal Calibration

1. Activate the reed switch or input 1 on the communi­cation module (See Figure 29). The red LED blinks
at a 2 Hz rate while the reed switch or input 1 is
closed.

2. After the reed switch has been closed for 3 sec­onds, the calibrate LED on the communication mod­ule flashes at a 1 Hz rate, indicating that it is ready
for the zero input. The calibrate bit in the communi­cation module status word is set.

3. Apply the zero input (4 ma).

4. Activate the reed switch or input 1 on the communi­cation module. The red LED will blink at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.

5. After the reed switch or input 1 has been closed for
3 seconds, the communication module records the
uncalibrated value in the calibration log and cali­brates the zero value. The calibrate LED goes on
steady.

6. Apply the calibration gas.

7. The calibrate LED blinks at a 1 Hz rate when the
input increases.

8. Activate the reed switch or input 1 on the communi­cation module. The red LED blinks at a 2 Hz rate
while the reed switch or input 1 is closed.

9. The communication module records the uncalibrat­ed value in the calibration log and calibrates the
span value after the reed switch or input 1 is on for
3 seconds.

10. The calibrate LED goes on steady.

11. Remove the span gas and return the analog input to
normal.

12. Activate the reed switch or input 1 on the communi­cation module. The red LED blinks at a 2 Hz rate for
3 seconds while the reed switch or input 1 is closed.

13. The calibration is complete. The calibrate LED turns
off and the calibrate bit in the status word is reset.

If the calibration is not completed within 12 minutes, the
previous calibration values are restored and the calibra­tion is logged as aborted. The calibrate LED flashes at
a 4 Hz rate, the calibrate bit in the status word is reset
and the calibration fault bit is set.

Calibration After Sensor Replacement

1. Open the junction box cover and press the sensor
replacement switch.

2. The calibrate LED on the communication module
flashes at a 1 Hz rate, indicating it is ready for the
zero input. The calibrate bit in the status word is
set.

3. Replace the sensor and apply the zero input (4 ma).

4. Activate the reed switch or input 1 on the communi­cation module. The red LED blinks at a 2 Hz rate for
3 seconds while the reed switch or input 1 is closed.

5. The communication module records the uncalibrat­ed value in position one of the calibration log and
calibrates the zero value. The calibrate LED goes
on steady.

6. Apply the calibration gas.

7. The calibrate LED blinks at a 1 Hz rate when the
input increases.

8. Activate the reed switch or input 1 on the communi­cation module. The red LED blinks at a 2 Hz rate for
3 seconds while the reed switch or input 1 is closed.

9. The communication module records the uncalibrat­ed value in the first register of the calibration log
and calibrates the span value.

10. The calibrate LED goes on steady.

11. Remove the span gas and return the analog input to
normal.

12. Activate the reed switch or input 1 on the communi­cation module. The red LED blinks at a 2 Hz rate for
3 seconds while the reed switch or input 1 is closed.

13. The calibration is complete. The calibrate LED
turns off and the calibrate bit in the status word is
reset.

Pressing the sensor replacement switch aborts the cali­bration and starts over. Resetting the communication
module will abort sensor replacement.

3 SEC 3 SEC 3 SEC 3 SEC

ACCEPT ZERO ACCEPT SPAN

REED SWITCH

ANALOG IN

LED

1

UNCONTROLLED ANALOG SIGNAL

A1555

Figure 29—Calibration Algorithms "A" and "F"

CALIBRATION ALGORITHM A
(Type Codes 1, 2, 3, 4) for Environmental Monitors

Normal Calibration

1. Activate the reed switch or input 1 on the communi­cation module. The red LED blinks at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.

2. The calibrate LED on the communication module
flashes at a 1 Hz rate, indicating that it is ready for
the zero input. The calibrate bit in the communica­tion module status word is set.

3. Perform the PathWatch zero calibration.

4. Activate the reed switch or input 1 on the communi­cation module. The red LED will blink at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.

5. The communication module records the uncalibrat­ed value in the calibration log and calibrates the
zero value. The calibrate LED goes on steady.

