Premier 24 Installation Manual Installation
INS248 23
External Sounder Connections
The following terminals have been provided for connection
to an external sounder:
(A)
+
12V
12V supply (protected by a 900mA PTC – F2). Normally
connected to ‘+12V’ on the sounder.
(B) Bell –
Sounder output, switches to 0V in alarm (SAB) and is rated at
500mA. Normally connected to Trigger -ve on
the sounder. This output can also be programmed for SCB
operation (see page 44 for details).
(C) Tamp
Negative tamper return. Normally connected to ‘Tamper
Out’ on the sounder. If this terminal is not being used, it ust
be connected to ‘0V’.
(D) 0V
0V supply. Normally connected to ‘0V’ on the sounder.
(S) Strb –
Strobe output, switches to 0V in alarm and is rated at
500mA. Normally connected to strobe -ve on the sounder
(where applicable, connect the strobe +ve to +12V).
Te xe c o m E x t e r na l
Sounder
Control
Panel
+12V (A)
0V (D)
Tam per (C)
Strobe -ve (S)
Trigger -ve (B)
!
For details on testing the ‘Bell’ outputs, see page 79
When an Engineers code is entered to gain access to
the programming menu, the Strobe output will pulse
3 times, invoking Engineers Hold Off mode if a
Texecom bell box is connected.