Eaton SONIX Mute Ex User manual

SONIXTM Mute
Ex and SA
SonixTM Mute Technical Manual

Sonix Mute Technical Manual
2SONIX MUTE TECHNICAL MANUAL TM376 / A June 2022 www.eaton.com
DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITY
The information, recommendations, descriptions and safety notations in this document are based on Eaton Corporation’s
(“Eaton”) experience and judgment and may not cover all contingencies. If further information is required, an Eaton sales
office should be consulted. Sale of the product shown in this literature is subject to the terms and conditions outlined in
appropriate Eaton selling policies or other contractual agreement between Eaton and the purchaser.
THERE ARE NO UNDERSTANDINGS, AGREEMENTS, WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING
WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, OTHER THAN THOSE SPECIFICALLY
SET OUT IN ANY EXISTING CONTRACT BETWEEN THE PARTIES. ANY SUCH CONTRACT STATES THE ENTIRE
OBLIGATION OF EATON. THE CONTENTS OF THIS DOCUMENT SHALL NOT BECOME PART OF OR MODIFY ANY
CONTRACT BETWEEN THE PARTIES.
In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability or
other-wise for any special, indirect, incidental or consequential damage or loss whatsoever, including but not limited to
damage or loss of use of equipment, plant or power system, cost of capital, loss of power, additional expenses in the use
of existing power facilities, or claims against the purchaser or user by its customers resulting from the use of the informa-
tion, recommendations and descriptions contained herein. The information contained in this manual is subject to change
without notice.
Glossary
Abbreviation Meaning
PA/GA Public Address and General Alarm
Sonix Sonix PA/GA System
A&B Duplicated PA/GA system architecture
N+1 Hot spare PA/GA system architecture
AB+ Sonix improved redundancy architecture
Hmi Human interface
BGM Background music
Tick-tone Short burst of tone repeated every few seconds, used to check the output of connected loudspeakers
Sense Test Periodic test carried by Sonix amplier to check integrity of 100 V line
100 V line High voltage loudspeaker connection line at nominal 100 V ac
MCB Miniature Circuit Breaker
RCBO Residual current circuit breaker with overcurrent protection
Unit ID/Number Unique identier assigned to each of Sonix module, used to identify it to the 2Mx and SAS.
Priority Number assigned to a Sonix audio source to facilitate system usage conict resolution, 31 (highest) to 1 (lowest)
PTT Push to talk
FAT Factory Acceptance Test
SAT Site Acceptance Test
Larson’s Effect When a microphone is acoustically coupled to the loudspeaker and generates feedback
2Mx Sonix 2Mx Central controller
Amp / 350-d Sonix 350 W Power Amplier with 100 V line output
Eol1 Sonix Remote End of Line unit
Eol8 Sonix Amplier to 100 V line interface unit (8 channel)
SP AD Sonix Intelligent loudspeaker monitoring unit
Hmi-Br Sonix intrinsically safe barrier (ATEX/IECEx) for connecting Hmi-5 in explosive atmospheres
Hmi-Mute Sonix 100V loudspeaker mute (Ex/SA)
Hmi-26 Sonix Human Interface access panel
Hmi-5 Sonix Small Human Interface access panel
Io Sonix Input / Output unit
Ms12 Sonix 12-message digital message store
Pbx Sonix Private branch exchange interface unit
Pm10 Sonix Power Management unit
Vw2 Sonix Beacon control and monitoring unit (2 channel)
SAS Sonix Administration Software
Amp Bus A 2Mx bus, used to communicate with and control Sonix Amplier units
HMI Bus A 2Mx bus, used to communicate with and control Sonix Hmi units
I/O Bus A 2Mx bus, used to communicate with and control Sonix input/output devices: IG, Io and Ms12
Beacon Bus A 2Mx bus, used to communicate with and control Sonix Vw2 units
Power Bus A 2Mx bus, used to communicate with and control Sonix Pm10 units
Global Bus A 2Mx bus, used to communicate with SAS application
Sync A 2Mx bus used to communicate with the second 2Mx unit when PA/GA system is congured as A&B, AB+ or N+1
system

Sonix Mute Technical Manual
3SONIX MUTE TECHNICAL MANUAL TM376 / A June 2022 www.eaton.com
Glossary
Abbreviation Meaning
PA/GA Public Address and General Alarm
Sonix Sonix PA/GA System
A&B Duplicated PA/GA system architecture
N+1 Hot spare PA/GA system architecture
AB+ Sonix improved redundancy architecture
Hmi Human interface
BGM Background music
Tick-tone Short burst of tone repeated every few seconds, used to check the output of connected loudspeakers
Sense Test Periodic test carried by Sonix amplier to check integrity of 100 V line
100 V line High voltage loudspeaker connection line at nominal 100 V ac
MCB Miniature Circuit Breaker
RCBO Residual current circuit breaker with overcurrent protection
Unit ID/Number Unique identier assigned to each of Sonix module, used to identify it to the 2Mx and SAS.
