RKI Instruments Beacon 410 User Manual

Beacon 410 Gas Monitor

Operator’s Manual

Part Number: 71-0131RK

Revision: D

Released: 10/16/12

www.rkiinstruments.com

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 as follows:

a) Absorbent cartridges d) Batteries b) Pump diaphragms and valves e) Filter elements c) Fuses

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.

THIS WARRANTY 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.

Beacon 410 Gas Monitor Operator’s Manual

Table of Contents

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

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

About the Beacon 410 Gas Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Chapter 2: Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

External Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Internal Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Chapter 3: Installation and Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Mounting the Beacon 410 Gas Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Wiring the Beacon 410 Gas Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Starting Up the Beacon 410 Gas Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Chapter 4: Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4 - 20 mA Signal Output Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Viewing and Resetting Min/Max Readings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Battery Charging (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Alarm Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Chapter 5: Global Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Viewing and Changing Global Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Chapter 6: Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Viewing and Changing Channel Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Chapter 7: Input Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Selecting the Detector Head Input Type and Gas Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Table of Contents Beacon 410 Gas Monitor Operator’s Manual

Chapter 8: Calibration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Calibration Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Detector Head Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Calibration Gas Response Memory Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Entering Calibration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Calibration Timeout Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Performing a Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Viewing Maximum Spans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Chapter 9: RS-485 Modbus Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Wiring the Beacon 410 in a Modbus System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Using the Beacon 410 in a 4-wire Modbus System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Modbus Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Supported Modbus Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Chapter 10: Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Replacing the AC Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Beacon 410 Gas Monitor Operator’s Manual Table of Contents

Chapter 1: Introduction

Overview

This chapter briefly describes the Beacon 410 Gas Monitor. This chapter also describes the Beacon 410 Gas Monitor Operator’s Manual (this document). Table 1 at the end of this chapter lists the specifications for the Beacon 410.

About the Beacon 410 Gas Monitor

The Beacon 410 is a fixed-mounted, continuous-monitoring controller. This multiple channel gas monitor is capable of detecting gas at up to four locations. The display screen simultaneously displays the gas readings of all active channels. Both direct connect (internal amplifier type) detector heads and 4 - 20 mA transmitter (remote amplifier type) detector heads may be used with the Beacon 410.

The Beacon 410 includes audible and visual alarms that warn you of hazardous gas conditions. The alarm circuits include up to three levels of gas alarms. The fail circuit alerts you to failures in the detector heads or Beacon 410.

The Beacon 410 has four selection menus that allow you to configure various Beacon 410 channel and instrument parameters, the Global Menu, Configuration Menu, Input Setup Menu, and Modbus Menu. It also has an operational mode, Calibration Mode, that enables you to calibrate the Beacon 410’s active channels.

About this Manual

The Beacon 410 Gas Monitor Operator’s Manual is organized as follows:

• Chapter 1 is an introduction to the Beacon 410.

• Chapter 2 describes the components of the Beacon 410.

• Chapter 3 describes the installation and start-up procedures of the Beacon 410.

• Chapter 4 describes the operatio n of the Beaco n 410.

• Chapter 5 describes the Global Menu which allows you to set instrument parameters.

• Chapter 6 describes the Configuratio n Menu whic h allo ws you to set channel parameters.

• Chapter 7 describes the Input Setup Menu which allows you to set the input type for each channel.

• Chapter 8 describes Calibration Mode which allows you to calibrate the Beacon 410’s active channels.

• Chapter 9 describes the Beacon 410’s RS-485 Modbus output.

• Chapter 10 describes the Beacon 410’s maintenance requirements and procedures.

The Beacon 410 Gas Monitor Operator’s Manual uses the following conventions for notes, cautions, and warnings:

Beacon 410 Gas Monitor Operator’s Manual Overview • 1

NOTE: Describes additional or critical information.

CAUTION: Describes potential damage to equipment.

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

Caution: refer to accompanying documentation

~ Vac (AC voltage)

Vdc (DC voltage)

2 • About this Manual Beacon 410 Gas Monitor Operator’s Manual

Specifications

Table 1 lists specifications for the Beacon 410.