6. Perform the PathWatch span calibration.

7. The calibrate LED blinks at a 1 Hz rate when the
input increases.

8. Activate the reed switch or input 1 on the communi­cation module. The red LED blinks at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.

9. The communication module records the uncalibrat­ed value in the calibration log and calibrates the
span value.

10. The calibrate LED goes on steady.

11. Remove the span gas and re-adjust the zero poten­tiometer if necessary.

12. Activate the reed switch or input 1 on the communi­cation module. The red LED blinks at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.

13. The calibration is complete. The calibrate LED
turns off and the calibrate bit in the status word is
reset.

If the calibration is not completed within 12 minutes, the
previous calibration values are restored and the calibra­tion is logged as aborted. The calibrate LED blinks at a
4 Hz rate, the calibration fault bit in the status word is
set, and the calibrate bit is reset.

Calibration After Sensor Replacement

1. Open the communication module junction box
cover and press the sensor replacement switch.

2. The calibrate LED on the communication module
flashes at a 1 Hz rate, indicating it is ready for the
zero input. The calibrate bit in the status word is
set.

3. Perform the PathWatch zero calibration.

4. Activate the reed switch or input 1 on the communi­cation module. The red LED blinks at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.

5. The communication module records the uncalibrat­ed value in position one of the calibration log and
calibrates the zero value. The calibrate LED goes
on steady.

6. Perform the PathWatch span calibration.

7. The calibrate LED blinks at a 1 Hz rate when the
input increases.

8. Activate the reed switch or input 1 on the communi­cation module. The red LED blinks at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.

9. The communication module records the uncalibrat­ed value in the first register of the calibration log
and calibrates the span value.

10. The calibrate LED goes on steady.

11. Remove the span gas. Re-adjust the zero poten­tiometer if necessary.

12. Activate the reed switch or input 1 on the communi­cation module. The red LED blinks at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.

13. The calibration is complete. The calibrate LED
turns off and the calibrate bit in the status word is
reset.

Pressing the sensor replacement switch aborts the cali­bration and starts over. Resetting the communication
module will abort sensor replacement.

30

CALIBRATION ALGORITHM B (Type Codes 5, 6)

Normal Calibration

1. Hold the mode select button on the side of the
transmitter enclosure for about 10 seconds. (See
Figure 30.) The transmitter cycles through the set­points and the display starts to blink. Release the
mode select button. Input 1 on the communication
module goes active. The red LED on the communi­cation module blinks at a 2 Hz rate for 3 seconds
while input 1 is active.

2. The communication module calibrate LED flashes at
a 1 Hz rate to indicate that it is ready for the zero
input. The calibrate bit in the status word is set.

3. The transmitter calibrates the sensor zero value for
the 4 ma output.

4. The transmitter display is on steady and input 1
goes inactive.

5. The communication module records the uncalibrat­ed value in the calibration log and calibrates the
zero value. The calibrate LED goes on steady.

6. Apply the calibration gas to the sensor.

7. The transmitter display flashes. The communication
module calibrate LED blinks at a 1 Hz rate when the
input increases.

8. Input 1 goes active when the transmitter input is
stable.

9. The communication module records the uncalibrat­ed value in the calibration log.

10. The transmitter completes its calibration. Input 1
goes inactive when the transmitter display is steady.
The communication module calibrates the span
value and the calibrate LED goes on steady.

11. Remove the calibration gas.

12. The communication module waits until the analog
value drops below 4% full scale.

13. The calibration is complete. The calibrate LED
goes off and the calibrate bit in the status word is
reset.

If the calibration is not completed within 10 minutes, the
previous calibration values are restored and the calibra­tion is logged as aborted. The calibrate LED blinks at a
4 Hz rate, the calibrate bit in the status word is reset,
and the calibration fault bit in the status word is set.

If the sensor input drops to zero, a fault is signaled and
the calibration is aborted. The red communication mod­ule LED blinks at a 4 Hz rate, the calibration fault bit is
set, and the calibrate bit is reset.

