RKI Instruments 72-2110RK-01, 72-2110RK-02, 72-2110RK, 72-2110RK-03 User manual

Beacon 110 Gas Monitor

Operator’s Manual

Part Number: 71-0110RK

Revision: J

Released: 6/26/20

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Product Warranty

RKI Instruments, Inc., warrants gas alarm equipment sold by us to be free from defects in materials,
workmanship, and performance for a period of one year from date of shipment from RKI Instruments,
Inc. Any parts found defective within that period will be repaired or replaced, at our option, free of
charge. This warranty does not apply to those items which by their nature are subject to deterioration
or consumption in normal service, and which must be cleaned, repaired, or replaced on a routine basis.
Examples of such items are:

Warranty is voided by abuse including mechanical damage, alteration, rough handling, or repair
procedures not in accordance with the operator’s manual. This warranty indicates the full extent of our
liability, and we are not responsible for removal or replacement costs, local repair costs, transportation
costs, or contingent expenses incurred without our prior approval.

a) Absorbent cartridges d) Batteries

b) Pump diaphragms and valves e) Filter elements

c) Fuses

THIS W ARRAN T Y IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER WARRANTIES
AND REPRESENTATIONS, EXPRESSED OR IMPLIED, AND ALL OTHER
OBLIGATIONS OR LIABILITIES ON THE PART OF RKI INSTRUMENTS, INC.,
INCLUDING BUT NOT LIMITED TO, THE WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL RKI INSTRUMENTS,
INC., BE LIABLE FOR INDIRECT, INCIDENTAL, OR CONSEQUENTIAL LOSS OR
DAMAGE OF ANY KIND CONNECTED WITH THE USE OF ITS PRODUCTS OR
FAILURE OF ITS PRODUCTS TO FUNCTION OR OPERATE PROPERLY.

This warranty covers instruments and parts sold to users by authorized distributors, dealers, and
representatives as appointed by RKI Instruments, Inc.

We do not assume indemnification for any accident or damage caused by the operation of this gas
monitor, and our warranty is limited to the replacement of parts or our complete goods.

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Table of Contents

Chapter 1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

About the Beacon 110 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Chapter 2: Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

External Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Internal Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Optional Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Chapter 3: Installation & Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Mounting the Beacon 110 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Wiring the Beacon 110 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Chapter 4: Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4 - 20 mA Signal Output Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Viewing and Resetting Min/Max Readings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Battery Charging (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Alarm Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Chapter 5: Configuration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Viewing & Changing Beacon 110 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

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Chapter 6: Input Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Selecting the Detector Head Input and Gas Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Chapter 7: Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Calibration Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Calibration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Replacing the Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Trouble Shooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Appendix A: Control Button Quick Reference Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

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Chapter 1: Introduction

Overview

This chapter briefly describes the Beacon 110 Gas Monitor. This chapter also describes the Beacon 110
Operator’s Manual (this document). Table 1 at the end of this chapter lists the specifications for the

Beacon 110.

About the Beacon 110

The Beacon 110 is a fixed mount, single channel continuous-monitoring gas monitoring controller. All
user adjustable parameters may be accessed using push button switches. Both direct connect (internal
amplifier type) detector heads and 4 - 20 mA transmitter (remote amplifier type) detector heads may be
used with the Beacon 110.

The Beacon 110 displays the current gas reading on an LCD display which is visible through a window
in the door. It includes audible and visual alarms that warn you of hazardous gas conditions. The alarm
circuit includes two levels of gas alarms. The fail circuit alerts you to failures in the gas detector heads
or Beacon 110. The Beacon 110 provides a 4 - 20 mA signal proportional to the target gas reading for
use by a recording device. Three sets of relay contacts, two controlled by the gas alarms and one by the
fail alarm, rated at 10 amps 115 VAC, 10 amps 220 VAC, and 10 amps 30 VDC are available for
controlling devices such as lights or horns or for controlling higher rated relays.

Three operating modes allow you to display and change setup and calibration settings and change the
detector head input type. They are Calibration Mode, Configuration Mode, and Input Mode.

About this Manual

The Beacon 110 Operator’s Manual uses the following conventions for notes, cautions, and warnings.

NOTE: Describes additional or critical information.

CAUTION: Describes potential damage to equipment.

WARNING: Describes potential danger that can result in injury or death.

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Specifications

Table 1 lists specifications for the Beacon 110.

Input Power 100/115/220V ~ ±10%, 50/60Hz, 0.2/0.2/0.1A

Construction (housing) Fiberglass/polyester with lexan window (NEMA 4X)

Dimensions 8.5 in. H x 6.5 in. W x 4.5 in. D

Weigh t 4.2 lbs.

Safety/Regulatory

Environmental Conditions • For indoor or outdoor locations (Type 4X)

Table 1: Beacon 110 Specifications

or
24 V ± 10%, 0.5A

(216 mm H x 165 mm W x 108 mm D)

C US
186718

• -20°C to 50°C (-4°F to 122°F) ambient

• Maximum relative humidity of 80%

• Main supply voltage fluctuations not exceeding ± 10% of nominal

• DC supply voltage fluctuations not exceeding ±10% of nominal

• Overvoltage Category II, Pollution Degree 2

Relays • Relay contacts rated for 10A @ 115/220V~ resistive or 10A @ 30V

User Controls • Three push button control switches

Signal Output • 4 to 20 mA, 500 ohms impedance max

resistive

• SPDT Form C

• One ON/OFF toggle switch

• One push button reset switch

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Chapter 2: Description

Overview

This chapter describes external and internal components of the Beacon 110 gas monitor.

External Description

This section describes the housing and all external components of the Beacon 110. For the purposes of
this description, the housing door is considered the front of the monitor.

Housing

The Beacon 110’s fiberglass housing is weather- and corrosion-resistant. It is suitable for installation
where general purpose equipment is in use. The housing door is hinged on the left side and is secured
by two latches on the right side. The display screen and status lights are visible through a window in
the housing door. Four mounting feet are attached to the back of the housing (one at each corner). The
mounting feet allow installation to a vertical surface. Two conduit hubs on the bottom of the housing
are for external wiring connections. In some cases, the instrument is shipped with the gas detector
already installed in the right conduit hub and factory wired to the appropriate terminals inside the unit.

CAUTION: Only use the two factory installed conduit hubs on the bottom of the housing for wire

entry into the housing. Do not drill the housing for any reason.

CAUTION: To avoid electrical interference, do not route detector and power wiring through the

same conduit hub.

Buzzer

The buzzer is on the bottom center of the housing in front of the reset switch. The buzzer sounds
audible alarms to warn you of gas alarms and instrument failures.

Reset Switch

The reset switch is on the bottom of the housing behind the buzzer. The reset switch serves three
functions:

• You can reset the alarm circuits for “latched” alarms after an alarm 1 or alarm 2 condition passes.

• You can silence the buzzer during an alarm 1 or an alarm 2 condition. You cannot silence a fail
condition.

• You can acknowledge and turn off the optional strobe in an alarm 1 or alarm 2 condition if it has
been installed and setup for this type of operation.

• You can display and reset the minimum and maximum readings that the Beacon 110 has
experienced since the last min/max reset or startup.

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Internal Description

DC Power
Polyfuse

Relay (3X)

Detector/
Transmitter
Terminal
Strips

Main PCB

Power

Sw itch

AC Fuses

Power Supply

Reset Switch

Control
Terminal
Strip

Alarm Terminal

Strip

Buzzer

Conduit Hubs (2X)

Control PCB

AC IN

Terminal

Strip

Figure 1: Beacon 110 Component Location

This section describes the internal components of the Beacon 110.

Main Printed Circuit Board (PCB)

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The main PCB is mounted inside the housing. The main PCB includes the power supply, terminal
strips, relays, fuses, and power switch.

Power Supply

The power supply is located on the left side of the main PCB. It takes AC line voltage supplied to the
Beacon 110 and converts it to 24 VDC which is used to run the Beacon 110.

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Terminal Strips

The Beacon 110 includes terminal strips for external and factory wiring connections. See “Wiring the
Beacon 110” on page 17 for detailed wiring procedures.

• AC In Terminal Strip. The AC in terminal strip is a 3-point terminal strip located in the lower left
corner of the main PCB. It facilitates wiring from the AC power source. Table 2 lists the function
of each terminal.

Table 2: Terminal Assignments for the AC In Terminal Strip

Terminal Connects to:

L Hot (line) wire from AC power source.

N Neutral wire from AC power source.

GEarth ground

• Alarm Terminal Strip. The 9-point alarm terminal strip is located along the bottom edge of the
main circuit board to the right of the AC in terminal strip (see Figure 1). It facilitates wiring
external alarm devices (horn, strobe, etc.) to the alarm relay contacts and includes common (C),
normally closed (NC) and normally open (NO) terminals for fail, alarm 1, and alarm 2.

• Controller Terminal Strip. The 8-point controller terminal strip is located along the bottom edge
of the main circuit board to the right of the alarm terminal strip (see Figure 1). The controller
terminal strip facilitates various internal and external wiring connections. Table 3 lists the function
of each terminal.

Table 3: Terminal Assignments for the Controller Terminal Strip

Terminal Connects to:

Alarm Buzzer + & - Factory installed buzzer (factory-wired)

Alarm Reset (2) Reset switch (factory-wired)

4 - 20 mA Output + + connection of 4 - 20 mA output

4 - 20 mA Output - - connection of 4 - 20 mA output

EXT DC (24V BATT) +

EXT DC (24V BATT) -

1

*

If DC power is used as the primary power source, do not make wiring connections to the

AC terminal strip.

