Flash Technology Vanguard Red FTS 371 User manual

Flash Technology, 332 Nichol Mill Lane, Franklin, TN 37067
flashtechnology.com
1.615.503.2000 | 1.800.821.5825
Vanguard® Red FTS 371
Medium Intensity Red LED Obstruction Lighting System
Reference Manual
Part Number F7913801

FTS 371 USER MANUAL
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FRONT MATTER
ABSTRACT
This manual contains information and instructions for installing, operating and maintaining the Vanguard Red FTS
371 system components.
COPYRIGHT
©2021, Flash Technology, LLC. All rights reserved.
Reproduction or use of any portion of this manual is prohibited without express written permission from Flash
Technology and/or its licenser.
TRADEMARK ACKNOWLEDGEMENTS
Flash Technology® and Vanguard® are registered trademarks of SPX Corporation.
All trademarks and product names mentioned are properties of their respective companies, and are recognized
and acknowledged as such by Flash Technology.
APPLICABLE SPECIFICATIONS
The equipment included in this system meets or exceeds FAA AC 150/5345-43J requirements for the FAA Type L-
864, L-885, L-810 and L-810(F) obstruction lights. This equipment can accommodate system configurations that
meet the FAA AC/7460-1M, FAA AC/7460-1L and FAA AC/7460-1K standards for marker configurations.
The equipment included in this system meets or exceeds requirements for Transport Canada CAR621.19 types CL-
864, CL-885 and CL-810.
The equipment included in this system meets or exceeds requirements for ICAO Annex 14 Sixth Edition for
Medium-intensity obstacle lights Types B and C, as well as Low-intensity obstacle light Type B.
DISCLAIMER
While every effort has been made to ensure that the information in this manual is complete, accurate and up-to-
date, Flash Technology assumes no liability for damages resulting from any errors or omissions in this manual, or
from the use of the information contained herein. Flash Technology reserves the right to revise this manual
without obligation to notify any person or organization of the revision.
In no event will Flash Technology be liable for direct, indirect, special, incidental or consequential damages arising
out of the use of or the inability to use this manual.
WARRANTY
Under normal operating conditions, Flash Technology warrants all controller and LED lighting components for 5
years.
PARTS REPLACEMENT
The use of parts or components in this equipment that are not manufactured or supplied by Flash Technology
voids the warranty and invalidates the third party testing laboratory certification that ensures compliance with FAA
Advisory Circulars 150/5345-43J, 150/5345-53D and Engineering Brief No. 67D. The certification is valid as long as
the system is maintained in accordance with FAA guidelines (FR doc. 04-13718 filed 6-16-04).

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PERSONNEL HAZARD WARNING
DANGEROUS VOLTAGES
Dangerous line voltages reside in certain locations in this equipment. Also, this equipment may generate
dangerous voltages. Although Flash Technology has incorporated every practical safety precaution, exercise
extreme caution at all times when you expose circuits and components, and when you operate, maintain or service
this equipment.
AVOID TOUCHING LIVE CIRCUITS
Avoid touching any component or any part of the circuitry while the equipment is operating. Do not change
components or make adjustments inside the equipment with power on.
DO NOT DEPEND ON INTERLOCKS
Never depend on interlocks alone to remove unsafe voltages. Always check circuits with a voltmeter after turning
the circuit breakers off. Under no circumstances remove or alter the wiring or interlock switches.