CAUTION

If the sensor current should drop to zero during
calibration, synchronization between the communi­cation module and the transmitter may be lost,
depending on the calibration timing. Resetting the
communication module and the transmitter is
required, followed by another calibration.

Calibration After Sensor Replacement

1. Open the junction box cover and press the sensor
replacement switch. Close the cover.

2. The calibrate bit in the status word is set.

3. Replace the sensor and perform a normal calibra­tion.

The communication module will not signal a fault when
the input drops to zero due to removal of the sensor.
The calibration will not be aborted after 10 minutes.

Calibration values will be stored in the first register.

31 95-8424

3 SEC 3 SEC 3 SEC 3 SEC

ACCEPT ZERO ACCEPT SPAN

3O SEC MIN

3O SEC MIN

3O SEC MIN

RECORD SPAN

TRENDING SPAN

REED SWITCH

ANALOG IN

LED

U8800 INPUT

ANALOG IN
LED

IN ONE

ACCEPT ZERO ACCEPT SPAN

3 SEC

3 SEC

OLD SPAN

CALIBRATED SPAN

1

SEC

UNCONTROLLED ANALOG SIGNAL

UNCONTROLLED ANALOG SIGNAL

A1555

A1555

Figure 30—Calibration Algorithm "B"

CALIBRATION ALGORITHM C
(Type Codes 7, 8, 9, 10)

Normal Calibration

1. Apply the zero gas. (See Figure 31.)

2. Activate the reed switch or input 1 for at least 4 sec­onds. The red LED blinks at a 2 Hz rate for 3 sec­onds while the reed switch is closed.

3. The calibrate LED on the communication module
flashes at a 1 Hz rate, indicating it is ready for the
zero input. The calibrate bit in the status word is
set.

4. Wait 4 seconds.

5. The communication module records the uncalibrat­ed value in the calibration log and calibrates the
zero value. The calibrate LED goes on steady.

6. Apply the calibration gas.

7. The calibrate LED blinks at a 1 Hz rate when the
input increases.

8. Wait for the sensor input to be stable for 30 sec­onds.

9. The communication module records the uncalibrat­ed value in the calibration log and calibrates the
span value.

10. The calibrate LED goes on steady.

11. Remove the calibration gas.

12. The communication module waits until the analog
value drops below 4% full scale.

13. The calibration is complete. The calibrate LED
turns off and the calibrate bit in the status word is
reset.

If the calibration is not completed within 12 minutes, the
previous calibration values are restored and the calibra­tion is logged as aborted. The calibrate LED blinks at a
4 Hz rate, the calibrate bit in the status word is reset,
and the calibration fault bit is set.

Calibration After Sensor Replacement –
Combustible Gas

1. Open the junction box cover and press the sensor
replacement switch for about 1 second.

2. The calibrate LED on the communication module
flashes at a 1 Hz rate, indicating it is ready for the
zero input. The calibrate bit in the status wor d is set.

3. Switch the transmitter to calibrate and connect a
voltmeter to the test points.

4. Replace the sensor and wait 5 minutes for the sen­sor output to stabilize.

5. Adjust the zero output for 0.40 vdc (4 ma).

6. Switch the transmitter to normal to set the sensor
analog zero.

7. Activate the reed switch or input 1 on the communica­tion module for 4 seconds. The red LED blinks at a 2
Hz rate for 3 seconds while the reed switch is closed.

8. The communication module records the uncalibrated
value in position one of the calibration log and calibrates
the zero value. The calibrate LED goes on steady.

9. Switch the transmitter to calibrate.

10. Apply the calibration gas and wait for the output to
stabilize.

11. Adjust the span to 1.2 vdc (12 ma) if 50% LFL gas
is used.

12. Switch the transmitter to normal to set the sensor
analog span value. The red LED blinks at a 1 Hz
rate when the input goes high.

13. Activate the reed switch or input 1 on the communi­cation module. The red LED blinks at a 2 Hz rate
for 3 seconds while the reed switch is closed.