+ connection from 24 VDC power source

- connection from 24 VDC power source

1

(or 24 V backup battery)

1

(or 24 V backup battery)

• Detector/Transmitter Terminal Strips. Three adjacent terminal strips are located along the right
side of the main circuit board above the controller terminal strip (see Figure 1). These three
terminal strips facilitate wiring connections to a detector or a 4 - 20 mA transmitter. The lower 4­point terminal strip is labelled LEL and is used to wire a combustible detector. The middle 2-point
terminal strip is labelled Oxy and is used to wire an oxygen detector. The top 3-point terminal strip
is labelled AMP and is used to wire 4 - 20 mA transmitters or direct connect preamp type
detectors. Although terminal strips are present for various types of detectors, only one detector
head at a time may be wired to the Beacon 110.

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Ground Stud

The threaded ground stud is used for making connections to earth ground. It is connected through the
main PCB to the G (ground) terminal on the AC in terminal strip. A kep nut on the stud may be
removed for installation of one or more lugs to make wiring connections. This stud is typically used to
connect the shield drain wire of shielded cable to earth ground at the Beacon 110.

Relays

The Beacon 110 includes three alarm relays located above the alarm terminal strip. They are from left
to right Fail, Alarm 1, and Alarm 2. The relays are form C, single-pole, double-throw (SPDT) and
rated for 10 amps at 115/220 VAC (resistive) or 10 amps at 30 VDC (resistive).

NOTE: You can select normally energized (N.EN) or normally de-energized (N.DE-EN) settings for

the alarm 1 and alarm 2 relays. See “Chapter 5: Configuration Mode” on page 31.

The fail relay is factory set as normally energized and is not user adjustable.

AC & DC Circuit Protection

Two AC fuses are used in the Beacon 110. The two fuses are located on the left side of the main PCB,
above the AC power terminal strip and below the power supply. They cut off the incoming AC power
in the event of a short circuit or other electrical fault which causes a high current draw in the Beacon

110. They are housed in vertical fuse holders and are held in the holder by a quarter turn cover. They

are labelled as F1 (left fuse) and F2 (right fuse) on the PCB silk-screen and are rated at 3 A, 250 V.

A polyswitch is used to protect the DC power input. It is located to the right of the relays and is
labelled on the PCB silkscreen as PS3. In the event of a short circuit or other electrical fault which
causes a high current draw in the Beacon 110, the polyswitch will interrupt the DC power if the unit is
powered from DC. When the fault situation is corrected, the polyswitch resets and the unit will
continue to operate. The polyswitch is not user serviceable.

Power Switch

The power switch is located to the right of the power supply and above the relays (see Figure 1 on page

8). The power switch turns the incoming AC power source on and off at the Beacon 110. When the

switch is up, the power switch is on.

CAUTION: The DC power input has no on/off switch and is not affected by the position of the power

switch.

Control PCB

The LCD display and control buttons are located on the control PCB. It is installed on the main PCB
with three standoffs. The control PCB is connected to the main PCB with the display cable which is a
ribbon cable terminated with 20 position rectangular connectors on each end. The display cable
connects to the control PCB on the back of the top edge and to the main PCB directly below the control
PCB.

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Figure 2: Control PCB Component Location

UP/YES DOWN/NO

ENTER

F

A1 A2

Control Switches

Fail LED

Alarm 1 LED

Alarm 2 LED

LCD Display

Contrast
Potentiometer

LCD Display

The LCD display is located at the top of the control PCB. It indicates the current gas reading and
displays messages and parameters in the Beacon 110’s operating modes.

Contrast Potentiometer

The contrast potentiometer is located to the right of the LCD display. It is used to adjust the contrast of
the LCD. If the background of the LCD appears so dark that the characters are not visible or if the
characters are too dim, turn the adjustment screw on the potentiometer clockwise or counterclockwise
until the desired visibility is obtained.

Control Buttons

The Beacon 110 includes three push button switches that allow you to enter the Beacon 110’s
operating modes, navigate through the modes, update settings, and save changes to the settings. The
push button switches are located along the bottom edge of the control PCB (see Figure 2). The UP/
YES button is on the left, the DOWN/NO button is in the middle, and the ENTER button is on the
right.

Table 4: Beacon 110 Control Button Functions

Switch Function

UP/YES • Saves settings

• Changes the displayed setting

• Enters Calibration Mode

• Enters Input Mode (press with DOWN/NO button)

• Enters Configuration Mode (press with ENTER button)

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Table 4: Beacon 110 Control Button Functions

Switch Function

DOWN/NO • Cancels setting changes

• Changes the displayed setting

• Enters Input Mode (press with UP/YES button)

• Displays the Information Screen

ENTER • Initiates operations

• Enters Configuration Mode (press with UP/YES button)

• Accepts displayed parameters

Status LEDs

The Beacon 110 includes three active status LEDs that are located above the display (see Figure 1 on
page 8). Two LEDs, labelled RX and TX, to the right of those described below, are not active.

• Fail LED

The fail LED turns on when the Beacon 110 is experiencing a fail condition. A fail condition can
be caused by a detector failure or low detector signal.

• Alarm 1 LED

The alarm 1 LED is on when the Beacon 110 is experiencing an alarm 1 condition.

• Alarm 2 LED

The alarm 2 LED is on when the Beacon 110 is experiencing an alarm 2 condition.

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Optional Accessories

Strobe Terminal Strip

Figure 3: Strobe Terminal Strip Location

This section describes the optional accessories available for the Beacon 110. Both optional accessories
are wired to the Strobe Terminal Strip as shown below.

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Alarm Strobe

Figure 4: Beacon 110 with Alarm Strobe

Alarm Strobe

The Beacon 110 can be ordered with a red alarm strobe light installed on the top of the housing. The
Beacon 110 retains its NEMA 4X rating with the strobe installed. Strobe operation can be programmed
in Configuration Mode (see “Chapter 5: Configuration Mode” on page 31). The outline and mounting
dimensions of the Beacon 110 with the optional alarm strobe mounted are the same as the standard
Beacon 110 without the strobe. See Figure 6 for outline and mounting dimensions.

Horn/Strobe

The Beacon 110 can be ordered with a horn/strobe. This optional horn/strobe allows the user to have
both a strobe and a horn connected to the “Strobe” terminals of the Beacon 110. If the horn/strobe is
not factory installed, it also allows the user to mount the horn/strobe away from the Beacon 110 so that
it can be somewhere more visible/audible. Strobe operation can be programmed in Configuration
Mode (see “Chapter 5: Configuration Mode” on page 31).

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+

Dimensions S hown in Inches

-

5.97

6.81

4.83

6.17

Strobe Terminal Strip

Figure 5: Horn/Strobe Wiring and Dimensions

NOTE: See “Chapter 3: Installation & Startup” on page 16 for complete Beacon 110 installation

instructions.

CAUTION: Do not adjust the strobe b rightness or the horn volume at the strobe/horn, as this ma y

overload the Beacon 110 strobe control circuit.

The optional horn/strobe is generally not factory installed and needs to be installed by the user. The
following instructions describe the installation of the horn/strobe. If the horn/strobe is factory installed,
the following instructions do not apply.

1. Mount the horn/strobe in the desired location.

2. Install an appropriately rated cable bushing or conduit to the left conduit hub on the bottom of the
Beacon 110 housing.

3. Install an appropriately rated cable bushing or conduit at the horn/strobe.

4. Run a cable or wires in conduit from the horn/strobe to the Beacon 110 through the left conduit
hub.

5. Connect the wires to the strobe terminal strip as shown in the figure below.

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Chapter 3: Installation & Startup

1.83

4.00
.30 Dia. x .50Slot, 4X

1.70

7.20

3/4 Conduit Hub (2X)

Note: AllDimensions in Inches

3.03

1.47

10.00 8.94 8.50

4.50

Figure 6: Beacon 110 Dimensions

Overview

This chapter describes procedures to mount the Beacon 110 Gas Monitor, make wiring connections to
the monitor, and start up the monitor.

WARNING: Perform all installation and start-up procedures in a “fresh air” environment

(environment known to be free of combustible gas, toxic gas, and of normal oxygen
content). The Beacon 110 is not in operation as a gas m onitoring system until the
start-up procedure is complete.

Mounting the Beacon 110

Perform the following procedure to install the instrument housing at the mounting site.

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1. Select the mounting site. When you select the mounting site consider the following factors:

• Is an AC or DC power source available?

• Is there enough room to open the housing door and make wiring connections through the con-

duit hubs at the bottom of the housing?

• Are the display screen and status lights visible?

2. If necessary, close and latch the housing door.

3. Position the monitor on a vertical surface at eye level (4 1/2 to 5 feet from the floor).

4. Insert 1/4 in. or 5/16 in. screws through the slots in the mounting feet at each corner of the housing
to secure the housing to the mounting surface.

Wiring the Beacon 110

This section describes procedures to connect the AC power source, DC power source, external
alarm(s), recorder, and detector head.

WARNING: Make all connections to the Beacon 110 before you plug in or turn on the AC or DC

power source. Before you make any wiring adjustments, always verify that all
power sources are not liv e.

Routing Wiring Into the Beacon 110 Housing

Wiring must be brought into the housing through one of the two factory-installed conduit hubs on the
bottom of the housing.

drill into the Beacon 110 housing for any reason. Drilling the Beacon 110 housing and routing

Do not
wiring through holes not factory drilled will void the warranty

• Damage to internal components from the drilling process.

• Moisture damage to internal components from poorly sealed holes.

• Unpredictable Beacon 110 behavior due to EMI/RFI interference caused by wires routed across
the PCBs.

• Possible shorting of Beacon 110 components due to wires routed across the PCBs.

and could result in:

Connecting the AC Power Source

NOTE: If you are using DC power as the primary power source, go to the next section, “Connecting

the DC Power Source”.