Priority Number assigned to a Sonix audio source to facilitate system usage conict resolution, 31 (highest) to 1 (lowest)
PTT Push to talk
FAT Factory Acceptance Test
SAT Site Acceptance Test
Larson’s Effect When a microphone is acoustically coupled to the loudspeaker and generates feedback
2Mx Sonix 2Mx Central controller
Amp / 350-d Sonix 350 W Power Amplier with 100 V line output
Eol1 Sonix Remote End of Line unit
Eol8 Sonix Amplier to 100 V line interface unit (8 channel)
SP AD Sonix Intelligent loudspeaker monitoring unit
Hmi-Br Sonix intrinsically safe barrier (ATEX/IECEx) for connecting Hmi-5 in explosive atmospheres
Hmi-Mute Sonix 100V loudspeaker mute (Ex/SA)
Hmi-26 Sonix Human Interface access panel
Hmi-5 Sonix Small Human Interface access panel
Io Sonix Input / Output unit
Ms12 Sonix 12-message digital message store
Pbx Sonix Private branch exchange interface unit
Pm10 Sonix Power Management unit
Vw2 Sonix Beacon control and monitoring unit (2 channel)
SAS Sonix Administration Software
Amp Bus A 2Mx bus, used to communicate with and control Sonix Amplier units
HMI Bus A 2Mx bus, used to communicate with and control Sonix Hmi units
I/O Bus A 2Mx bus, used to communicate with and control Sonix input/output devices: IG, Io and Ms12
Beacon Bus A 2Mx bus, used to communicate with and control Sonix Vw2 units
Power Bus A 2Mx bus, used to communicate with and control Sonix Pm10 units
Global Bus A 2Mx bus, used to communicate with SAS application
Sync A 2Mx bus used to communicate with the second 2Mx unit when PA/GA system is congured as A&B, AB+ or N+1
system

Sonix Mute Technical Manual
4SONIX MUTE TECHNICAL MANUAL TM376 / A June 2022 www.eaton.com
1. CONTENTS............................................................................3
1.1 List of Tables ..............................................................................5
1.2 List of Figures .............................................................................5
1.3 Glossary ..................................................................................6
2. INTRODUCTION........................................................................7
2.1 Eaton quality assurance .....................................................................7
2.2 Packaging.................................................................................7
2.3 ESD (Electro Static Discharge) ................................................................7
2.4 Safe working practice .......................................................................7
2.5 Required tools .............................................................................7
2.6 In the box ................................................................................7
2.7 Handling .................................................................................7
3 ABOUT THE PRODUCT...................................................................8
3.1 Available features ..........................................................................8
3.2 Conditions for use in hazardous areas ..........................................................8
3.2.1 ATEX/IECEx Certification ..................................................................8
3.2.2 ATEX/IECEx Classification .................................................................8
3.2.3 Entity Parameters .......................................................................8
3.2.4 Special condition for safe use ..............................................................8
3.2.5 Conditions of Manufacture – Routine Tests....................................................8
4 OVERVIEW OF UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.1 Connectors and indicators ...................................................................9
4.2 Weight and dimensions .....................................................................9
4.2.1 Sonix Mute Sa ..........................................................................9
4.2.2 Sonix Mute Ex ..........................................................................9
4.3 Power and utility ...........................................................................9
5 INSTALLATION AND CONNECTIVITY ......................................................10
5.1 Sonix Mute Sa ...........................................................................10
5.1.1 Physical installation .....................................................................10
5.1.2 Glanding ..............................................................................10
5.1.3 Electrical connections (Sonix Mute Sa) ......................................................10
5.2 Sonix Mute Ex ...........................................................................11
5.2.1 Special conditions for Ex area use .........................................................11
5.2.2 Physical installation .....................................................................11
5.2.3 Glanding..............................................................................11
5.2.4 Earthing ..............................................................................11
5.2.5 Electrical connections (Sonix Mute Ex) ......................................................11
5.3 Connecting Mute and Attenuate control inputs (TS2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
5.4 Setup and Configuration ....................................................................12
6 UNIT OPERATION ......................................................................12
6.1 Muted Speaker (Relay RLA) .................................................................12
6.2 Attenuated Speaker (Relay RLC) .............................................................13
6.2.1 Hardware configuration ..................................................................13
6.2.2 Attenuated speaker connections ...........................................................13
7 UNIT CUSTOMISATION .................................................................15

Sonix Mute Technical Manual
5SONIX MUTE TECHNICAL MANUAL TM376 / A June 2022 www.eaton.com
8 COMMISSIONING/TESTING .............................................................15
8.1 Before start .............................................................................15
9 MAINTENANCE .......................................................................15
1.1 LIST OF TABLES
TABLE 1 - ON-BOARD CONNECTORS AND INDICATORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
TABLE 2 - SONIX MUTE SA PORTS.........................................................10
TABLE 3 - SONIX MUTE EX PORTS.........................................................11
TABLE 4 - ATTENUATION LINKS SETTING VALUES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.2 LIST OF FIGURES
FIGURE 1 - GENERAL, SIMPLIFIED VIEW OF THE SONIX MUTE UNIT (PCB) . . . . . . . . . . . . . . . . . . . . . . . . 9
FIGURE 2 - SONIX MUTE SA MOUNTING ...................................................10
FIGURE 3 - CONNECTING SONIX MUTE UNIT IN SAFE AREA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
FIGURE 4 - SONIX MUTE EX MOUNTING ...................................................11
FIGURE 5 - CONNECTING SONIX MUTE UNIT IN EX AREA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
FIGURE 6 - AUDIO CONNECTIONS IN NORMAL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
FIGURE 7 - AUDIO CONNECTIONS IN MUTE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
FIGURE 8 - NORMAL ATTENUATED SPEAKER OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
FIGURE 9 - ATTENUATED SPEAKER OPERATION..............................................13
FIGURE 10 - SELECTING RESISTOR WITH LK1................................................13
FIGURE 11 - CORRECT PRIMARY TAPPED SPEAKER ATTENUATE CONNECTION 14
FIGURE 12 - IN-CORRECT ATTENUATE SPEAKER CONNECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
FIGURE 13 - PRIMARY TAPPED ATTENUATE SPEAKER ACTIVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
FIGURE 14 - PRIMARY TAPPED SPEAKER IN NORMAL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
FIGURE 15 - ATTENUATED NON-TAPPED SPEAKER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Sonix Mute Technical Manual
6SONIX MUTE TECHNICAL MANUAL TM376 / A June 2022 www.eaton.com
2 Introduction
These instructions are intended for all users who have
to install, commission, congure and setup the Sonix
Mute Unit. For this, the manual is action-oriented and
explains how to achieve a certain objective on a step-
by-step basis. It is assumed that you have necessary
electrical, electronic and telecommunications experience
to undertake the work. If in doubt, please consult your
Eaton representative.