14. The communication module records the uncalibrat­ed value in the first register of the calibration log
and calibrates the span value.

15. The calibrate LED goes on steady. Remove the cal­ibration gas and meter and close the cover.

16 The communication module waits until the analog

value drops below 4% full scale. The calibration is
complete. The calibrate LED turns off and the cali­brate bit in the status word is reset.

Pressing the sensor replacement switch aborts the cali­bration and starts over.

32

3 SEC 3 SEC 3 SEC 3 SEC

3 SEC 3 SEC

ACCEPT ZERO ACCEPT SPAN

ACCEPT ZERO ACCEPT SPAN

REMOVE GAS

SPAN GAS

ZERO GAS

3O SEC MIN

3O SEC MIN

3O SEC MIN

RECORD SPAN

TRENDING SPAN

REED SWITCH

ANALOG IN

LED

REED SWITCH

ANALOG IN

LED

U8800 INPUT

ANALOG IN
LED

IN ONE

ACCEPT ZERO ACCEPT SPAN

3 SEC

3 SEC

OLD SPAN

CALIBRATED SPAN

1

SEC

UNCONTROLLED ANALOG SIGNAL

UNCONTROLLED ANALOG SIGNAL

UNCONTROLLED ANALOG SIGNAL

A1555

A1555

A1555

3O SEC MIN

Figure 31—Calibration Algorithm "C"

Calibration After Sensor Replacement – Toxic Gas

1. Open the junction box cover and press the sensor
replacement switch for about 1 second.

2. The calibrate LED on the communication module
flashes at a 1 Hz rate, indicating that it is ready for
the zero input. The calibrate bit in the status word is
set.

3. Replace the sensor and wait 5 minutes for the sen­sor output to stabilize.

4. Activate the reed switch or input 1 on the communi­cation module. The red LED blinks at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.

5. The communication module records the uncalibrat­ed value in position one of the calibration log and
calibrates the zero value. The calibrate LED is on
steady.

6. Apply the calibration gas.

7. The calibrate LED blinks at a 1 Hz rate when the
input increases.

8. Activate the reed switch or input 1 on the communi­cation module. The red LED blinks at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.

9. The communication module records the uncalibrat­ed value in the first register of the calibration log
and calibrates the span value.

10. The calibrate LED is on steady.

11. Remove the calibration gas and close the cover.

12. The communication module waits until the analog
value drops below 4% full scale.

13. The calibration is complete. The calibrate LED
turns off and the calibrate bit in the status word is
reset.

Pressing the sensor replacement switch aborts the cali­bration and starts over.

CALIBRATION ALGORITHM D
(Type Codes 11, 12, 13, 14)

Normal Calibration

1. Apply clean air (20.9% oxygen). See Figure 32.

2. Activate the reed switch or input 1 for at least 4 sec­onds. The red LED blinks at a 2 Hz rate for 3 sec­onds while the reed switch or input 1 is closed.

3. The calibrate LED blinks at a 1 Hz rate, indicating
that calibration has begun. The calibrate bit in the
status word is set.

4. The communication module waits 3 seconds.

5. The communication module records the uncalibrat­ed value in the calibration log and calibrates the
span value.

6. The calibrate LED goes on steady.

7. The communication module waits 3 seconds.

8. The calibration is complete. The calibrate LED turns
off and the calibrate bit in the status word is reset.

Calibration After Sensor Replacement

1. Open the junction box cover and press the sensor
replacement switch.

2. The calibrate LED on the communication module
blinks at a 1 Hz rate, indicating that it is ready for the
zero input. The calibrate bit in the status word is set.

3. Replace the sensor and set the sensor switch to zero.

4. Activate the reed switch or input 1. The red LED
blinks at a 2 Hz rate for 3 seconds while the reed
switch or input 1 is closed.

5. The communication module recor ds the uncalibrated
value in position one of the calibration log and cali­brates the zero value. The calibrate LED is on steady.

