2
3
DIL switch
DIL switch
DIL switch
DIL switch
DIL switch
setting
setting
setting
setting
setting
addr 1234567 addr 1234567 addr 1234567 addr 1234567 addr 1234567
1
1000000 11
1101000 21
1010100 31
1111100 41
1001010
2
0100000 12
0011000 22
0110100 32
0000010 42
0101010
3
1100000 13
1011000 23
1110100 33
1000010 43
1101010
4
0010000 14
0111000 24
0001100 34
0100010 44
0011010
5
1010000 15
1111000 25
1001100 35
1100010 45
1011010
6
0110000 16
0000100 26
0101100 36
0010010 46
0111010
7
1110000 17
1000100 27
1101100 37
1010010 47
1111010
8
0001000 18
0100100 28
0011100 38
0110010 48
0000110
9
1001000 19
1100100 29
1011100 39
1110010 49
1000110
10
0101000 20
0010100 30
0111100 40
0001010 50
0100110
51 1100110
61 1011110
71 1110001
81 1000101
91 1101101
52
0010110 62
0111110 72
0001001 82
0100101 92
0011101
53 1010110
63 1111110
73 1001001
83 1100101
93 1011101
54 0110110
64 0000001
74 0101001
84 0010101
94 0111101
55
1110110 65
1000001 75
1101001 85
1010101 95
1111101
56
0001110 66
0100001 76
0011001 86
0110101 96
0000011
57
1001110 67
1100001 77
1011001 87
1110101 97
1000011
58
0101110 68
0010001 78
0111001 88
0001101 98
0100011
59
1101110 69
1010001 79
1111001 89
1001101 99
1100011
60 0011110
70 0110001
80 0000101
90 0101101 100 0010011
101
1010011 106
0101011 111 1111011 116
0010111 121
1001111
102
0110011 107
1101011 112 0000111 117
1010111 122
0101111
103
1110011 108
0011011 113 1000111 118
0110111 123
1101111
104
0001011 109
1011011 114 0100111 119
1110111 124
0011111
105
1001011 110
0111011 115 1100111 120
0001111 125
1011111
126 0111111
Group Address Setting
In Group mode the Sounder Control Unit responds to an additional address referred to as the
“group address”, which is used to activate groups of Sounder Control Units simultaneously. (The
unit continues to respond to its own individual address and report its status from that address in
the normal way.) The group address is selected by the four-segment DIL switch which is factory-
set to 0000. A group address may be any spare address within–and only within–the range 112
to 126 inclusive. The required group address is set by moving one or more of the segments on
the switch to “1”. The following table shows the settings for the group address switch.
DIL
switch DIL
switch
addr setting addr setting
1248
1248
112 1111
121 0110
113 0111
122 1010
114 1011
123 0010
115 0011
124 1100
116 1101
125 0100
117 0101
126 1000
118 1001
119 0001
120 1110
Commissioning
It is important that the Sounder Control Unit be fully tested after installation. An XP95 Test Set,
part no 55000-870, may be used to carry out functional testing of individual units. It can also
be used to perform data integrity tests of an entire loop. For a full technical specifi cation of
the Sounder Control Unit, please refer to the Sounder Control Unit PIN Sheet, PP2094. For further
information on isolators, please refer to PP2090.
Fuse: 1.0A, anti-surge Local supply: 24V (9—32V ) Sounder zone end-of-line resistor: 10K
¹/
3
Watt
Wiring Details
All wiring terminals accept solid or stranded cables up to 2.5mm².
L1 (–ve)
L2 (+ve)
LOOP
SOUNDER
CONTROL UNIT
Note: Polarity must be observed
N/C
COM
N/O
S
SOUNDER –
FUSE
V
e
x –
V
e
x +
LOCAL POWER SUPPLY
FAULT
INPUT
Sounders
with
polarising
diodes
NORMALLY
CLOSED
FAULT
CONTACT
FAULT INPUT
NOT USED
(WIRE LINK
MUST BE
FITTED)
NORMALLY OPEN
FAULT CONTACT
10K
Ω
EOL
VEXT +
VEXT –
VEXT +
VEXT –
+
–
–
+
Current consumption at 28V (no protocol)
switch-on surge, max 120ms 4.0mA
quiescent
1.5mA
sounders
operated
1.7mA
fault
3.6mA
LED Indicators
Three LEDs are fi tted to the PCB to indicate functions as follows:
Isolator
Illuminated yellow when a short circuit on the loop
causes the integral isolator to operate
Sounders On
Illuminated red when sounder relay is energised
Fault
Illuminated yellow under any fault condition (except group
address
confl ict)
Address Setting
The Sounder Control Unit is designed to be polled by the control panel in two ways, individually
or as part of a group. Two DIL switches are provided for setting the addresses.
Note: one switch is sealed with a sticky label. This label should not be removed unless the unit is
to be controlled as part of a group.
Individual Address Setting
The individual address of the Sounder Control Unit is set using the seven-segment DIL switch.
Each segment of the switch must be set to “0” or “1”, using a small screwdriver or similar tool. A
complete list of address settings is shown opposite.
