Toa VX-2000SF - Page 79

Chapter 5: OPERATION
2. EMERGENCY BROADCASTS
5-7
Step 5. Once the fire has been brought
under control, the fire alarm system
automatically transmits a reset control
signal to the Control Input.
The Emergency broadcast mode
is terminated, and general-purpose
broadcasting is resumed, restoring the
original BGM output.
Step 4. Sincetherehasnotbeenextinguished,
a decision is made to press the re
button to call all zones for immediate
evacuation.
Pressing the button transmits a control
signal to the VX-2000, recalling
Emergency broadcast pattern 11 and
broadcasting the Evacuation message
(EV-2) to all zones.
Step 3. Three minutes after the Emergency
mode was activated, the fire alarm
system automatically transmits a control
signal to the Control Input, changing
the broadcast zones and messages.
Emergency broadcast patterns 1, 2, 8, 9,
and 10 are recalled, and the Evacuation
message (EV-2) is broadcast to 2F, 3F,
escalators, and staff area, while the
Alert message (EV-1) is broadcast to
GF and 1F to provide warning of the
detected fire.
General-purpose
broadcast restored.
Evacuation
Evacuation
Evacuation
Evacuation
GF
1F
2F
3FBGM
BGM
BGM
BGM
No
broadcasting
zone
Broadcasts
to all zones
GF
1F
2F
3F
[EV-1] [EV-2]
The fire button is pressed to
transmit a control signal.
Reset signal received from
the fire alarm system.
Control signal received
from the fire alarm system
GF
1F
2F
3FEvacuation
Evacuation
Alert
Alert
Alert
message
(1F, GF)
Evacuation
message
(2F, 3F,
Escalators,
Staff area)