6. Set the zero switch on the sensor to normal. Apply
clean air (20.9% oxygen) to set the sensor analog
span value.

7. The calibrate LED blinks at a 1 Hz rate when the
input goes high.

8. Activate the reed switch or input 1 on the communi­cation module. The red LED blinks at a 2 Hz rate for
3 seconds while the reed switch or input 1 is closed.

9. The communication module records the uncalibrat­ed value in the first register of the calibration log
and calibrates the span value.

10. The calibration is complete. The calibrate LED turns
off and the calibrate bit in the status word is reset.

Pressing the sensor replacement switch aborts the cali­bration and starts over.

33 95-8424

CALIBRATION ALGORITHM E
(Type Codes 23 and 24)

1. Apply the zero input (4 ma).

2. Activate the reed switch or input 1 on the communica­tion module. (See Figure 33.) The red LED blinks at a
2 Hz rate while the reed switch or input 1 is closed.

3. After the reed switch has been closed for 3 sec­onds, the calibrate LED on the communication mod­ule flashes at a 1 Hz rate, indicating that the calibra­tion has begun. The calibrate bit in the communica­tion module status word is set.

4. The communication module records the uncalibrat­ed value in the calibration log and calibrates the
zero value. The calibrate LED goes on steady.

5. When the LED has been on steady for at least 3
seconds, the calibrate LED turns off and the cali­brate bit in the status word is reset.

If the calibration is not completed within 12 minutes, the
previous calibration values are restored and the calibra­tion is logged as aborted. The calibrate LED flashes at
a 4 Hz rate, the calibrate bit in the status word is reset
and the calibration fault bit is set.

CALIBRATION ALGORITHM F
(Type Codes 15 to 22)

Normal Calibration

1. Activate the reed switch on the communication
module. (See Figure 29.) The red LED blinks at a 2
Hz rate while the reed switch is closed.

2. After the reed switch has been closed for 3 sec­onds, the calibrate LED on the communication mod­ule flashes at a 1 Hz rate, indicating that it is ready
for the zero input. The calibrate bit in the communi­cation module status word is set.

3. Apply the zero input (4 ma).

4. Activate the reed switch on the communication
module. The red LED will blink at a 2 Hz rate while
the reed switch is closed.

5. After the reed switch has been closed for 3 sec­onds, the communication module records the uncal­ibrated value in the calibration log and calibrates
the zero value. The calibrate LED goes on steady.

6. Apply the span input.

7. The calibrate LED blinks at a 1 Hz rate when the
input increases.

8. Activate the reed switch on the communication
module. The red LED blinks at a 2 Hz rate while the
reed switch is closed.

9. The communication module records the uncalibrat­ed value in the calibration log and calibrates the
span value.

10. The calibrate LED goes on steady.

11. Remove the span input and return the analog input
to normal.

12. Activate the reed switch on the communication
module. The red LED blinks at a 2 Hz rate for 3
seconds while the reed switch is closed.

13. The calibration is complete. The calibrate LED
turns off and the calibrate bit in the status word is
reset.

If the calibration is not completed within 12 minutes, the
previous calibration values are restored and the calibra­tion is logged as aborted. The calibrate LED flashes at
a 4 Hz rate, the calibrate bit in the status word is reset
and the calibration fault bit is set.

34

3 SEC 3 SEC 3 SEC 3 SEC

3 SEC 3 SEC

3 SEC 3 SEC 3 SEC

ACCEPT ZERO ACCEPT SPAN

ACCEPT ZERO

ACCEPT ZERO ACCEPT SPAN

FRESH AIR

REMOVE GAS

SPAN GAS

ZERO GAS

3O SEC MIN

3O SEC MIN

3O SEC MIN

RECORD SPAN

TRENDING SPAN

REED SWITCH

ANALOG IN

LED

REED SWITCH
ANALOG IN

LED

REED SWITCH

ANALOG IN

LED

U8800 INPUT

ANALOG IN
LED

IN ONE

A1555

ACCEPT ZERO ACCEPT SPAN

3 SEC

3 SEC

OLD SPAN

CALIBRATED SPAN

1

SEC

UNCONTROLLED ANALOG SIGNAL

UNCONTROLLED ANALOG SIGNAL

UNCONTROLLED ANALOG SIGNAL

UNCONTROLLED ANALOG SIGNAL

A1555

A1555

A1555

3O SEC MIN

3 SEC 3 SEC 3 SEC

ACCEPT ZERO

ZERO

IN ONE
ANALOG IN

LED

A1555

UNCONTROLLED ANALOG SIGNAL

Figure 33—Calibration Algorithm "E"

