Toa FS-970 SERIES - Manual (Page 44)

44
12.4. Connections to the Automatic Fire Alarm Systems
By connecting the emergency PA system to an automatic fire alarm system, voice alarms can be
automatically provided as soon as the PA system receives a fire signal from a fire detector. It must be seen to
that the floor signal lines (EL) are connected to the junction panel terminals of their corresponding floors.
Because fire confirmation signals (EF) are also important to automatic broadcast, connect their cables
properly.
When sounding a zone sound device ("zone bell" herein) simultaneously with the activation of the automatic
fire alarm system, connect the zone bell stop signal (EB1) lines to both the fire alarm system and PA system
in order to stop the zone bell during voice alarm broadcast (except the second signal) or microphone
announcement. Also, when using emergency guidance panels of the type that sounds a guidance tone,
connect the EB terminal (EB2) so that the guidance tone is disabled during voice alarm broadcast or
microphone announcement.
Only the floor signal lines are connected to the Expansion Junction Panel JP-039.
Notes
• Each contact of the automatic fire alarm system must be a no-voltage make contact with a contact capacity
of 30 VDC/200 mA or more.
• EB1 and EB2 are independent contacts and are exactly the same in operation timing.
• The line resistance of wiring between automatic fire alarm system and amplifier must be less than 50
Ω.
EF
confirmation
Guidance panel with
guidance tone device,
etc.
EC EL1 EL2 EL3 EL4 EL5 EL6 EL7 EL8 EL9 EL10 EF EB EB
Automatic fire alarm system
Fire floor signal Fire confirmation
signal
Zone bell stop
JP-0410 front panel
EB1 EB2
EL (automatic fire alarm system)