2.1 Eaton quality assurance
Eaton design, manufacture, install and commissions all
our products to the highest standards of quality. This
quality process is embraced and adopted throughout the
group in all areas of our operations. This is demonstrated
by our compliance and strict adherence to ISO 9001,
14001, ATEX, IECEX policies. On receipt of the
product, ensure that the cartons are undamaged and
that the contents are all correct and complete. Should
this product reach you in an unsatisfactory condition
please report this to Eaton to enable us to rectify and
investigate the fault in a speedy manner.
2.2 Packaging
In the interest of preserving the environment, Eaton aims
to use recycled packaging wherever practical. Due to the
physical nature of our products, we provide adequate
packaging to protect the goods during transit. Please
ensure that once unpacked, checked and installed that
all packaging is disposed / recycled in a responsible
manner.
2.3 ESD (Electro Static Discharge)
The Sonix PA/GA system is largely constructed from
electronic printed circuit boards. These printed circuit
boards are sensitive to static electricity, ESD discharge
on to any of the Eaton products could cause permanent
and irreparable damage to the equipment. All such
PCB’s are shipped to you in ESD protective bags for
transit. Prior to opening the transit bags please ensure
that you are wearing either an ESD, earthed wrist strap
or other suitable means of protection.
2.4 Safe working practice
Whilst working on or within the Sonix PA/GA system it
is our prime interest that you remain safe throughout.
During this work you may be exposed to potentially
hazardous voltages, currents, conned spaces and
potentially industrial environments.
Prior to undertaking any work please ensure relevant
permits and regulations are adhered to.
2.5 Required tools
To install and commission this part you will need the
following tools.
• Flat screw driver (0.6x3.5) – for internal wiring.
• PH2 screw driver – for cover (only required for Safe
area version of unit).
• Additional tools if the unit is to be fitted on the wall.
2.6 In the box
This item is shipped with the following items.
• 1 x Mute Unit
• 1 x Product Manual
This item is sold as a complete module therefore, no
spares are necessary.
2.7 Handling
The Sonix Mute is designed to be installed in any
location/orientation, care should be taken when
maneuvering the unit into position. This is especially true
when handling the Sonix Mute Ex due to the increased
weight of the unit.

Sonix Mute Technical Manual
7SONIX MUTE TECHNICAL MANUAL TM376 / A June 2022 www.eaton.com
3 About the product
Sonix Mute unit is a compact unit designed to house
the circuitry for local mute control of loudspeakers. The
product is intended for use in areas where local mutable
loudspeakers need to be installed to remove acoustic
feedback (Larsen effect) when making announcements.
The unit mutes the local loudspeaker when the local
access panel is in use for live speech.
The Sonix Mute unit ensures that all muted speakers are
fully monitored as part of the main amplier loop. When
muted, the main loudspeaker loop bypasses the mute
speaker to maintain loop integrity.
The control and connection of local mutable
loudspeakers is especially benecial if relocating or
adding Hmi-26 units, as the cable installation is minimal,
non-intrusive and quick to afx or move.
All inputs and outputs are always designed to be fail safe
and reliable to ensure consistent, unfailing operation.
Sonix Mute unit is available in two variants, with
enclosures suitable for its purpose:
• Sonix Mute Sa – for use in Safe Areas,
• Sonix Mute Ex – for use in Ex Areas
3.1 Available features
Sonix Mute is designed to provide the following
features:
• Robust and reliable operation.
• Loudspeaker mute or attenuation option.
• Removes the need for carrying dedicated mute cables
from PA/GA cabinet.
• Compact enclosure.
• Rapid installation.
• Low maintenance.
3.2 Conditions for use in hazardous areas
3.2.1 Conditions for use in hazardous areas
EU type examination certificate Nr ITS 14 ATEX 28053 X
IECEx ITS 14.0039X
Certified to EN / IEC 60079-0, 60079-1, 60079-
11, 60079-26
Product Hmi 5 Mute and Hmi Mute (D)
Manufacturer Eaton MEDC Ltd (Oxalis)
Unit B, Sutton Parkway
Oddicroft Lane
Sutton-in-Ashfield
NG17 5FB, UK
Applicant Eaton MEDC Ltd (Oxalis)
Unit B, Sutton Parkway
Oddicroft Lane
Sutton-in-Ashfield
NG17 5FB, UK
3.2.2 ATEX/IECEx Classication
Ex II 2 (1) G Ex d [ia Ga] IIC T4 Gb Ex d [ia Ga] IIC T4 Gb
II 2 G Ex d IIC T4 Gb Ex d IIC T4 Ga
Tamb: -40oC up to +60oC 40°C ≤ TA ≤ +60°C
3.2.3 Entity Parameters
Entity Parameter TS2
Ui 11.76 V
Ii 1.45 A
Pi 769 mW
Ci 0 F
Li 0 H
Entity Parameter TS3, TS4, TS5, TS6
Um 250 V
Ii 5 A
Pi 100 VA
3.2.4 Special condition for safe use
• All cable glands, blanking elements and thread
adapters must be suitably certified Ex d IIC Gb and
must provide a minimum degree of protection IP66
For models with intrinsically safe control input:
• It shall be ensured that the relay cannot switch more
than 250 VRMS, 5 A, 100 VA.
