Federal Signal Corporation GEN-IIB/C User manual

Description, Installation, and User Manual
Non-Metallic Zone 1 Loudspeaker
Models: GEN-IIB/C and GEN-IIB/C-ISMT
25500655
Rev. A1 0123
Printed in U.S.A.
© Copyright 2022-2023 Federal Signal Corporation

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
www.fedsig.com
Technical Support 800-524-3021
All product names or trademarks are properties of their respective owners.

3
Description, Installation, and User Manual
Federal Signal www.fedsig.com
Contents
1.0 Safety Messages................................................................................................................................................4
1.1 Safety Messages to Installers.................................................................................................................4
2.0 General Description ..........................................................................................................................................7
2.1 Introduction.............................................................................................................................................7
2.2 Overview.................................................................................................................................................7
2.3 Features .................................................................................................................................................7
2.4 Unpacking the Loudspeaker...................................................................................................................8
2.5 Ordering Information...............................................................................................................................8
2.6 Certications...........................................................................................................................................8
3.0 Specications ....................................................................................................................................................9
4.0 Specic Conditions for Use..............................................................................................................................9
5.0 Mounting the Loudspeaker.............................................................................................................................10
6.0 Adjusting the Vertical Angle ........................................................................................................................... 11
7.0 Wiring the Loudspeaker.................................................................................................................................. 11
8.0 Setting Transformer Wattage Taps ................................................................................................................13
9.0 Completing the Installation ............................................................................................................................13
10.0 Periodically Inspecting the Loudspeaker....................................................................................................13
11.0 Servicing the Loudspeaker...........................................................................................................................14
12.0 Ordering Replacement Parts........................................................................................................................14
13.0 Getting Service ..............................................................................................................................................15
Tables
Table 1 Ordering Information .................................................................................................................................8
Table 2 Accessories ................................................................................................................................................8
Table 3 Specications .............................................................................................................................................9
Table 4 Wattage tap settings ................................................................................................................................13
Table 5 Replacement parts ...................................................................................................................................14
Figures
Figure 1 Loudspeaker dimensions ...................................................................................................................... 11
Figure 2 Loudspeaker connections for GEN-IIB and GEN-IIC...........................................................................12
Figure 3 Loudspeaker connections for GEN-IIB-ISMT and GEN-IIC-ISMT.......................................................12

4
Safety Messages
Non-Metallic Zone 1 Loudspeaker (GEN-IIB/C and GEN-IIB/C-ISMT)
Federal Signal www.fedsig.com
1.0 Safety Messages
It is important to follow all instructions shipped with this product. This device is to be
installed by trained personnel who are thoroughly familiar with the country’s electric
codes and will follow these guidelines as well as local codes and ordinances, including
any state or local noise-control ordinances.
Planning
• If suitable warning equipment is not selected, the installation site for the system is
not selected properly, or the system is not installed properly, it may not produce the
intended optimum audible warning. Follow the Federal Emergency Management
Agency (FEMA) recommendations.
• If the system is not activated in a timely manner when an emergency condition exists,
it cannot provide the intended audible warning. It is imperative that knowledgeable
people, who are provided with the necessary information, be available at all times to
authorize activation.
• The sound output of the system is capable of causing permanent hearing damage.
To prevent excessive exposure, carefully plan placement, post warnings, and restrict
access to areas near loudspeakers. Review and comply with any local or state noise
control ordinances as well as OSHA noise exposure regulations and guidelines.
• Activating the system may not result in people taking the desired actions if those
to be warned are not properly trained about the meaning of warning sounds. Users
should follow FEMA recommendations and instruct those to be warned of correct
actions to be taken.
After installation, service, or maintenance, test the system to confirm that it is operating
properly. Test the system regularly to confirm that it will be operational in an emergency.
1.1 Safety Messages to Installers
People’s lives depend on your safe installation of our products. It is important to follow
all instructions shipped with this product. This device is to be installed by a trained
electrician who is thoroughly familiar with the National Electrical Code and/or Canadian
Electrical Code and will follow the NEC and/or CEC Guidelines as well as all local codes.
The selection of the mounting location for this system, its controls, and the routing of
the wiring are to be accomplished under the direction of the Facilities Engineer and
the Safety Engineer. Listed below are some other important safety instructions and
precautions you should follow:
• Disconnect the device from the power supply/audio source before any installation or
maintenance is performed.
• Do not open the loudspeaker enclosure when a hazardous atmosphere is present.
• To determine if the device can be used safely in the intended area, review the
Certifications section in this manual.
• Electrocution or severe personal injury can occur when performing various installation
and service functions such as making electrical connections, drilling holes, or lifting
equipment. Therefore, only experienced electricians should install this product in