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TABLE OF CONTENTS
Front Matter ..........................................................................................................................................................2
Abstract .............................................................................................................................................................2
Copyright ...........................................................................................................................................................2
Trademark Acknowledgements ..........................................................................................................................2
Applicable Specifications....................................................................................................................................2
Disclaimer..........................................................................................................................................................2
Warranty ...........................................................................................................................................................2
Parts Replacement.............................................................................................................................................2
Personnel Hazard Warning.................................................................................................................................3
List of Figures.........................................................................................................................................................5
List of Tables ..........................................................................................................................................................6
Section 1 –Introduction and Specifications.............................................................................................................7
System Specifications.........................................................................................................................................7
Controller: FTS 371 FTC AC, FTS 371 FTC DC....................................................................................................7
Flashhead/Beacon: FTS 371 FH AC, FTS 371 FH DC 24V, FTS 371 FH DC 48V ....................................................8
Markers: MKR 371 / MKR 372 IR Series ..........................................................................................................8
Markers: MKR 371 OL2 / MKR 372 IR OL2 Series.............................................................................................9
Section 2 –Outline, Mounting and Installation Instructions ..................................................................................10
Unpacking........................................................................................................................................................ 10
Tools................................................................................................................................................................ 10
Controller Installation and Grounding............................................................................................................... 10
L-864 Flashhead/Beacon Installation and Grounding ........................................................................................ 11
OL2 Installation and Wiring for A0 Towers........................................................................................................ 11
Marker Installation and Wiring......................................................................................................................... 12
Lightning Protection.........................................................................................................................................12
System Wiring.................................................................................................................................................. 12
Securing the Cable (2-3-4 Tape Method)...........................................................................................................13
AM “Hot” Tower Wiring ................................................................................................................................... 13
Flashhead/Beacon Wiring................................................................................................................................. 13
Controller Wiring ............................................................................................................................................. 14
Input power connections ............................................................................................................................. 14
Beacon and Marker Connections.................................................................................................................. 14

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Dry Contact Monitoring and Photodiode Connections .................................................................................. 15
Installation Checklists....................................................................................................................................... 15
Checkout Procedure.........................................................................................................................................16
Section 3 –Maintenance Instructions................................................................................................................... 32
Safety............................................................................................................................................................... 32
Maintenance................................................................................................................................................ 32
Troubleshooting........................................................................................................................................... 32
Component Removal and Replacement............................................................................................................ 32
FTS 371 FTC Controller................................................................................................................................. 32
FTS 371 FH (L-864 LED)................................................................................................................................. 33
Section 4 - Operating Instructions......................................................................................................................... 34
Controller......................................................................................................................................................... 34
Manual Override Option...................................................................................................................................34
Tower Configurations....................................................................................................................................... 34
Controller Configuration Switch Definitions......................................................................................................35
Controller Configuration Jumper Definitions..................................................................................................... 35
Alarm Indicators............................................................................................................................................... 36
Flashhead/Beacon LED Indicators..................................................................................................................... 36
Flashhead/Beacon Switch Definitions ...............................................................................................................37
Major Troubleshooting Symptoms.................................................................................................................... 37
Section 5 –Customer Support .............................................................................................................................. 39
Contact Information......................................................................................................................................... 39
Ordering Parts.................................................................................................................................................. 39
RMA Policy....................................................................................................................................................... 39
LIST OF FIGURES
Figure 1 –Controller FTS 371 Poly Enclosure Mounting and Outline...................................................................... 18
Figure 2 –Marker MKR 371 and MKR 372 series mounting and outline view......................................................... 19
Figure 3 –Flashhead/Beacon FTS 371 FH mounting and outline view.................................................................... 20
Figure 4 –OL2 mounting and outline view............................................................................................................ 21
Figure 5 –Photodiode PHD 516 mounting and outline view.................................................................................. 22
Figure 6 –Controller FTS 371 FTC AC Connection Diagram ....................................................................................23
Figure 7 –Flashhead/Beacon FTS 371 FH AC Connection Diagram.........................................................................24

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Figure 8 –FTS 371 AC Typical FAA Type A0 Installation Wiring .............................................................................. 25
Figure 9 –FTS 371 AC Typical FAA Type A1 Installation Wiring .............................................................................. 26
Figure 10 –FTS 371 Typical A1 Tower View........................................................................................................... 27
Figure 11 –Controller FTS 371 DC Connection Diagram ..................................................................................... 28
Figure 12 –Flashhead/Beacon FTS 371 FH DC Connection Diagram....................................................................... 29
Figure 13 –FTS 371 DC Typical FAA Type A0 Installation Wiring ............................................................................ 30
Figure 14 –FTS 371 DC Typical FAA Type A1 Installation Wiring ............................................................................ 31
LIST OF TABLES
Table 1.1 –System and Component Model Combinations.......................................................................................7
Table 1.2 –Controller Specifications.......................................................................................................................7
Table 1.3 –Beacon Specifications ...........................................................................................................................8
Table 1.4 –Single Marker Specifications .................................................................................................................8
Table 1.5 –OL2 Marker Specifications ....................................................................................................................9
Table 2.1 –2-3-4 Tape Method............................................................................................................................. 13
Table 2.2 –System Installation Checklist............................................................................................................... 15
Table 2.3 –Before Applying Power Checklist......................................................................................................... 16
Table 4.1 –Controller Configuration Switch Definitions.........................................................................................35
Table 4.3 –Alarms Indicator Names and Descriptions ........................................................................................... 36
Table 4.4 –Beacon LED Indicators Descriptions.....................................................................................................36
Table 4.5 –Beacon Switch Position Descriptions................................................................................................... 37
Table 4.6 –Troubleshooting Symptoms and Resolutions....................................................................................... 37