The AC in terminal strip will accept 24 - 14 AWG wire. All connections to building electrical systems
must be installed in accordance with local requirements and must be installed by qualified personnel. If
this equipment is used in a manner not specified by the manufacturer, the protection provided by the
equipment may be impaired. Install an appropriate switch or circuit breaker in the AC line close to the
Beacon 110 that meets the local electrical code and within easy reach of the operator. The switch or
circuit breaker must be marked as the disconnecting device for the Beacon 110.

Perform the following procedure to connect the AC power source to the Beacon 110.

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Figure 7: AC Power Wiring

Ground

Neutral

Hot (Line)

AC In
Terminal
Strip

L

GN

100 VAC, 50/60 Hz

or

115 VAC, 50/60 Hz

or

220 VAC, 50/60 Hz

WARNING: Verify that the p ower so urce is unplugged or t urned o f f bef or e you continu e with this

procedure.

1. Turn off or unplug all incoming power to the Beacon 110.

2. Open the housing door, then place the power switch in the OFF position.

CAUTION: The power switch does not control DC input power.

3. Install an appropriately rated cable bushing or conduit to the left conduit hub on the bottom of the
Beacon 110 housing.

CAUTION: Only use the two factory installed conduit hubs on the bottom of the housing for wire

entry into the housing. Do not drill the housing for any reason. See “Routing Wiring
Into the Beacon 110 Housing” on page 17 for more information.

4. Locate the 3-point AC in terminal strip in the lower left corner of the main PCB (see Figure 1 on
page 8). The terminals are labelled L, N, and G.

5. Guide the AC power cord or wires through the left conduit hub on the bottom of the Beacon 110
housing.

CAUTION: Do not route power and detector he ad wiring through the same conduit hub. The power

wiring may disrupt the transmission of the detector head signal to the monitor.

6. Connect the AC wires to the AC power terminal strip as shown in Figure 7 below.

Connecting the DC Power Source

WARNING: Verify that the p ower so urce is unplugged or t urned o f f bef or e you continu e with this

procedure.

DC power may be used as a primary power source. If DC power (connected to the External DC In
terminals) is the primary power source, DO NOT connect AC power to the AC In terminal strip.

A 24 VDC battery (connected to the External DC in terminals) may also be used as a backup power
source if AC power (connected to the AC In terminal strip) is the primary power source. If your

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Figure 8: DC Power Wiring

EXT DC

(24V BATT)

+ -

+

-

24 VDC

External DC In Terminals

on Controller Terminal Strip

Beacon 110 does not include the battery charging feature, you may use a self contained 24 VDC
backup that keeps its batteries charged while AC power is on and recharges the batteries when AC
power returns after a power failure. If your Beacon 110 includes the battery charging feature, see
“Battery Charging (Optional)” on page 26 for a complete description of this feature and what type of
battery to use.

WARNING: The External DC In terminals on the controller termin al strip are only intended for

connecting a battery or a 24 VDC supply to the Beacon 110. Do not connect any
horns or st robes to the External DC In terminals on the controller terminal strip.

1. Turn off or unplug all incoming power to the Beacon 110.

2. Open the housing door, then place the power switch in the OFF position.

CAUTION: The power switch does not control DC input power.

3. Locate the DC power terminals on the controller terminal strip in the lower right corner of the
main PCB (see Figure 1 on page 8). They are labelled EXT DC + and EXT DC -.

4. Install an appropriately rated cable bushing or conduit to the left conduit hub on the bottom of the
Beacon 110 housing.

CAUTION: Only use the two factory installed conduit hubs on the bottom of the housing for wire

5. Guide a DC power cord or wires through the conduit hub.

CAUTION: Do not route power and detector he ad wiring through the same conduit hub. The power

6. Connect the DC wires to the controller terminal strip as shown in Figure 8.

NOTE: The Beacon 110 will operate from the DC input down to 18.5 volts. If a self contained

entry into the housing. Do not drill the housing for any reason. See “Routing Wiring
Into the Beacon 110 Housing” on page 17 for more information.

wiring may disrupt the transmission of the detector head signal to the monitor.

backup battery is used, see its operator’s manual for a description of its recharging
characteristics. If your Beacon 110 includes the battery charging feature and a backup
battery is used, the Beacon 110 will recharge the battery when AC power has returned after
a power failure. See “Battery Charging (Optional)” on page 26 for a complete description of
the battery charging feature.

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NO NC C

Beacon 110
Alarm Terminal Strip

(+) H

(-) N

External Power

Source

External Alarm Device

ALARM-1

NO NC C

FAIL

NO NC C

ALARM-2

Figure 9: Typical Alarm Device Wiring

Connecting External Alarms

Perform the following procedure to connect external alarms to the Beacon 110. The relays are form C,
single-pole, double-throw (SPDT) and rated for 10 amps at 115/220 VAC (resistive) or 10 amps at 30
VDC (resistive).

WARNING: Do not conn ect external alarms to the External DC In terminals on the controller

terminal strip.

1. Turn off or unplug all incoming power to the Beacon 110.

2. Open the housing door, then place the power switch in the OFF position.

CAUTION: The power switch does not control DC input power.

3. Locate the alarm terminal strip. See Figure 1 on page 8.

4. Install an appropriately rated cable bushing or conduit in the left conduit hub on the bottom of the
Beacon 110 housing. This hub is typically used for power wiring and may already have conduit or
other fittings installed because of this.

CAUTION: Only use the two factory installed conduit hubs on the bottom of the housing for wire

entry into the housing. Do not drill the housing for any reason. See “Routing Wiring
Into the Beacon 110 Housing” on page 17 for more information.

5. Guide the wiring of the external alarm through the left conduit hub on the bottom of the Beacon
110 housing.

CAUTION: Do not route the external alarm wiring and detector wiring through the same conduit

hub. The external alarm wir ing ma y disr upt the tra nsmiss ion of t he dete ctor s ignal t o
the Beacon 110.

6. Connect the leads from the external alarm to the appropriate terminals on the alarm terminal strip
as shown in Figure 9 to obtain the desired operation.

7. Repeat steps 5 and 6 for additional alarm devices.

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Figure 10: Recorder Output Wiring

4-20 mA

OUTPUT

Recording Device,
500 Ohms Max
Impedance

Connecting Recorders

Perform the following procedure to connect an analog signal recording device to the Beacon 110. The
output at the recorder output terminals is a 4 - 20 mA signal that is proportional to the detection range
of the detector head connected to the Beacon 110.

1. Turn off or unplug incoming power to the Beacon 110.

2. Open the housing door, and locate the recorder output terminals on the controller terminal strip.
See Figure 1 on page 8. They are labelled 4 - 20 mA OUTPUT + and 4 - 20 mA OUTPUT -.

3. Place the power switch in the off position.

CAUTION: The power switch does not control DC input power.

4. Install an appropriately rated cable bushing or conduit in the left conduit hub on the bottom of the
Beacon 110 housing. This hub is typically used for power wiring and may already have conduit or
other fittings installed because of this.

CAUTION: Only use the two factory installed conduit hubs on the bottom of the housing for wire

entry into the housing. Do not drill the housing for any reason. See “Routing Wiring
Into the Beacon 110 Housing” on page 17 for more information.

5. Guide the wiring from the recording device through the left conduit hub on the bottom of the
Beacon 110 housing.

6. Connect the leads from the recording device to the analog output terminal strip as shown in
Figure 10 below.

Connecting RKI Detector Heads

Perform the following procedure to connect an RKI detector head to the Beacon 110.

1. Turn off or unplug power to the Beacon 110.

2. Open the Beacon 110 door and place the power switch in the off position.

3. See the detector head operator’s manual for instructions on how to connect the detector head to a
controller.

4. Install an appropriately rated cable bushing or conduit in the right conduit hub on the bottom of the
Beacon 110 housing.

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CAUTION: Only use the two factory installed conduit hubs on the bottom of the housing for wire

entry into the housing. Do not drill the housing for any reason. See “Routing Wiring
Into the Beacon 110 Housing” on page 17 for more information.

5. Route the wires in conduit or shielded cable from the detector head through the right conduit hub
into the Beacon 110. See Table 5 below for wire size and distance guidelines.

6. Unshielded twisted pair cable in conduit or shielded twisted pair cable is recommended for all the
direct connect detector heads. For the LEL detector, pair and twist the R & B wires and the W & G
wires. Shielded cable or wires in conduit are recommended for the 2-wire and 3-wire 4 - 20 mA
transmitters.

7. Connect the wires from the detector head to the appropriate detector/transmitter terminals. See the
detector head operator’s manual and the Beacon 110 Detector Head Specifications sheet for
detector head connections to the Beacon 110. If shielded cable is used, connect the cable shield’s
drain wire at the Beacon 110 to the ground stud on the main PCB.

CAUTION: Do not route power and detector he ad wiring through the same conduit hub. The power

wiring may disrupt the transmission of the detector head’s to the Beacon 110.

Table 5: Wire Size Guidelines for RKI Detector Head Wiring

Number of

Detector Head Type

Direct Connect LEL 4 500 ft. 1,000 ft. 2,000 ft.

Direct Connect Oxygen 2 500 ft. 1,000 ft. 2,000 ft.

Direct Connect H2S 2 500 ft. 1,000 ft. 2,000 ft.

Direct Connect CO 2 500 ft. 1,000 ft. 2,000 ft.

Direct Connect ESM-01 type 2 500 ft. 1,000 ft. 2,000 ft.

2-Wire 4 - 20 mA Transmitter 2 2,500 ft. 5,000 ft. 8,000 ft.

3-Wire 4 - 20 mA Transmitter 3 2,500 ft. 5,000 ft. 8,000 ft.