5
Safety Messages
Description, Installation, and User Manual
Federal Signal www.fedsig.com
accordance with national, state, or province and any other electrical codes having
jurisdiction. Perform all work under the direction of the installation or service crew
safety foreman.
• Read and understand all instructions before installing, operating, or servicing this
equipment.
• All eective warning sounds may, in certain circumstances, cause permanent hearing
loss. Take appropriate precautions, such as wearing hearing protection. The maximum
sound level exposure limits specified in OSHA 29 CFR 1910 should not be exceeded.
• For optimum sound distribution, do not install the loudspeakers where objects would
block any portion of the front of the system.
• Establish a procedure to routinely check the signal system for proper activation and
operation.
• Any maintenance to the unit MUST be performed by a trained electrician in
accordance with NEC Guidelines and local codes or a Federal Signal certified Service
Provider.
• Never alter the unit in any manner.
• The nameplate should NOT be obscured, as it contains cautionary and/or other
information of importance to maintenance personnel.
• After installation and completion of the initial system test, provide a copy of these
instructions to all personnel responsible for the operation, periodic testing, and
maintenance of the equipment.
• File these instructions in a safe place and refer to them when maintaining and/or
reinstalling the device.
Failure to follow all safety precautions and instructions may result in property damage,
serious injury, or death.
Installation and Service
• After installation or service, test the system to confirm that it is operating properly. Test
the system regularly to confirm that it will be operational in an emergency.
• If future service and operating personnel do not have these instructions to refer to,
the system may not provide the intended audible warning, and service personnel
may be exposed to death, permanent hearing loss, or other bodily injuries. File
these instructions in a safe place and refer to them periodically. Give a copy of these
instructions to new recruits and trainees. Also give a copy to anyone who is going to
service or repair the system.
• To reduce the risk of electric shock, do not perform any servicing other than what
is contained in the operating instructions unless you are qualified to do so. Refer all
servicing to qualified service personnel. Always test the system before using after
repairs have been made.
• Concerning the potential electrostatic charging hazard, as mentioned in the certificate
“Specific Conditions of Use,” under normal conditions of use, these devices are for
fixed installations and are not generally in contact with people. The risk of ignition
is low. In addition, maintenance, cleaning, and extreme environmental factors (for
example, high-velocity dust-laden atmospheres or high-pressure steam) should be

6
Safety Messages
Non-Metallic Zone 1 Loudspeaker (GEN-IIB/C and GEN-IIB/C-ISMT)
Federal Signal www.fedsig.com
taken into account by the end user, using local Explosive Atmosphere (Ex) Electrical
installations design, selection, inspection, and maintenance Codes and Standards.
POTENTIAL ELECTROSTATIC CHARGING HAZARD: If the unit requires cleaning,
ONLY clean the exterior with a water-dampened cloth to avoid electrostatic charge
buildup.
FIRE/EXPLOSION HAZARD: Do not open the loudspeaker when it is energized.
Failure to observe this warning could result in serious injury or death.
• Any maintenance to the loudspeaker must be done with the power turned o.
• After disconnecting power, allow ten minutes for the internal components to cool and
to allow all capacitors to discharge.
• Do not open the loudspeaker enclosure when a hazardous atmosphere is present.
• Use only service parts provided by the Federal Signal factory. Only these components
have been verified and certified for use in hazardous areas.
• Any repairs or modifications made to the encapsulated areas will invalidate the
certification. Do not repair flameproof joints.
• The nameplate, which contains cautionary or other information of importance to
maintenance personnel, should not be obscured.
Hazard Classification
Federal Signal uses signal words to identify the following:
DANGER indicates a hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING indicates a hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury.
NOTICE is used to address practices not related to physical injury.
Read and understand the information contained in this manual before
attempting to install or service the system.

