Federal Signal Corporation CN SignalMaster FSJoin Manual

25500678
REV. A0 1120
Printed in U.S.A.
© Copyright 2020 Federal Signal Corporation
Installation, Maintenance,
and Service Manual
CN SignalMaster™FSJoin™

blank page
Limited Warranty
This product is subject to and covered by a limited warranty,
a copy of which can be found at www.fedsig.com/SSG-Warranty.
A copy of this limited warranty can also be obtained by written
request to Federal Signal Corporation, 2645 Federal Signal Drive,
University Park, IL 60484, email to [email protected] or
call [phone].
This limited warranty is in lieu of all other warranties, express or
implied, contractual or statutory, including, but not limited to the
warranty of merchantability, warranty of tness for a particular
purpose and any warranty against failure of its essential purpose.
2645 Federal Signal Drive
University Park, Illinois 60484-3167
www.fedsig.com
Customer Support
Police/Fire-EMS: 800-264-3578 • [phone]
Work Truck: 800-824-0254 • [phone]
Technical Support 800-433-9132 • [phone]
All product names or trademarks are properties of their respective owners.

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Installation, Maintenance, and Service Manual
Federal Signal www.fedsig.com
Contents
Safety Messages for Installers and Service Personnel ............................................................... 4
Safety Messages for Operators of Warning Lights ...................................................................... 7
An Overview of the CN SignalMaster™.......................................................................................................9
LED Lights, Colors, and Flash Patterns......................................................................................................9
FSJoin .................................................................................................................................................................9
Installing the CN SignalMaster..................................................................................................... 10
Mounting the CN SignalMaster™.................................................................................................................10
Wiring the CN SignalMaster™in the Vehicle ............................................................................................ 11
Wiring the SignalMaster™Function ...................................................................................................... 12
Wiring the Light Bar Controls................................................................................................................ 12
Setting Configuration Options.................................................................................................................... 14
Testing the Light Bar ..................................................................................................................................... 15
Maintaining and Servicing the CN SignalMaster™...................................................................16
Replacing a PCB............................................................................................................................................. 16
Replacing a Reflector.................................................................................................................................... 19
Getting Technical Support and Service ................................................................................................... 19
Ordering Replacement Parts .....................................................................................................................20
Getting Repair Service.................................................................................................................................20
Figures
Figure 1 Mounting brackets attached to CN SignalMaster ........................................................11
Figure 2 DIP switches on the CN SignalMaster controller PCBA.......................................................... 14
Figure 3 Exploded front view of Model CNSMJ8 ...................................................................................... 16
Figure 4 Exploded rear view of Model CNSMJ8 ....................................................................................... 17
Figure 5 Exploded rear view of Model CNSMJ4 ....................................................................................... 18
Figure 6 Exploded rear view of Model CNSMJ2X4R ............................................................................... 18
Figure 7 Removing a reflector ........................................................................................................................ 19
Tables
Table 1 Mounting kit contents ........................................................................................................................10
Table 2 CN SignalMaster controls and wires from the Serial Interface Module .............................. 13
Table 3 CN SignalMaster DIP switch settings............................................................................................ 14
Table 4 Common replacement parts ..........................................................................................................20