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SECTION 1 –INTRODUCTION AND SPECIFICATIONS
The Vanguard Red FTS 371 is comprised of
An FTS 371 FTC (AC or DC) series controller;
Zero to four MKR 371 L810 / MKR 372 IR series low intensity red LED obstruction lights (marker); and
Zero to one FTS 371 FH (AC) or zero to one FTS 371 FH (DC 24V, DC 48V) L864 medium intensity red LED
obstruction lights (FH/beacon).
System and component model combinations are provided in the table below. All models are available with GPS
option.
The FTS 371 FTC AC and DC controllers may be used with incoming power having the negative leg grounded and
are available in either polycarbonate enclosure.
The FTS 371 system is designed to meet FAA, ICAO and Transport Canada regulations and to be utilized for their
corresponding valid tower lighting configurations.
Table 1.1 –System and Component Model Combinations
System
Controller
Beacon
Markers
FTS 371 AC
FTS 371 FTC AC
FTS 371 FH AC IR (0 to 1)
MKR 371 (0 to 4)
MKR 372 IR (0 to 4)
FTS 371 DC 24V
FTS 371 FTC DC
FTS 371 FH DC 24V IR (0 to 1)
MKR 371 (0 to 4)
MKR 372 IR (0 to 4)
FTS 371 DC 48V
FTS 371 FTC DC
FTS 371 FH DC 48V IR (0 to 1)
MKR 371 (0 to 4)
MKR 372 IR (0 to 4)
SYSTEM SPECIFICATIONS
CONTROLLER: FTS 371 FTC AC, FTS 371 FTC DC
Table 1.2 –Controller Specifications
Parameter
Specification
Physical Dimensions
Polycarbonate Enclosure
7.80” x 8.25” x 4.01” (198.12 mm x 209.55 mm x 101.85 mm)
Weight
Polycarbonate Enclosure
2.10 lbs. (0.95 kg)
Operating Temperature Range
-40 to +55 degrees Celsius
Input Voltage Range
FTS 371 FTC AC
FTS 371 FTC DC
100–240 VAC Nominal; 85-265 VAC at 50/60 Hz
12–48 VDC +/- 10% (12VDC for markers only)
Power Consumption
FTS 371 FTC AC
FTS 371 FTC DC
0.9 Watts
0.8 Watts
Flash Rate Options (Flashes Per Minute)
Steady Burn / 20 / 30 / 40 / 60
Alarm Relay Contact Rating
5 Amp @ 120V AC / 5 Amp @ 24V DC, Isolated contacts
Protection Rating
IP65, NEMA 4X