7
General Description
Description, Installation, and User Manual
Federal Signal www.fedsig.com
2.0 General Description
2.1 Introduction
This document is a description, installation, and user manual for the GEN-IIB/C and
GEN-IIB/C-ISMT Series Non-Metallic Zone 1 Loudspeaker. Its intended audience are those
assigned to install, use, and maintain the loudspeakers.
2.2 Overview
The Federal Signal non-metallic loudspeakers, models GEN-IIB/C and GEN-IIB/C-ISMT,
are designed for use in industrial public address and general alarm applications where
corrosion resistance and ATEX/IEC Certification are required.
• GEN-IIB/C and GEN IIB/C-ISMT are available in an ATEX/IEC Zone 1 explosion-proof
version certified IP66 for ingress of dust and combustible gas to GroupIIB + H2
(Hydrogen) or Group IIC. The speakers are manufactured from corrosion-resistant,
Glass Reinforced Polyester (GRP).
• GEN IIB/C-ISMT diers from the standard model GEN IIB/C in that it includes an
intelligent speaker monitoring tapping (ISMT) interface built into the speaker to allow
remote monitoring and tapping of the speaker without needing to physically access
the deployed speaker.
• GEN IIB/C and GEN IIB/C-ISMT loudspeakers are designed to accept an audio input of
100VRMS. Each speaker is a transformer coupled with a maximum output of 25W and
is supplied with preset taps (25, 15, 10, and 6) to adjust sound output.
Mounting is supplied by a “common template” stainless steel ratcheted mounting bracket
that locks the loudspeaker in position at a specific angle without slipping. The optional
swivel mounting bracket provides slotted mounting holes to further adjust speaker
position and adapt to a variety of dierent surfaces.
Connection for field wiring is provided by two M20 x 1.5 mm threaded openings in the
speaker housing and terminated via internal terminal blocks. All external hardware is
manufactured from stainless steel to resist corrosion and provide serviceability for years
to come.
2.3 Features
The speaker has the following features:
• SPL: 123 +/-3 dBA at 25 W, 1 m
• 100 VRMS, 25 W audio input
• Re-entrant horn design
• Non-Metallic, Glass Reinforced Polyester (GRP), UV solar resistant housing
• U Mounting bracket included, optional swivel mount bracket available
• IP66 rated
• ATEX and IECEx Certified for Zone 1, Gas Group IIB+H2 or IIC
• Cable entry: 2 x M20 x 1.5 mm

8
General Description
Non-Metallic Zone 1 Loudspeaker (GEN-IIB/C and GEN-IIB/C-ISMT)
Federal Signal www.fedsig.com
2.4 Unpacking the Loudspeaker
After unpacking the loudspeaker, examine it for damage that may have occurred in transit.
If the loudspeaker has been damaged, do not attempt to install or operate it. File a claim
immediately with the carrier stating the extent of the damage. If you are missing any parts,
contact Federal Signal Customer Support. Carefully check all envelopes, shipping labels,
and tags before removing or destroying them.
2.5 Ordering Information
Table 1 Ordering Information
Part Numbers Description
GEN-IIB Corrosion Resistant Loudspeaker, ATEX Zone 1 Rated Gas Group
IIB+H2
GEN-IIB-ISMT Corrosion Resistant Loudspeaker, ATEX Zone 1 Rated Gas Group
IIB+H2
GEN-IIC Corrosion Resistant Loudspeaker, ATEX Zone 1 Rated Gas Group IIC
GEN-IIC-ISMT Corrosion Resistant Loudspeaker, ATEX Zone 1 Rated Gas Group IIC
Table 2 Accessories
Part Numbers Description
K8595172A Swivel Mounting Bracket
2.6 Certications
ATEX and IECEx Certified for Zone1, Gas Group, IIB+H2 or IIC
Certicate Numbers ATEX Certicate Number: UL 22 ATEX 2889X
IECEx Certicate Number: IECEx UL 22.0094X
ATEX coding II 2 G D
Protection
GEN-IIB and GEN-IIB-ISMT
GEN-IIC and GEN-IIC-ISMT
II 2 G Ex db IIB+H2 T4 Gb (Tamb = -50°C to +65°C)
II 2 D Ex tb IIIC T135C Db IP66
II 2 G Ex db IIC T4 Gb (Tamb = -50°C to +65°C)
II 2 D Ex tb IIIC T135°C Db IP66
Standards applied EN60079-0, EN60079-1, EN60079-31, IEC60079-0, IEC
60079-1, and IEC60079-31.
Refer to Certicate Numbers for specic standard versions.

