www.redbackaudio.com.auRedback® Proudly Made In Australia4
Redback® A 4574A Alert/Evac/Chime Tone Generator
5.0 Alert, Evac and Bell switches
The Alert, Evac and Bell switches on the front of the unit all work in momentary mode. ie. The alert tone will continue to
sound after the alert switch is momentarily pressed and the evac tone will continue to sound after the evac switch is mo-
mentarily pressed. Note: There is no automatic alert to evac switch-over option associated with the front panel switches.
Note 1: The tone that is being sounded (ie alert, evac, bell) will be indicated by the illumination of the relevant front panel
indicator.
Note 2: To cancel a tone either use the remote cancel contacts or the front cancel button. Note the cancel button will need
to be depressed for 2 seconds. This is to prevent accidental cancelling of a tone.
The Alert, Evac and Bell tones are stored on the supplied SD card. Separate folders are supplied on the SD card for each tone.
It is up to the user to provide the MP3 les (they must be in MP3 format) for each of the tones. A library of sample MP3 les
is supplied (in the #LIBRARY# folder). See section 11.0 for more details.
NOTE: The Fault LED will ash if any of the folders on the SD card are left empty. I.e. the Alert, Evac or Bell must all have an
MP3 le inside.
Once these Alert, Evac and Bell outputs are activated, the corresponding 24V switched outputs will become active (refer to
section 8.0 for more details).
6.0 Remote Contacts (Rear of unit)
Provision has been made for four remote contacts on the back of the unit. These are all activated by closing the correspond-
ing contact (connecting the terminals together).
The alert, evac, bell and cancel remote contacts can be triggered with any sort of closing contact such as a timer to trigger
the bell, a remote switch or optional A 2078B and A 2081 remote wall plates (se section 12.0 for A 2078B and A 2081
wiring details).
Alert contact: These contacts are for remote triggering of the alert tone ie: for use with Fire Indicator Boards, break glass
alarms etc. These contacts can be set to either continuous or momentary operation via dip switch 1. ( refer to secton 7.0).
In continuous mode the alert tone will continue while the alert contact is triggered.
In momentary mode the alert tone will continue to sound after a momentary trigger of the alert contact.
Evac Contact: These contacts are for remote triggering of the evac tone. Connecting these terminals together will activate
the evac tone. These contacts can be set to either continuous or momentary operation via dip switch1. ( refer to secton 7.0).
In continuous mode the evacuation tone will continue while the evac contact is triggered.
In momentary mode the evacuation tone will continue to sound after a momentary trigger of the evac contact.
Bell Chime Contacts: These contacts are for remote triggering of the bell chime sound. This bell chime can be used for
signalling lunch breaks, start of classes, and can be triggered from a time clock or similar device.
Cancel contact: These contacts are for remote cancelling of the alert or evac tones.
7.0 Dip Switch Settings
The A 4574A has various options which are set by the DIP switches on the rear of the unit which are outlined below.
Switch 1: The Alert and Evac contacts can be set to either continuous or momentary operation.
In continuous mode the alert/evac tone will continue while the corresponding rear contact is triggered.
In momentary mode the alert/evac tone will continue to sound after a momentary trigger of the rear contact.
1 - OFF: continuous operation of alert/evac contacts
1 - ON: momentary operation of alert/evac contacts
Switch 2: This switch is used to either loop the Bell, or play the Bell only once after it has
been triggered.
2 - OFF: Bell MP3 will play once
2 - ON: Bell MP3 loops
Switches 5 - 8 Evacuation Timer Settings:
These switches control the time period before the unit switches from the alert, to the evac
tone when the Alert is triggered by the rear contact. This time period can be switched from
30s to 7.5 minutes in 30s increments. Factory preset is 30s.
Note: Setting all switches 5 - 8 to OFF deactivates the switchover function.
IMPORTANT NOTE:
Ensure power is switched off when adjusting DIP switches.
New settings will be effective when power is switched back on.
5 6 7 8
