Federal Signal Corporation SelecTone 300SCW-1 Manual

2561090E
Rev. E0 913
Printed in U.S.A.
Installation and Maintenance Manual
Model 300SCW-1 SelecTone®
Wall-Mounted Command Unit
français...............page 19
español...............página 39

2
Warranty – Seller warrants all goods for five years on parts and 2-1/2 years on labor, under the following
conditions and exceptions: Seller warrants that all goods of Seller’s manufacture will conform to any descriptions
thereof for specifications which are expressly made a part of this sales contract and at the time of sale by Seller such
goods shall be commercially free from defects in material or workmanship. Seller reserves the right at the Seller’s
discretion to “Repair and Return” or “Replace” any item deemed defective during the warranty period. This warranty
does not cover travel expenses, the cost of specialized equipment for gaining access to the product, or labor charges
for removal and reinstallation of the product. This warranty shall be ineffective and shall not apply to goods that have
been subjected to misuse, neglect, accident, damage, improper maintenance, or to goods altered or repaired by
anyone other than Seller or its authorized representative, or if five years have elapsed from the date of shipment of the
goods by Seller with the following exceptions: lamps and strobe tubes are not covered under this warranty. Outdoor
warning sirens and controllers manufactured by Federal Warning Systems are warranteed for two years on parts and
one year on labor. No agent, employee, representative or distributor of Seller has any authority to bind the Seller to
any representation, affirmation, or warranty concerning the goods and any such representation, affirmation or warranty
shall not be deemed to have become a part of the basics of the sales contract and shall be unenforceable. THE
FOREGOING WARRANTIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES OR MERCHANTABILITY,
FITNESS FOR PURPOSE AND OF ANY OTHER TYPE, WHETHER EXPRESS OR IMPLIED. These warranties shall
not apply unless Seller shall be given reasonable opportunity to investigate all claims for allegedly defective goods.
Upon Seller’s instruction a sample only of allegedly defective goods shall be returned to Seller for its inspection and
approval. The basis of all claims for alleged defects in the goods not discoverable upon reasonable inspection thereof
pursuant to paragraph 8 hereof must be fully explained in writing and received by Seller within thirty days after Buyer
learns of the defect or such claim shall be deemed waived.
2645 Federal Signal Drive • University Park, IL 60484
Tel: [phone] • 877-289-3246. Fax: [phone]
[email protected] • www.federalsignal-indust.com • www.fs-isys.com

Model 300SCW-1 Wall-Mounted Command Unit
3
Table of Contents
Safety Message to Installers of Federal Signal Products................................................................... 5
Unpacking the Product .......................................................................................................................... 5
An Overview of the Model 300SCW-1................................................................................................... 5
Chassis Description .......................................................................................................................................7
Front Panel Features ......................................................................................................................................7
Control Circuitry............................................................................................................................................7
TEST Pushbutton...........................................................................................................................................7
CANCEL Pushbutton ....................................................................................................................................8
Audio Inputs ..................................................................................................................................................8
Power Requirements......................................................................................................................................8
Recommendation for the Signal Lines............................................................................................... 11
Connecting Signal Lines of the SelecTone System to the 300SCW-1 ........................................................11
Connecting to Remote Devices........................................................................................................... 12
Balanced Line Application ..........................................................................................................................12
Unbalanced Line Application ......................................................................................................................13
Connecting a Low-Level Audio Output ......................................................................................................14
Connecting to Remote Switches for Tone Activation ....................................................................... 14
Installing SelecTone Tone Modules.............................................................................................................15
Two Methods of Supplying Power to the SelecTone System........................................................... 15
120 Vac 50/60 Hz Local Power System.......................................................................................................15
24 Vdc Central Power System.....................................................................................................................16
Connecting Power to the SelecTone System..................................................................................... 17
For 240 Vac Operation.................................................................................................................................17
For 24 Vdc Operation ..................................................................................................................................17
Safety Messages to Maintenance Personnel..................................................................................... 17
Getting Replacement Parts.................................................................................................................. 18
Getting Repair Service or Technical Assistance .............................................................................. 18
Returning a Product for Credit............................................................................................................ 18
Tables
Table 1 Product specications ............................................................................................................................8
Table 2 Replacement parts ...............................................................................................................................18

Model 300SCW-1 Wall-Mounted Command Unit
4
Figures
Figure 1 Model 300SCW-1 installation dimensions............................................................................................6
Figure 2 Connections on the back of Model 300SCW-1...................................................................................12
Figure 3 Model AM25CK connections (balanced line)......................................................................................12
Figure 4 25 Vrms connections..........................................................................................................................13
Figure 5 Model 300CK connections (unbalanced line).....................................................................................13
Figure 6 Low-level audio output connections ...................................................................................................14
Figure 7 Remote switch contacts for tone modules 1 through 4.......................................................................14
Figure 8 Typical local power system..................................................................................................................15
Figure 9 Typical central power system .............................................................................................................16
SelecTone is a registered trademark of Federal Signal Corporation.
© 2013 Federal Signal Corporation. All rights reserved.

Installation and Maintenance Manual
Model 300SCW-1 Wall-Mounted Command Unit 5
Safety Message to Installers of Federal Signal Products
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. In addition, listed below are some other important
safety instructions and precautions you should follow:
• This device is to be installed by a trained electrician who is thoroughly familiar with the National
Electric Code and will follow the NEC guidelines as well as local codes.
• Consult the authority having jurisdiction in your area regarding the proper use and installation of this product.
• The selection of the mounting location for the device, its controls and routing of the wiring is to be
accomplished under the direction of the Facilities Engineer and the Safety Engineer.
• Read and understand all instructions before installing or operating this equipment.
• Do not connect this unit to the system when power is on.
• Optimum sound distribution will be severely reduced if any objects are in front of the speaker. You
should ensure that the front of the speaker is clear of any obstructions.
• All effective warning speakers produce loud sounds which may cause, in certain situations, permanent
hearing loss. You should take appropriate precautions such as wearing hearing protection.
• All effective warning speakers produce loud sounds, which may cause, in certain situations, permanent
hearing loss. The device should be installed far enough away from potential listeners to limit their
exposure while still maintaining its effectiveness. The OSHA Code of Federal Regulations 1910.95
Noise Standard provides guidelines, which may be used regarding permissible noise exposure levels.
• After installation, test the sound system to ensure proper operation.
• ShowtheseinstructionstoyourSafetyEngineerandalloperatingpersonnel,andthenletheminasafe
place and refer to them when maintaining and/or reinstalling the unit.
• Establish a procedure to routinely check the sound system for proper activation and operation.
Failure to follow all safety precautions and instructions may result in property damage, serious injury, or death.
Unpacking the Product
After unpacking the product, examine it for damage that may have occurred in transit. If the 300SCW-1 has
been damaged, do not attempt to install or operate it. File a claim immediately with the carrier, stating the extent
of the damage. Disposal of all shipping materials must be carried out in accordance with national and local
codes and standards. Carefully check all envelopes, shipping labels, and tags before removing or discarding
them. If any parts are missing, please call Federal Signal Customer Support at 708-534-4756 or 877-289-3246.
An Overview of the Model 300SCW-1
The Model 300SCW-1 SelecTone® Command is a central control device that is capable of generating up
tofourdifferenttonesignalsonanaudiolinethatisconnectedtoremotespeaker/ampliersinaSelecTone
System. The 300SCW-1 can control signal lines to Federal Signal Models 300GC, 300GCX, 300X, 302GC,
302GCX,302X,and50GCspeaker/ampliersandtootherdevices.Itcanalsooperatewithstandard

Installation and Maintenance Manual
Model 300SCW-1 Wall-Mounted Command Unit
6
speakers designed for 25 Vrms line operation (15 W max.). The 300SCW-1 has public address (PA)
capability, allowing voice messages or instructions to be announced over the SelecTone system through an
optional Model MNC-1 microphone. The microphone is a handheld, noise-canceling microphone that is
ideal for use as a local microphone. The Command Unit can also play background music generated from an
external source over the SelecTone system.
The Model 300SCW-1 must be installed only in indoor (NEMA 1) or other protected installations. It can be
mounted on any horizontal surface using #10 screws, appropriate for the type of mounting surface material,
and the four mounting holes in the 300SCW-1 housing (see Figure 1).
Figure 1 Model 300SCW-1 installation dimensions
290A7336
2.09 in
5.31 cm
4.63 in
11.76 cm
2.77 in
7.04 cm
2.77 in
7.04 cm
7.72 in
19.61 cm
REAR VIEW
12.78 in
32.46 cm
KNOCK-OUT PROVISION
DIAMETER 0.87 in (2.21 cm) (3 PLACES)
ACCESS HOLE FOR
POTENTIOMETER
ADJUSTMENT
The Model 300SCW-1 can be used for a variety of prioritized signaling purposes, such as playing
backgroundmusic,auxiliaryrealarm,evacuationalarm,startanddismissal,paging,andotheremergency
warning applications. The system can be automated if external devices such as heat detectors, switches or
program clocks are connected to the remote control inputs. Additional advantages of the Model 300SCW-1
includeeconomicalsystemexpansionalongwithlong-termsystemexibility.
TheModel300SCW-1generatesandampliestoneandaudiosignalsandappliesthemthroughsignal
lines to the remote SelecTone devices in the system. A Model AM25CK Connector Kit is required in
each SelecTone device to connect the SelecTone devices to the signal line. Speakers designed for 25-volt
operation can connect directly to the 25-volt output. The 300SCW-1 has provisions for up to four SelecTone
tone modules of your choice. The tones are designated as Tone 1, Tone 2, Tone 3, and Tone 4. Each tone can
be manually activated locally by its associated pushbutton switch on the control panel or by a contact closure
at the associated remote control input. Whenever a tone is activated, either locally or remotely, its associated
LED on the control panel pushbutton lights to indicate that the tone has been activated. The LED remains lit
until the tone is deactivated and the contact closure is removed. All 300SCW-1 controls are located on the
control panel.

Installation and Maintenance Manual
Model 300SCW-1 Wall-Mounted Command Unit 7
Chassis Description
The Model 300SCW-1 is assembled in a red, powder-coated steel cabinet approximately that is 11.25 in
(28.57 cm) high by 16.23 in (41.22 cm) wide by 4.06 in (10.31 cm) deep with a hinged front cover.
The cover contains a window through which the pushbutton switches can be seen. The cover is secured
to the housing through a hinge and key-operated lock. Space is provided along the right side of the
enclosure for storage of the optional MNC-1 microphone.
Alongtheleftsideoftheenclosurearetwoeldwiringcompartmentsthatarebafedofffromthe
printed circuit board area. Access to these compartments is gained by removing the fastening screw from
the control panel, allowing it to open on a hinge. One compartment is for the connection of the Class II
power and signal lines, and the other is for the connection of the Class I power lines. These areas are
provided with knockouts to allow the external wiring to enter the unit through appropriate installer-
supplied bushings.
Front Panel Features
The printed circuit board (PCB) for the switches is attached to the control panel with four screws. A
wiring assembly connects the switchboard to the main PCB. The main PCB is attached to a subplate
with eight screws. The control panel switches are designated as TONE 1 through TONE 4, AUX, TEST,
and CANCEL. The tone corresponding to each switch can be labeled in the white area next to the switch
with a permanent felt-tip marker. If you are changing a tone or message, remove the marking by lightly
rubbing it with a rag dampened with denatured alcohol. To avoid damaging the switches, ensure that the
alcohol does not come in contact with them.
Control Circuitry
The control circuitry in the 300SCW-1 has a built-in priority-level feature. If a given tone is already
sounding when a higher priority tone is locally or remotely activated, the higher priority tone
automatically overrides the lower priority tone. However, the pushbutton LED for the lower priority
tone remains lit to indicate that the lower priority tone remains activated. When the higher priority tone
is deactivated, the LED in the pushbutton lights, and the lower priority tone resumes sounding. Pressing
the CANCEL pushbutton deactivates any currently active tones. The local microphone has the highest
priority. All of the tones have priority by number sequence and all have priority over remote PA and
background music.
Because Tone 1 has priority over all other tones, the TM9 “Slow Whoop” tone module is frequently
installed in the Tone 1 position as a “Fire” signal. Whenever the 300SCW-1 is activated, and is not in
the test mode, a built-in relay causes a set of normally closed contacts to open and a set of normally
open contacts to close, which makes it possible to send an alarm signal to other emergency services or
circuits.Checkwithlocalcodesforspecicrequirementsregardingthetypesoftonestouse.
TEST Pushbutton
The TEST pushbutton enables the testing of tones without activating speakers on the unbalanced signal
lines. During the test the tone is heard only from the monitor speaker inside the enclosure. The TEST
pushbutton also cancels false alarms. Whenever the pushbutton is pressed, the LED remains illuminated
to remind the operator to press the CANCEL pushbutton after the test is completed or the false alarm is
corrected.

Installation and Maintenance Manual
Model 300SCW-1 Wall-Mounted Command Unit
8
CANCEL Pushbutton
The CANCEL pushbutton resets all the manually activated signaling functions of the 300SCW-1. It also
provides a momentary dry-contact closure to facilitate remote resetting of any other alarm circuit. The
contact stays closed as long as the CANCEL pushbutton is depressed. Resetting of remote activation
does not occur if the closure occurring at the remote input has not been removed.
Audio Inputs
A microphone can be connected directly to the 300SCW-1 through two modular jacks provided on
the right side of the unit, inside the cover. These inputs have the highest priority. However, there are
screw terminal provisions for a low-level, low-impedance audio signal to be input in the Class II wiring
compartment of the unit, which allows audio to be coupled from a telephone system (PBX) with the
proper interface equipment supplied by the phone company. This input is designed to also allow the
direct connection of a low-impedance remote microphone with separate PTT, which has priority below
the tones. An RCA jack is provided in the same area of the unit to accept a standard 1-volt audio signal
from a background music source such as a radio receiver, CD player or a tape player.
Power Requirements
SHOCK HAZARD —Do not perform any installation or maintenance on this
system when power is on. Because the 300SCW-1 does not have a power
switch, ensure that the power is disconnected before proceeding. Failure to
heed this warning may cause serious injury or death.
The control panel has a green LED to indicate the presence of primary power. The 300SCW-1 can be
operated from either a 120 Vac, 240 Vac, or 24 Vdc power source. The AC power is connected via a
terminal block located in the Class I wiring compartment, and the 120/240 Vac operation must be manually
switched internally while 24 Vdc connects via the terminals in the Class II wiring compartment.
Table 1 Product specications
Power Input
Input Voltage 120/240 Vac, 50 Hz to 60 Hz
Standby Current 50 mA, 120 Vac
25 mA, 240 Vac
Operating Current 210 mA (max.)
Power Consumption 26 W (max.)
Emergency Power Source Input
Input Voltage 22 Vdc to 32 Vdc
Standby Current 90 mA
Operating Current 760 mA
Audio Inputs
Local PA (use optional Model MSB-1 microphone)
Input Impedance 5 kΩ
Input Voltage 16 mVrms (max.)

Installation and Maintenance Manual
Model 300SCW-1 Wall-Mounted Command Unit 9
Table 1 Product specications (continued)
Remote Microphone
Input Impedance 5 kΩ
Input Voltage 16 mVrms (max.)
Auxiliary Input
Input Impedance 5 kΩ
Input Voltage 500 mVrms (max.)
Audio Outputs
Output Impedance
Unbalanced Signal Line 25 Ω (max.)
Unbalanced Signal Line, Standby 120 Ω
Balanced Signal Line 40 Ω (max.)
Low-Level Signal Line 600 Ω
Output Voltage Levels, No Load (< 3% THD)
Unbalanced Signal Line 9 Vrms
Balanced Signal Line 17 Vrms
Low-Level Signal Line 1 Vpp
Output Voltage Levels, Max. Load (< 3% THD)
Unbalanced Signal Line 8 Vrms (25 Ωload)
Balanced Signal Line 15 Vrms (40 Ωload)
Low-Level Signal Line 1 Vpp (600 Ωload)
Tone Output Voltage Levels, No Load (sq. wave)
Unbalanced Signal Line 12 Vrms
Balanced Signal Line 25 Vrms
Low-Level Signal Line 1 Vpp
Tone Output Levels Max. Load (sq. wave)
Unbalanced Signal Line 12 Vrms (25 Ωload)
Balanced Signal Line 20 Vrms (40 Ωload
Low-Level Signal Line 0.56 Vrms (600 Ωload)
Audio Frequency Response, Balanced Signal Line
40 Ω Max. Load, from 250 Hz to 80 kHz
(Reference 1 kHz) -3 dB
40 Ω Max. Load, from 450 Hz to 60 kHz
(Reference 1 kHz) -1 dB
No Load, from 100 Hz to 90 kHz
(Reference 1 kHz) -3 dB
No Load, from 200 Hz to 60 kHz
(Reference 1 kHz) -1 dB

Installation and Maintenance Manual
Model 300SCW-1 Wall-Mounted Command Unit
10
Table 1 Product specications (continued)
Signal to Noise Ratio (< 3 % THD)
Local PA 60 dB
Remote Microphone 40 dB
Auxiliary Input 80 dB
Audio Distortion from Auxiliary Input to Balanced Signal
Line Output (40 Ωload)2 %
Internal Speaker
Sound Level at 1 meter 65 dB
Remote Tone Activation Circuit
Type Dry contact closure
Line Impedance 100 Ω (max.)
Circuit Current 50 mA (max.) (12 Vdc)
Remote Microphone Activation Circuit (PTT)
Type Dry contact closure
Line Impedance 100 Ω (max.)
Circuit Current 10 mA (max.) (12 Vdc)
Remote Contact Closure Outputs
Tone 1, Tone 2, Tone 3, Tone 4, Sig. Out, Aux., Test and Cancel Relays
Type Dry contact closure
Rating 24 Vdc, 1 A, resistive
Fuses
F1 Type GMC-1, 1 A, 250 V
F2 Type GMC-1/2, 1/2 A, 250 V
Physical Specications
Weight
Shipping 15.0 lb (6.8 kg)
Net 13.4 lb (6.1 kg)
Dimensions (HWD) 11.25 in x 16.23 in x 4.06 in
(28.57 cm x 41.22 cm x 10.31 cm)

Installation and Maintenance Manual
Model 300SCW-1 Wall-Mounted Command Unit 11
Recommendation for the Signal Lines
REDUCED SOUND OUTPUT —If too small a diameter cable is used, unacceptable
signal voltage drop in the signal line will cause reduced sound output from the
remote signal device. Only use a cable having wire diameter greater than 22 AWG.
The signal lines transfer tone signals and verbal messages from the 300SCW-1 to the remote SelecTone
devices. To reduce the possibility of cross talk, hum, and static noise pickup, the signal lines must be twisted-
pair, shielded audio cable. In the majority of systems, use AWG 18 twisted-pair audio cables. Federal Signal
does not recommend that new or existing telephone lines be used as signal lines in a SelecTone system for
the following reasons:
✓Interference from other services or systems, or interference from the system to other services
✓Cross talk, interference, or hum induced by other telephone lines
✓Extended downtime because of the second party involvement required to service the lines
✓The additional cost of installation, interfacing devices and monthly charges as opposed to a one-time
cost of performing the installation
Connecting Signal Lines of the SelecTone System to the 300SCW-1
CROSSTALK INTERFERENCE —Mixing signal lines with power lines could
cause electrical interference, which could impede or render the system
inoperable. Do not install signal lines in the same conduit with power lines.
SHOCK HAZARD —Do not install signal lines in the same conduit with power
lines. Avoid routing signal lines on cable trays with high voltage power lines.
See Figure 2 on page 12. To connect signal lines of the SelecTone system to the 300SCW-1, connect a
color-coded twisted pair of audio cables with conductors no smaller than 18 AWG to TB1-4 and TB1-5
terminals on TB1. Every remote SelecTone signaling device in the system can be connected in parallel
or series to these lines.
For non-SelecTone 25 Vrms speakers, such as ceiling speakers, connect the signal lines directly to
TB1-4 and TB1-5 of terminal block TB1. Signal line losses need to be considered when calculating how
many speakers can be connected to the 300SCW-1.

Installation and Maintenance Manual
Model 300SCW-1 Wall-Mounted Command Unit
12
Figure 2 Connections on the back of Model 300SCW-1
290A7337
AC POWER IN
TB1 TB2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
SHIELDED
TWISTED PAIR
SIGNAL LINES
FROM EXTERNAL
SWITCHING DEVICES
KNOCKOUTS
CLASS I FIELD
WIRING COMPARTMENT
ACCESS HOLE FOR
POTENTIOMETER ADJUSTMENT
CLASS II FIELD
WIRING COMPARTMENT
SIG COM. SIG HI SIG 1V SIG 25 VRMS
SIG OUT TEST
SIG N.O. COM. N.C. N.O. COM. N.C. N.O. COM. N.O. COM. N.O. COM. N.O. COM. N.O. COM. N.O. COM. GND TONE 1
TONE 1 TONE 2 TONE 3 TONE 4 AUX RESET 24 VDC
TONE 2 TONE 3 TONE 4 MIC AUDIO IN
AUX AUDIO IN
AUX PA TONE
PTT MIC COM - +
EARTH GROUND PHASE COMMON
MIC
Connecting to Remote Devices
Physically install the remote SelecTone device(s) following the instructions included with the device.
Balanced Line Application
For 300GC, 300GCX, 300X, 302GC, 302GCX, 302X or 50GC speakers, an AM25CK Connector Kit is
required for connection to the balanced signal output of the 300SCW-1. The AM25CK properly terminates
thebalancedsignallinestotheamplierinthe300GC,300GCX,300X,302GC,302GCX,302Xand
50GC. As shown in Figure 3, connect the white input wires on the AM25CK to the terminals TB1-4 and
TB1-5 of terminal block TB1 on the 300SCW-1. The AM25CK and AM70CK Connector Kits are NOT
polarity sensitive, but polarity must be observed when placing speakers in close proximity to each other.
Figure 3 Model AM25CK connections (balanced line)
300GC
TERMINAL BLOCK (TB1)
ON REAR OF 300SCW-1
AM25CK
300GC
AM25CK
4 5
290A7338
SHIELDED TWISTED PAIR
SIGNAL LINE TO ADDITIONAL
SELECTONES

Installation and Maintenance Manual
Model 300SCW-1 Wall-Mounted Command Unit 13
See Figure 4. For 25 Vrms line operated speakers, connect them directly to the balanced signal output of
the 300SCW-1. Connect the speakers in parallel to the terminals TB1-4 and TB1-5 of terminal block TB1
on the 300SCW-1. Unlike the unbalanced line output, this output is not switched.
IMPORTANT: Use the balanced signal output only if there are no SelecTone system devices connected
to the unbalanced signal output (across TB1-1 and TB1-2).
Figure 4 25 Vrms connections
290A7340
SIGNAL LINES
SHIELDED
TWISTED PAIR
MODEL 300SCW-1 AC POWER IN
4 5 17 1 16
TB-1 TB-2
Unbalanced Line Application
For existing SelecTone systems using the 300CK Connector Kit, use the unbalanced signal outputs
on the 300SCW-1. A 300CK Connect Kit is required to connect a 300GC, 300GCX, 300X, 302GC,
302GCX, 302X or 50GC to the unbalanced signal lines. The 300CK properly terminates the signal
linestotheamplierinthe300GC,300GCX,300X,302GC,302GCX,302Xand50GC.Connectthe
blue wire on the 300CK to the SIG COM wire from the 300SCW-1 and connect the yellow wire on the
300CK to the SIG HI wire from the 300SCW-1 as shown in Figure 5.
Figure 5 Model 300CK connections (unbalanced line)
290A7339
300GC
TERMINAL BLOCK (TB1)
ON 300SCW-1
YEL BLU YEL BLU
300CK
300GC
300CK
COM SIG
HI
1 2
SHIELDED
TWISTED PAIR
SIGNAL LINE
TO ADDITIONAL
SELECTONES

Installation and Maintenance Manual
Model 300SCW-1 Wall-Mounted Command Unit
14
Connecting a Low-Level Audio Output
See Figure 6. The 300SCW-1 also has a 1 Vpp audio output that can be coupled to the audio input of
anotheramplier.Thislow-leveloutputisavailableacrossterminalsTB1-1andTB1-3.Itcanalsobe
connectedtoananalogberoptictransmittersothataudiocanbetransmittedoveraberopticlinkin
an electrically noisy environment.
Figure 6 Low-level audio output connections
MODEL 300SCW-1
290A7344
AC POWER IN
TO EXTERNAL DEVICE
SIGNAL LINES SHIELDED
TWISTED PAIR
1 3 17 1 16
TB1 TB2
Connecting to Remote Switches for Tone Activation
The 300SCW-1 tones can be activated remotely by any normally open, low-current switch contacts with
a current capacity of at least 50 mA inductive. Figure 7 illustrates the connection of switch contacts to the
300SCW-1. The designations S1, S2, S3, and S4 represent remote switch contacts such as those found in
owswitches,programclocks,heatdetectors,andsmokedetectors.Theremotelyactivatedtonesoundsas
long as the activating contacts remain closed.
Figure 7 Remote switch contacts for tone modules 1 through 4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 2
GND
TONE 1
TONE 2
TONE 3
TONE 4
3 4 5 6 7 8 9 10 11 12 13 14 15 16
TB1 TB2
300SCW-1
TONE #2
REAR VIEW
(WITHOUT COVER)
TONE #4
TONE #1
TONE #3
TONE MODULES
290A7341
OPTIONAL REMOTE SWITCH
CONTACTS
(CUSTOMER SUPPLIED)
S1
S2
S3
S4

Installation and Maintenance Manual
Model 300SCW-1 Wall-Mounted Command Unit 15
Installing SelecTone Tone Modules
SHOCK HAZARD —Do not perform any installation or maintenance on this
system when power is on. Because the 300SCW-1 does not have a power
switch, ensure that the power is disconnected before proceeding. Failure to
heed this warning may cause serious injury or death.
The 300SCW-1 can accommodate up to four SelecTone modules of your choice. To install the tone
modules, insert them into the corresponding receptacles on the printed circuit board. The receptacles
for TONE 1 module and TONE 2 module are located on the motherboard. Receptacles for the TONE 3
module and TONE 4 module are located on the card that plugs into the motherboard.
Two Methods of Supplying Power to the SelecTone System
The two basic methods of supplying power to a SelecTone system are 120 Vac, 50/60 Hz local power and
24 Vdc central power. The following paragraphs describe each method along with the advantages and
disadvantages.
120 Vac 50/60 Hz Local Power System
INSTALLATION PRECAUTION —Improper installation could render this
system inoperable, interfering with the warning nature of this product. The
installation must conform to applicable local and/or National Electrical codes.
See Figure 8. In this system, power is supplied to each remote SelecTone device by connecting it to a
120 Vac supply in the immediate vicinity of the device. If an emergency power source is required, use a
central power system as described in "24 Vdc Central Power System" on page 16.
Figure 8 Typical local power system
290A7342
MODEL 300SCW-1 AC POWER IN
4 5 17 1 16
TB1 TB2
MODEL 300GC
MODEL AM25CK
SIGNAL LINES SHIELDED
TWISTED PAIR
120 Vac 120 Vac 120 Vac
LOCAL PWR. LOCAL PWR.
POWER
LINES