• The user or installer is only permitted to connect one
of the two intrinsically safe circuits at terminal block
TS2 at any time.
3.2.4 Conditions of Manufacture – Routine Tests
• None.

Sonix Mute Technical Manual
8SONIX MUTE TECHNICAL MANUAL TM376 / A June 2022 www.eaton.com
4 Overview of Unit
1
25 W Max
2
3
4
6 (Scn)
6 (Scn)
5 (-)
5 (Att)
4 (+)
4 (-)
3 (Scn)
3 (+)
2 (-)
2 (-)
1 (+)
1 (+)
R2
R1
TS5
TS2
TS3
RLA
RLC
LK1
LK2
Mute Attenuate
1 (-) 2 (+) 3 (-) 4 (+)
6
(-5V)
5
(+5V)
4
(-5V)
3
(+5V)
21
J2-J5
HMi-tu /
J9-J10
HMi-26
Mute
Sonix HMi-Tu / HMi-26
Attenuate
MEDC DB4B
100V Line
100V Line
100V Line
Junction
Box
1
25 W Max
2
3
4
6 (Scn)
6 (Scn)
5 (-)
5 (Att)
4 (+)
4 (-)
3 (Scn)
3 (+)
2 (-)
2 (-)
1 (+)
1 (+)
R2
R1
TS5
TS2
TS3
RLA
RLC
Mute Attenuate
1 (-) 2 (+) 3 (-) 4 (+)
6
(-5V)
5
(+5V)
4
(-5V)
3
(+5V)
21
J2-J5
HMi-tu /
J9-J10
HMi-26
Mute
Sonix HMI-tu / HMi-26
Attenuate
MEDC DB4B
100V Line
LK1
LK2
LK1
LK1
Position A
Position B
C
M
Y
CM
MY
CY
CMY
K
ai165231413011_Sonix Mute Technical Manual Pictograms.pdf 1 12/05/2022 01:08
Figure 1 - General, simplied view of the Sonix Mute unit (PCB)
4.1.1 Connectors and indicators
Connector Function
TS2
1 (-) Mute input
2 (+)
3 (-) Attenuate input
4 (+)
TS3
1 (+)
100 V Speaker Loop input2 (-)
3 (Scn)
4 (+)
100 V Speaker Loop output5 (-)
6 (Scn)
TS5
1 (+)
Loudspeaker output
2 (-)
3 (+)
Loudspeaker Return
4 (-)
5 (Att) Attenuated Loudspeaker output
6 (Scn) Screen
LK1 3-way Jumper Links
Pitch spacing: 2.54 mm
LK2 2-way
Table1 - On-board connectors and indicators.
1 x 4-way Phoenix Contact connectors (TS2)
2 x 6-way Phoenix Contact connectors (TS3 and TS5)
Allowable cable sizes:
Solid - Up to 4 mm2,
Stranded - Up to 2.5 mm2 with ferrule.
4.2 Weight and dimensions
4.2.1 Sonix Mute Sa.
This unit is intended for use in Safe Area (non-Ex)
locations.
The PCB is enclosed in a glass reinforced polyester
housing:
Protection rating: IP65
Dimensions (H x W x D mm): 160 x 160 x 90
Weight: 1.5 kg.
4.2.2 Sonix Mute Ex
This unit is intended for use in Zone 1 and Zone 2
explosive gas locations (see certication for complete
details).
The PCB is enclosed in an explosion proof cast
aluminium housing:
Protection rating: IP66
Operating temperature: -40 °C to +60 °C
Dimensions (H x W x D mm): 168 x 168 x 145 (200 x 200 incl.
flanges)
Weight: 3.7 kg.
4.3 Weight and dimensions
Relay voltage: 12 V dc MAX, 10 V nominal
Relay current: 28 mA nominal
Relay power 400mW nominal
Operating temperature: -25 °C to +85 °C
Speaker loading: 250 V RMS, 5 A RMS, 100 VA

Sonix Mute Technical Manual
9SONIX MUTE TECHNICAL MANUAL TM376 / A June 2022 www.eaton.com
5 Installation and connectivity
The Sonix Mute unit is intended to be installed on the
100 V line, between the 100 V audio source (amplier)
and a loudspeaker. The two variants of the unit; Sa and
Ex, will have slightly different connection requirements.
ote:N 100 V Line cables should be, where possible, routed within the
PA/GA system in a separate way to avoid contact with signal, audio or
power cables and reduce the possibility of interference.
For the purpose of this manual, an Eaton MEDC
DB4B loudspeaker has been used as an example for
connecting to the Sonix Mute unit, but any 100 V line
loudspeaker can be used. For attenuated output a
loudspeaker with multiple 100 V line transformer tapping
is recommended.
Similarly, Sonix Hmi-26 and Sonix Hmi-Tu units have
been used for illustrative purposes, but any access
panel with mute and/or attenuate output functionality
capable of generating 10 V dc can be used. For details
on functionality and connections please refer to relevant
product manuals.
ote:N Unit must be securely mounted to ensure it does not become
dislodged during operation
5.1 Sonix Mute Sa
5.1.1 Physical installation
The Sonix Mute Sa is a small plastic unit with four ⌀6.0
mm mounting holes. It is designed to mounted in any
orientation, but care should be taken to avoid potential
water traps.
Figure 2 - Sonix Mute SA mounting
Item Purpose
1Mute control connection
2100 V Speaker out
3100 V Line In
4100 V Line Out
5100 V Speaker return (Optional)
Table 2 - Sonix Mute SA ports
ote:N Unit must be securely mounted to ensure it does not become
dislodged during operation.
5.1.2 Glanding
The Sonix Mute SA unit is supplied with 5off M20
glandentries complete with IP65 rated blanking plugs.