Safety Messages for Installers and Service Personnel
4CN SignalMaster FSJoin™
Federal Signal www.fedsig.com
Safety Messages for Installers and Service Personnel
For your safety, read and understand this manual thoroughly before installing,
operating, and servicing the CN SignalMaster. The safety messages presented in this
section and throughout the manual are reminders to exercise extreme care at all times.
Read and understand the safety instructions to installers (doc. no. 256A692), and keep
it close at hand for reference. To download copies of this manual, go to
www.fedsig.com or call the Federal Signal Service Department at 1-800-433-9132, 7 a.m.
to 5 p.m., Monday through Friday (CT).
People’s lives depend on your proper installation and servicing of Federal Signal
products. It is important to read and follow all instructions shipped with this product.
Listed below are some other important safety instructions and precautions you should
follow.
Before Installation or Service
Qualifications
• To properly install or service this equipment, you must have a good understanding
of automotive mechanical and electrical procedures and systems, along with
proficiency in the installation and service of safety warning equipment. Always
refer to the vehicle’s service manuals when performing equipment installations on
a vehicle.
Light Hazards
• To be an eective warning device, this product produces bright light that can be
hazardous to your eyesight when viewed at a close range. Do not stare directly
into this lighting product at a close range, or permanent damage to your eyesight
may occur.
• Do not install the light system in an area that would block, impair, or blind the
driver’s vision. Ensure that the light system is mounted in a position that is outside
of the driver’s field of vision so the driver can safely operate the vehicle.
• Federal Signal power supplies and light heads are designed to work together as
a system. Combining light heads and a power supply from dierent manufacturers
may reduce the warning eectiveness of the lighting system and may damage
the components. Verify or test your combination to ensure that the system works
together and meets federal, state, and local standards or guidelines.
Electrical Hazards
• The lighting system components, especially light bulbs, strobe tubes, LEDs, and
the outer housing, get hot during operation. Disconnect power to the system and
allow the system to cool down before handling any components of the system.
• A light system is a high current system. In order for the system to function
properly, a separate negative (–) connection and positive (+) connection must
be made. All negative connections should be connected to the negative battery
terminal, and a suitable fuse should be installed on the positive battery terminal
connection as close to the battery as possible. Ensure that all wires and fuses are
rated correctly to handle the device and system amperage requirements.

Safety Messages for Installers and Service Personnel
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Installation, Maintenance, and Service Manual
Federal Signal www.fedsig.com
• Never attempt to install aftermarket equipment that connects to the vehicle
wiring without reviewing a vehicle wiring diagram available from the vehicle
manufacturer. Ensure that your installation will not aect vehicle operation
or mandated safety functions or circuits. Always check the vehicle for proper
operation after installation.
• Do not mount a radio antenna within 18 inches (45.7 cm) of the lighting system.
Placing the antenna too close to the lighting system could cause the lighting
system to malfunction or be damaged by strong radio fields. Mounting the
antenna too close to the lighting system may also cause the radio noise emitted
from the lighting system to interfere with the reception of the radio transmitter and
reduce radio reception.
• Do not attempt to wash any unsealed electrical device while it is connected to its
power source.
During Installation and Service
• DO NOT get metal shavings inside the product. Metal shavings in the product
can cause the system to fail. If drilling must be done near the unit, place an ESD-
approved cover over the unit. Inspect the unit after mounting to be sure there are
no shavings present in or near the unit.
• DO NOT connect this system to the vehicle battery until ALL other electrical
connections are made, mounting of all components is complete, and you have
verified that no shorts exist. If the wiring is shorted to the vehicle body or frame,
high current conductors can cause hazardous sparks resulting in electrical fires or
flying molten metal.
• DO NOT install equipment or route wiring (or the plug-in cord) in the deployment
path of an airbag.
• If a vehicle seat is temporarily removed, verify with the vehicle manufacturer if the
seat needs to be recalibrated for proper airbag deployment.
• Before mounting any components, check the manual to be sure that the
component you are installing is suitable for use in that area of the vehicle. Many
components are not suitable for use in the engine compartment or other extreme
environmental exposure areas.
• When drilling into a vehicle structure, be sure that both sides of the surface are
clear of anything that could be damaged. Remove all burrs from drilled holes. To
prevent electrical shorts, grommet all drilled holes through which wiring passes.
Also, ensure that the mounting screws do not cause electrical or mechanical
damage to the vehicle.
• Refer to the manual packed with the lighting system for proper electrical
connections, additional precautions,and information.
• Because vehicle roof construction and driving conditions vary, do not drive a
vehicle with a magnetically mounted warning light installed. The light could fly
o the vehicle causing injury or damage. Repair of damage incurred because of
ignoring this warning shall be the sole responsibility of the user.