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FLASHHEAD/BEACON: FTS 371 FH AC, FTS 371 FH DC 24V, FTS 371 FH DC 48V
Table 1.3 –Beacon Specifications
Parameter
Specification
Physical Dimensions
15.75” diameter x 7.5” (400 mm diameter x 190.5 mm)
Weight
25.6 lbs. (11.7 kg)
Flash Intensity
FAA Mode: 2000 effective candela +/- 25%
ICAO Mode: 2200 effective candela +/- 25%
Operating Temperature Range
-40 to +55 degrees Celsius
Input Voltage Range
FTS 371 FH AC
FTS 371 FH DC 24V
FTS 371 FH DC 48V
85-265 VAC at 50/60 Hz
24V +/- 10% (21.6 –26.4V)
48V +/- 10% (43.2 –52.8V)
Power Consumption
Mode
Average Power
FAA, Efficient, 20 FPM
4.0 Watts
FAA, Efficient, 30 FPM
5.3 Watts
ICAO, Efficient, 20 FPM
4.4 Watts
ICAO, Steady
30 Watts
Beam Spread
Horizontal: 360 deg. / Vertical: 3 deg.
Aerodynamic Wind Area
99.125 in2
Protection Rating
IP65, NEMA 4X
MARKERS: MKR 371 / MKR 372 IR SERIES
Table 1.4 –Single Marker Specifications
Parameter
Specification
Physical Dimensions
9.0” x 2.75” x 2.13” (228.6 x 69.9 x 54.1 mm)
Weight
1.6 lbs. (0.7 kg)
Intensity (Steady)
32.5 ECD +/- 25%
Operating Temperature Range
-40 to +55 degrees Celsius
Power Usage
Marker Type / Mode
Average Power
MKR 371 L810 / Steady
2.5 Watts
MKR 371 L810 / Flashing
0.4 Watts
MKR 372 L810 IR / Steady
6.9 Watts
MKR 372 L810 IR / Flashing
1.5 Watts
Beam Spread
Horizontal: 360 deg. / Vertical: 10 deg.
Aerodynamic Wind Area
24.75 in2
Protection Rating
IP65, NEMA 4X

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MARKERS: MKR 371 OL2 / MKR 372 IR OL2 SERIES
Table 1.5 –OL2 Marker Specifications
Parameter
Specification
Physical Dimensions
11.25” x 5.0” x 8.75” (279.4 mm x 127 mm x 222.25 mm); ¾”
NPT Coupling
Weight
5.40 lbs. (2.45 kg)
Intensity (Steady)
32.5 ECD +/- 25%
Operating Temperature Range
-40 to +55 degrees Celsius
Power Usage
Marker Type / Mode
Average Power
MKR 371 L810 / Steady
5 Watts
MKR 371 L810 / Flashing
0.8 Watts
MKR 372 L810 IR / Steady
13.8 Watts
MKR 372 L810 IR / Flashing
3 Watts
Beam Spread
Horizontal: 360 deg. / Vertical: 10 deg.

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SECTION 2 –OUTLINE, MOUNTING AND INSTALLATION INSTRUCTIONS
UNPACKING
Inspect shipping cartons for signs of damage before opening. Check package contents against the packing list and
inspect each item for visible damage.
Promptly report damage claims to the freight handler.
TOOLS
1/8” non-flared flat blade screw driver
Digital volt-ohm meter
#2 Phillips® head screwdriver
Wire strippers
Level
Tin Snips
Mounting hardware for controller (if not provided in the system kit)
Various drill bits (to create openings in the bottom of the controller for cable runs)
CONTROLLER INSTALLATION AND GROUNDING
Locate the FTS 371 FTC controller in an area that will allow proper access to the enclosure. Ensure the mounting
location does not interfere with the quick-release latch that secures the enclosure’s door. Release the latch to
open the door for internal access.
Use the following guidelines for mounting the controller:
Ensure that adequate space exists around the equipment for access during installation, maintenance and
servicing.
Allow space for airflow around the controller. Recommended 3-4” of space allowed on each side of the
controller. Flash Technology does not furnish mounting hardware unless it is ordered as part of an
installation kit.
Flash Technology recommends using flexible conduit for all cable runs with the exception of the beacon
cable and jacketed ground wires.
Ground the controller using a 10 AWG insulated ground conductor crimped into the supplied Yellow ring
terminal. Install the ring terminal at the lower left PCB mounting screw in the controller. Route all ground
conductors down and away from the energized equipment and ensure there are no bends less than 8
inches radius. If installed outdoors the system controller should be bonded to the site grounding grid (via
exothermic welding). If installed inside a shelter or building route the 10 AWG insulated ground wire to
the nearest down-link and attach using a compression fitting (c-tap).
Use the following guidelines for installing the photodiode:
Locate the photodiode where it has an unobstructed view of the polar sky (north).
It must not view direct or reflected artificial light.
Support the photodiode vertically at the top end of a vertical length of rigid conduit to prevent moisture
intrusion.
If possible, mount the photodiode in a location that will allow easy access for future testing.

