RKI Instruments Beacon 410A Operating Manual
Beacon 410A Gas Monitor
Operator’s Manual
Part Number: 71-0397
Revision: H
Released: 4/2/19
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 410A Gas Monitor Operator’s Manual
Table of Contents
Chapter 1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
About the Beacon 410A Gas Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Chapter 2: Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
External Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Internal Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Chapter 3: Installation and Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Mounting the Beacon 410A Gas Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Wiring the Beacon 410A Gas Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Starting Up the Beacon 410A Gas Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Chapter 4: Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4 - 20 mA Signal Output Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Viewing and Resetting Min/Max Readings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Battery Charging (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Alarm Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Chapter 5: Global Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Viewing and Changing Global Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Chapter 6: Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Viewing and Changing Channel Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Chapter 7: Input Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Selecting the Detector Head Input Type and Gas Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Table of Contents Beacon 410A Gas Monitor Operator’s Manual
Chapter 8: Calibration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Calibration Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Detector Head Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Calibration Gas Response Memory Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Entering Calibration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Calibration Timeout Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Performing a Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Viewing Maximum Spans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Chapter 9: RS-485 Modbus Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Wiring the Beacon 410A in a Modbus System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Using the Beacon 410A in a 4-wire Modbus System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Modbus Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Supported Modbus Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Chapter 10: Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Replacing the Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Beacon 410A Gas Monitor Operator’s Manual Table of Con tents
Chapter 1: Introduction
Overview
This chapter briefly describes the Beacon 410A Gas Monitor. This chapter also describes
the Beacon 410A Gas Monitor Operator’s Manual (this document). Table 1 at the end of
this chapter lists the specifications for the Beacon 410A.
About the Beacon 410A Gas Monitor
The Beacon 410A 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 410A.
The Beacon 410A 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 410A.
The Beacon 410A has four selection menus that allow you to configure various Beacon
410A 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 410A’s active channels.
About this Manual
The Beacon 410A Gas Monitor Operator’s Manual is organized as follows:
• Chapter 1 is an introduction to the Beacon 410A.
• Chapter 2 describes the components of the Beacon 410A.
• Chapter 3 describes the installation and start-up procedures of the Beacon 410A.
• Chapter 4 describes the operation of the Beacon 410A.
• Chapter 5 describes the Global Menu which allows you to set instrument parameters.
• Chapter 6 describes the Configuration Menu which allows 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
410A’s active channels.
• Chapter 9 describes the Beacon 410A’s RS-485 Modbus output.
• Chapter 10 describes the Beacon 410A’s maintenance requirements and procedures.
Beacon 410A Gas Monitor Operator’s Manual Overv iew • 5
The Beacon 410A Gas Monitor 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.
Caution: refer to accompanying documentation
~ Vac (AC voltage)
Vdc (DC voltage)
6 • About this Manual Beacon 410A Gas Monitor Operator’s Manual
Specifications
Table 1 lists specifications for the Beacon 410A.
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)
Environmental Conditions • For indoor or outdoor locations (Type 4X)
Table 1: Beacon 410A Specifications
Description Specification
or
24 V ± 10%, 2.5A
(31.8 cm H x 27.9 cm W x 16.3 cm D)
• 2000m max. altitude
• -40°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 voltage fluctuations not exceeding
+10% -8% of nominal
• Overvoltage Category II, Pollution Degree 2
Safety/Regulatory
C US
186718
User Controls • Reset switch
• Program buttons: ESCAPE, UP/YES, DOWN /NO,
and ENTER)
Relays • 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 410A Gas Monitor Operator’s Manual Specific ati ons • 7
Chapter 2: Description
Housing
Reset S witchBuzzer3/4 " ConduitHub (4X)
Overview
This chapter describes the Beacon 410A’s external and internal components.
External Description
This section describes the housing and all external components of the Beacon 410A. For
the purposes of this description, the housing door is considered the front of the monitor.
Figure 1: External Component Location
Housing
The Beacon 410A’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 OLED display and status
LEDs are visible through windows in the housing door. Four mounting feet are attached to
8 • Overview Beacon 410A Gas Monitor Operator’s Manual
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: Only use the four 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 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 five 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 46 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 43 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 46 for more information on
setting the strobe alarm setting parameters.
