Fig. 3 - Tamper terminal connection according to the selected function mode.
TERMINAL BOARD DESCRIPTION
AP Exponential horn terminals are connected to these terminal board.
Power negative terminal and internal circuit ground.
+N
Power positive terminal. A tension of 13.8 V is applied to this terminal which keeps
the siren battery charged. If for any reason (wire cutting or alarm) this tension fails
the siren is automatically activated.
-A
This terminal may be used as an alternative to the +N terminal for alarm activation:
the siren is activated if the -A is grounded.
S - S2
In the normal functional method the tamper microswitches MS1 and MS2, are
placed in series between these terminals (see fig. 2B). For the automatic functional
method the S2 terminal remains disconnected, whilst the S terminal is grounded
until one of the two tamper microswitches opens (see fig. 2A).
To Next Page
Loading...