Cable glanding should be completed using suitably rated
M20 glands.
Warning: Un-used entries must be blanked off
with IP65 or better rated blanking plugs.
Warning: All glands and blanking plugs
must be tightened fully and installed as per
manufacturer’s recommended procedure.
ote:N Unit does not need to be earthed and does not contain an
earthing point.
5.1.3 Electrical connections (Sonix Mute Sa)
Figure 3 - Connecting Sonix Mute unit in Safe Area
5.1.3.1 100V line connections
The incoming 100 V Line cables are to be terminated
in ‘Speaker Loop In’ terminals: TS3/1 and TS3/2, with
overall screen wired into TS3/3 terminal. Outgoing 100
V line cables should be terminated in the ‘Speaker Loop
Out’ terminals: TS3/4 and TS3/5, with screen connected
to TS3/6 terminal.
ote:N 100 V Line loop output is an optional connection if unit is at the
end of a spur.
On the opposite side of the unit, the speaker is
terminated into the Loudspeaker Out terminals: TS5/1
and TS5/2. These are connected to the intended tapping
of the speaker’s 100 V Line transformer, as used in
normal conditions for full volume. Wires coming back
from the speaker are terminated in the Loudspeaker
In terminals: TS5/3 and TS5/4. This completes the
100 V Line loop, and if the Sonix 350-d is used, both
Loudspeaker In and Speaker Loop Out are a required
connection for passing the loop continuity test (see
“Sense Test” in Sonix 350-d and SAS product manuals
for details).
Warning: When used as part of a 100 V line
loudspeaker loop, there MUST be an effective
loop back on the speaker output terminals TS5/1
to TS5/3 and TS5/2 to TS5/4. This can be either
inside the unit or at the loudspeaker terminals.
TS5/6 screen terminal is shared for both Loudspeaker In
and Loudspeaker Out cables.
Ø6.0mm
110 mm
172 mm
140 mm
172 mm
Ø9.0mm
1
23
4
5
1
23
C
M
Y
CM
MY
CY
CMY
K
ai165231413011_Sonix Mute Technical Manual Pictograms.pdf 2 12/05/2022 01:08
1
25 W Max
2
3
4
6 (Scn)
6 (Scn)
5 (-)
5 (Att)
4 (+)
4 (-)
3 (Scn)
3 (+)
2 (-)
2 (-)
1 (+)
1 (+)
R2
R1
TS5
TS2
TS3
RLA
RLC
LK1
LK2
Mute Attenuate
1 (-) 2 (+) 3 (-) 4 (+)
6
(-5V)
5
(+5V)
4
(-5V)
3
(+5V)
21
J2-J5
HMi-tu /
J9-J10
HMi-26
Mute
Sonix HMi-Tu / HMi-26
Attenuate
MEDC DB4B
100V Line
100V Line
100V Line
Junction
Box
1
25 W Max
2
3
4
6 (Scn)
6 (Scn)
5 (-)
5 (Att)
4 (+)
4 (-)
3 (Scn)
3 (+)
2 (-)
2 (-)
1 (+)
1 (+)
R2
R1
TS5
TS2
TS3
RLA
RLC
Mute Attenuate
1 (-) 2 (+) 3 (-) 4 (+)
6
(-5V)
5
(+5V)
4
(-5V)
3
(+5V)
21
J2-J5
HMi-tu /
J9-J10
HMi-26
Mute
Sonix HMI-tu / HMi-26
Attenuate
MEDC DB4B
100V Line
LK1
LK2
LK1
LK1
Position A
Position B
C
M
Y
CM
MY
CY
CMY
K
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Sonix Mute Technical Manual
10 SONIX MUTE TECHNICAL MANUAL TM376 / A June 2022 www.eaton.com
TS5/5 terminal is used for alternative tapping of the
speaker’s transformer – this connection is used for
lower volume, i.e. while speaker is being attenuated
(note that there is no returning connection for attenuated
connection).
5.1.3.2 Mute control connections
The mute control connections are found on TS2. The
Sonix Mute Sa can be connected to either the local
Sonix Hmi-26, providing advantages with shorter cable
runs etc., or to the Sonix Hmi-Tu found inside the PA/GA
rack.
Please see section 5.3 for more details.
ote:N The connections are NOT pin to pin and are swapped over.
Connecting pin to pin will most likely cause positive control voltage to
be connected to the negative input.
5.2 Sonix Mute Ex
5.2.1 Special conditions for Ex area use
All cable glands, blanking elements and thread adaptors
must be suitably certied Ex d IIC Gb and must provide
at minimum an IP66 degree of protection.
For models with intrinsically safe control input:
• It shall be ensured that the relay cannot switch more
than 250 V RMS, 5 A RMS or 100 VA.
• The user or installer is only permitted to connect to
one of the two intrinsically safe circuits at terminal
block TS2 at any time.
ote:N The included Installation guidelines do NOT include connections
to any intrinsically safe control source.
5.2.2 Physical installation
Figure 4 - Connecting Sonix Mute unit in Safe Area
Item Purpose
1Mute control connection
2100 V Speaker out
3100 V Line In
Table 3 - Sonix Mute Ex ports
5.2.3 Glanding
The Sonix Mute Ex unit is supplied with 3off M20 gland
entries complete with IP66 Ex-d rated blanking plugs.
Cable glanding should be completed using suitably rated
M20 glands.
Warning: Un-used entries must be blanked off
with Exd and IP66 or better rated blanking plugs,
installed as per guidelines.
5.2.4 Earthing
When installing and operating explosion-protected
equipment, requirements for selection, installation and
operation should be referred to such as IEE Wiring
Regulations and IEC 60079-14. Additional national and/or
local requirements may apply.