• Displays and resets the minimum and maximum gas concentration values detected.
• Silences the buzzer during a fail condition.
NOTE: Fail alarms cannot be reset with the reset switch. When a fail condition passes,
the Beacon 410A will automatically reset the fail alarm circuit.
Buzzer
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.
Beacon 410A Gas Monitor Operator’s Manual External Description • 9
Internal Description
Control PCB
Main PCB
This section describes the internal components of the Beacon 410A.
Figure 2: Beacon 410A Gas Monitor Internal 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 OLED display, 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.
10 • Internal Description Beacon 410A Gas Monitor Operator’s Manual
Status LEDs
OLED DisplayDisplay Cable
Connector
Status LEDs
Control
Switches
Figure 3: Control PCB Component Location
OLED 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. The display appearance cannot be adjusted so no adjustment pot is
needed for the OLED display.
Status LEDs
The Beacon 410A 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 3).
• RX & TX LEDs
These LEDs indicate data being received (RX) and transmitted (TX) when the Beacon
410A’s Modbus output is operating.
• Pilot LED
The PILOT LED is on when the Beacon 410A is receiving incoming power, either AC
or DC power.
• Fail LED
The fail LED turns on when the Beacon 410A is experiencing a fail condition. A fail
condition can be caused by a failure within the Beacon 410A or the detector heads
wired to the Beacon 410A (see “Chapter 10: Maintenance” on page 76).
• Alarm 1 LED
The alarm 1 LED is on when the Beacon 410A is experiencing an alarm 1 condition.
Beacon 410A Gas Monitor Operator’s Manual Internal Description • 11
• ALARM 2 LED
The alarm 2 LED is on when the Beacon 410A is experiencing an alarm 2 condition.
• ALARM 3 LED
The alarm 3 LED is on when the Beacon 410A is experiencing an alarm 3 condition.
Control Buttons
The Beacon 410A 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 OLED display (see Figure 3).
Table 2: Beacon 410A Control Button Functions
Button Function
ESCAPE • 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)
UP (YES) • Initiates an operation or proceeds to the next screen when a yes/
no question is asked on a screen
• Changes the displayed setting
• Enters the Global Menu (press with ESCAPE) button
• Enters the Calibration Mode (press with ENTER button)
DOWN (NO) • Cancels an operation or sequence when a yes/no question is
asked on a screen.
• Changes the displayed setting
• Enters the Modbus Menu (press with ENTER button)
ENTER • 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)
12 • Internal Description Beacon 410A Gas Monitor Operator’s Manual
Main PCB
Termination
Jum per
Ground
Jumper
Power S witch
Main PCB
Control PCB
Controller
Terminal S trip
Relay (13X)
Field G round St ud
DC Fuse
AC Fuses
Common/
Channel Al arm
Termina l Strip
Channel A larm
Terminal S trip
Detector/
Transmitter
Terminal
Strips
Factory G round Stud
AC In
Terminal S trip
The main PCB contains: terminal strips, relays, a termination jumper, a ground jumper,
ground studs, the power switch, the power supply, and fuses.
Figure 4: Main PCB Component Location
Terminal Strips
The Beacon 410A includes 9 terminal strips for wiring connections. See “Wiring the
Beacon 410A Gas Monitor” on page 22 for detailed wiring procedures.
• Strobe 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 410A, the strobe
terminal strip is used to factory wire the strobe.
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.