Wires to

Controller

Max Distance

to Controller

w/18 Gauge

Wire

Max Distance

to Controller

w/16 Gauge

Wire

Max Distance

to Controller

w/14 Gauge

Wire

Connecting User-Supplied 4 to 20 mA Transmitters

The Beacon 110 may be used with a user supplied 2-wire or 3-wire source type 4 - 20 mA transmitter
which runs on 24 VDC. When this is done, the Beacon 110 is normally setup at RKI Instruments with
the following parameters: item name (example: Pressure), unit of measure (example: PSI), and full
scale (example: 100). For example, a Beacon 110 can be setup for “Pressure” with units of “PSI” and a
full scale of “100” PSI.

Perform the following procedure to connect a 4 to 20 mA transmitter that you supply to the Beacon

110.

1. Turn off or unplug power to the Beacon 110.

2. Open the Beacon 110 door and turn off the power switch.

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3-Wire Connection 2-Wire Connection

(DC Ground)

4 - 20 mA

+ 24 VDC

4 - 20 mA

+ 24 VDC

3-wire 4 - 20 mA
Transmitter

2-Wire 4 - 20 mA
Transmitter

BLK
GRN
WHT
RED

GRN
WHT

L
E
L

A
M
P

O
X
Y

S

BLK
GRN
WHT
RED

GRN
WHT

L
E
L

A
M
P

O
X
Y

S

Figure 11: Generic 4 - 20 mA Transmitter Wiring

3. See the transmitter’s instruction manual for instructions on how to connect wires to the transmitter.

4. Install an appropriately rated cable bushing or conduit in the right conduit hub on the bottom of the
Beacon 110 housing.

CAUTION: Only use the two factory installed conduit hubs on the bottom of the housing for wire

entry into the housing. Do not drill the housing for any reason. See “Routing Wiring
Into the Beacon 110 Housing” on page 17 for more information.

5. Route the wires from the transmitter through the right conduit hub into the Beacon 110.

6. Connect the wires from the transmitter to the AMP terminal strip. Figure 11 below illustrates
typical transmitter wiring connections. See the transmitter instruction manual for controller
terminal connections. If shielded cable is used, connect the cable shield’s drain wire at the Beacon
110 to the ground stud on the main PCB.

CAUTION: Do not route power and transmitter wiring through the same conduit hub. The power

wiring may disrupt the transmission of the transmitter’s signal to the Beacon 110.

Start Up

Introducing Incoming Power

Perform the following procedure to place the Beacon 110 into normal operation.

1. Complete the mounting and wiring procedures described earlier in this chapter.

2. Complete all installation procedures described in the detector head or user supplied
4 - 20 mA transmitter operator’s manual.

3. Verify that all wiring connections are correct and secure and that the Beacon 110’s power switch is
in the OFF position.

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4. Plug in or turn on the incoming power source (AC or DC).

5. Turn on the power switch if AC power is used as primary power.

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METHANE

0 %LEL

6. The LCD display will indicate the firmware version when the Beacon 110 is first powered up and
will then count down a one minute warm-up period before normal operation begins. During
normal operation, the display will indicate the current gas reading and target gas. Verify that the
display is indicating the current gas reading and target gas after the warm-up period is complete
and normal operation begins, for example:

NOTE: To prevent unwanted alarms during warm up, the alarm circuits are not active during the

warm-up period.

7. Perform the start-up procedure for the RKI detector head or user supplied 4 - 20 mA transmitter as
described in the detector head or transmitter operator’s manual.

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Chapter 4: Operation

METHANE

0 %LEL

Overview

This chapter describes the Beacon 110 in normal operation. This chapter also describes the Beacon 110
in alarm 1, alarm 2, and fail conditions and suggests response to these conditions.

Normal Operation

Normal operation is defined as follows:

• The start-up procedure is complete.

• The Beacon 110 is not indicating an alarm 1, alarm 2, or fail condition.

• The Beacon 110 is not in Calibration, Configuration, or Input Mode.

During normal operation, the Beacon 110 simultaneously displays the current gas reading, unit of
measure, and target gas. The example below illustrates a typical LEL Beacon 110.

4 - 20 mA Signal Output Operation

The output at the 4 - 20 mA output terminals is a 4 - 20 mA signal that is proportional to the detection
range of the Beacon 110. During normal operation, this signal tracks the gas concentration on the
LCD.

There are several circumstances where the signal output will not track the display reading but will
behave as follows:

• When the Beacon 110 is in its warm-up period, the signal output will be fixed at 4 mA (zero) for
all gas types except oxygen. For oxygen types, the output will be fixed at 17.4 mA (20.9% oxygen)
while the Beacon 110 is in warm-up.

• When the Beacon 110’s gas type is changed, the Beacon 110 will enter Configuration Mode for
you to verify the parameter settings. When you exit Configuration Mode, the display will indicate
NEEDS CALIBRATION and will continue to indicate this until Calibration Mode is entered and
a calibration is performed. In this situation, the signal output will be fixed at 3.5 mA for all
versions other than oxygen and 17.4 mA for oxygen versions from the time Gas Type Mode is
entered until the Beacon 110 is calibrated and returns to normal operation.

• If you enter Calibration Mode, Configuration Mode, or Gas Type Mode, the signal output will be
fixed at 3.5 mA for all versions other than oxygen and 17.4 mA for oxygen versions until the
Beacon 110 returns to normal operation.

• If the Beacon 110’s input power decreases below 18.5 volts so that the Beacon 110 is in a low
power alarm, the signal output is fixed below 2.4 mA until the low power alarm is cleared.

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• If the Beacon 110 goes into a fail condition, after a 30 second delay, the signal output is fixed
below 2.4 mA until the fail alarm is cleared. During the 30 second delay, the output follows the
detector output. In the case of a downscale reading, the displayed gas reading will only go as low
as -10% of full scale but the signal output will continue to track the reading even if it’s lower than

-10% of full scale.

Viewing and Resetting Min/Max Readings

The reset switch may be used to view and reset the minimum and maximum gas readings.

NOTE: Minimum and maximum readings are reset if the instrument is turned off.

1. While the Beacon 110 is in normal operation, press and hold the reset switch button for 5 seconds.

2. The display will indicate the minimum reading on the bottom display line and the maximum
reading on the top display line for about 3 seconds before indicating <RESET> TO CLEAR.

3. To return to normal operation without resetting the minimum and maximum readings, do not press
the reset switch button and allow the unit to return to normal operation. It will return to normal
operation in about 5 seconds.

To reset the minimum and maximum readings, press and hold the reset switch button while the

<RESET> TO CLEAR message is on the display until the display indicates Min/MAX Is
RESET. Release the reset switch button.The unit will then return to normal operation in about 5

seconds.

Battery Charging (Optional)

The Beacon 110 has an optional backup battery charging feature. In order for this feature to be
included, the Beacon 110 must be ordered with this feature. Consult RKI Instruments, Inc. for ordering
information.

The battery charging circuit is designed to charge lead acid type batteries. If AC power is used as
primary power and a backup battery is connected to the Beacon 110’s EXT DC/24V BATT terminals
as shown in Figure 8 on page 19, the battery charging feature will charge the battery if it is depleted
and keep it charged with a charge current of approximately 100 mA.

CAUTION: When a battery is used as backup power and the charging feature is included in the

Beacon 110, do not use a non-rechargeable battery or backup battery that has a
charging feature. Use RKI backup battery 49-8102RK or an appropriately rated 24
VDC rechargeable lead acid type battery.

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Alarm Indications

NOTE: The Beacon 110 includes alarm on and alarm off delay settings for alarm 1 and alarm 2. The

alarm indications described in this section operate according to the factory set alarm
settings. See Table 7 on page 32 for all the factory settings.

Table 6: Visual and Audible Alarm Indications

Condition Cause Visual Indication(s)

1

Alarm 1

Alarm 2

Fail • Disconnected or misconnected

Increasing (decreasing for O

ing at or above the alarm 1 setpoint

1

Increasing gas reading at or above the
alarm 2 setpoint

detector head wiring

• Display reading at -10% of full
scale or lower

• Defective components

) gas read-

2

• Alarm 1 LED is on

• Gas reading alternates with
ALARM-1 message

• If installed and set to activate
for alarm 1, strobe flashes

• Alarm 2 LED is on

• Gas reading alternates with
ALARM-2 message

• If installed and set to activate
for alarm 2, strobe flashes

• Fail LED is on

• FAI L message replaces gas
reading

• If installed, strobe flashes

NOTE: There is a 30
second delay on the fail indi­cations.

Low Power DC power source less than 18.5 volts. • Fail LED is on

• LowPower message and
actual voltage of incoming DC
power

Audible

Indication

•Pulsing
tone

•Pulsing
tone

• Steady
tone

•None

1

If the Beacon 11 0 is in both an ala rm 1 and an alarm 2 condition, both alarm LEDs are on and the

*

display alternates between the gas reading and the ALMS 1&2 message.

NOTE: You can select normally energized (N. EN) or normally de-energized (N. DE-EN) alarm 1

and alarm 2 relay settings in Configuration Mode. The following sections describe the
standard factory setting for these relays which is N. DE-EN.

The fail relay is set as normally energized in the firmware and is not user-adjustable.

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Alarm 1 Condition

Alarm 1 Condition Indications

When the gas reading reaches the alarm 1 setpoint, the Beacon 110 senses an alarm 1 condition. The
Beacon 110 alerts you to an alarm 1 condition as follows:

• The alarm 1 LED turns on.

• The gas reading alternates with the ALARM-1 message.

• The buzzer sounds a pulsing tone.

• The alarm 1 relay energizes.

• If the optional strobe is installed and set to operate for alarm 1, it flashes.