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L-864 FLASHHEAD/BEACON INSTALLATION AND GROUNDING
1. Verify that the mounting surface is free of debris.
2. Align the four mounting holes in the base of the beacon with the holes in the tower or pedestal’s
mounting plate.
3. Leaving the hardware assemblies loose, secure the beacon with ½-inch stainless steel or galvanized
hardware (part # 5991740).
4. With the light engine secured by the two latches on the base, place a level on the beacon’s top plate and
verify that it is level in two directions. Note: Flash Technology’s “T”- Level (optional part # 11000013455)
has two vials to simplify installation.
5. If the beacon is not level, add stainless steel shim material or washers (stainless steel or galvanized) as
necessary to level the beacon.
6. Tighten the hardware once the beacon is level in both directions. Fully tighten the hardware and verify
that the beacon is level. If necessary, loosen the mounting hardware and repeat Step 5 until the beacon is
level with the hardware fully tightened.
7. Connect a minimum 8 AWG grounding wire to the pre-installed grounding lug on the beacon base
exterior. Connect the other end of the wire directly to tower steel, collective buss bar or the customer’s
preferred location. Use an anti-corrosive agent on all terminal ends.
OL2 INSTALLATION AND WIRING FOR A0 TOWERS
A0 towers use a double L-810 (OL2) as the beacon. Images of the various OL2 styles are shown below.
There are several options in which to mount an OL2.
1. If clean steel is available with no worry of or indication of transmitting issues from other sources, a
mounting bracket can be used in combination with a marker cable. Flash Technology provides a bracket
(F3877103 Bracket Mounting Kit OL2 Extended) that is screwed into the threaded hole in the bottom of
the OL2 and mounted on the base plate at the top of the tower. The mounting bracket is shown below.
The cable is best secured using the 2,3,4 tape method described in “SECURING THE CABLE” section below.

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2. If there is no base plate, the OL2 may also be secured to the tower by mounting it on a length of ¾” nipple
or conduit and securing to the nipple/conduit to the tower by means of 2 –3 U-bolts, marker clamps or
beam clamps. The cable is then secured using the 2,3,4 tape method.
MARKER INSTALLATION AND WIRING
Installation and wiring instruction concerning MKR 371 DC / MKR 372 DC IR marker fixtures are supplied with the
marker kit.
LIGHTNING PROTECTION
All Flash Technology equipment is designed to withstand severe transient over-voltages. However, install a
lightning arresting system to prevent eventual damage by lightning. Transient suppressors from line-to-line and
line-to neutral are recommended at the primary power load center.
Confirm the presence of a copper lightning rod. Ensure the rod is approx. 18” away from the L-864 red LED beacon
and 36” above the beacon for proper protection.
SYSTEM WIRING
This manual may not contain all the information about installation wiring required for your installation.
Important! If installation drawings prepared specifically for your site disagree with information provided in this
manual, the site installation drawings should take precedence. Consult any site-specific installation wiring
diagrams supplied with your equipment.
Flash Technology wiring diagrams define only minimum requirements recommended for satisfactory equipment
operation. It is the responsibility of the installer to comply with all applicable electrical codes.
All installation wiring should have an insulation rating of 600 volts. Wire size for the lights on each wire run is
calculated from the number of lighting fixtures and the length of the wire on that run.
After the beacon wiring has been terminated to the beacon base ensure all cord grips are fully tightened and both
latches are secured to prevent moisture intrusion.