Input Power 100/115/220V ~ ±10%, 50/60Hz, 1.0/1.0/0.5A

Construction (housing) Fiberglass/polyester with lexan window (NEMA 4X) Dimensions 12.5 in. H x 11.0 in. W x 6.4 in. D

Weight 10.4 lbs. (without AC line cord)

Table 1: Beacon 410 Specifications

Description Specification

or 24 V ± 10%, 2.5A VDC

(31.8 cm H x 27.9 cm W x 16.3 cm D)

Environmental Conditions

• For indoor or outdoor locations (Type 4X)

• 2000m max. altitude

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

• Maximum humidity of 80% relative

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

• DC supply voltag e flu ctu ati ons not ex ce edi ng +10 % -8% of nominal

• Overvoltage Category II, Polluti on Degre e 2

Safety/Regulatory

C US 186718

User Controls

Relays

• Reset switch

• Program buttons: ESCAPE, UP/YES, DOWN /NO, and ENTER)

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

• SPDT, Form C (common, normally open, and normally closed contacts)

Standard Accessory Operator’s manual (this document)

Beacon 410 Gas Monitor Operator’s Manual Specifi cations • 3

Chapter 2: Description

Overview

This chapter describes the Beacon 410’s external and internal components.

External Description

This section describes the housing and all external components of the Beacon 410. For the purposes of this description, the housing door is considered the front of the monitor.

Housing

The Beacon 410’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 LCD display and status LEDs are visible through windows in the housing door. Four mounting feet are attached to the back of the housing (one at each corner). The mounting feet allow you to install the housing to a vertical surface. Four conduit hubs on the bottom of the housing are for external wiring connections.

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

through the same conduit hub.

Reset Switch

The reset switch is on the bottom of the housing in front of the buzzer. The reset switch serves four functions:

• Resets the alarm circuits for “latched” alarms after an alarm 1, alarm 2, or alarm 3 condition passes.

You can set each channel for latched or self-resetting alarms in the Configuration Menu. See “Viewing and Changing Channel Parameters” on page 35 for more information.

• Silences the buzzer during an alarm 1, alarm 2, or alarm 3 condition if the buzzer silence parameter in the Global Menu is set to CAN SILENCE BUZZER. See “Viewing and Changing Global Parameters” on page 32 for more information on setting the silence feature.

• Resets the strobe during an alarm 1, alarm 2, or alarm 3 condition if the strobe alarm setting parameters are set to Resettable STROBE in the Configuration Menu. See “Viewing and Changing Channel Parameters” on page 35 for more information on setting the strobe alarm setting parameters.

• Displays and resets the minimum and maximum gas concentration values detected.

NOTE: Fail alarms cannot be reset or acknowledged with the reset switch. When a fail

condition passes, the Beacon 410 will automatically reset the fail alarm circuit.

4 • Overview Beacon 410 Gas Monitor Operator’s Manual

Buzzer

Relay (13X)

Ground Stud

Controller Terminal Strip

AC Fuse (2X)

Display Cable

Power Switch

Main PCB

Control PCB

Reset Switch

Buzzer

Common/ Channel Alarm Terminal Strip

Channel Alarm

Terminal Strip

Detector/

Transmitter

Terminal

Strips

Termination Jumper

3/4 " Conduit Hub (4X)

Housing

AC In Terminal Strip

The buzzer is on the bottom of the housing, behind the reset switch. The buzzer sounds an audible alarm to warn you of gas alarms and instrument failures.

Internal Description

This section describes the internal components of the Beacon 410.

Figure 1: Beacon 410 Gas Monitor Component Location

Control PCB

The control PCB (printed circuit board) is mounted to the power supply mounting plate which is in turn mounted to the main PCB. The power supply mounting plate and main PCB are described below. The control PCB includes the LCD display, the LCD contrast adjust pot, the status LEDs, and the program buttons. It is connected to the main PCB by the display cable which is a 20 conductor ribbon cable assembly. The display cable connects to a rectangular connector on the top edge of the control PCB and to the same type of connector labelled “FRONT PANEL” on the top edge of the main PCB.

Beacon 410 Gas Monitor Operator’s Manual Internal Description • 5

Status LEDs

LCD Contrast

Adjust Pot

LCD DisplayDisplay Cable

Connector

Status LEDs

Control Switches

Figure 2: Control PCB Component Location

LCD Display

During normal operation, the four line display simultaneously indicates the target gas, current gas reading, and measuring unit of each active channel. The display also shows messages, settings, and other data when you are operating the various selection menus and operating modes.

