Dwyer Instruments AN24 Series, Instruction Manual

Page: 11 / 21

AN24 & AN28 Annunciators Instruction Manua
11
Setup and Programming
Overview
There are no jumpers involved in the setup process
of the annunciator. The sequence selector switch
located on the rear of the annunciator above the
signal connector must be set accordingly for
annunciator sequence desired.
Normally open or normally closed input setup,
relay fail-safe, and additional sequence options
are programmed with the front panel pushbuttons.
After power and signal connections have been
completed and verified, and the sequence selector
switch has been set appropriately, apply power to
the annunciator.
For Quick Setup Guide go to page 5 .
Front Panel Pushbuttons and
Status LED Indicators
Button Description
Silence Horn
Acknowledge
Alarm
Reset Clear
Input Channels
LED Description
Red
Indicators
1
Channel status
indicators
Green
Indicator Indicates power
is on.
1. Quantity 4 red LED on the AN24
Quantity 8 red LED on the AN28
Pushbutton Descriptions
SILENCE
Silences the audible alarm without affecting the
indication sequence states. This pushbutton may be
disabled (see
Audible Horn Enable/Disable , page 14 ).
ACK (Acknowledge)
Acknowledges alarmed channels. See selected
sequence details for complete function description
(see
Full Sequence Descriptions , page 16 ).
RESET
Resets all acknowledged channels. This button is not
used on ISA sequences A, F1A, and F2A, which reset
acknowledged channels automatically. See selected
sequence details for complete function description
(see
Full Sequence Descriptions , page 16 ).
LED TEST (SILENCE & ACK)
Press and release the SILENCE and ACK
pushbuttons to flash the channel indicator LEDs
for a lamp test.
Full Function Test
Press and hold SILENCE and ACK for 5 seconds to
perform a function test. This tests the sequence
operation and hardware by simulating alarm inputs
that are cleared in the normal sequence progression.
During the function test, all channels enter a
simulated alarm state for 3 seconds. All LEDs,
pushbuttons, relays, and the audible alarm will follow
the selected sequence as if the simulated alarm
inputs were real. After 3 seconds, the alarms may be
cleared as normal for the selected sequence.
Multiple Unit First-Out Indication
If multiple annunciators are connected for multiple unit
shared first-out indication (see page
10 ), only one
input from all connected devices will display as a first-
out alarm.
Each individual annunciator will acknowledge and
reset the channels on that unit using the pushbuttons
on that unit, and independent of all other connected
units. Only the unit displaying the first-out will sound
the audible alarm.
It is recommended that all connected units be set for
the same first-out sequence.
Shared Front Panel Buttons
To control all the units from any of the front panels,
connect the SIL, ACK, RST, and COM terminals on
each unit.
SIL RST ACK COM SIL RST ACK COM
UNIT 1
SIGNAL CONNECTOR
UNIT 2
SIGNAL CONNECTOR
Figure 15. Shared Pushbutton Connections