Responding to an Alarm 1 Condition

1. Follow your established procedure for a low level combustible or toxic gas condition or a
decreasing oxygen concentration condition.

2. Oxygen alarms are factory set as self-resetting and will automatically clear when the oxygen
reading rises above the alarm 1 setpoint.

3. Alarms for all other gas types are factory set as latching. After the gas reading falls below (or rises
above for oxygen) the alarm 1 setpoint, press the reset switch to reset the alarm 1 circuit. Resetting
the alarm 1 circuit silences the buzzer, turns off the alarm 1 LED, returns the LCD to the normal
operation screen, de-energizes the alarm 1 relay, and turns off the strobe if it is installed and set to
operate for alarm 1.

NOTE: If the reset switch is pressed while the Beacon 110 is in an alarm 1 condition, the buzzer will

be silenced and the alarm 1 LED will flash. If the strobe is installed and its alarm 1
operation is set to CanReset in Configuration Mode, the strobe will turn off.

You cannot de-energize the alarm 1 relay until the gas reading falls below (above for
oxygen) the alarm 1 setpoint.

Alarm 2 Condition

Alarm 2 Condition Indications

When the gas reading reaches the alarm 2 setpoint, the Beacon 110 senses an alarm 2 condition. The
Beacon 110 alerts you to an alarm 2 condition as follows:

• The alarm 2 LED turns on.

• The gas reading alternates with the ALARM-2 message.

• The buzzer sounds a pulsing tone.

• The alarm 2 relay energizes.

• If the optional strobe is installed and set to operate for alarm 2, it flashes.

NOTE: If the Beacon 110 is in both an alarm 1 and alarm 2 condition, both the alarm 1 and alarm 2

LEDs will be on, the gas reading will alternate with the ALMS 1&2 message, and both
alarm relays will energize.

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Responding to an Alarm 2 Condition

1. Follow your established procedure for a high level combustible or toxic gas condition or an
increasing oxygen concentration condition.

2. Oxygen alarms are factory set as self-resetting and will automatically clear when the oxygen
reading rises above the alarm 2 setpoint.

3. Alarms for all other gas types are factory set as latching. After the gas reading falls below the
alarm 2 setpoint, press the reset switch to reset the alarm circuit. Resetting the alarm circuit
silences the buzzer, turns off the Alarm 2 LED, returns the LCD to the normal operation screen,
de-energizes the alarm 2 relay, and turns off the strobe if it is installed and set to operate for alarm

2.

NOTE: If the reset switch is pressed while the Beacon 110 is in an alarm 2 condition, the buzzer will

be silenced and the alarm 2 LED will flash but all other indications will remain unchanged.
If the strobe is installed and its alarm 2 operation is set to CanReset in Configuration Mode,
the strobe will turn off.

You cannot de-energize the alarm 2 relay until the gas reading falls below the alarm 2
setpoint.

Fail Condition

Fail Condition Indications

The Beacon 110 indicates a fail condition for any of the following:

• The detector head wiring is disconnected or incorrectly connected.

• The display reading is -10% of full scale or lower.

When the Beacon 110 senses a fail condition, it alerts you as follows:

• The fail LED turns on.

• The gas reading is replaced by the FAIL message.

• The buzzer sounds a steady tone.

• The fail relay de-energizes.

• If installed, the strobe flashes.

NOTE: The fail alarm has a 30 second delay.

Responding to a Fail Condition

NOTE: A fail condition cannot be reset using the reset switch.

1. Verify that the detector head wiring is correctly and securely connected.

2. If the detector head includes a replaceable plug-in sensor, verify that the replaceable plug-in sensor
is properly installed.

3. If necessary set the zero reading for your detector head as described in “Calibration Mode” on
page 38.

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Low DC Power Alarm

Low DC Power Alarm Indications

This section describes the audible and visual indications for a low DC power condition and suggests
response to a low DC power condition. This condition only applies when DC power is used as a
primary or backup power source.

The Beacon 110 senses a DC low power condition when the DC power source is 18.5 volts or less.

WARNING: While in a low power condition, the Beacon 110 is not an active gas monitor.

When the Beacon 110 senses a low DC power condition, it alerts you as follows:

• The fail LED turns on.

• The message LowPower is indicated on the top line of the LCD and the input voltage is displayed
on the bottom line of the LCD.

NOTE: The low DC power alarm cannot be cleared using the reset switch.

When the DC input voltage increases to 19.0 volts, the low DC power alarm is cleared and the Beacon
110 will begin its warm-up sequence.

Responding to a Low DC Power Condition

If DC power is the

1. For a temporary DC power source, disconnect primary DC power at the Beacon 110, then connect

a 24 VDC battery.

2. Determine and correct the cause of primary DC power loss.

When the DC power source rises above 19.0 volts, the Beacon 110 begins the warm up process.

3. Verify that the Beacon 110 enters normal operation after its warm-up sequence.

If DC power is the

1. If a non-rechargeable battery is used for backup, replace the battery.

2. Determine and correct the cause of primary AC power loss. When backup DC or primary AC
power is restored, the Beacon 110 begins the warm up process.

If the Beacon 110 was purchased with the battery charging feature, when AC power is restored, the
Beacon 110 charges the backup battery with a charge current of approximately 100 mA until it is
fully recharged. Charge time varies depending on the battery size and how much the battery was
depleted. Once the battery is fully charged, the Beacon 110 maintains the charge with the 100 mA
charge current.

3. Verify that the Beacon 110 enters normal operation after its warm-up sequence.

primary power source:

backup power source:

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Chapter 5: Configuration Mode

Enter
Config?

Overview

This chapter describes how to view and change Beacon 110 parameters using Configuration Mode. It
is accessed using the program buttons.

Configuration Mode includes a 5-minute time-out feature. If you do not press a control button for 5
minutes, the Beacon 110 automatically returns to normal operation.

NOTE: If the Beacon 110 returns to normal operation because of a time-out, it enters a warm-up

period just as it does when it is first turned on.

If you are installing a new Beacon 110, it has been set up at the factory. Use Configuration
Mode only if you want to change the Beacon 110’s setup. If you want to change the detector
type see “Chapter 6: Input Mode” on page 34.

Viewing & Changing Beacon 110 Parameters

1. While in normal operation, simultaneously press and hold the UP/YES and ENTER buttons for 5
seconds to enter Configuration Mode. Release the buttons when the following screen appears.

2. If you want to exit Configuration Mode, press and release the DOWN/NO button and the Beacon
110 will return to normal operation.

If you want to continue in Configuration Mode, press and release the UP/YES button. The target
gas and the full scale will be displayed for a few seconds before the first adjustable parameter, the
alarm 1 setpoint, is displayed.

3. If you want to change the currently displayed parameter, use the UP/YES and DOWN/NO buttons
to adjust it to the desired setting, then press ENTER to continue to the next parameter.

If the currently displayed parameter is OK, press the ENTER button to proceed to the next
parameter.

Table 7 lists the Beacon 110 parameters you can set. Table 7 also lists the factory set value for each
parameter.

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Table 7: Configuration Parameters

Parameter

(Factory Set Value)

ALARM-1 (level)
See the Beacon 110 Detector Head
Specification Sheet for the detector
head installed

ALARM-1 (activation)
(Decrease for oxygen, Increase for all
other types)

ALARM-1 (relay action)
(N. DE-EN)

ALARM-1 (relay reset)
(SELF-RST for oxygen, LATCH for
all other channel types)

A1Strobe
(None if no strobe is installed, Non
Reset if a strobe is installed)

Description

The gas reading at which the Beacon 110 initiates an alarm 1 condition.

Indicates if the alarm 1 circuit is activated by gas readings increasing (Increase)
or decreasing (Decrease) to the ALARM-1 Level.

If set as N. DE-EN, the alarm 1 relay is de-energized in normal operation and
energizes when an alarm 1 condition is initiated.
If set as N. EN, the alarm 1 relay is energized in normal operation and de-ener­gizes when an alarm 1 condition is initiated.

If set as LATCH, you must press the reset switch to reset the alarm 1 circuit
after the alarm 1 condition passes.
If set as SELF-RST, the Beacon 110 automatically resets the alarm 1 circuit
after the alarm 1 condition passes.

If set as None, there is no strobe operation.
If set as NonReset, it is not possible to turn off the strobe with the reset switch
while the Beacon 110 is in an alarm 1 condition.
If set as CanReset, the strobe can be turned off while the Beacon 110 is in an
alarm 1 condition by pressing the reset switch.

A1 OnDy (alarm 1 on delay)
(1 secs)

A1 OffDy (alarm 1 off delay)
(0 sec.)

ALARM-2 (level)
See the Beacon 110 Detector Head
Specification Sheet for the detector
head installed

ALARM-2 (activation)
(Increase)

ALARM-2 (relay action)
(N. DE-EN)

ALARM-2 (relay reset)
(SELF-RST for oxygen, LATCH for
all other channel types)

The amount of time the Beacon 110 delays activation of the alarm 1 circuit once
an alarm 1 condition is initiated.

The amount of time the Beacon 110 delays turning off the alarm 1 circuit once
an alarm 1 condition passes. This parameter appears only if the alarm 1 relay
reset setting is set to SELF--RST.

The gas reading at which the Beacon 110 initiates an alarm 2 condition.

Indicates if the alarm 2 circuit is activated by gas readings increasing (Increase)
or decreasing (Decrease) to the ALARM-1 Level.

If set as N. DE-EN, the alarm 2 relay is de-energized in normal operation and
energizes when an alarm 2 condition is initiated.
If set as N. EN, the alarm 2 relay is energized in normal operation and de-ener­gizes when an alarm 2 condition is initiated.