LCD Contrast Adjust Pot

The LCD contrast adjust pot is located to the left of the LCD. If the LCD contrast is too dark or too light to read easily, use a small phillips screwdriver adjust it until you can easily read the LCD.

Status LEDs

The Beacon 410 includes seven status LEDs that indicate the current status of the monitor: the RX & TX LEDs, the pilot LED, the fail LED, the alarm 1 LED, the alarm 2 LED, and the alarm 3 LED (see Figure 2).

• RX & TX LEDs These LEDs indicate data being received (RX) and transmitted (TX) when the Beacon

410’s Modbus output is operating.

•Pilot LED The PILOT LED is on when the Beacon 410 is receiving incoming power, either AC or

DC power.

• Fail LED The fail LED turns on when the Beacon 410 is experiencing a fail condition. A fail

condition can be caused by a failure within the Beacon 410 or the detector heads

6 • Internal Description Beacon 410 Gas Monitor Operator’s Manual

wired to the Beacon 410 (see “Chapter 10: Maintenance” on page 64).

•Alarm 1 LED The alarm 1 LED is on when the Beacon 410 is experiencing an alarm 1 condition.

• ALARM 2 LED The alarm 2 LED is on when the Beacon 410 is experiencing an alarm 2 condition.

• ALARM 3 LED The alarm 3 LED is on when the Beacon 410 is experiencing an alarm 3 condition.

Control Buttons

The Beacon 410 includes four control buttons that allow you to enter the selection menus and Calibration Mode, navigate through the menus and Calibration Mode, update instrument and channel parameter settings, and save changes to the settings. The control buttons, listed in Table 2, are to the right of the LCD display (see Figure 2).

Table 2: Beacon 410 Control Button Functions

Button Function

ESCAPE

UP (YES)

DOWN (NO)

ENTER

• Moves backward through the menu and mode screens

• Aborts operations

• Cancels changes you make in the menus

• Enters the Configuration Menu (press with ENTER button)

• Enters the Global Menu (press with the UP/YES button)

• Initiates an operation or proceeds to the next screen when a yes/no question is asked on a screen

• Changes the displayed set ting

• Enters the Global Menu (press with ESCAPE) button

• Enters the Calibration Mode (press with ENTER button)

• Cancels an oper atio n o r se que nc e w he n a y es /no question is asked on a screen.

• Changes the displayed set ting

• Enters the Modbus Menu (press with ENTER button)

• Saves changes you make in the menu and mode screens

• Accepts the displayed parameter setting

• Enters the Configuration Menu (press with ESCAPE button)

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

• Enters the Modbus Menu (press with DOWN/NO button)

Main PCB

Terminal Strips

The Beacon 410 includes 9 terminal strips for wiring connections. See “Wiring the Beacon 410 Gas Monitor” on page 15 for detailed wiring procedures.

• Str ob e Terminal Strip The strobe terminal strip is a 2-point terminal strip located in the upper left corner of

the main PCB. When the optional strobe is ordered with a Beacon 410, the strobe terminal strip is used to factory wire the strobe.

Beacon 410 Gas Monitor Operator’s Manual Internal Description • 7

CAUTION: The strobe terminals are intended for use with the RKI supplied optional

strobe. Consult RKI Instruments, Inc. before attempting to use these terminals for some other alarm device.

• Detector/Transmitter Terminal Strips Four detector/transmitter terminal strips are located along the bottom left side of the

main PCB (see Figure 1 on page 5). These four 11-point terminal strips facilitate wiring connections to the detector heads. They also provide terminals to connect a recording device to a 4 to 20 mA output for each channel. The top terminal strip is for channel 1 connections and each subsequent strip is used for the next channel with the bottom terminal strip being for channel 4 connections.

• Channel Alarm Terminal S trip A channel alarm terminal strip is located to the right of the channel 4

detector/transmitter terminal strip (see Figure 1 on page 5). This 24-point terminal strip facilitates wiring external alarm devices (horn, light, etc.) to relay contacts that are field configurable for alarm levels and operation and are controlled by individual channels.The contacts are labelled NO (normally open), NC (normally closed), and C (common). See “Viewing and Changing Global Parameters” on page 32 and “Viewing and Changing Channel Parameters” on page 35 for instructions to configure the operation of these contacts.