3 SEC 3 SEC 3 SEC 3 SEC

3 SEC 3 SEC

3 SEC 3 SEC 3 SEC

ACCEPT ZERO ACCEPT SPAN

ACCEPT ZERO

ACCEPT ZERO ACCEPT SPAN

FRESH AIR

REMOVE GAS

SPAN GAS

ZERO GAS

3O SEC MIN

3O SEC MIN

3O SEC MIN

RECORD SPAN

TRENDING SPAN

REED SWITCH

ANALOG IN

LED

REED SWITCH

ANALOG IN

LED

REED SWITCH

ANALOG IN

LED

U8800 INPUT

ANALOG IN
LED

IN ONE

A1555

ACCEPT ZERO ACCEPT SPAN

3 SEC

3 SEC

OLD SPAN

CALIBRATED SPAN

1

SEC

UNCONTROLLED ANALOG SIGNAL

UNCONTROLLED ANALOG SIGNAL

UNCONTROLLED ANALOG SIGNAL

UNCONTROLLED ANALOG SIGNAL

A1555

A1555

A1555

3O SEC MIN

Figure 32—Calibration Algorithm "D"

Calibration After Sensor Replacement

1. Open the junction box cover and press the sensor
replacement switch.

2. The calibrate LED on the communication module
flashes at a 1 Hz rate, indicating it is ready for the
zero input. The calibrate bit in the status word is
set.

3. Replace the sensor and apply the zero input (4 ma).

4. Activate the reed switch on the communication
module. The red LED blinks at a 2 Hz rate for 3
seconds while the reed switch is closed.

5. The communication module records the uncalibrat­ed value in position one of the calibration log and
calibrates the zero value. The calibrate LED goes
on steady.

6. Apply the span input.

7. The calibrate LED blinks at a 1 Hz rate when the
input increases.

8. Activate the reed switch on the communication
module. The red LED blinks at a 2 Hz rate for 3
seconds while the reed switch is closed.

9. The communication module records the uncalibrat­ed value in the first register of the calibration log
and calibrates the span value.

10. The calibrate LED goes on steady.

11. Remove the span input and return the analog input
to normal.

12. Activate the reed switch on the communication
module. The red LED blinks at a 2 Hz rate for 3
seconds while the reed switch is closed.

13. The calibration is complete. The calibrate LED
turns off and the calibrate bit in the status word is
reset.

Pressing the sensor replacement switch aborts the cali­bration and starts over. Resetting the communication
module will abort sensor replacement.

Section IX

System Maintenance

ROUTINE MAINTENANCE

To ensure reliable protection, it is important to check
and calibrate the system on a regularly scheduled
basis. The frequency of these checks is determined by
the requirements of the particular installation.

MANUAL CHECK OF OUTPUT DEVICES

Fault detection circuitry continuously monitors for prob­lems that could prevent proper system response.
However, this circuitry does not monitor exter nal
response equipment or the wiring to these devices. It is
important that these devices be checked initially when
the system is installed, as well as periodically during the
on-going maintenance program.

CHECKOUT IN NORMAL MODE

The system should be checked periodically in the
Normal mode to ensure that those items not checked by
diagnostic circuitry are functioning properly.

CAUTION

Be sure to secure all output devices that are actu­ated by the system to prevent unwanted activation
of this equipment, and remember to place these
same output devices back into service when the
checkout is complete.