If set as LATCH, you must press the ENTER button to reset the alarm 2 circuit
after the alarm 2 condition passes.
If set as SELF-RST, the Beacon 110 automatically resets the alarm 2 circuit
after the alarm 2 condition passes.

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Table 7: Configuration Parameters (Continued)

Parameter

(Factory Set Value)

A2Strobe
(None if no strobe is installed, Non
Reset if a strobe is installed)

A2 OnDy (alarm 2 on delay)
(2 min for oxygen, 1 secs for all other
channel types)

A2 OffDy (alarm 2 off delay)
(0 sec.)

ZeroSupp
(0.0% of the detection range in terms
of the detection units for carbon
dioxide channel types, 0.5% oxygen
for oxygen channel type, 2.0% of the
detection range in terms of the
detection units for all other channel
types)

FILTER
(5 secs)

Description

If set as None, there is no strobe operation.
If set as NonReset, it is not possible to turn off the strobe with the reset switch
while the Beacon 110 is in an alarm 2 condition.
If set as CanReset, the strobe can be turned off while the Beacon 110 is in an
alarm 2 condition by pressing the reset switch.

The amount of time the Beacon 110 delays activation of the alarm 2 circuit once
an alarm 2 condition is initiated.

The amount of time the Beacon 110 delays turning off the alarm 2 circuit once
an alarm 2 condition passes. This parameter appears only if the alarm 2 relay
reset setting is set to SELF-RST.

The zero suppression feature helps prevent “jumpy” readings near the fresh air
reading.
For example, if the zero suppression setting for a combustible detector is 2.0%
LEL, the Beacon 110 will display a reading of 0% LEL for gas readings from ­2% LEL to 2% LEL.

The filter feature helps “smooth out” jumpy or noisy signals from the detector.
You can set the filter from 0 seconds to 60 seconds in 5 seconds increments.
The displayed gas reading is the average reading over the previous time period
defined by the filter setting. So if the filter is set to 5 seconds, the displayed gas
reading is the average over the past 5 seconds.

CAL Time
(15 mins)

The calibration time-out sets the amount of time after the last button push while
in Calibration Mode that the Beacon 110 will wait before returning to normal
operation. If the calibration time-out is set to 15 mins, then Beacon 110 will
return to normal operation automatically 15 minutes after the last button push.

4. When you have scrolled through all the adjustable parameters, SAVE IT? YES/NO appears on the
display.

5. To save the adjustments made, press and release the UP/YES button. Config Saved is indicated on
the display for a few seconds and the Beacon 110 returns to normal operation.

If you do not wish to save the adjustments, press and release the DOWN/NO button. The DO

OVER? YES/NO message will display. Press and release the DOWN/NO button. The ABORT?
YES/NO message will display.Press the UP/YES button to return to normal operation.

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Chapter 6: Input Mode

Select
Input?

Overview

This chapter describes how to use Input Mode to select the Beacon 110’s detector head input type and
the gas type. The detector head input type determines whether a direct connect type or a 4 - 20 mA
type of detector head will be used and the gas type determines the target gas and detection range.

Input Mode includes a 5-minute time-out feature. If you do not press a button for 5 minutes, the
Beacon 110 automatically returns to normal operation.

NOTE: If the Beacon 110 enters normal operation because of a program time-out, it enters a warm-

up period just as it does when it is first turned on.

Selecting the Detector Head Input and Gas Type

1. While in normal operation or during the warm-up sequence, press and hold the UP/YES and
DOWN/NO buttons for five seconds. Release them when the following screen appears.

2. If you want to exit Input Mode, press and release the DOWN/NO button. The Beacon 110 will
indicate NO CHANGE and return to normal operation without making any changes to the
detector head input type or gas type.

If you want to continue in Input Mode, press and release the UP/YES button. The top display line
will indicate Input? and the bottom display line will indicate the detector head input type choice.

3. Use the DOWN/NO button to scroll through the choices of input types. Table 8 below lists the
choices of input type for the Beacon 110.

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Table 8: Beacon 110 Detector Head Input Types

Detector Head Input Type Description

OXY DIR An OXY DIR detector head is an oxygen detector head in which the

oxygen detector is wired to the Beacon 110 with 2 wires using the
OXY GRN and WHT terminals from the detector/transmitter terminal
strips. All calibration adjustments are made at the Beacon 110.

TOX DIR A TOX DIR detector head is connected to the Beacon 110 with 2

wires using the AMP + and S terminals from the detector/transmitter
terminal strips. All calibration adjustments are made at the Beacon

110.

LEL DIR An LEL DIR detector head is a combustible gas detector head in

which the combustible gas detector is wired to the Beacon 110 with 4
wires using the LEL BLK, GRN, WHT, and RED terminals from the
detector/transmitter terminal strips. All calibration adjustments are
made at the Beacon 110.

4 - 20 mA A 4 - 20 mA detector head is connected to the Beacon 110 with 2 or 3

wires, depending on the detector head model, using the AMP +, S, and

- terminals on the detector head terminal strip. All calibration adjust­ments are made at the detector head.

4. When the desired detector head input type is on the display, press and release the UP/YES button.
The display will ask SAVE IT? YES/NO.

5. If you want to discard the detector head input type change, press and release the DOWN/NO
button. The display will ask DO OVER? YES/NO. Press the DOWN/NO button. The display will
ask ABORT? YES/NO. Press the UP/YES button. The display will indicate Aborting INPUT
and then NO CHANGE before indicating Select GasType?.

NOTE: If your Beacon 110 is configured as direct connect oxygen and the detector head input type

selection is aborted, the Beacon 110 will return to normal operation after indicating NO
CHANGE.

If you want to save the input type selection, press and release the UP/YES button. The display will
indicate Input Updated for a few seconds if you changed the input type and then the display will
indicate Gas Type? on the top display line and the gas type choice on the bottom display line. If
you did not change the input type from the current type, the display indicates NO CHANGE and
then Select GasType?.

NOTE: If you selected OXY DIR, the Beacon 110 will enter Configuration Mode after pressing and

releasing the UP/YES button since the gas type and full scale are pre-defined for a direct
connect oxygen type input. Skip to step 10.

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6. If you changed the input type above, you must select a gas type. Proceed to step 7.

If you did not change the input type, you can decide if you want to select the gas type. If you do
not want to select the gas type, press and release the DOWN/NO button. The display will indicate
NO CHANGE and the Beacon 110 will return to normal operation with the previous setup. If you
do want to select the gas type, press the UP/YES button and the display will indicate GasType? on
the top display line and the gas type choice on the bottom display line.

7. Use the DOWN/NO button to scroll through the choices of gas types. When you come to the
desired choice, press the UP/YES button to select it.

If you selected one of the defined gas types such as OXYGEN or CO, the display will ask SAVE
IT? YES/NO. Proceed to step 8.

If you selected the OTHER gas type, the display will indicate GAS NAME on the top display line
and bottom line will be blank with the cursor flashing in the far left. Proceed to step 9.

8. If you did not change the input type above and want to discard the gas type selection, press and
release the DOWN/NO button. The display will ask DO OVER? YES/NO. Press the DOWN/NO
button. The display will ask ABORT? YES/NO. Press the UP/YES button. The display will
indicate Aborting Gas Type, then NO CHANGE and the Beacon 110 will return to normal
operation.

If you want to save the gas type selection, press and release the UP/YES button. The display will
indicate Gas Type Updated, show the target gas and the detection range for a few seconds, then
the Beacon 110 will enter Configuration Mode so that the parameter settings in Configuration
Mode can be verified or changed.

9. Perform the following steps to define the gas name, detection range, and units if you selected the
OTHER gas type.

• With GAS NAME on the top display line and the cursor flashing in the far left on the bottom
display line, use the UP/YES and DOWN/NO buttons to select a character for the first
character of the gas name and press ENTER to save it. The cursor will move to the next
position. Repeat this process until the last character is saved.

• The display will ask SAVE IT? YES/NO. Press and release the UP/YES button. The display
will indicate RANGE . . . on the top display line prompting you to enter a full scale value
and the bottom line will be blank with the cursor flashing on the far left.

• Use the UP/YES and DOWN/NO buttons to enter a number for the first digit of the full scale
value and press ENTER to save it. The cursor will move to the next position. Repeat this
process until you have entered the full scale value, for example 30.0, leaving extra positions
blank before pressing ENTER.

• When you have pressed ENTER for the last time, the display will ask SAVE IT? YES/NO.
Press and release the UP/YES button. The display will indicate UNITS? on the top line and
the units choice on the bottom line of the display.

• Use the DOWN/NO button to scroll through the choices until you find the desired units. (If
you select the OTHER choice, perform the same procedure described above for entering the
gas name and range.)

• Press the UP/YES button to save the units. The Beacon 110 will proceed to Configuration
Mode.

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10. While in Configuration Mode press and release the ENTER button to accept the displayed
parameter setting and move to the next one. Use the UP/YES and DOWN/NO buttons to adjust a
setting. See “Chapter 5: Configuration Mode” on page 31 for a complete description of
Configuration Mode.

11. When you have reviewed and accepted the last item in Configuration Mode by pressing the
ENTER button, display will ask SAVE IT? YES/NO.

12. To save the configuration settings, press and release the UP/YES button.The display will indicate
Config Saved and the Beacon 110 will begin its warm-up sequence.

To discard the settings and review them again, press the DOWN/NO button. The display will ask
DO OVER? YES/NO. Press the UP/YES button and the display will indicate Re-do Config, then
display the target gas and the detection range for a few seconds before returning to Configuration
Mode. Repeat steps 6 - 8 until the settings are as desired.

