Fire-Lite Alarms MS-9200 Technical Manual page 63

Figure 4.1: The MS-9200 Membrane Switch Panel Figure 4.1: The MS-9200 Membrane Switch Panel
Figure 4.1: The MS-9200 Membrane Switch Panel Figure 4.1: The MS-9200 Membrane Switch Panel Figure 4.1: The MS-9200 Membrane Switch Panel
4.0 4.0 Control Switches Control Switches
4.0 4.0 4.0 Control Switches Control Switches Control Switches
ACKNOWLEDGE/STEP ACKNOWLEDGE/STEP ACKNOWLEDGE/STEP
ACKNOWLEDGE/STEP ACKNOWLEDGE/STEP
The Acknowledge/Step key silences the piezo sounder and changes all flashing LEDs to steady. Only one
press is necessary regardless of the number of new alarms, troubles or supervisory signals. When the
piezo is silenced, an 'ACKNOWLEDGE' message is sent to the printer and the history file. Multiple active
events are scrolled on the display at a three second rate.
ACKNOWLEDGE also automatically sends a 'SILENCE PIEZO' command to the LCD-40, AFM and LDM
annunciators.
When more than one event exists, the first press of the Acknowledge/Step switch silences the piezo and
changes all flashing LEDs to steady. The second press of the switch stops the scrolling and holds the
event on the display for 1 minute. Subsequent pressing of the switch 'steps' through each active event.
ALARM SILENCE ALARM SILENCE
ALARM SILENCE ALARM SILENCE ALARM SILENCE
The Alarm Silence switch performs the same functions as ACKNOWLEDGE/STEP. In addition, if an alarm
exists, it turns off all silenceable circuits and causes the ALARM SILENCE LED to turn on. It also sends an
'ALARM SILENCED' message to the printer, the history file and the LCD-40. A subsequent new alarm will
resound the system.
DRILL HOLD 2 SEC DRILL HOLD 2 SEC DRILL HOLD 2 SEC
DRILL HOLD 2 SEC DRILL HOLD 2 SEC
When the DRILL switch is held for two seconds (time required to prevent accidental activations), the MS-
9200 turns on both main panel NAC outputs and all silenceable circuits (all control modules/Notification
Appliance circuits that are programmed silenceable) and turns off the ALARM SILENCE LED. The 'MANUAL
EVACUATE' message is shown on the LCD display. The same message is sent to the printer and history
file. The Silence key operates on silenceable NAC outputs only.
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Rev. B1 7/28/97 P/N 50428:B1 63