9
Specications
Description, Installation, and User Manual
Federal Signal www.fedsig.com
3.0 Specications
Table 3 Specications
Electrical Audio Line Voltage 100 VRMS
Max rated power 25 W
Enclosure Rating IP66 Indoor/Outdoor Use
Gland Entry 2 x M20 x 1.5 mm
Cable Terminations 0.5 mm2to 4 mm2(20 AWG to 12 AWG)
Size (Height x Length) 232.2 x 347 mm (9.13 x 13.66 inches)
Material Glass Reinforced Polyester (GRP)
Color Black
Audio Input 100 VRMS
Max Audio Output 123 +/-3 dBA at 25 W (1 meter)
Net Weight 6.58 kg (14.5 lb)
Shipping Weight 7.48 kg (16.5 lb)
Ambient Environment T4: −50°C ≤ Ta ≤ +65°C
Max. Surface Temperature 135°C at +65°C ambient
4.0 Specic Conditions for Use
The specic conditions for use:
POTENTIAL ELECTROSTATIC CHARGING HAZARD/INSTALLATION PRECAUTIONS:
• The speaker housing has external non-metallic surfaces that may provide
an electrostatic charging hazard. Under normal conditions of use, these
devices are for fixed installations and are not generally in contact with people.
The risk of ignition is low. In addition, maintenance, cleaning, and extreme
environmental factors (for example, high-velocity dust-laden atmospheres or
high-pressure steam) should be taken into account by the end user, using local
Explosive Atmosphere Ex Electrical installations design, selection, inspection,
and maintenance Codes and Standards.
• The equipment has a metallic mounting bracket that can store electrical
charge and may provide a potential electrostatic charging hazard. The metallic
mounting bracket has a capacitance of 11 pF.
• Due to the high ambient rating of the equipment and the internally generated
temperatures at the entries and branching point of the conductors, select
suitable cable, cable glands, and conductors with a minimum temperature
rating of 85°C.
• Replacement cover screws are not standard fasteners. They must be sourced
from the equipment manufacturer only. Do not repair flameproof joints.

10
Mounting the Loudspeaker
Non-Metallic Zone 1 Loudspeaker (GEN-IIB/C and GEN-IIB/C-ISMT)
Federal Signal www.fedsig.com
• If the equipment contains an unused entry hole after installation, use only
suitable ATEX and IECEx Certified Ex “tb” (IP66) and Ex “db” (IIC gas) rated
components to seal the entry hole before operating. The manufacturer
recommends EATON/REDAPT, Part # PD-U Series stopping plugs.
• The equipment terminal block shall be used with conductor sizes of 0.5 mm2to
4 mm2. The protective earth ground connection conductor size shall equal the
conductor size of the audio input wires at the minimum.
5.0 Mounting the Loudspeaker
DRILLING PRECAUTIONS: When drilling holes, check the area you are drilling into
to ensure you do not damage anything while drilling. All drilled holes should be de-
burred, and all sharp edges should be smoothed.
The Models GEN-IIB/C loudspeakers are designed for mounting on a flat horizontal or
vertical surface.
To mount the loudspeaker, obtain M6 stainless steel bolts, lockwashers, and flat washers.
OBSTRUCTION HAZARD: The nameplate, which contains cautionary or other vital
information to maintenance personnel, should not be obscured.
To mount the loudspeaker:
1. Select a mounting location that is capable of supporting more than 7.5 kg (16.5 lb).
2. Use the mounting bracket as a template to scribe the centers of the mounting holes.
3. Drill an appropriately sized hole at each scribed mark for the mounting screws.
4. Mount the bracket with the installer-supplied bolts and washers.
5. Secure the loudspeaker to the mounting bracket.

11
Adjusting the Vertical Angle
Description, Installation, and User Manual
Federal Signal www.fedsig.com
Figure 1 Loudspeaker dimensions
NOTE: Units are in millimeters [inches].
6.0 Adjusting the Vertical Angle
To adjust the vertical angle of the loudspeaker:
1. Loosen the fasteners on the mounting bracket to disengage the ratchet.
2. Vertically aim the loudspeaker.
3. Hold the loudspeaker in place while tightening the fasteners on the bracket.
7.0 Wiring the Loudspeaker
SHOCK HAZARD: To avoid an electrical shock, do not connect the loudspeaker to
the system while the power is on. Failure to heed this warning may cause serious
injury or death.
Two M20 threaded entries are provided on the side of the housing for the installation
of certified Ex d cable glands. All unused entries must be sealed with a suitably rated
stopper plug.
A terminal block with six-pole screws is provided for field wiring. See Figure 2 on page
12 and Figure 3 on page 12. The terminals are rated for the range of 0.5 mm2to 4
mm2(20AWG to 12 AWG).
Tighten the terminal screws to a torque of 0.45 N·m to 0.50 N·m (4.0 in-lb to 4.4 in-lb).