13. After the Beacon 110 completes its warm-up sequence, the display will indicate CAL NEEDED,
the buzzer will sound a steady tone, the strobe (if installed) will flash, the fail relay will activate,
and the fail LED will turn on. Since the input type and/or gas type has been changed, a successful
calibration must be performed before the Beacon 110 can enter normal operation.

NOTE: If the input type was set as 4 - 20 mA, the Beacon 110 will enter normal operation since

calibration is done at the detector for a 4 - 20 mA type input.

14. Press and release the UP/YES button to enter Calibration Mode. Normally, you must hold the UP/
YES button for 5 seconds to enter Calibration Mode, but since a calibration is required, only a
momentary push is needed to enter Calibration Mode after changing the gas type.

15. See “Calibration Mode” on page 38 for calibration instructions.

NOTE: When calibrating a Beacon 110 after changing the gas type, the Beacon 110 will not ask if

you want to calibrate, or whether you want to perform a fresh air adjustment, span
adjustment or zero adjustment. Since a complete calibration is required, the calibration
sequence will proceed without asking if you want to perform certain operations.

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Chapter 7: Maintenance

Overview

This chapter describes how to calibrate the Beacon 110 using Calibration Mode, replace the AC fuses,
and preventive maintenance procedures for the Beacon 110. It includes a troubleshooting guide for
problems you may encounter with the Beacon 110.

Calibration Frequency

Although there is no particular calibration frequency that is correct for all applications, a calibration
frequency of every 3 to 6 months is adequate for most Beacon 110 applications. Unless experience in a
particular application dictates otherwise, RKI Instruments, Inc. recommends a calibration frequency of
every 3 months.

If an application is not very demanding, for example detection in a clean, temperature controlled
environment where a combustible or toxic gas is not normally present, and calibration adjustments are
minimal at calibration, then a calibration frequency of every 6 months may be adequate.

If an application is very demanding, for example if a combustible or toxic gas is present often and in
significant concentrations or the environment is not well controlled, then more frequent calibration
than every 3 months may be necessary. For combustible gas detection, if potential catalyst poisons are
known or likely to be present, more frequent calibration than every 3 months will be necessary.

Calibration Mode

Calibration Mode is used to calibrate the Beacon 110’s detector head. The Beacon 110 can support
both direct connect (internal amp) and 4-20 mA transmitter (remote amp) detector heads. Each type
has special considerations when calibrating:

• Direct connect detector head.

If a direct connect detector head is installed, then all calibration adjustments are made at the
Beacon 110 after calibration gas is applied to the detector.

NOTE: A direct connect O2 channel must be calibrated with 0 - 18% O2. All other direct connect

channels must be calibrated with a gas concentration between 10% and 100% of the
channel’s full scale value (ie. a 0 - 300 ppm CO channel must be calibrated with a CO
concentration between 30 and 300 ppm).

• 4-20 mA transmitter detector head.

If a 4-20 mA transmitter detector head is installed, then all calibration adjustments are made at the
detector head while calibration gas is being applied to the detector.

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Yes No

FreshAir

Adjust?
Yes/ No

Yes

ApplyGas to

Detector

Normal Operation

Press

UP/YES

PressENTER to

Accept Span

Setting

Yes

No

Calibrate?

Yes/No

Adjust Span

Setting

FreshAir Adjust

No

Span Y/N?

Figure 12: Direct Connect Detector Head

Calibration Gas Response Memory Feature

When a direct connect detector head is installed, the Beacon 110 has the capability to “remember” the
detector’s response to the calibration gas after the gas is removed from the detector during the fresh air
or span (zero for an oxygen detector) adjustment procedure. This feature enables one person to
perform calibration if the detector is mounted remotely from the Beacon 110. When zero air is applied
to the Beacon 110 during a fresh air adjustment, the Beacon 110 will freeze the display reading at the
lowest (highest for an oxygen detector) response and the Beacon 110 will continue to display this
reading and retain it in its memory until the fresh air adjustment procedure is completed. When
calibration gas is applied to the Beacon 110 during a span (zero for an oxygen detector) adjustment, the
Beacon 110 will freeze the display reading at the highest (lowest for an oxygen detector) response to
the calibration gas. The calibration gas can then be removed and the Beacon 110 will continue to
display this reading and retain it in its memory until the span (zero for an oxygen detector) adjustment
procedure is completed.

Calibration Program Flow

Figure 12 and Figure 13 below illustrate the general flow of the Calibration Program for the two
detector head types. See the next section, “Entering Calibration Mode”, for instructions to enter
Calibration Mode. In general, if a question mark, “?”, is part of the display text, use the UP/YES or
DOWN/NO button to respond. Use the UP/YES and DOWN/NO buttons to increase or decrease a
displayed gas reading when performing a span (zero for oxygen) operation, and use the ENTER button
to accept a displayed value and continue.

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Entering Calibration Mode

Calibrate?

Yes/No

Press ENT ER

When Done

No

Normal Operation

Press

UP/YES

Yes

Calibrate at

Detector Head

Figure 13: 4 - 20 mA Transmitter Detector Head

Calib?
YES/NO

WARNING: The Beacon 110 is not an active gas monitoring device during the calibration

1. While in normal operation, press and hold the UP/YES button for 5 seconds to enter Calibration

2. If you want to exit Calibration Mode, press and release the DOWN/NO button. The Beacon 110

NOTE: The Beacon 110 can support one detector head which is either a 4-20 mA detector head or a

procedure. The 4-20 mA output signal will “freeze” at 3.5 mA (17.4 mA if an oxygen
detector head is installed) and all relays will remain in their non-alarm state while
the Beacon 1 10 is in Calibra tion Mode. The 4 - 20 mA output signal will not indicate
current readings and the rel ays wil l not re sume operat ing normal ly unti l the Bea con
110 is in normal operation again.

Mode. Release the button when the following screen appears.

will indicate Leaving CAL Mode and the Beacon 110 will return to normal operation.

If you want to continue with calibration, press and release the UP/YES button. If a direct connect
detector head is installed, the display will indicate the target gas and CAL Mode for a few seconds
before showing FreshAir Adjust?. If a 4 - 20 mA transmitter detector head is installed, the
display will alternate between CAL AT AMP and the current gas reading.

direct connect detector head. The following examples illustrate each type. See the detector
head operator’s manual for calibration information and procedures specific to your detector
head.

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Calibrating a 4 - 20 mA Detector Head

If a 4-20 mA detector head is installed on the Beacon 110, proceed as follows:

1. The display will be alternating between CAL AT AMP and the current gas reading as described
above.

2. Verify that the detector head is in a fresh-air environment. (If necessary, use a zero-emission air
cylinder, also known as zero air, to introduce a fresh-air sample when adjusting the fresh air
reading below.)

3. Adjust the detector head’s fresh air reading (sometimes referred to as the zero reading for non­oxygen detector heads). See the detector head operator’s manual for instructions on how to adjust
the fresh air reading.

4. Apply calibration gas to the detector head’s detector and adjust the detector head’s span reading
(zero reading for oxygen). See the detector head’s operator’s manual for instructions on how to
adjust the span reading (zero reading for oxygen).

5. Press and release the ENTER button to indicate that you are done with calibrating the detector
head. The display will indicate Leaving CAL Mode for a few seconds.

6. The display will now alternate between the normal operation screen and the message REMOVE
CAL GAS for 1 minute. If the calibration gas has not been removed from the detector, remove it
now to avoid unwanted alarms.

During this 1 minute period, the 4 - 20 mA output will remain fixed at 3.5 mA (17.4 mA if an
oxygen detector head is installed) and the relays will remain in their non-alarm state to avoid
unwanted alarms while the calibration gas clears from the detector. At the end of the 1 minute
period, the REMOVE CAL GAS message will stop appearing and the Beacon 110 will return to
normal operation.

Calibrating a Direct Connect Detector Head

If a direct connect detector head is installed on the Beacon 110, proceed as follows:

1. The display will indicate FreshAir Adjust? as described above in “Entering Calibration Mode”.

2. If you want to skip adjusting the fresh air reading, press and release the DOWN/NO button. The
display will indicate SPAN w/Cal Gas? (ZERO w/Cal Gas? for an oxygen detector head). Skip
the next step and continue with step 4.

If you want to continue with adjusting the fresh air reading, press and release the UP/YES button.
ENTER will alternate with FreshAir on the top display line and the current gas reading will be on
the bottom display line.

3. If the detector is in a fresh air environment, press and release the ENTER button. The Beacon 110
will perform a fresh air adjustment and the display will indicate SPAN w/Cal Gas? (ZERO w/Cal
Gas? for an oxygen detector head).

If you suspect the detector area is not a fresh air environment, apply zero air to the detector before
pressing the ENTER button to perform the fresh air adjustment. See the detector head operator’s
manual for instructions to apply zero air to the detector. The Beacon 110 will freeze the display
reading at the lowest level reached while applying zero air (highest level for an oxygen detector
head). After applying zero air for the required amount of time, usually two minutes, remove the
zero air source from the detector. Press and release the ENTER button at the Beacon 110. The
Beacon 110 will perform a fresh air adjustment and the display will indicate SPAN w/Cal Gas?
(ZERO w/Cal Gas? for an oxygen detector head).

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4. If you want to skip adjusting the span (zero for an oxygen detector head) setting, press and release
the DOWN/NO button. The display will indicate Leaving Cal Mode and the Beacon 110 will
return to normal operation.

If you want to continue with adjusting the span setting, press and release the UP/YES button.
APPLY will alternate with SPAN Gas (ZERO Gas for an oxygen detector head) on the top
display line and the current gas reading will be on the bottom display line.

5. Apply calibration gas to the detector. See the detector head operator’s manual for instructions on
how to apply gas to the detector.