The internal earth terminal, where tted, must be
used for the equipment grounding connection and
the external terminal is for a supplementary bonding
connection where local codes or authorities permit or
require such a connection.
The external earth terminal is adjacent to one of the two
mounting points.
5.2.5 Electrical connections (Sonix Mute Ex)
Figure 5 - Connecting Sonix Mute unit in Ex Area
5.2.5.1 100V line connections
As with the Safe Area variant; TS3/1 and TS3/2 (Speaker
Loop In) terminals are used for incoming 100 V Line.
Ex Area requirement: An additional junction box is
required (not supplied and as shown on Figure 5 above)
to carry a 100 V Line to the Sonix Mute unit and avoid
passing more power through the unit than it is certied
to carry.
Loudspeaker connects to TS5/1 and TS5/2 (Loudspeaker
Out) terminals, and TS5/5 (Attenuate) terminal is used
for lower volume (attenuated) connection.
The required use of the junction box renders the
loopback connection obsolete – Loudspeaker In and
Speaker Loop Out terminals remain unpopulated. The
wiring from the junction box to the speaker is now a
spur and cannot be monitored as part of Sonix 350-d
“Sense Test” functionality (see Sonix 350-d and SAS
product manuals for details).
Due to the Ex Area certication, the connected
speaker(s) cannot exceed 25 W of power. If in doubt,
please contact your local Eaton representative.
Ø6.0mm
110 mm
172 mm
140 mm
172 mm
Ø9.0mm
1
23
4
5
1
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1
25 W Max
2
3
4
6 (Scn)
6 (Scn)
5 (-)
5 (Att)
4 (+)
4 (-)
3 (Scn)
3 (+)
2 (-)
2 (-)
1 (+)
1 (+)
R2
R1
TS5
TS2
TS3
RLA
RLC
LK1
LK2
Mute Attenuate
1 (-) 2 (+) 3 (-) 4 (+)
6
(-5V)
5
(+5V)
4
(-5V)
3
(+5V)
21
J2-J5
HMi-tu /
J9-J10
HMi-26
Mute
Sonix HMi-Tu / HMi-26
Attenuate
MEDC DB4B
100V Line
100V Line
100V Line
Junction
Box
1
25 W Max
2
3
4
6 (Scn)
6 (Scn)
5 (-)
5 (Att)
4 (+)
4 (-)
3 (Scn)
3 (+)
2 (-)
2 (-)
1 (+)
1 (+)
R2
R1
TS5
TS2
TS3
RLA
RLC
Mute Attenuate
1 (-) 2 (+) 3 (-) 4 (+)
6
(-5V)
5
(+5V)
4
(-5V)
3
(+5V)
21
J2-J5
HMi-tu /
J9-J10
HMi-26
Mute
Sonix HMI-tu / HMi-26
Attenuate
MEDC DB4B
100V Line
LK1
LK2
LK1
LK1
Position A
Position B
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Sonix Mute Technical Manual
11SONIX MUTE TECHNICAL MANUAL TM376 / A June 2022 www.eaton.com
Ex Area requirement: Maximum speaker load on a Sonix
Mute Ex is 25W.
ote:N In the above examples, the MEDC DB4B 25 W speaker variant
is wired into terminals 1 and 2, which is full power, 25 W, tapping.
Attenuated connection is wired into terminal 4, which at 1 W provides a
significant attenuation effect.
ote:N The level of attenuation will vary with the type and model of the
loudspeaker used.
5.2.5.2 Mute control connections
The mute control connections are found on TS2. The
Sonix Mute Ex can be connected to either the Sonix
Hmi-Tu found inside the PA/GA rack or to the local Sonix
Hmi-26 (non-Ex certied), providing advantages with
shorter cable runs etc. If the Mute Ex unit is associated
with an Hmi-5 unit (either safe area or Ex-I certied)
then the control must be driven from the PA/GA rack.
Please see section 5.3 below for more details.
ote:N The connections are NOT pin to pin and are swapped over.
Connecting pin to pin will most likely cause positive control voltage to
be connected to the negative input.
5.3 Connecting Mute and Attenuate control
inputs (TS2)
For the mute and attenuate functions to work, a
separate 10 to 12 V dc control signal connection is
required for each by the Sonix Mute unit.
Signal Value Sonix
Mute
terminal
Sonix Hmi-26 terminal Sonix
Hmi-Tu
terminal
Mute
control
0 V TS2 / 1 J9/4 [A side] or J10/4 [B side] J[2-5]/4
+10 V dc TS2 / 2 J9/3 or J10/3 J[2-5]/3
Attenuate
control
0 V TS2 / 3 J9/6 or J10/6 J[2-5]/6
+10 V dc TS2 / 4 J9/5 or J10/5 J[2-5]/5
Warning: The Mute and Attenuate control
connections to both the Hmi-26 and Hmi-Tu are
‘crossed-over’
Warning: Observe the polarity of both mute
and attenuate connections, as they are used to
power up relays RLA and RLC (see Figure 1).
Incorrect polarity can cause a driving unit to go
into temporary overload shutdown.
For more details on mute and attenuate functionality and
connection, please refer to Sonix Hmi-26 and Sonix Hmi-
Tu technical manuals.
5.4 Setup and Conguration
There is no system-specic setup required for Sonix
Mute units, and each unit is shipped with both LK1 and
LK2 jumper links (see 6.2.1 Hardware conguration)
shorted by default. The conguration of both jumper
links is usually done during the system commissioning
or while carrying out SAT procedure. These links are
used in setting the level of attenuation the unit provides.
If the unit is intended as a replacement, the position and
polarity of both jumper links needs to be checked and
adjusted if needed.
6 Unit operation
6.1 Muted Speaker (Relay RLA)
Muting of a speaker is achieved by energising relay
RLA (see Figure 1). Making an announcement on the
local (associated with the Sonix Mute unit) access panel
activates its corresponding Mute output. Internally to the
Sonix Mute unit, the 100 V Line audio gets re-routed and
the connected speaker is shorted and therefore muted.
Figure 6 - Audio connections in normal operation
Figure 7 - Audio connections in mute operation
Mute ActiveNormal Operation
100 V Line In
100 V Line In
100 V Line Out
100 V Line Out
Sonix
Mute
X
Sonix
Mute
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Mute Active
Normal Operation
100 V Line In
100 V Line In
100 V Line Out
100 V Line Out
Sonix
Mute
X
Sonix
Mute
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Sonix Mute Technical Manual
12 SONIX MUTE TECHNICAL MANUAL TM376 / A June 2022 www.eaton.com
6.2 Attenuated Speaker (Relay RLC)
Attenuation of a speaker is achieved by energising relay
RLC (see Figure 1). Activating Local Attenuate* on a
Sonix access panel activates the associated Attenuate
output, which – in turn – energizes the corresponding
input of Sonix Mute unit. The 100 V Line audio then gets
internally re-routed to use the attenuated tapping and
the speaker is driven on its lower volume.
ote:N *For the local attenuation to work, the feature must be set to
Enabled in appropriate configuration, see SAS manual for details.
ote:N Initiation of PTT on an access panel activates both Mute
and Attenuate. The Sonix Mute prioritises mute over attenuate and
therefore the speaker remains muted and not attenuated.
Figure 8 -Normal attenuated speaker operation
Figure 9 - Attenuated speaker operation
6.2.1 Hardware conguration
The attenuate output terminal can be congured in
three different output modes using the two selectable
resistors provided (see Figure 1). By removing the
jumper from Link LK2 and shorting LK1 as per Figure 10
(right), one of the two resistors can be selected:
a) Shorting bottom two pins of link LK1 will select
resistor R1 (39 kΩ)
b) Shorting top two pins of link LK1 will select resistor
R2 (15 kΩ)
Figure 10 - Selecting resistor with LK1
Both resistors are rated 2 W to give the equipment a
level of protection in case of loudspeaker output line
short condition.
When LK2 is tted none of the resistors are selected
and position of jumper on link LK1 is irrelevant.
LK1 Setting LK2 Setting Result
--- Closed Externally set attenuation – Tapping or
external resistor
AOpen 39 kΩ series resistance
BOpen 15 kΩ series resistance
Table 4 - Attenuation links setting values
ote:N Due to efficiency gains, it is strongly recommended to use the
loudspeaker tapings where available, and only use the resistors when
necessary.
With a 1W loudspeaker connected in series, the
included resistors provide approximately 14 dB (39 kΩ)
and 8 dB (15 kΩ) of attenuation.
6.2.2 Attenuated speaker connections
The attenuate feature of the Sonix Mute has been
designed to operate with any speaker but operates more
efciently and over a wider power range with primary
tapped speakers.
X
Internal Resistor
OR/ 15k/ 39k
100 V Line Out
100 V Line In
Normal Operation
Sonix
Mute
X X
Internal Resistor
OR/ 15k/ 39k
100 V Line Out100 V Line In
Attenuated Operation
Sonix
Mute
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X
Internal Resistor
OR/ 15k/ 39k
100 V Line Out100 V Line In
Normal Operation
Sonix
Mute
X X
Internal Resistor
OR/ 15k/ 39k
100 V Line Out
100 V Line In
Attenuated Operation
Sonix
Mute
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1
25 W Max
2
3
4
6 (Scn)
6 (Scn)
5 (-)
5 (Att)
4 (+)
4 (-)
3 (Scn)
3 (+)
2 (-)
2 (-)
1 (+)
1 (+)
R2
R1
TS5
TS2
TS3
RLA
RLC
LK1
LK2
Mute Attenuate
1 (-) 2 (+) 3 (-) 4 (+)
6
(-5V)
5
(+5V)
4
(-5V)
3
(+5V)
21
J2-J5
HMi-tu /
J9-J10
HMi-26
Mute
Sonix HMi-Tu / HMi-26
Attenuate
MEDC DB4B
100V Line
100V Line
100V Line
Junction
Box
1
25 W Max
2
3
4
6 (Scn)
6 (Scn)
5 (-)
5 (Att)
4 (+)
4 (-)
3 (Scn)
3 (+)
2 (-)
2 (-)
1 (+)
1 (+)
R2
R1
TS5
TS2
TS3
RLA
RLC
Mute Attenuate
1 (-) 2 (+) 3 (-) 4 (+)
6
(-5V)
5
(+5V)
4
(-5V)
3
(+5V)
21
J2-J5
HMi-tu /
J9-J10
HMi-26
Mute
Sonix HMI-tu / HMi-26
Attenuate
MEDC DB4B
100V Line
LK1
LK2
LK1
LK1
Position A
Position B
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Sonix Mute Technical Manual
13SONIX MUTE TECHNICAL MANUAL TM376 / A June 2022 www.eaton.com
6.2.2.1 Primary tapped speakers
When used with primary tapped loudspeakers, the Sonix
Mute changes one of half of 100 V signal drive onto another
tapping point.
Primary tapped speakers should be connected with TS5/1
(and TS5/3) as the common connection and the attenuate
connection, TS5/5, connected to a lower tapping than the
regular connection from TS5/2 (and TS5/4).
Figure 11 - Correct Primary Tapped Speaker attenuate connection
Figure 12 - In-correct attenuate speaker connection
Warning: It is possible to connect the attenuate
connection to a ‘louder’ tapping and increase the
speaker output instead of attenuating it.
Figure 13 - Primary tapped attenuate speaker active
When the attenuate output is active the loudspeaker will
be driven on the lower tapping only.
ote:N Unless careful consideration is taken, the only valid Link setting
for primary tapped speakers is to have LK2 fitted, see section 6.2.1.
6.2.2.2 Secondary tapped speakers
Sonix Mute does not support dynamic changing of tapping
with secondary tapped speakers. Treat the same as non-
tapped, see section 6.2.2.3 below.
6.2.2.3 Non-tapped speakers
Sonix can only change volume of non-tapped speakers by
placing a current limiting resistor in series with the primary
side of the 100 V line transformer.
The included internal resistors, 15 kΩ and 39 kΩ, are only
suitable for lower powered speakers. Using with higher output
units will result in excessive attenuation.
Warning: The recommended maximum speaker
load that can be connected using the internal
resistors is 1W.
An external resistor can be utilised to provide a different value,
but this is outside of the scope of this manual.
Warning: If using an external resistor, care
must be taken to ensure it can support the
power dissipated within it and that it meets any
certication required. This is NOT covered
by Eaton.
Figure 14 - Primary tapped speaker in normal operation
Figure 15 - Attenuated non-tapped speaker
The correct value of resistor to use depends on the
speaker being muted, see section 6.2.1.
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
TS5
TS5
TS5
X
X
Attenuated
Common
Full
Attenuate Active
Full
Common
Full
Attentuated
Attentuated - Alternative
Attenuated
Common
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1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
TS5
TS5
TS5
X
X
Attenuated
Common
Full
Attenuate Active
Full
Common
Full
Attentuated
Attentuated - Alternative
Attenuated
Common
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1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
TS5
TS5
TS5
X
X
Attenuated
Common
Full
Attenuate Active
Full
Common
Full
Attentuated
Attentuated - Alternative
Attenuated
Common
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X
Internal / External Resistor
Internal / External Resistor
Common TS5
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
Normal Operation
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
TS5
Common
Full
Or
Or
>1 W
≤1 W
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
TS5
X
X
Common
Full
Attenuated Operation
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X
Internal / External Resistor
Internal / External Resistor
Common TS5
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
Normal Operation
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
TS5
Common
Full
Or
Or
>1 W
≤1 W
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
TS5
X
X
Common
Full
Attenuated Operation
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X
Internal / External Resistor
Internal / External Resistor
Common TS5
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
Normal Operation
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
TS5
Common
Full
Or
Or
>1 W
≤1 W
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
TS5
X
X
Common
Full
Attenuated Operation
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X
Internal / External Resistor
Internal / External Resistor
Common TS5
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
Normal Operation
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
TS5
Common
Full
Or
Or
>1 W
≤1 W
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
TS5
X
X
Common
Full
Attenuated Operation
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X
Internal / External Resistor
Internal / External Resistor
Common TS5
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
Normal Operation
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
TS5
Common
Full
Or
Or
>1 W
≤1 W
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
TS5
X
X
Common
Full
Attenuated Operation
C
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X
Internal / External Resistor
Internal / External Resistor
Common TS5
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
Normal Operation
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
TS5
Common
Full
Or
Or
>1 W
≤1 W
1 (+)
2 (-)
3 (+)
4 (-)
5 (Att)
6 (Scn)
TS5
X
X
Common
Full
Attenuated Operation
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Sonix Mute Technical Manual
14 SONIX MUTE TECHNICAL MANUAL TM376 / A June 2022 www.eaton.com
7 Unit customisation
Individual unit customisation is not available for
this unit.
8 Commissioning/testing
8.1 Before start
Check that:
• connection of each cable to and from the system is
correct and the cables are not damaged,
• Mute and Attenuate inputs have the correct polarity,
• correct voltages are provided on Mute and Attenuate
inputs,
• all power and signal conductors are free from Earth,
• there are no short circuits between negative and
positive conductors.
9 Maintenance
Warning: Power off the system or otherwise
isolate 100 V Line input before proceeding.
Although the Sonix Mute unit does not require any
specic maintenance, the following program represents
the minimum care and it is advisable that it will be
performed monthly:
• Check the unit for visible damage (scratches
or bumps).
• Check unit fixing to the surface – tighten
loose screws.
• Check connections and cable integrity - replace
damaged cables, tighten Phoenix connectors.
• Remove dust and dirt from front panel - clean with
a dry cloth.
• Always replace the cover upon maintenance
completion.
ote:N Do not use sharp objects, water, aggressive cleaning agents or
solvent to clean the unit.

Sonix Mute Technical Manual
15SONIX MUTE TECHNICAL MANUAL TM376 / A June 2022 www.eaton.com

All specifications, dimensions, weights and tolerances are nominal (typical)
and Eaton reserve the right to vary all data without prior notice.
No liability is accepted for any consequence of use.
Eaton
Unit B, Sutton Parkway
Oddicroft Lane
Sutton in Ashfield
United Kingdom
NG17 5FB
T: [phone]
www.crouse-hinds.com/hac
[email protected]
© 2022 Eaton
All Rights Reserved
Printed in UK
Publication No.TM376 / A
June 2022
Eaton and SONIX™ are
registered trademarks.
All other trademarks are property
of their respective owners.
Changes to the products, to the information contained in this
document, and to prices are reserved; so are errors and omissions.
Only order confirmations and technical documentation by Eaton is
binding. Photos and pictures also do not warrant a specific layout or
functionality. Their use in whatever form is subject to prior approval
by Eaton. The same applies to Trademarks (especially Eaton, Moeller,
and Cutler-Hammer). The Terms and Conditions of Eaton apply, as
referenced on Eaton Internet pages and Eaton order confirmations.