• Common/Channel Alarm Terminal Strip The common/channel alarm terminal strip is located in approximately the middle of the

main PCB above the channel alarm terminal strip. This 15-point terminal strip facilitates wiring external alarm devices (horn, strobe, etc.) to relay contacts that are field configurable as individual alarm contacts that are controlled by individual channels or as common alarm contacts which are controlled by all channels. The contacts are labelled NO (normally open), NC (normally closed), and C (common). See “Viewing and Changing Global Parameters” on page 32 and “Viewing and Changing Channel Parameters” on page 35 for instructions to configure the operation of these contacts.

• Controller terminal strip The 9-point controller terminal strip is along the lower right side of the main PCB (see

Figure 1 on page 5). The controller terminal strip facilitates various internal and external wiring connections. Table 3 lists the function of each terminal.

T able 3: Terminal Assignments for the Controller Terminal Strip

Terminal Connects to:

EXT DC/24V BATT

+ connection from 24 VDC power source

+ EXT DC/24V BATT

- connection from 24 VDC power source

(or 24 V backup battery)

RS-485 A RS-485 B Allow connection of the Beacon 410 to a Modbus network RS-485 C

8 • Internal Description Beacon 410 Gas Monitor Operator’s Manual

T able 3: Terminal Assignments for the Controller Terminal Strip (Continued)

Relay

CH 3

Relay

RelayBRelay

CH 1

Relay

CH 4

Relay

Power Switch

CH 2

Relay

Fail

Relay

CH 1

Relay

CH 4

Relay

CH 2

Relay

Common/Channel Relays

Channel Relays

AC Fuses

CH 3

Relay

Terminal Connects to:

Alarm Reset Alarm Reset

Reset Switch Terminals (factory wired)

Alarm Buzzer + Buzzer + connection (factory wired) Alarm Buzzer - Buzzer - connection (factory wired)

If 24 VDC is used as primary power source do not make wiring connections to the AC terminal strip.

• AC terminal strip The 3-point AC terminal strip is located above the controller terminal strip (see

Figure 1 on page 5). The AC terminal strip facilitates wiring connections to the AC power source.

Relays

The Beacon 410 includes eight channel relays and one common fail relay . It also includes four common/channel relays that can be defined as a group as channel or common relays. All the relays have single-pole double-throw (SPDT) contacts, also known as form C contacts, and are rated for 10 amps at 115 VAC (resistive). The contacts are available at the channel alarm and common/channel alarm terminal strips and are labelled NO (normally open), NC (normally closed), and C (common).

Beacon 410 Gas Monitor Operator’s Manual Internal Description • 9

Figure 3: Beacon 410 Relay Allocation

Channel Relays & Fail Relay

The eight channel relays are above the channel alarm terminal strip (see Figure 1 on page 5 and Figure 3 on page 9). These relays are dedicated to specific channels. Figure 3 illustrates the allocation of the channel relays.

The fail relay is located directly to the left of the channel relays. The fail relay is a common relay.

Common/Channel Relays

The four common/channel relays are above the common/channel alarm terminal strip (see Figure 1 on page 5 and Figure 3 on page 9). These relays can be configured as either all channel relays or all common relays in the Global Menu.

Termination Jumper

A two pin header with a termination jumper installed is located near the top edge of the main PCB to the right of the display cable connector. It is labelled “RS-485 Line Terminator” on the PCB silkscreen. The jumper has no function unless the Beacon 410 is wired into a Modbus installation. See “Chapter 9: RS-485 Modbus Output” on page 54 for a instructions to use the Beacon 410 in a Modbus system.

Ground Stud

The threaded ground stud is used for making connections to earth ground. It is located in the lower right corner of the Main PCB and is connected through the main PCB to the (ground) terminal on the AC terminal strip. A kep nut on the stud may be removed for installation of one or more user supplied lugs to make wiring connections to earth ground. This stud is typically used to connect the shield drain wire of shielded cable to earth ground at the Beacon 410.

Power Switch

The power switch is between the common/channel relays and the fuses (see Figure 1 on page 5 and Figure 3 on page 9). The power switch turns the incoming AC power source on and off at the Beacon 410. When the switch is up, the power is on.