Installation and Maintenance Manual
Model 300SCW-1 Wall-Mounted Command Unit
16
24 Vdc Central Power System
SeeFigure9.Inthecentralpowersystem,alloftheremoteamplierpowerlinesareconnectedin
parallel to one or more centrally located power sources that are 24 Vdc.
Figure 9 Typical central power system
POWER
LINES
MODEL 300GC
120 Vac
MODEL
AM25CK
SIGNAL LINES
SHIELDED
TWISTED PAIR
24 Vdc
POWER
SUPPLY
MODEL 300SCW-1 AC POWER IN
290A7539
4 5 17 1 1615
TB1 TB2
+ –
OUTPUT
+
–
The advantages of a central power system are:
✓The entire system may be independent of local line voltage.
✓The entire system can be switched to an emergency standby power source in the event of a power
failure.
✓The central power system has the added advantage that an auxiliary power supply, such as the
Federal Signal Model PS300 can be used to power the remote devices in the SelecTone system. If
the PS300 is used, it is not necessary to switch the power source if a power failure occurs.
The disadvantages of a central power system are:
✓Heavy power lines are required from the power source to the remote devices in the system. The size
ofthepowerlinesisdependentuponthenumberofampliersandthetotaldistanceofthepower
loop in order to minimize the voltage drop while a tone signal is being generated.
✓Future expansion is limited by the current capacity of the power source and the power lines that
were initially installed.
✓Central power installations must comply with local electrical codes. Most power circuits are Class I
circuits. Therefore, conduit will probably be required. Installation costs are higher than a local
power system.

Installation and Maintenance Manual
Model 300SCW-1 Wall-Mounted Command Unit
17
Connecting Power to the SelecTone System
QUALIFIED INSTALLERS ONLY — This device is to be installed by a trained
electrician who is thoroughly familiar with the National Electric Code and will
follow the NEC guidelines as well as local codes.
SHOCK HAZARD —Do not perform any installation or maintenance on this
system when power is on. Because the 300SCW-1 does not have a power switch,
ensure that the power is disconnected before proceeding. Failure to heed this
warning may cause serious injury or death.
CROSSTALK/INTERFERENCE HAZARD —Mixing power lines with signal lines
can cause cross talk, interference, or hum in the signal lines, which interferes
with the emergency warning capability of this equipment. Do not install power
lines in the same conduit as signal lines.
Operatingpowerisconnectedto300SCW-1throughthe3-positioneldwiringterminalblocklocatedinthe
Class I wiring compartment (see Figure 2 on page 12). The knock-out should be removed and provided with
abushingthroughwhichthepowerlinescanberoutedintotheeldwiringcompartment.The300SCW-1is
factory-set for 120 Vac, 50/60 Hz operation.
For 240 Vac Operation
For 240 Vac operation, open the control panel and slide the voltage selector switch S1, which is located
near the line fuses on the motherboard, to the 240 Vac position.
For 24 Vdc Operation
For 24 Vdc operation, either as a primary or auxiliary source of power, connect the “+” terminal of the
24VdcpowersupplytoterminalTB2-15(+24Vdc)locatedintheClassIIeldwiringcompartment.
Connect the “-” terminal of the 24 Vdc power supply to terminal TB2-16 (-24 Vdc).
Safety Messages to Maintenance Personnel
This device is to be serviced by a trained electrician who is thoroughly familiar with the National Electric
Code and will follow the NEC guidelines as well as local codes.
Thisserviceinformationisforqualiedpersonnelonly.Toavoidelectricshock,donotperformanyservicing
otherthanchangingfuses,unlessqualiedtodoso.Referallservicingtoqualiedservicepersonnel.
Listed below are some important safety instructions and precautions you should follow:
• Do not perform any maintenance on this system when power is on. Because the 300SCW-1 does not
have a power switch, ensure that the power is disconnected before proceeding.
• Read and understand all instructions before operating this system.
• Always insure that the power to the 300SCW-1 is disconnected before removing the metal cover.
• Do not connect this unit to the system when power is on.

