User guide

AN24 & AN28 Annunciators Instruction Manual
19
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 alarm states.
This pushbutton may be disabled (see page 27).
ACK (Acknowledge)
Acknowledges alarmed channels. See selected alarm type details for
complete function description (see page 31).
RESET
Resets all acknowledged channels. This button is not used on ISA
sequences A, F1A, and F2A, which reset acknowledged channels
automatically. See selected alarm type details for complete function
description (see page 31).
LED TEST (SILENCE & ACK)
Press and release the SILENCE and ACK pushbuttons to flash the
channel indicator LEDs for a lamp test.
SILENCE ACK RESET
POWER