O-RING MAINTENANCE

A rubber O-ring is used to ensure that the junction box
cover will seal tightly and provide protection against
water ingress. Periodically open the enclosure and
ckeck the O-ring for breaks, cracks and dryness. To test
the ring, remove it from the enclosure and stretch it
slightly. If cracks are visible, it should be replaced. If it
feels dry, a thin coating of lubricant should be applied.
When re-installing the ring, be sure that it is properly
seated in the groove on the housing. It is imperative that
this O-ring be properly installed and in good condition.
Failure to properly maintain it can allow water to enter the
enclosure and cause premature failure. A coating of
lubricant should also be applied to the threads on the
cover before re-assembling the enclosure. This will both
lubricate the threads and help to prevent moisture from
entering the enclosure.

35 95-8424

CAUTION

The O-ring should be lubricated with a silicone free
polyalphaolefin grease. The use of other lubri­cants is not recommended, since they can
adversely affect the performance of some sensors.
Under no circumstances should a lubricant or com­pound containing silicone be used on systems
using catalytic type combustible gas sensors.

SENSOR REPLACEMENT

Declassify the area or remove power to the detector
prior to replacing the sensor in a hazardous area.

To replace the sensor:

1. Remove the cover from the communication module
enclosure and press the sensor replacement switch
on the circuit board. The calibration bit is set in the
status word.

Pressing the sensor replacement switch prevents
the communication module from generating a fault
signal when the input drops to zero due to removing
the sensor. In addition, the calibration will not be
aborted if the calibration procedure is not complet­ed within 12 minutes.

2. Replace the sensor or sensing element.

3. Calibrate the sensor using the normal calibration
procedure.

NOTE

Compare part numbers to be sure that the correct
replacement sensor is being used.

REPLACEMENT PARTS

Eagle devices are not designed to be repaired in the
field. If a problem should develop, first carefully check
for proper wiring, programming and calibration. If it is
determined that the problem is caused by an electronic
defect, the device must be returned to the factory for
repair.

NOTE

When replacing a device, be sure that the rocker
switches on the replacement are the same as the
original. Remove power before removing or plug­ging in the replacement unit. When a communica­tion module or DCU is replaced, the type and con­figuration codes must be down loaded.

DEVICE REPAIR AND RETURN

Prior to returning devices or components, contact the
nearest local Detector Electronics office so that an RMI
(Return Material Identification) number can be assigned.
A written statement describing the malfunction must
accompany the returned device or component to expe­dite finding the cause of the failure, thereby reducing the
time and cost of the repair. Pack the unit or component
properly. Use sufficient packing material in addition to
an antistatic bag or aluminum-backed cardboard as pro­tection from electrostatic discharge.

Return all equipment transportation prepaid to the
Minneapolis location.

OFFICE LOCATIONS

Detector Electronics Corporation
6901 West 110th Street
Minneapolis, Minnesota 55438 USA
Telephone [phone] or (800) 765-FIRE
Telex 6879043 DETEL UW
Cable DETRONICS
Facsimile [phone]

Detector Electronics Corporation
13949 Williams Road
P. O. Box 1329
Glen Ellen, California 95442 USA
Telephone [phone]
Facsimile [phone]
Voice Mail Box Number 930

Detector Electronics Corporation
466 Conchester Highway
Aston, Pennsylvania 19014 USA
Telephone [phone]
Facsimile [phone]

Detector Electronics Corporation
3000 Wilcrest
Suite 145
Houston, Texas 77042 USA
Telephone [phone]
Facsimile [phone]

Detector Electronics (UK) Limited
Riverside Park, Poyle Road
Colnbrook
Slough, Berkshire
SL3 OHB
ENGLAND
Telephone [phone]
Telex 848124 GRAVIN G
Facsimile 01753 684540

36

Det-Tronics France
La Valette
Rue du Cimetiere
78790 Septeuil
FRANCE
Telephone [phone]
Facsimile 33 1 3497 0648

Det-Tronics Deutschland
Deugra GmbH
Postfach 1457
Harkortstrasse 3
D-4030 Ratingen 1
GERMANY
Telephone [phone]
Direct 49 2102 405152
Facsimile 49 2102 405151
Telex 8589029