Beacon 410A Gas Monitor Operator’s Manual Internal Description • 13
• Detector/Transmitter Terminal Strips
Four detector/transmitter terminal strips are located along the bottom left side of the
main PCB (see Figure 4 on page 13). 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 Strip
A channel alarm terminal strip is located to the right of the channel 4
detector/transmitter terminal strip (see Figure 4 on page 13). 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 43 and
“Viewing and Changing Channel Parameters” on page 46 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 43 and “Viewing and
Changing Channel Parameters” on page 46 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 4 on page 13). 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:
EXT DC/24V BATT +
EXT DC/24V BATT -
+ connection from 24 VDC power source
- connection from 24 VDC power source
1
(or 24 V backup battery)
1
(or 24 V backup battery)
RS-485 A
RS-485 B Allow connection of the Beacon 410A to a Modbus network
RS-485 C
Alarm Reset
Alarm Reset
Reset Switch Terminals (factory wired)
Alarm Buzzer + Buzzer + connection (factory wired)
Alarm Buzzer - Buzzer - connection (factory wired)
1
If 24 VDC is used as primary power source do not make wiring connections to the AC terminal strip.
1
1
14 • Internal Description Beacon 410A Gas Monitor Operator’s Manual
• AC Terminal Strip
Relay
B
CH 4
Relay
2
CH 3
Relay
1
Relay
A
DC Fuse
CH 1
Relay
1
CH 2
Relay
2
Channel
Relays
CH 4
Relay
1
Relay
C
Fail
Relay
CH 1
Relay
2
AC Fuses
Power Switch
CH 2
Relay
1
Common/Channel Relays
Relay
D
CH 3
Relay
2
The 2-point AC terminal strip is located above the controller terminal strip (see
Figure 4 on page 13). The AC terminal strip facilitates wiring connections to the AC
power source.
Table 4: Terminal Assignments for the AC Terminal Strip
Terminal Connects to:
LINE Hot wire from AC power source.
NEUT Neutral wire from AC power source.
NOTE: The AC power source’s ground wire must be connected to the field ground stud.
See “Connecting the AC Power Source” on page 24 for instructions.
Relays
The Beacon 410A 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).
Figure 5: Beacon 410A Relay Allocation
Beacon 410A Gas Monitor Operator’s Manual Internal Description • 15
• Channel Relays & Fail Relay
The eight channel relays are above the channel alarm terminal strip (see Figure 4 on
page 13 and Figure 5 on page 15). 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 4 on page 13 and Figure 5 on page 15). 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 along the right edge of the
main PCB a short distance above the AC In terminal strip. It is labelled “P3” and “RS-485
Terminator” on the PCB silkscreen. Although this jumper has no function unless the
Beacon 410A is wired into a Modbus installation, leave it installed unless directed to
remove it for a a Modbus installation. See “Chapter 9: RS-485 Modbus Output” on
page 66 for instructions to use the Beacon 410A in a Modbus system.
Ground Jumper
A two pin header with a jumper installed is located along the right edge of the main PCB
just above the termination jumper. It is labelled “P3” on the PCB silkscreen. Leave this
jumper installed unless directed to remove it for a Modbus installation. See “Chapter 9:
RS-485 Modbus Output” on page 66 for instructions to use the Beacon 410A in a Modbus
system.
Ground Studs
Two ground studs are located in the bottom right corner of the main PCB. The left one is
unlabeled and is for factory grounding connections. The one on the right is labeled with a
ground symbol and is for the field ground connection. A kep nut on the field grounding
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 410A.
Power Switch
The power switch is between the common/channel relays and the fuses (see Figure 4 on
page 13 and Figure 5 on page 15). The power switch turns the incoming AC power source
on and off at the Beacon 410A. 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 410A circuitry. A polycarbonate
cover prevents accidental contact with the AC terminals on the power supply.
Fuses
Two AC fuses and one DC fuse are used in the Beacon 410A. The fuses are located on
the right side of main PCB, between the power switch and the AC in terminal strip (see
Figure 4 on page 13 and Figure 5 on page 15). The AC fuses are labelled F1, F2 and the
DC fuse is labelled F3 on the PCB silkscreen. They cut off the incoming AC or DC power
in the event of a short circuit or other electrical fault which causes a high current draw in
16 • Internal Description Beacon 410A Gas Monitor Operator’s Manual
the Beacon 410A. They are housed in vertical fuse holders and are held in each holder by
Strobe Terminal Strip
a quarter turn cover. The AC fuses are rated at 6 A, 250 V, 1/4 x 1 1/4 inch, fast acting.
