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Connecting the External Sounders
Connections for Self Actuating Bells and Bell/Siren combinations should be made as
outlined in Table 2.2 Connections for SABs and Table 2.3 Connections for Bell/Siren
Only.
C
o
n
n
e
t c
o i
n
s
f
r o
S
A
B
P
a
n
l e
B
B
E
L
L
+
P
B
E
L
L
–
r T
B
E
L
L
T
A
M
P
–
N
B
E
L
L
T
A
M
P
–
R
N
S
T
R
B
t S
Table 2.2 Connections for SABs.
Connecting Power to the System
Mains Power
Mains power for the system is 230 V a.c. 50 Hz (a 24-hour unswitched source). The
three-core mains cable should be brought into the control cabinet through the mains
entry point under the mains terminal block. The mains cable should be wired to the
three-way mains input terminal block. The secondary of the mains transformer should
be connected to the two terminals on the control panel PCB marked AC. No connec-
tion should be made to the GND terminal on the Accord PCB.
Note: Do not apply power to the transformer at this point.
Stand-by Battery
The system can be protected against mains failure by the addition of a Stand-by
battery; a maximum rating of 7.2 Ahr should be used.
Calculate the system quiescent current draw and multiply this by the number of hours
you require for stand-by cover, for example, 200 mA × 12 hours = 2.4 Ahr. Install the
next battery size up, in this case 2.8 Ahr.
e
l l
s o
i t i
e v
S
u
p p
y l
H /
o
d l
O
f f
/ p i
i S
n g
l a
N
g e
i t a
e v
g e
i t a
e v
S
u
p p
y l
H /
l o
– d
O
g e
i t a
e v
a T
m
p
r e
R
e
u t
n r
o r
e b
N
g e
i t a
e v
i S
n g
l a
C
o
n
n
e
t c
o i
B
e
/ l l
i S
e r
n
P
a
n
l e
B
E
L
L
+
B
E
L
L
-
f f
B
E
L
L
T
A
M
B
E
L
L
T
A
M
S
T
R
B
Table 2.3 Connections for Bell/Siren only.
9
n
f
r o
o
n
y l
B
e
l l
B
l l e
&
t S
o r
e b
B
l l e
N
g e
i t a
e v
P
-
a T
m
p
r e
S
W
C
P
-
R
a T
m
p
r e
S
W
N
t S
o r
e b
N
g e
i t a
P
s o
i t i
e v
o
m
m
n o
C /
e v
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