12
Wiring the Loudspeaker
Non-Metallic Zone 1 Loudspeaker (GEN-IIB/C and GEN-IIB/C-ISMT)
Federal Signal www.fedsig.com
Figure 2 Loudspeaker connections for GEN-IIB and GEN-IIC
2 2
433A
Tapping
Guide
Tap Setting
Jumpers (J2)
Tap Setting
Jumpers (J3)
Speaker Connection (J1)
Audio Input
from Amplifier (IN +)
Audio Input
from Amplifier (IN -)
LOOP IN +
LOOP IN -
GND/SCREEN IN
GND/SCREEN OUT
LOOP OUT +
LOOP OUT -
Figure 3 Loudspeaker connections for GEN-IIB-ISMT and GEN-IIC-ISMT
20000432A
Speaker
Connection (J1)
Audio Input
from Amplifier (IN +)
Audio Input
from Amplifier (IN -)
LOOP IN +
LOOP IN -
GND/SCREEN IN
GND/SCREEN OUT
LOOP OUT +
LOOP OUT -

13
Setting Transformer Wattage Taps
Description, Installation, and User Manual
Federal Signal www.fedsig.com
To wire the loudspeaker:
1. Loosen the six screws securing the rear cover to the loudspeaker, and remove the
cover.
2. Route audio input leads to the LOOP IN+ and LOOP IN- terminals.
The LOOP OUT+/LOOP OUT- terminals may be used to connect to an additional speaker
if required. Loudspeakers in close proximity must be connected in phase.
8.0 Setting Transformer Wattage Taps
The Model GEN-IIB and GEN-IIC loudspeakers have four wattage tap settings that enable
you to select the loudness of each loudspeaker in the system. (See Table 4.) The higher
the wattage tap, the louder the speaker output. Move the jumpers on J2 and J3 to change
the wattage tap.
Table 4 Wattage tap settings
J2 J3 Tap
2-3 2-3 6 W
1-2 2-3 10 W
2-3 1-2 15 W
1-2 1-2 25 W
9.0 Completing the Installation
To complete the installation of the loudspeaker system:
1. Make sure that the cover is properly seated
2. Replace the rear cover and tighten the screws securing it to approximately 10-12 N•m
(90-106 in-lb).
3. Test the speaker system to verify that it operates properly.
10.0 Periodically Inspecting the Loudspeaker
Establishing a regular inspection schedule for the loudspeaker extends the life of
the loudspeaker and ensures safety. For a list of replacement parts, see “Table 5
Replacement parts” on page 14.
• Ensure that the loudspeaker is maintained in line with the regulations in force and at
regular intervals, at least once per year.
• Check for external damage and repair and replace as necessary.
• Check that the gasket is seated properly and that it is not brittle or damaged.
• Periodic checks should be made to ensure that the eectiveness of this device
has not been reduced because the speaker has become clogged with a foreign
substance or because objects have been placed in front of the speaker.
• Check all earth connections.
• Check for water and dust ingress and replace seals as necessary.

14
Servicing the Loudspeaker
Non-Metallic Zone 1 Loudspeaker (GEN-IIB/C and GEN-IIB/C-ISMT)
Federal Signal www.fedsig.com
ELECTROSTATIC CHARGING HAZARD: If the unit requires cleaning, ONLY clean
the exterior with a water-dampened cloth to avoid electrostatic charge buildup.
11.0 Servicing the Loudspeaker
SHOCK HAZARD: To avoid an electrical shock, do not connect the loudspeaker to
the system while the power is on.
The loudspeaker is fully encapsulated and the speaker driver is non-serviceable. If
the driver fails, the entire loudspeaker must be replaced. If it does not operate, verify
continuity of the driver voice coil before replacing the loudspeaker.
To check the continuity of the voice coil:
1. Turn o power to the loudspeaker.
2. Remove the six screws securing the rear cover to the loudspeaker, and remove the
cover.
3. Disconnect the wire harness from J1 on the PCBA.
4. Connect an ohmmeter to the wire harness and confirm that there is continuity. The
DC resistance should read approximately 6 to 7 ohms.
5. If there is not continuity, the entire loudspeaker must be replaced.
12.0 Ordering Replacement Parts
To order replacement parts, contact Federal Signal.
Table 5 Replacement parts
Description Part Number
Standard Mounting Bracket Kit with Ratchets K85952946A
Swivel Mounting Bracket Kit with Ratchets K85952949A
Horn Kit K859502995A
Rear Cover and Gasket Kit K859502997A
Loudspeaker with ISMT PCBA K20000432A
Loudspeaker PCBA K20000433A

15
Getting Service
Description, Installation, and User Manual
Federal Signal www.fedsig.com
13.0 Getting Service
If you are experiencing any diculties, contact Federal Signal Technical Support at
800-524-3021 or [phone] (International) or e-mail at [email protected].
For instruction manuals and information on related products, visit http://www.fedsig.com.

2645 Federal Signal Drive
University Park, Illinois 60484-3167
www.fedsig.com
Technical Support 800-524-3021