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SECURING THE CABLE (2-3-4 TAPE METHOD)
Flash Technology provides the material for securing the beacon cable to a skeletal structure with the following
technique. NOTE! Always adhere to local electrical codes that could supersede this technique.
Table 2.1 –2-3-4 Tape Method
Step 1
Step 2
Step 3
Run the cable along 1 of the tower legs.
Wrap 2 full turns of 2-inch Scotchrap™
#50 tape (or the equivalent) around the
cable and tower leg.
Wrap 3 full turns of 1-inch
Scotchrap Filament #890 tape
over the Scotchrap #50 tape.
Wrap 4 full turns of 2-inch
Scotchrap #50 tape over the
Scotchrap Filament #890 tape.
NOTE! Ensure there is at least a 4-5 foot (1.5 meters) separation between taping sections per NEC.
FLANGE STRESS RELIEF
Secure the cable above and below each flange approximately 6 inches by performing steps 1 through 3. Allow a 1-
inch to 3-inch separation from the flange and the cable.
AM “HOT” TOWER WIRING
On AM “hot” towers, wire the beacon, markers and controller as described in this section except for the following:
On the cable between the controller and beacon, do not connect the ground conductor in the controller or the
beacon.
FLASHHEAD/BEACON WIRING
For AC powered systems, see beacon wiring in Figure 6 (page 24) and typical installation diagrams in Figure 7 (page
25) and Figure 8 (page 26). In the beacon, connect the black wire to PCB terminal L1 and white wire to L2/N.
Connect the green ground wire directly to the beacon base using the screw with integrated star washer located
near the cable entry point.
For DC powered systems, see beacon wiring in Figure 11 (page 29) and typical installation diagrams in Figure 12
(page 30) and Figure 13 (page 31). In the beacon, connect the red wire to PCB terminal DC+ and black wire to DC-.
Connect the blue ground wire directly to the beacon base using the ground terminal installed in the beacon base
located near the cable entry point.

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CONTROLLER WIRING
For AC powered systems, see controller wiring in Figure 5 (page 23) and typical installation diagrams in Figure 7
(page 25) and Figure 8 (page 26).
For DC powered systems, see controller wiring in Figure 10 (page 28) and typical installation diagrams in Figure 12
(page 30) and Figure 13 (page 31).
INPUT POWER CONNECTIONS
Input power will be applied to J1.
AC powered systems are not sensitive to input
power phase and have an operational voltage range
of 85-265 VAC, 50/60 Hz with no modification
necessary to the input power module. The
replaceable input power fuses are located at F1 and
F2. To remove a fuse, disconnect power then pull
the fuse straight out.
On DC systems, observe polarity of input voltage
(connect + to DC+ and –to DC-). There is only one
replaceable input power fuse located at F1. To
remove the fuse, disconnect power then pull the
fuse straight out.
BEACON AND MARKER CONNECTIONS
For AC powered systems, one FTS 371 FH AC IR beacon may be connected. Connect the black wire to J2 terminal
L1, white wire to L2 and green wire to GND.
For DC powered systems, one FTS 371 FH DC IR beacon may be connected. Connect the red wire to J2 terminal
DC+, black wire to DC- and blue wire to GND.
Up to four of the MKR 372 DC IR or MKR 371 series marker lights may be powered from the MARKER OUTPUT at
J3. Connect the red wire to DC+, black wire to DC- and WHT/BLU wire to SENSE. The marker cable shield wire (non-
insulated) should be connected to GND at J2, BEACON OUTPUT.
Note: The beacons or markers are powered if wired to the connectors. Alarming is configured by the Configuration
Switches and Jumpers.
FTS 371 FTC AC
Beacon and Marker Connections
FTS 371 FTC DC
Beacon and Marker Connections
FTS 371 FTC AC Input
Power Connections
FTS 371 FTC DC Input
Power Connections

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DRY CONTACT MONITORING AND PHOTODIODE CONNECTIONS
Find the dry contact monitoring connection on J4. The FTS 371 controller provides one alarm point available for
external monitoring.
The photodiode (PHD 516) will connect to the far right of J5. If necessary, prepare the photodiode cable by
stripping jacket and removing foil shield from black, clear and drain wires. Connect the wires to matching labels on
the PCB for proper operation (Clear to WHT, Black to BLK and drain wire to SHLD).
Dry Contact Monitoring and Photodiode Connections
INSTALLATION CHECKLISTS
Table 2.2 –System Installation Checklist

All equipment has been pre-inspected for damage.

All received equipment has been verified against the packing list to ensure completeness.

Site installation drawings have been consulted for placement, mounting, and wiring details.

A power disconnect switch or a circuit breaker has been provided.

A lightning protect system is in place.

Junction boxes have been ensured to drain condensation properly.

Controller has been mounted and positioned to allow adequate clearance to open the cover.

Controller has been mounted upright.

All screws within the internal controller hardware are tight.

No holes have been punched or drilled on the top of the controller enclosure.

The photodiode has been located where it has an unobstructed view of the polar sky (north).

Photodiode is located where it will not view direct or reflected artificial light.

