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1 - 2
INSTANT LOOP
This circuit trips the alarm IMMEDIATELY.
It can be used together with an alarm
annunciator with both a connecting (N.
C.) and a disconnecting (N. O.) function.
Connection point 1 is the sensor point and
connection point 2 is the common earthing
point. Connect N. C. connectors in series and
N. O. connectors in parallel. An end resistance
of 10 kOhm must be connected in series to
the circuit to seal it. The circuit is excellent for
magnetic contacts, panic buttons, pressure
carpets and surroundings protection.
3 - 4 DELAYED LOOP
This circuit offers an input delay to trigger
the alarm. It is especially suitable for motion
detectors (e.g. IR detectors) and other
sensors which require delays. The circuit can
be used together with both N. O. and N. C.
components. Connection point 3 is the sensor
point and point two is the common earthing
point. Connect N. C. sensors in series and
N.O. sensors in parallel. An end resistance of
10 kOhm must be connected in series to the
circuit to seal it.
Without delay
With delay
Horn speakers
Loudspeaker output - Horn speakers (4 - 5)
A maximum of two 8 Ohm horn speakers can
be connected in parallel to these connection
points. Point 4 is the output for the siren power
and point 5 is the common plus point for the
entire alarm centre.
Notes
a. If any of the protection circuits do not use a N. C. sensor, a 10 kOhm resistor must
be connected to the circuit (sensor point and common earthing point).
b. The end resistance is connected to the end of the N. C. circuit. We recommend
that it is connected furthest away in the alarm loop. The resistance prevents the N.
C. circuit from being disarmed by the sensor cable being short circuited. Such an
attempt would trigger the alarm.
c. To ensure normal function in the N. C. circuits the maximum circuit resistance in
every circuit should be less than 1 kOhm.
Connection points