Detector Electronics Southern Europe
Ciodue – FSI
V.le De Gasperi, 44
20010 Bareggio (MI)
ITALY
Telephone [phone]
Telephone [phone]
Facsimile 02 90361068

Detector Electronics
108, Sai Prasad Complex
Opp. Khar Railway Station
Khar (W)
Bombay 400 052
INDIA
Telephone [phone]
Facsimile (91) 22 649 7775

Det-Tronics Scandinavia AB
Costerweg 5
P O Box 46
6700 AA Wageningen
THE NETHERLANDS
Telephone [phone]
Facsimile 31 8370 27308

117333 Moscow

Gubkina St, d.3

Gipronii Ran
Kidde Graviner
RUSSIA
Telephone [phone]
Facsimile 7 [phone]

Det-Tronics Scandinavia AB
Box 81
S-260 83 Vejbystrand
SWEDEN
Telephone [phone]
Facsimile 431-52236

Detector Electronics Corporation
C/O Walter Kidde Aerospace
143 Cecil Street
#15-01 G. B. Building
SINGAPORE 0106
Telephone [phone]
Facsimile (65) 226-16305

Det-Tronics Middle East
P O Box 44026
Abu Dhabi
U.A.E.
Telephone [phone]
Facsimile 971 2 393248

Det-Tronics South America.
AV17 Con Calle 72, No. 71-92
Apartado 10055
Maracaibo, VENEZUELA
Telephone [phone], -529154, -529749
Facsimile 58-61-529144
Telex 61331

Detector do Brasil
Avenida Geremario Dantas 493
Rio de Janeiro 22740-011
BRAZIL
Telephone [phone]
Facsimile (55) 21 392 5568

37 95-8424

ORDERING INFORMATION

For assistance in ordering or designing an Eagle sys­tem, contact the nearest Detector Electronics office.

When ordering, please specify:
EA2100CG – Eagle Communication Gateway

EA2200DCU EX – Eagle Digital Communication Unit for

combustible gas sensors

EA2200DCU UNIV – Eagle Digital Communication Unit

for toxic gas or oxygen sensors

EA2200DCU IS – Eagle Digital Communication Unit for

intrinsically safe sensors

EA2300CM – Eagle Communication Module
EA2400NE – Eagle Network Extender
EA2500RM – Eagle Relay Module

MOUNTING RACKS

A Q4004 Mounting Rack is required for installation of the
gateway. Q4004 racks can also house gas or flame
controllers in any combination. See Figures 22 and 23.

ACCESSORIES

Magnetic Calibration Tool
Silicone Free Grease
Open Frame Power Supply – 3.6 amperes at 24 vdc
Open Frame Power Supply – 12 amperes at 24 vdc
W4810 Power Supply mounted in explosion-proof

enclosure – 1.0 ampere at 24 vdc

REPLACEMENT PARTS

Part Number Description

006032-001 Communication Module without ribbon

cable (Communication Module/DCU)

006031-001 Terminal Board (Communication

Module/DCU)

006108-001 Transmitter Board (Combustible gas DCU)
006148-001 Network Extender Circuit Board
006122-002 5–1/4 inch Ribbon Cable (DCU)
101173-023 2 inch Standoff (DCU)
006122-001 2–3/4 inch Ribbon Cable

(Communication Module)

101173-021 1.625 inch Standoff (Communication

Module)

REFERENCE LIST

Additional information on Eagle 2000 products is avail­able in the following publications:

Specification Data Sheets:
90-1088 Communication Module

90-1093 DCU
90-1089 Network Extender
90-1097 Relay Module
90-1090 Gateway

Instruction Manuals:
95-8425 Communication Module

95-8426 DCU
95-8430 Network Extender
95-8423 Relay Module
95-8433 System Configuration
95-8453 System Configuration Matrix

38

DETECTOR ELECTRONICS CORPORATION

6901 West 110th Street
Minneapolis, Minnesota 55438 USA

Telephone [phone] or (800) 765-FIRE
Facsimile [phone]
Telex 6879043 DETEL UW
Cable Detronics

Printed in USA