When calibration gas is applied, the Beacon 110 will freeze the display gas reading at the highest
level reached while the gas was applied (lowest for an oxygen detector head).

6. After applying calibration gas for the required amount of time, usually two minutes, remove the
gas from the detector. The Beacon 110 will continue to display the maximum gas response (lowest
for an oxygen detector head) on the display and retain the response level in its memory.

7. Adjust the gas reading up or down to match the calibration gas cylinder concentration by using the
UP/YES and DOWN/NO buttons, then press and release the ENTER button.

NOTE: An O2 channel must be calibrated with 0 - 18% O2. All other channels must be calibrated

with a gas concentration between 10% and 100% of the channel’s full scale value (ie. a 0 ­300 ppm CO channel must be calibrated with a CO concentration between 30 and 300 ppm).

8. The Beacon 110 will perform a span (zero for an oxygen detector head) operation. The display will
indicate SPAN Gas PASS (ZERO Gas PASS for an oxygen detector head) for a few seconds, then
indicate SPAN Gas SAVED (ZERO Gas SAVED for an oxygen detector head) before indicating
Leaving CAL Mode for a few seconds.

9. The display will now alternate between the normal operation screen and the message REMOVE
CAL GAS for 1 minute. If the calibration gas has not been removed from the detector, remove it
now to avoid unwanted alarms.

During this 1 minute period, the 4 - 20 mA output will remain fixed at 3.5 mA (17.4 mA if an
oxygen detector head is installed) and the relays will remain in their non-alarm state to avoid
unwanted alarms while the calibration gas clears from the detector. At the end of the 1 minute
period, the REMOVE CAL GAS message will stop appearing and the Beacon 110 will return to
normal operation.

10. Store the components of the calibration kit in a safe place.

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Replacing the Fuses

The Beacon 110 has two replaceable AC fuses.

NOTE: To replace other components of the Beacon 110, contact RKI Instruments, Inc. for further

information.

1. Turn off or unplug all incoming power to the Beacon 110.

2. Open the housing door of the Beacon 110, then place the power switch in the OFF position.

3. Locate the vertical fuse holders above the AC In Terminal Strip. The AC fuses are labelled F1 and
F2 on the main PCB silkscreen.

4. Use a flat-blade screwdriver to rotate the applicable fuse holder 1/4 turn counterclockwise. The
fuse holder releases from the socket.

5. Remove the fuse holder from the socket, then remove the fuse from the fuse holder.

CAUTION: Verify that the replacement fuse is the same type and rating as the fuse you are

replacing. See the “Parts List” on page 46 for correct fuse.

6. Install the appropriate replacement fuse in the fuse holder, then place the fuse holder in the socket.

7. Push the fuse holder into the socket, then turn the holder 1/4 turn clockwise to secure it in the
socket.

8. Plug in or turn on all incoming power to the Beacon 110.

9. Place the Beacon 110’s power switch in the ON position, then verify that the Beacon 110
completes its warm-up sequence and enters normal operation.

10. Close and secure the housing door.

Preventive Maintenance

Preventive maintenance of the Beacon 110 consists of daily, monthly, and quarterly procedures to
ensure that the detector head is operating properly. See the detector head operator’s manual for
preventive maintenance procedures that apply to the detector head supplied with your Beacon 110.

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Troubleshooting

The troubleshooting guide describes symptoms, probable causes, and recommended action for
problems you may encounter with the Beacon 110.

NOTE: This troubleshooting guide describes controller problems only. See the detector head

operator’s manual for troubleshooting procedures that apply to the detector head supplied
with your Beacon 110.

Condition Symptom(s) Probable Causes Recommended Action

Table 9: Troubleshooting the Beacon 110

No Power • The display backlight

Frequent or
Suspect
Alarms

is off and the display
screen is blank.

• The Beacon 110 alerts
you to frequent or
suspect alarms while
the detector head’s
fresh air readings
remain on zero
(20.9 for oxygen).

• The power wiring is
disconnected or
misconnected.

• One or both AC fuses is
blown.

• The display cable is
disconnected or
misconnected.

• The Beacon 110 is
experiencing false
readings due to RFI or
EMI.

• The detector head
wiring is disconnected,
misconnected, or
intermittent.

1. Verify that the wiring to the power source
is correct and secure.

2. At the Beacon 110, verify that the wiring
to the AC terminals is correct and secure.

3. Check the continuity of the AC fuses.

4. Verify that the display cable is connected.
The display (ribbon) cable plugs into a

connector on the top edge of the control
PCB and on the main PCB below the
control PCB.

5. If the power difficulties continue, contact
RKI for further instruction.

1. Verify that the detector head wiring is
properly shielded (see the detector head
operator’s manual).

2. Verify that the detector head wiring is
correct and secure.

3. Verify that power and detector head
wiring is routed through separate conduit
hubs on the bottom of the Beacon 110
housing.

4. Increase the alarm on delay setting in
Configuration Mode.

5. If the frequent or suspect alarm
difficulties continue, contact RKI for
further instruction.

Flickering Dis­play

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flickers often.

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• The Beacon 110 is
experiencing false
readings due to RFI or
EMI.

• The noise filter setting is
too low.

• The zero suppression
setting is too low.

• The display screen is
malfunctioning.

1. Verify that the detector head wiring is
properly shielded (see the detector head
operator’s manual).

2. Verify that the detector head wiring is
correct and secure.

3. Verify that power and detector head
wiring is routed through separate conduit
hubs on the bottom of the Beacon 110
housing.

4. Increase the filter setting in Configuration
Mode.

5. Increase the zero suppression setting in
Configuration Mode.

6. If the display difficulties continue,
contact RKI for further instruction.

Table 9: Troubleshooting the Beacon 110 (Continued)

Condition Symptom(s) Probable Causes Recommended Action

Buzzer Not
Work in g

Reset Switch
Not Working

If Installed,
Option Strobe
Not Working

• The buzzer does not
sound an audible
alarm during alarm
conditions.

• The buzzer sounds
weak or broken.

• The buzzer does not
silence when you
press the reset switch.

• T he a lar m 1 o r alarm 2
circuit does not reset
when you press the
reset switch after the
alarm condition
passes.

• The strobe does not
flash when an alarm 1
or alarm 2 condition
occurs.

• The strobe does not
flash when a fail
condition occurs.

• The buzzer is
disconnected or
misconnected.

• The buzzer is
malfunctioning.

• The reset switch is
disconnected or
misconnected.

• The reset switch is
malfunctioning.

• The strobe is not setup
to activate in an alarm 1
or alarm 2 condition.

• The strobe is not
connected to the strobe
terminal strip properly.

• The strobe is
malfunctioning.

1. Verify that the wiring to the ALARM
BUZZER + & - terminals of the
Controller Terminal Strip is correct and
secure.

2. If the buzzer difficulties continue, contact
RKI for further instruction.

1. Verify that the wiring to the ALARM
RESET (2) terminals of the Alarm/
Controller Terminal Strip is correct and
secure.

2. If the reset switch difficulties continue,
contact RKI for further instruction.

1. Verify that the strobe is setup properly for
the desired alarm operation in
Configuration Mode. See “Chapter 5:
Configuration Mode” on page 31.

2. Verify that the strobe is wired properly to
the strobe terminal strip. The red wire
goes to the + terminal and the black wire
goes to the - terminal.

Beacon 110 Operator’s Manual 45

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Parts List

Table 10 lists replacement parts and accessories for the Beacon 110.

Table 10: Parts List

Part Number Description

18-0107RK Conduit Hub (3/4 in.)

43-0440RK Reset Switch

43-4165RK AC Fuse, 1/4” x 1 1/4”, fast acting, 3A, 250 V

51-0065RK-01 Replacement lens assembly for strobe

51-0066RK Strobe, red, 24 VDC, NEMA 4X

51-0096RK Strobe/horn, 10-33 VDC, NEMA 4X

52-1016RK Buzzer

71-0110RK Beacon 110 Gas Monitor Operator’s Manual (this document)

46 Beacon 110 Operator’s Manual

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Appendix A: Control Button Quick Reference Guide

The Beacon 110’s control buttons and reset switch allow access to operational modes, resetting of
alarms, and display of the Information Screen. Table 11 shows which button combinations perform
these functions and which parameters are available for adjustment while in the operational modes.
While in these modes, display prompts showing a “?” require you to respond by pressing either the UP/
YES (for yes) or DOWN/NO (for no) button. To change parameter settings, use the UP/YES and
DOWN/NO buttons to get the desired setting, then press and release the ENTER button to accept the
setting.

Table 11: Control Button Quick Reference Chart

Mode Entered or

Function Performed

Alarm Reset Press and Release

Min/Max Press and Hold the

Show Information Screen Press and Hold

Calibration Mode Press and Hold UP/

Configuration Mode Press and Hold UP/

Button

Combination

the Reset Switch

Reset Switch for 3
seconds

DOWN/NO

YES for 5 seconds

YES & ENTER for 5
seconds

Adjustable or Viewable Parameters

n/a

Minimum and maximum readings can be viewed and
reset.

• Operating DC Voltage. For AC powered units, this
is the DC voltage from the power supply.

• Beacon 110 Version/Revision Information

•Fresh Air Adjust

• Span (or Zero for Oxygen) Adjust with Calibration
Gas

•Alarm Levels

• Increasing or Decreasing Alarms

• Normally Energized or Normally De-energized
Relays

• Latching or Self-resetting Alarms

• Strobe operation (if installed)

•Alarm On Delay

• Alarm Off Delay (if self-resetting)

• Zero Suppression

• Noise Filter

• Calibration Time-out Period

Input Mode Press and Hold UP/

YES and DOWN/
NO for 5 seconds

Beacon 110 Operator’s Manual 47

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Define Detector Head Input