This
is a Micro Controller based composite Alarm Annunciator
i.e. complete with Hooter, Test, Accept &
Reset push buttons. Hooter is piezo-electric type
for audible alarm and light indication is through
LED’s (Light emitting diodes). This unit
is housed in ABS plastic moulded, door mounting
box and offers a maintenance free long life. Fault
inscriptions are back lighted with multiple
led's behind each window
and can be printed on computer.
For Test button, two types of sequences are
available: 1). Visual indicator & Hooter
test: Window Lights and Hooter gets on and
Window Lights remains
so till test button is kept pressed and hooter
goes off when accept push button is pressed
2). Functional Test: When test button is pressed
it creates fault condition on all the faults
and the sequence of operation is as per details
given below:
When the fault signal is received, the
window light
of the corresponding fault starts flashing
at the rate of 50 flashes/ minute and hooter
gets ON and tripping relay also gets energized
if the corresponding selector switch is 'ON'.
On pressing the Accept button, the window
light become
steady ON and the hooter goes OFF. Tripping
relay (if selected) remains energised.
On pressing the Reset button, if the fault
has been removed, the window light goes OFF and the
tripping relay (if selected) gets de- energised. In case
the fault is persisting, then the sequence
of flashing & hooter is repeated.
All the fault circuits have independent operation.
If one fault has been accepted, the second
fault at this stage will activate the flashing
and hooter again for the second fault.
Operating Voltage
:
12 or 24 VDC or 12 / 24 / 110 / 240 /
415 VAC
Fault Signal required
:
+Ve 12 or 24 V as per operating Voltage
or internal voltage at common point
(-Ve signal can also be accepted on
requirement)
Hooter
:
Continuous Duty Siren like loud sound
(Piezo Electric Type)
Test Accept & Reset Push buttons
:
Snap action sealed type
Tripping Relay
:
PCB mounting, dust proof, with two
changeover contacts rated for 6 Amps.
resistive or 2 Amps inductive
load at 24 VDC/240 VAC
Dimensions
:
(1)
96 x 96x 125mm for 2,4,6,8 fault units.
(2) 96 x
188 x 125 mm for 10, 12, 14, 16 fault
units.
Cut Out
:
92x92 mm (Standard as per voltmeter etc.
for upto 8 faults) & 92 x 184mm for 10,
12, 14, 16 fault units.
EXTERNAL CONNECTION
(For upto 8 fault
Unit)
Selector
switch is provider at back of the unit
for selection of fault relay
energisation.
For
2, 4, 6 fault units balance fault points
are left blank. Similar connection for higher
number of faults units.
