Table of Contents
Advertisement
2.2.3.3 Hmi-5 barrier Connection
The Hmi-5 MUST be operated through an Hmi-Br unit to
ensure correct operation and to also meet the requirements for
safe use in a hazardous area installation. The M4 stud earthing
Hmi-Tu
MUST be attached to the I.S. Earth installed into the cabinet.
Minimum cable size for the I.S. Earth is 4.0 mm
The Hmi-Br has no user replacement parts or controls. Its
function is to limit the power available into the hazardous
area. It provides 4 channels for voltage and currenting limited
connections. Each channel is protected by a fuse which is not
replaceable.
Warning: Repairing or modifying the Hmi-Br will
invalidate its ATEX and IECEx certification.
Warning: The Hmi-Br and Hmi-5 must be used together
to maintain the ATEX and IECEx certification. The Hmi-
Br has only been certified for use with the Hmi-5.
N
ote:
For further information see Appendix A for details of the I.S.
certification details and conditions for safe use.
Certification
Label
Hmi-Tu
J1
I.S. Earth
Non-Hazardous Area
Figure 8 – Hmi-Br connections
J6-9
A side PA/
Hmi-5
GA
Assignment
2off Twisted
Audio 1 +
pair,
Audio 1 -
individual
and overall
Data 1 +
screen.
0.25 mm² to
Data 1 -
2.5 mm² (max
J6-9
ferruled)
Screen (0V)
Hmi-26
Table 10 – Hmi-Br connection details
2.2.3.4 Access panel 0V reference
The interconnecting cable screen provides the 0V return
between the access panels to the Hmi Tu (pin 9/10). The
b
a
b
a
jumper link LK17 selects the correct refence on the Hmi-Tu for
the access panels to work correctly (see Figure 1).
b
a
b
a
Certification
Label
.
2
J1
I.S. Earth
Non-Hazardous Area
J6-9
J2
Hmi-Br
Hazardous Area
Max
J2-5
output
1
Connection
voltage
Mute
+5V
-5V
J1,2 – 1
26.1 V dc
+5V
Attenuate
-5V
6
J1,2 – 2
26.1 V dc
J6-9
J1,2 – 3
7.9 V dc
J1,2 – 4
7.9 V dc
Hmi-26
J1,2 – 5
+48V
0V
J1
D2
b
a
b
a
b
a
b
a
b
a
b
b
a
b
SONIX HMI-TU TECHNICAL MANUAL TM377 / A June 2022 www.eaton.com
Sonix Hmi-Tu Technical Manual
Figure 9 – LK17 0 V reference
2.2.4 Local Mute / Local Attenuate unit
Connections to activate a local mute and/or local attenuate
unit are made into the corresponding channel to match the
access panel channel. Both outputs generate 10 V dc [+5 V
and -5 V] and can drive a minimum load impedance of 300Ω.
These outputs are activated by a push to talk event on the
access panel connected to the associated port. The Attenuate
output is also activated on push to talk but additionally can
Hazardous Area
be manually controlled from a Local Attenuate button on the
same access panel.
Hmi-5
Please observe carefully maximum cable weight due to limited
N
ote:
terminal size.
Hmi-5
Max
output
current
Figure 10 – Mute connections
137.4 mA
A side PA/GA
137.4 mA
36.3 mA
36.3 mA
2off Twisted pair, individual and
overall screen.
0.25 mm² to 1.5 mm² (max ferruled)
Table 11 – Mute connection details
N
ote:
The FLT +1 and FLT -2 are not in use, reserved for future
expansion.
2.2.5 Earth Stud
a
b
The unit provides an M4 earth stud, connected usually to
telecoms earth. This connection is used as a functional earth
by the unit.
a
b
Cable sizing is as follows:
Recommended 4.0 mm
Minimum
9
9
10
10
LK17
LK17
J2
Hmi-Br
J2-5
1
+5V
-5V
+5V
-5V
6
Assignment
FLT +1
FLT -2
+48V
0V
Mute +3
J1
Mute -4
Att +5
D2
Att -6
a
b
a
a
b
a
2
2.5 mm
2
Hmi-5
Mute
Attenuate
Connection
J2,4,3,5 – 1
J2,4,3,5 – 2
J2,4,3,5 – 3
J2,4,3,5 – 4
J2,4,3,5 – 5
J2,4,3,5 – 6
11
L.Spk
CH2
L
1
Matrix
H
1
1
L
1
Matrix
H
1
Sonix 2M
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Advertisement
Table of Contents