Safety Messages for Installers and Service Personnel
6CN SignalMaster FSJoin™
Federal Signal www.fedsig.com
• To avoid denting the roof of the vehicle, place the light bar mounting feet as close
to the outer edge of the roof as possible.
• Roof damage can occur if the hook adjustment bolts are over-tightened. Tighten
adjustment bolts 10 ft-lb to 11 ft-lb to prevent the light bar from sliding front-to-back
when pulling on the mounting bracket. Install keeper plates.
• Locate the light system controls so the VEHICLE and CONTROLS can be operated
safely under all driving conditions.
After Installation or Service
• After installation, test the light system to ensure that it is operating properly.
• Test all vehicle functions, including horn operation, vehicle safety functions, and
vehicle light systems, to ensure proper operation. Ensure that the installation
has not aected the vehicle operation or changed any vehicle safety function or
circuit.
• Scratched or dull reflectors, mirrors, or lenses will reduce the eectiveness of
the lighting system. Avoid heavy pressure and use of caustic or petroleum based
products when cleaning the lighting system. Replace any optical components that
may have been scratched or crazed during system installation.
• Do not attempt to activate or deactivate the light system control while driving in a
hazardous situation.
• Frequently inspect the light system to ensure that it is operating properly and that
it is securely attached to the vehicle.
• After installation and testing are complete, provide a copy of these instructions to
instructional sta and all operating personnel.
• File these instructions in a safe place and refer to them when maintaining and/or
reinstalling the product.
Failure to follow all safety precautions and instructions may result in property damage,
serious injury, or death.
RETAIN AND REFER TO THIS MESSAGE

Safety Messages for Operators of Warning Lights
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Installation, Maintenance, and Service Manual
Federal Signal www.fedsig.com
Safety Messages for Operators of Warning Lights
People’s lives depend on your safe use of our products. Listed below are some
important safety instructions and precautions you should follow.
• Do not attempt to activate or deactivate the light system control while driving in a
hazardous situation.
• Although your warning system is operating properly, it may not be completely
eective. People may not see or heed your warning signal. You must recognize
this fact and continue to drive cautiously.
• Situations may occur that obstruct your warning signal when natural and man-
made objects are between your vehicle and others, such as raising your hood or
trunk lid. If these situations occur, be especially careful.
• All eective sirens and horns produce loud sounds that may cause, in certain
situations, permanent hearing loss. You and your passengers should consider
taking appropriate safety precautions, such as wearing hearing protection.
• In order to be an eective warning device, this product produces bright light that
can be hazardous to your eyesight when viewed at a close range. Do not stare
directly into this lighting product at a close range, or permanent damage to your
eyesight may occur.
• It is important that you fully understand how to safely operate this warning system
before use.
• Operate your vehicle and its light/sound system in accordance with your
department’s Standard Operating Procedures.
• If a selected function does not perform properly or if any of the lamps remain
illuminated when the control is o, disconnect the power connector from the
control unit and contact the nearest service center.
• At the start of your shift, ensure that the entire warning light system and the siren
system is securely attached and operating properly.
• Suction cup mounting is for temporary applications only. The unit should be
removed from the window and stored securely when not in use. Temperature
changes and sunlight can cause suction cups to lose holding power. Periodically
check the unit to make sure the suction cups have a firm grip on the mounting
surface. An improperly secured light could fall o of the vehicle, causing injury and
damage.
• Holding power of magnetic mounting systems is dependent upon surface finish,
surface flatness, and thickness of the steel mounting surface. Therefore, to
promote proper magnetic mounting:
• Keep mounting surface and magnets clean, dry, and free of foreign particles
that prevent good surface contact.
• Ensure that mounting surface is flat.
• Do not use a magnet mounting system on vehicles with vinyl tops.

Safety Messages for Operators of Warning Lights
8CN SignalMaster FSJoin™
Federal Signal www.fedsig.com
• To prevent sliding of light assembly on mounting surface, avoid quick
acceleration and hard stops.
Failure to follow these precautions may result in property damage, serious injury, or
death.
RETAIN AND REFER TO THIS MESSAGE