Power Supply

The power supply is mounted to the power supply mounting plate which is located behind the display PCB. The power supply mounting plate is mounted to the main PCB with four standoffs. The power supply receives AC power from the external power source and converts it to a DC voltage that is usable by the Beacon 410 circuitry. A polycarbonate cover prevents accidental contact with the AC terminals on the power supply.

AC & DC Circuit Protection

Two AC fuses are used in the Beacon 410. The two fuses are located on the right side of main PCB, between the power switch and the AC in terminal strip (see Figure 1 on page 5 and Figure 3 on page 9). 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 410. They are housed in vertical fuse holders and are held in each holder by a quarter turn cover. They are fast blow fuses rated at 6 A, 250 V.

A polyswitch is used to protect the DC power input. It is located on the right side of the main PCB above the AC fuses and is labelled on the PCB silkscreen as PS9. In the event of a short circuit or other electrical fault which causes a high current draw in the Beacon 410, 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.

10 • Internal Description Beacon 410 Gas Monitor Operator’s Manual

Optional Accessories

Strobe Terminal S trip

This section describes the optional accessories available for the Beacon 410. Both optional accessories are wired to the Strobe Terminal Strip as shown below.

Figure 4: Strobe Terminal Strip Location

Beacon 410 Gas Monitor Operator’s Manual Optional Accessories • 11

Alarm Strobe

13.39

Strobe (O ptional)

.90

The Beacon 410 can be ordered with a red alarm strobe light installed on the top of the housing. The Beacon 410 retains its NEMA 4X rating with the strobe installed. Strobe operation can be programmed in Configuration Mode (see “Chapter 6: Configuration Menu” on page 35). The outline and mounting dimensions with the alarm strobe are the same as the standard Beacon 410 with the excpetion of the height. The difference is shown below. See Figure 7 for all outline and mounting dimensions.

Figure 5: Alarm Strobe Dimensions

Horn/Strobe

The Beacon 410 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

410. It also allows the user to mount the horn/strobe away from the Beacon 410 so that it

can be somewhere more visible/audible. Strobe operation can be programmed in Configuration Mode (see “Chapter 6: Configuration Menu” on page 35).

12 • Optional Accessories Beacon 410 Gas Monitor Operator’s Manual

NOTE: See “Chapter 3: Installation and Start Up” on page 14 for complete Beacon

Strobe Terminal Strip

Dimensions Shown in Inches

4.83

6.81

5.97

6.17

410 installation instructions.

CAUTION: Do not adjust the strobe brightness or the horn volum e at the strobe/horn, as this

may overload the Beacon 410 strobe control circuit.

The horn/strobe does not come factory installed to the Beacon 410. To install the horn/ strobe:

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 410 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 410 through the left conduit hub.

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

Figure 6: Horn/Strobe Wiring/Oultine and Mounting Dimensions

Beacon 410 Gas Monitor Operator’s Manual Optional Accessories • 13

Chapter 3: Installation and Start Up

Overview

This chapter describes procedures to mount the Beacon 410 Gas Monitor, make wiring connections to the monitor, and start up the monitor.

WARNING: Perform all installation and start-up procedures in a known fresh air

environment, an environment free of combustible and toxic gasses and of nor mal oxygen content. The Beacon 410 is not in operation as a gas monitoring controller until the start up procedure is complete.

Mounting the Beacon 410 Gas Monitor

Perform the following procedure to install the Beacon 410 at the mounting site.

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

• Is an AC or DC power source available?

• Is a vertical surface available to mount the Beacon 410?

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

through the conduit hubs at the bottom of the housing?

• Are the display screen and status lights visible?

2. Close and latch the housing door.

3. The Beacon 410 is shipped with the mounting feet positioned under the housing. Loosen the screws that secure the feet to the housing, rotate the feet to their mounting position as shown in Figure 7, then tighten the screws.

4. Prepare the selected mounting site as required to mount the Beacon 410. It should be mounted at eye level (4 1/2 to 5 feet from the floor). Refer to Figure 7 for the outline and mounting dimensions.

