Connecting Mute And Attenuate Control Inputs (Ts2); Setup And Configuration; Unit Operation; Muted Speaker (Relay Rla) - Eaton SONIX Mute Ex Technical Manual

Ex Area requirement: Maximum speaker load on a Sonix
Mute Ex is 25W.
In the above examples, the MEDC DB4B 25 W speaker variant
N ote:
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.
The level of attenuation will vary with the type and model of the
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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 certified), 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 certified)
then the control must be driven from the PA/GA rack.
Please see section 5.3 below for more details.
N ote: 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
Mute 0 V TS2 / 1
control
+10 V dc TS2 / 2
Attenuate 0 V TS2 / 3
control
+10 V dc TS2 / 4
ai165231413011_Sonix Mute Technical Manual Pictograms.pdf
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.
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5.4 Setup and Configuration

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CM
There is no system-specific setup required for Sonix
MY
CY
Mute units, and each unit is shipped with both LK1 and
CMY
LK2 jumper links (see 6.2.1 Hardware configuration)
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shorted by default. The configuration of both jumper
100 V Line In
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
Sonix Hmi-26 terminal Sonix
Hmi-Tu
terminal
J9/4 [A side] or J10/4 [B side] J[2-5]/4
J9/3 or J10/3 J[2-5]/3
J9/6 or J10/6 J[2-5]/6
J9/5 or J10/5 J[2-5]/5
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Normal Operation
Sonix
Mute
SONIX MUTE TECHNICAL MANUAL TM376 / A June 2022 www.eaton.com
Sonix Mute Technical Manual
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
ai165231413011_Sonix Mute Technical Manual Pictograms.pdf
the connected speaker is shorted and therefore muted.
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Y
CM
MY
CY
CMY
K
Figure 6 - Audio connections in normal operation
100 V Line Out
Figure 7 - Audio connections in mute operation
5 12/05/2022
Normal Operation
Sonix
Mute
100 V Line In
Mute Active
X
Sonix
Mute
100 V Line In
01:08
100 V Line Out
100 V Line Out
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