LED Indicators
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Document #51003 Rev.E 01/11/02 P/N 51003:E
4.2 LED Indicators
The six LED indicators on the front panel operate as follows:
AC Power
This is a green LED which illuminates if 120 VAC power is applied to the MS-9200(C) or 240 VAC power is applied
to the MS-9200E.
Fire Alarm
This is a red LED that flashes when one or more alarms occur. It illuminates steady when the Acknowledge/Step or
Alarm Silence key is pressed. The Alarm LED turns off when the System Reset key is pressed.
Supervisory
This is a yellow LED that flashes when one or more supervisory conditions occur, such as a sprinkler valve tamper
condition. It illuminates steady when the Acknowledge/Step or Alarm Silence key is pressed. It turns off when
System Reset is pressed.
Alarm Silence
This is a yellow LED that turns on after the Alarm Silence key is pressed (preceded by a fire alarm condition). It
turns off when the Drill or System Reset key is pressed.
System Trouble
This is a yellow LED that flashes when one or more trouble conditions occur. It stays on steady when the Acknowl-
edge/Step or Alarm Silence key is pressed. The LED turns off when all trouble conditions are cleared. This LED
will also illuminate if the microprocessor watchdog circuit is activated.
4.3 Normal Operation
With no alarms or troubles in the system, the display message is 'Systems All Normal' along with the current time and
date as shown below. To set the time and date, see “Set Time and Date” on page 50.
The MS-9200 performs the following functions at regular intervals while in normal mode:
✓ Polls all devices on SLC loop. Checks for valid reply, alarms, troubles, etc.
✓
Monitors AC input voltage and battery capacity
✓
Refreshes LCD display and updates time
✓
Scans keyboard
✓
Performs detector auto test
✓
Tests memory
✓
Update/Reads EIA-485 communications bus
SYSTEMS ALL NORMAL
10:00A MON 01/08/01
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