5. Position the monitor on the vertical mounting surface.

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

14 • Overview Beacon 410 Gas Monitor Operator’s Manual

Ø .31 x .50 slot, 4X

Door Latches

13.39

12.94

12.50

3/4" Conduit Hubs, 4X

6.43

3.63

8.00

6.25

10.50

Figure 7: Beacon 410 Gas Monitor Outline and Mounting Dimensions

Wiring the Beacon 410 Gas Monitor

This section describes procedures to connect the AC power source, DC power source, Modbus wiring (refer to “Wiring the Beacon 410 in a Modbus System” on page 54), external alarms, recording devices, and detector heads. See Figure 8 on page 16 for a general diagram of all external wiring to the Beacon 410.

WARNING: Make all connections to the Beacon 410 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 live.

Beacon 410 Gas Monitor Operator’s Manual Wiring the Beacon 410 Gas Monitor • 15

Neutral

Not

Use d

DP S W

RS - 485

BAC

ALARM

BUZZER

CH 4

RELAY-1

NO N C C

Alarm Device

Power

NO N C C

RELAY-CFAIL

NO NC C NO NC C

RELAY-A

CH 3

RELAY-1

NO N C CNO N C C

CH 2

RELAY-2

CH 1

RELAY-2

NO N C C NO NC C

CH 1

RELAY-1

4-20m A

OUTPUT

OXY

AMP

G W

Ground

EXT DC

24V BATT

CH 4

RELAY-2

NO N C C

Buzzer

(Factory wired)

Alarm Device

Power

24V DC

See ModbusWiring

In Chapter 9

AC Power

100/115 VAC

50 / 60 Hz

Li n e ( Hot)

RELAY-B

NO N C C

CH 2

RELAY-1

Strobe Terminal Strip

(Factory wired)

Optional Strobe

Red

/ Transmitter Ter minal Strip

(typical 1 of 4)

LEL

to DetectorHeadManual

Be ac on 410 Det e c tor Head

Sheet for Specific

Detector/Transmitter Wiring

NOTE: Line and Neutral are L1 and L2 for

220 VAC Wiring

Black

Controller Terminal Strip

Recording Device

500 Ohms Impedance Maximum

ACIn Terminal Strip

Reset Switch

(Factory wired)

ALARM

RESET

Alarm D evices,T ypicalAlarmWiring Shown

RelayContactsRatedFor10AmpsAt250 VAC

Common / Channel Alarm T erminalStrip

NO N C C

RELAY-D

Alarm D evices,T ypicalAlarmWiring Shown

RelayContactsRatedFor10AmpsAt250 VAC

Channel Alarm TerminalStrip

NO N C C

CH 3

RELAY-2

16 • Wiring the Beacon 410 Gas Monitor Beacon 410 Gas Monitor Operator’s Manual

Figure 8: Beacon 410 Gas Monitor External Wiring Diagram

Connecting the AC Power Source

220 VAC Wiring

AC In Terminal Strip

Earth Ground

N G

AC Power 100/115 VAC 50 / 60 Hz

AC In Terminal Strip

100/ 1 15 V AC Wirin g

Neutral

Earth Ground

Line (Hot)

AC Power 220 VAC 50 / 60 Hz

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. When selecting wire to connect the AC power source to the Beacon 410, be sure to meet the local electrical code. Also be sure to use an appropriate circuit breaker in the AC line close to the Beacon 410 that meets the local electrical code.

Perform the following procedure to connect the AC power source to the Beacon 410.

WARNING: Verify that the power sou rce is unplugged or turned off before you continue with

this procedure.

1. Turn off or unplug all incoming power to the Beacon 410.

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 AC in terminal strip (see Figure 1 on page 5). The terminals are labelled L,

N, and G for line, neutral, and ground respec ti ve ly.

4. Install an appropriately rated cable bushing or conduit in the right-most conduit hub on the bottom of the Beacon 410 housing.

5. Guide the AC power cord or wires in conduit through the right-most conduit hub on the bottom of the Beacon 410 housing.

CAUTION: Do not route power and detector head 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 in terminal strip as shown in Figure 9 below.

Figure 9: AC Power Wiring

Connecting the DC Power Source

Beacon 410 Gas Monitor Operator’s Manual Wiring the Beacon 410 Gas Monitor • 17

WARNING: Verify that the power sou rce is unplugged or turned off before you continue with

this procedure.

DC power may be used as a primary power source. It may also be used as a backup power source with a 24 VDC battery if AC power is the primary power source. If your

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RKI Instruments Beacon 410 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual