Reset Playing Files; Playing Files; System Pause; Supervision - Notifier AVL-1 Operation And Installation Manual

Reset Playing Files

Files of all priority levels may be reset. Files activated by a dry contact input may be reset by activating the reset dry contact input.
Files activated by a serial command may be reset by the serial reset command. Files which have been reset will stop playing
immediately and be removed from the queue. Dry contact activated files which have been reset must have their input released and
then reactivated to play again. Serial command activated files which have been reset must have another serial start command
transmitted to play again.
Any dry contact input may be selected to be the reset input. An input selected to be the reset input may not be used to activate
files to play or to be the acknowledge input. The reset input feature may be disabled by selecting input 0 to be the reset input. The
reset input selection is located in the SETUP procedure from the main menu.
NOTE: The reset switch must be located within a locked enclosure.

Playing Files

The AVL-1 stores message file activation's in a separate queue (see "queue" definition in glossary) for each output channel. Files
can be added to the queue by a contact activation or a serial port start command. Files in each queue are played in the order of file
priority. Equal priority files are played in the order of activation.
When a contact activation is detected, the programmed message file is placed on the programmed queue. The contact input is
then not checked for activation again until the message file completes playing. Therefore, a momentary contact closure will only
play a message file once and a maintained contact closure will continuously repeat a message file as long as its input is held
activated (unless it is interrupted by a higher priority file, played alternately with other equal priority files, acknowledged, or reset).
(See "acknowledge" definition in Glossary.)
When a valid serial port start command is received, the programmed message file is placed on the programmed queue. Each time
the file completes playing, the AVL-1 checks to see if a valid serial port stop command has been received. If one has been
received, the message file is removed from the queue. As long as the file is on the queue, it will repeat continuously (unless it is
interrupted by a higher priority file, played alternately with other equal priority files, acknowledged, or reset).

System Pause

The ability to have a pause between messages is provided. Having a pause between all playing messages prevents messages
from "running together" and then being misunderstood. The system pause may be any value from 1 to 999 seconds.

Supervision

A trouble condition indicates that the supervision functions have detected a malfunction in the AVL-1. When a trouble condition is
detected, the AVL-1 may not be able to receive and/or remember message requests from the control panel. The installer and/or
user must make sure that any message requests to the AVL-1 during a trouble condition are reactivated if necessary when the
AVL-1 returns to normal.
If a trouble condition is detected by any of the supervision functions, the AVL-1 Form C status relay (normally energized) will
change state, the green system normal LED will turn off, and the amber trouble LED will turn on. The status relay contact closure
must be properly connected to and used by the control panel to indicate a system trouble. At the same time, the amber trouble
LED will identify if: (1) The AVL-1 unit is inoperative (steady light) or (2) Troubleshooting is required (coded blinking light). If a
trouble condition is indicated, follow the procedures in the "Troubleshooting and Servicing" section.
WARNING: DO NOT LEAVE THE AVL-1 IN A TROUBLE CONDITION, AS IT MAY NOT PLAY WARNING MESSAGES
WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS. IF THE
AVL-1 INDICATES A TROUBLE CONDITION:
QUALIFIED SERVICE PERSONS IMMEDIATELY REPLACE UNIT(S) THAT HAVE MALFUNCTIONED.
WARNING: MESSAGES REQUESTED BEFORE AND DURING A TROUBLE CONDITION MAY NOT BE HEARD, WHICH
COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS. IF MESSAGES
REQUESTED BEFORE AND DURING A TROUBLE CONDITION ARE STILL NECESSARY, THEY SHOULD BE REPEATED
WHEN THE AVL-1 IS RETURNED TO NORMAL.
Input Voltage Supervision
Input voltage is supervised, and if the input voltage drops below the operating minimum voltage, the AVL-1 will stop operating and
indicate a trouble condition. The input voltage is also supervised for ground faults.
Program Memory Supervision
The AVL-1's program memory is supervised using sumcheck error techniques to detect any changes in EPROM data storage. If an
error is detected, the AVL-1 will stop operating and indicate a trouble condition.
AVL-1 Manual
Rev. H August 2000
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