Installation and Maintenance Manual
Model 300SCW-1 Wall-Mounted Command Unit
18
• All effective warning speakers produce loud sounds which may cause, in certain situations, permanent
hearing loss. You should take appropriate precautions such as wearing hearing protection.
• After installation, test the sound system to ensure proper operation.
• Establish a procedure to routinely check the sound system for proper activation and operation.
Failure to follow all safety precautions and instructions may result in property damage, serious injury, or death.
Getting Replacement Parts
Typical replacement parts are listed in Table 2. To order accessories and replacement parts, please call
Federal Signal Customer Support at 708-534-4756 or 877-289-3246.
Table 2 Replacement parts
Description Part Number
Motherboard K2001154
Switch board K2001147
Tone Card Connector Board K2001164
Connector Plug, TB1, 17-Position K140A332-17
Connector Plug, TB2, 16-Position K140A332-16
Getting Repair Service or Technical Assistance
Products returned for repair require a Return Authorization form from your local distributor or from
Federal Signal. To obtain repair service or technical assistance from Federal Signal, call 708-534-4756
or 877-289-3246. For instruction manuals and information on related products, visit:
http://www.federalsignal-indust.comgnal-indust.com
Returning a Product for Credit
Product returns for credit require a return authorization from your local distributor prior to returning the
product to Federal Signal. Please contact your distributor for assistance.
Aproductisqualiedtobereturnedforcreditwhenthefollowingconditionsaremet:
• Product is resalable and in the original cartons
• Product has not been previously installed
• Product is the current revision
• Product has not been previously repaired
• Product is a standard product
• Product is not a service part
All returns are subject to a re-stock fee.
Defective products that are returned within the warranty period will be repaired or replaced at Federal
Signal’s sole discretion. Defective products do not include those products with lamp failure.
Circumstances other than those listed above will be addressed on a case-by-case basis.

19
2561090E
Rev. E0 913
Imprimé aux États-Unis
Manuel d'installation et d'entretien
Système de commande mural
SelecToneMD 300SCW-1

20
2645 Federal Signal Drive • University Park, IL 60484
Tel: [phone] • 877-289-3246. Fax: [phone]
[email protected] • www.federalsignal-indust.com • www.fs-isys.com
Garantie – Le vendeur offre pour tous les produits une garantie de cinq ans sur les pièces et de 2,5 ans sur
la main-d’oeuvre, selon les conditions et exceptions suivantes : le vendeur garantit que tous les produits qu’il
fabrique seront conformes aux descriptions correspondant aux spécications qui font expressément partie
de ce contrat de vente et qu’au moment de la vente par le vendeur, de tels produits devront être exempts
de défauts de matériel et de fabrication. Le vendeur se réserve le droit, à sa discrétion, de « réparer et
renvoyer » ou de « remplacer » tout article jugé défectueux durant la période de garantie. Cette garantie
ne couvre pas les frais de voyage, le coût de l’équipement spécialisé pour avoir accès au produit ou les
frais de main-d’oeuvre liés au retrait et à la réinstallation du produit. Cette garantie sera inopérante et ne
s’appliquera pas aux produits qui ont subi un mauvais usage, une négligence, un accident, des dommages
ou un entretien inapproprié, ou aux produits modiés ou réparés par toute personne autre que le vendeur
ou son représentant autorisé, ou si cinq ans se sont écoulés depuis la date de l’envoi des produits par le
vendeur avec les exceptions suivantes : les lampes et les tubes stroboscopiques ne sont pas couverts par
cette garantie. Les sirènes d’alarme extérieures et les appareils de contrôle fabriqués par Federal Warning
Systems sont couverts par une garantie de deux ans sur les pièces et de un an sur la main-d’oeuvre. Aucun
agent, employé, représentant ou distributeur du vendeur n’a autorité pour lier celui-ci à une représentation,
afrmation ou garantie relative aux produits et une telle représentation, afrmation ou garantie ne pourra pas
être considérée comme faisant partie des généralités du contrat de vente et sera inexécutable. LES GARAN-
TIES CI-DESSUS SONT EXCLUSIVES ET TIENNENT LIEU DE TOUTES LES AUTRES GARANTIES
DE QUALITÉ MARCHANDE, DE COMPATIBILITÉ À UN USAGE PARTICULIER OU D’UN AUTRE TYPE,
QU’ELLES SOIENT EXPRESSES OU IMPLICITES. Ces garanties ne s’appliqueront pas si le vendeur n’a
pas la possibilité raisonnable d’enquêter sur toutes les réclamations de produits présumés défectueux. À la
demande du vendeur, un seul échantillon des produits présumés défectueux lui sera renvoyé pour inspection
et approbation. La raison de toute réclamation pour des défauts présumés dans les produits ne pouvant
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défaut. Sinon, une telle réclamation sera considérée comme nulle.
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