The DC fuse is rated at 10A, 250V, 1/4 x 1 1/4 inch, fast acting.
Optional Accessories
This section describes the optional accessories available for the Beacon 410A. Both
optional accessories are wired to the Strobe Terminal Strip as shown below.
Figure 6: Strobe Terminal Strip Location
Beacon 410A Gas Monitor Operator’s Manual Optional Accessories • 17
Alarm Strobe
Strobe (Optional)
13.39
4.92
The Beacon 410A can be ordered with an alarm strobe light installed on the top of the
housing. The Beacon 410A retains its NEMA 4X rating with the strobe installed. Strobe
operation can be programmed in Configuration Mode (see “Chapter 6: Configuration
Menu” on page 46). The outline and mounting dimensions with the alarm strobe are the
same as the standard Beacon 410A with the exception of the height. The difference is
shown below. See Figure 9 for all outline and mounting dimensions.
Figure 7: Alarm Strobe Dimensions
Horn/Strobe
The Beacon 410A 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
410A. If the horn/strobe is not factory installed, it also allows the user to mount the horn/
strobe away from the Beacon 410A so that it can be somewhere more visible/audible.
18 • Optional Accessories Beacon 410A Gas Monitor Operator’s Manual
Strobe operation can be programmed in Configuration Mode (see “Chapter 6:
Strobe Terminal Strip
-
Dimensions Shown in Inches
4.83
6.81
5.97
6.17
+
Configuration Menu” on page 46).
NOTE: See “Chapter 3: Installation and Start Up” on page 20 for complete Beacon 410A
installation instructions.
CAUTION: Do not adjust the strobe b rightness or the horn volume at the strobe/horn, as this
may overload the Beacon 410A 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 410A 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 410A through the
left conduit hub.
5. Connect the wires to the strobe terminal strip as shown in the figure below.
Figure 8: Horn/Strobe Wiring/Outline and Mounting Dimensions
Beacon 410A Gas Monitor Operator’s Manual Optional Accessories • 19
Chapter 3: Installation and Start Up
Overview
This chapter describes procedures to mount the Beacon 410A Gas Monitor, make wiring
connections to the monitor, and start up the monitor.
WARNING: Perform all installation and start-up procedures in a kn ow n fresh air
environment, an environment free of combustible and toxic gasses and of nor mal
oxygen content. The Beacon 410A is not in operation as a gas monitoring
controller until the start up procedure is complete.
Mounting the Beacon 410A Gas Monitor
WARNING: Only authorized and properly trained personnel should perform any mounting
procedures.
Perform the following procedure to install the Beacon 410A 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 410A?
• 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 410A 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 9, then tighten the screws.
4. Prepare the selected mounting site as required to mount the Beacon 410A. It should
be mounted at eye level (4 1/2 to 5 feet from the floor). Refer to Figure 9 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.
7. Each of the door clamps has a feature for locking device installation. A locking device
that requires a tool to unlock must be installed in each door clamp.
20 • Overview Beacon 410A 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 9: Beacon 410A Gas Monitor Outline and Mounting Dimensions
Beacon 410A Gas Monitor Operator’s Manual Mounting the Beacon 410A Gas Monitor • 21
Wiring the Beacon 410A Gas Monitor
This section describes procedures to connect the AC power source, DC power source,
Modbus wiring (refer to “Wiring the Beacon 410A in a Modbus System” on page 66),
external alarms, recording devices, and detector heads. See Figure 10 on page 23 for a
general diagram of all external wiring to the Beacon 410A.
W ARNIN G: Make all connections to the Beacon 410A before you plug in or turn on t he AC or
DC power source. Before you make any wiring adjustments, always verify that all
power sources are not live.
Routing Wiring Into the Beacon 410A Housing
Wiring must be brought into the housing through one of the four factory-installed conduit
hubs on the bottom of the housing.
