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Chapter 1: Introduction
Item Control/Indicator
8
All Call Minus
10
Ready To Page
11
Paging Volume
System operation
The basic function of the VM-1 control panel is to monitor status changes in the
life safety system and to activate outputs according to the site-specific software.
Status change signals, also called events, are classified as follows:
•
Alarm (highest priority): Events that signal fire alarms or other life-threatening
emergencies
•
Supervisory: Events that signal off-normal conditions with sprinkler and
extinguishing systems and other equipment related to property safety
•
Trouble: Events that signal faults within the system
•
Monitor (lowest priority): Events that signal the operation of ancillary
equipment
During normal operation (no events), the VM-1 control panel displays the Normal
screen (see Figure 2 on page 4). When a point in the automatic fire detection
system signals a status change, the VM-1 control panel:
•
Posts the event message for the point that signaled the change into the
appropriate event message queue and displays the off-normal screen (see
Figure 3)
•
Turns on the corresponding system status LED
•
Turns on the panel buzzer to the pattern for the highest priority active event
•
Displays the most recent, highest priority event message (see Figure 3)
•
Activates common relays and programmed outputs
10
Description
Pressing the All Call Minus button broadcasts a live voice message
to areas that are not configured to receive evacuation or alert
signals. Pressing the button a second time exits the All Call Minus
mode. The LED turns on when the system is in All Call Minus mode.
LED flashes during a preannouncement tone and is steady when the
system is ready to page.
LED shows the audio level of the person speaking into the
microphone.
VM-1 User Guide
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