Photodiode is supported directly by electrical conduit or mounted on the optional Antenna Mounting
Bracket (Kit PN 1905355).

Photodiode is not mounted underneath the controller where it could be shadowed.

Photodiode installation is water tight.

AM Towers Only: If the AM tower is “hot,”do NOT connect the ground wires to the beacon power
connector or the controller beacon power connector.

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Table 2.3 –Before Applying Power Checklist

Examine installation drawings.

Verify incoming service voltage is the value stated on the ID plate.

Ensure the unit is wired according to the included instructions.

Check all electrical connections for tightness.

Check all terminal strip connections for tightness.

If external alarm detection circuit responds to closed contacts, ensure they are wired to the proper
contacts that close on alarm.

If external alarm detection circuit responds to open contacts, ensure they are wired to the proper
contacts that open on alarm.

Verify alarm wiring has been protected by using shielded wires. Also verify proper grounding of the
shield wire, and that the wires are ran through conduit.

Ensure the white wire of the photodiode is connected to J4 terminal labeled WHT+ and the black wire
is connected to J4 terminal labeled BLK-.
CHECKOUT PROCEDURE
LIGHTING INSPECTION
To perform a lighting inspection (LI) you will be required to physically remove the connectors labeled J2 (beacon
output) and J3 (marker output). By removing these connectors, the voltage supply to the structure lights is
interrupted and the required alarm will generate. The following inspection will only test devices that the controller
is configured for.
Note! To ensure system damage does not occur it is extremely important to remove power from the lighting
controller before removing the connectors and before reinserting the connectors to PCB1.
LIGHTING INSPECTION PROCEDURE
1. Power the 371 controller OFF. Ensure all LEDs are no longer illuminated and that no voltage is present on
J1 (input power).
2. Remove J2 - beacon output (if no beacons are installed, skip steps 2-7).
3. Power the controller ON and place the system into night mode by covering the photodiode.
4. Once the alarm is active the “BEACON ALARM” LED will be illuminated.
5. To restore (clear) the alarm simply power the controller off (see step 1) and reinsert J2 to PCB1.
6. Power the 371 controller ON and verify the “BEACON ALARM” LED is no longer illuminated.
7. Once the alarm has restored, power the controller OFF.
8. Remove J3 –marker output (if no markers are installed, skip steps 9 and 10).
9. Power the controller ON and place the system into night mode by covering the photodiode.
10. Once the alarm is active the “MARKER ALARM” LED will be illuminated.

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11. To restore (clear) the alarm simply power the controller off (see step 1) and reinsert J3 to PCB1.
12. Power the 371 controller ON and verify the “MARKER ALARM” LED is no longer illuminated.
13. Ensure no alarm LEDS are illuminated, and remove the photodiode cover.
14. TEST COMPLETE!
TESTING THE PHOTODIODE
1. Set the MODE switch to AUTO. This ensures that the system is now under photodiode control.
2. Cover the photodiode to block it from all light and wait up to 60 seconds.
a. Verify that the system is now in NIGHT mode via the “STATUS” LEDs.
b. The beacon or marker(s) connected to the controller should be on and operating as programmed.
3. Uncover the photodiode to allow light to strike it, or shine a light on it. With no alarms or errors:
a. Verify that the system is now in DAY mode via the “STATUS” LEDs.
b. The beacon(s)/marker(s) connected to the controller should turn off.

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Figure 1 –Controller FTS 371 Poly Enclosure Mounting and Outline
4.00
(101.6)
7.00
(177.8)
7.80
(198.12)
7.36
(186.94)
4.01
(101.85)
FRONT VIEW RIGHT SIDE VIEW
BOTTOM VIEW

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Figure 2 –Marker MKR 371 and MKR 372 series mounting and outline view
9.00
(228.6)
7.00
(177.8) 0.38
(9.65)
2.64
(67.06)
1.45
(36.83)
.38
(9.65)
3/4-14 NPS
2.75
(69.85)
1/4-20 UNC
(TYP OF 3)
1.20
(30.48)
1.20
(30.48)
1.03
(26.16)
1.63
(41.40)
2.13
(54.10)

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Figure 3 –Flashhead/Beacon FTS 371 FH mounting and outline view
15.75 (400)
7.5 (190.5)