An Overview of the CN SignalMaster™
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Installation, Maintenance, and Service Manual
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An Overview of the CN SignalMaster™
The CN SignalMaster FSJoin™is a single-level LED light bar with ROC™(Reliable On-
Board Circuitry) and Solaris®LED technologies. ROC eliminates approximately 85
percent of potential failure points by incorporating a printed circuit board (PCB) in one
assembly to substantially reduce the number of electrical connections. Solaris S2 LED
modules use oset, complex, reflector surfaces for accurate beam shaping and the
highest optical eciency. The CN SignalMaster is available in eight-head and four-
head models, for both front and rear. It is also available in a rear only, split eight-head
model, with a 12 ft cable joining two four-head units (CNSMJ2X4R).
LED Lights, Colors, and Flash Patterns
The light bar’s internal microprocessor supplies three priority operational modes
and a library of flash patterns. To increase the safety of ocers, pedestrians, and
motorists, the light bar has standard dimming and intersection warning. Multi-color
heads are available with up to three dierent colored LEDs, eliminating the loss of
primary warning colors in takedown and directional warning positions. Individual
CN SignalMaster light heads can flash between red, blue, amber, or white. The
light bar operates at a nominal input of 13.6 Vdc (11 Vdc minimum) and an operating
temperature range of –30°C to +65°C (–22°C to +149°C).
The functions of the SignalMaster are controlled through the CAT5 serial
communication cable. The cable connects to Federal Signal Convergence network
controllers, or the Convergence Serial Interface Module (Part Number 858303641).
With the Serial Interface Module, the light bar can be activated by Federal Signal light
bar controllers, SignalMaster controllers, and/or individual low-current switches.
The housing is an anodized aluminum extrusion. The light bar has 15-foot power and
ground cables and a 25-foot serial cable. Universal mounting hardware is supplied;
vehicle-specific mounting hardware is also available separately.
FSJoin™
FSJoin light bars allow flash patterns to synchronize with other FSJoin-compatible
devices. You can program light bar patterns and features on an individual light head
basis with the Convergence Network Configuration Software. Outputs or light heads
set to the same flash rate automatically synchronize. You can program a variety of
system features with the Convergence Network Configuration Software (available
on the Federal Signal website at www.fedsig.com). Programming requires an FSJoin-
compatible controller such as a Pathfinder®Siren/Light Controller. Programming does
not require disassembling or removing any hardware from the vehicle.

Installing the CN SignalMaster
10 CN SignalMaster FSJoin™
Federal Signal www.fedsig.com
Installing the CN SignalMaster
After unpacking the CN SignalMaster, inspect it for damage that may have occurred
in transit. If it has been damaged, do not install it. File a claim immediately with the
carrier, stating the extent of damage. Carefully check all envelopes, shipping labels,
and tags before removing or destroying them. Ensure that the parts listed in Table 1
are included in the package. If you are missing any parts, contact Customer Support
at 1-800-264-3578, 7 a.m. to 5 p.m., Monday through Friday (CT). An installer-supplied
control head for controlling the functions of the light bar is also required.
Table 1 Mounting kit contents
Qty. Description Part Number
2 Bracket, Mounting, SML 8652180
4 Screw, #10 Type B, Pan 6-Lobe, Blk SS 7011246-06
2 Nut,1/4-20 Keps®,SS 7058050
1 Grommet, Split 228128
NOTE: The CNSMJ2X4R includes two mounting kits.
Mounting the CN SignalMaster™
LOCATING OPERATOR CONTROLS: The controls for the light system must be
located so that the VEHICLE and CONTROLS can be operated safely under all
driving conditions.
SIGNALMASTER ORIENTATION: The CN SignalMaster light bar must be
oriented correctly for proper operation. The assembly should be installed with
the ROC board on top.
IMPORTANT: Plan all cable routing before completing the installation. Plan the
location of the wire-routing hole so that the cables do not have tight bends. For Model
CNSMJ2X4R, ensure the board to board connection is in a dry interior location.
To mount the light bar:
1. Determine the appropriate spacing of the mounting holes for your application.
2. See Figure 1 on page 11. Install the mounting brackets to the CN SignalMaster
with two #10 6-lobe screws per bracket.
3. Mark and drill two 17/64-inch holes for the mounting studs and a 3/4-inch hole for
the cables.
4. Install the grommet, route the cables, then secure the light bar with the 1/4-20
Keps®nuts. Leave slack in the cables behind the panel to ease the removal of the
light bar.