Controls And Indicators; Circuits - Honeywell Fire-Lite Alarms MS-9050UD Manual

1.3 Controls and Indicators

LCD Display
The FACP uses an 80-character
(4 lines X 20 characters) high viewing angle
LCD display. The display includes a long life
LED backlight that remains illuminated. If AC
power is lost and the system is not in alarm, the
LED backlight will turn off to conserve batteries.
LED Indicators
LED indicators are provided to annunciate the following conditions:
• AC Power (green)
• Fire Alarm (red)
• Supervisory (yellow)
• Trouble (yellow)
• Alarm Silenced signals (yellow)
Key Panel
Mounted on the main circuit board, the key panel includes a window for the LCD display and LED
indicators as listed above. The key panel, which is visible with the cabinet door closed, has 25
keys, including a 16 key alpha-numeric pad similar to a telephone keypad.
Function keys:
• Acknowledge/Step
• Alarm Silenced
• Drill (Manual Evacuate)
• Reset (lamp test)
Service/program keys:
• Keys labeled 1 to 9
• * key
• # key
• 0 (recall) key
• 1st Event key
• Clear key
• Escape key
• Mode key
• Four cursor keys (up, down, left and right)
• Enter key
Local Piezo Sounder
A piezo sounder provides separate and distinct pulse rates for alarm, trouble and supervisory
conditions.

1.4 Circuits

SLC Communication Loop
One SLC loop is provided on the FACP main circuit board. The SLC loop, configurable for NFPA
Style 4, 6 or 7, provides communication to addressable detectors, monitor (initiating device) and
control (output device) modules. Refer to the SLC Wiring manual for information on wiring
devices.
Reference
Manual
MS-9050UD PN 52413:C 01/23/08
Product Description
SYSTEM ALL NORMAL
10:00A 092105
Figure 1.1 Membrane/Display Panel
15