Do not
drill into the Beacon 410A housing for any reason. Drilling the Beacon 410A
housing and routing wiring through holes not factory drilled will void the warranty
could result in:
• Damage to internal components from the drilling process.
and
• Moisture damage to internal components from poorly sealed holes.
• Unpredictable Beacon 410A behavior due to EMI/RFI interference caused by wires
routed across the PCBs.
• Possible shorting of Beacon 410A components due to wires routed across the PCBs.
22 • Wiring the Beacon 410A Gas Monitor Beacon 410A Gas Monitor Operator’s Manual
Neutral
Not
Used
L
N
AC
RS - 485
BAC
EXT DC
24V BATT
DP SW
ALARM
BUZZER
Alarm Device
Power
CH 4
RELAY-1
NO N C C
NO NC C
RELAY-CRELAY-AFAIL
NO NC C NO NC C
CH 3
RELAY-1
NO NC CNO NC C
CH 2
RELAY-2
CH 1
RELAY-2
NO NC C NO NC C
CH 1
RELAY-1
LEL
WG
4-20 m A
OUTPUT
B
OXY
S
AMP
GW
CH 4
RELAY-2
NO NC C
Buzzer
(Factory wired)
Alarm Dev ic e
Power
24V DC
See Modbus Wiring
In Chapter 9
Li ne (Hot)
AC Power
100/ 115 VAC
50 / 60 Hz
RELAY-B
NO N C C
NO NC C
CH 2
RELAY-1
Black
Red
Strobe Terminal Strip
(Factory wired)
Option al St robe
R
Refer to Detector Head Manual
And Beacon 410A D etector Head
Specification Sheet for Specific
Detector/Transmi tter Wiring
NOTE: Line and Neutral are L1 and L2 for 220 V AC wiring.
NOTE: AC ground connection is made to field
ground stud in lower right corner of circuit board.
AC
InTerminalStrip
Controller Termi nal Strip
Reset Switch
(Factory wired)
ALARM
RESET
Recording Device
500 Oh ms Impedan ce M ax i mum
Detector / Transmitter Terminal Strip
(typical 1 of 4)
NO NC C
CH 3
RELAY-2
Channel Alarm Terminal St rip
Alarm Dev ices, Typical Alarm Wiring Shown
Relay Contacts Rated For 10 Amps At 250 VAC
Alarm Devices, Typical Alarm Wiring Shown
Relay Contacts Rated For 10 Amps At 250 VAC
Common / Channel Alarm Terminal Strip
NO NC C
RELAY-D
Beacon 410A Gas Monitor Operator’s Manual Wiring the Beacon 410A Gas Monitor • 23
Figure 10: Beacon 410A Gas Monitor External Wiring Diagram
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. For 115 VAC connection, select wire
that is sized appropriately for the power requirements of the connected device and that is
rated to a minimum of 80°C and 150 V. For 220 VAC connection, select wire that is sized
appropriately for the power requirements of the connected device and that is rated to a
minimum of 80°C and 250 V. When selecting wire, be sure to meet the local electrical
code.
A certified switch of circuit breaker must also be installed in the AC line. For 115 VAC
connection, the switch or circuit breaker must be rated to 115 VAC, 50/60 Hz, and 0.5 A.
For 220 VAC connection, the switch or circuit breaker must be rated to 220 VAC,
50/60 Hz, and 0.3 A.
Perform the following procedure to connect the AC power source to the Beacon 410A.
WARNING: Verify that the power source is unplugged or turned off before you continue with
this procedure.
1. Turn off or disconnect mains power to the Beacon 410A.
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 2 on page 10). The terminals are labelled L
and N for line and neutral respectively.
4. Install an appropriately rated cable bushing or conduit in the right-most conduit hub on
the bottom of the Beacon 410A housing.
CAUTION: Only use the four 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 410A Housing” on page 22 for more
information.
5. Guide the AC power cord or wires in conduit through the right-most conduit hub on the
bottom of the Beacon 410A 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.
24 • Wiring the Beacon 410A Gas Monitor Beacon 410A Gas Monitor Operator’s Manual
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