10
Document 50400 Rev B 10/27/97 P/N 50400:B
LED Indicators and Piezo Sounder
The LED-10 Series annunciators provide LEDs which indicate the system and zone
status of its associated MS-5210UD fire alarm control panel.
AC
Power
This is a green LED which illuminates if AC power is
applied to the host FACP. The green LED will turn
off if AC power to the host FACP is lost.
Alarm
This is a red LED that flashes (1 second on, 1
second off) when one or more fire alarms occur. The
piezo sounder turns on steady for alarm. The LED
illuminates steadily and the piezo silences when an
Acknowledge or Silence switch is pressed. The
Alarm LED turns off when the Reset switch is
pressed after the alarm condition has been cleared.
Trouble
This is a yellow LED that flashes (1 second on, 1
second off) when one or more trouble conditions
occur. The piezo sounder pulses (1 second on, 1
second off). The LED turns on steady and the piezo
silences when an Acknowledge or Silence switch is
pressed. The LED turns off when all trouble conditions are cleared. This LED will
also illuminate if the microprocessor watchdog circuit within the annunciator is
activated.
Supervisory
This is a yellow LED that flashes (½ second on, ½
second off) when one or more supervisory conditions
occur, such as a sprinkler valve tamper condition.
The piezo sounder pulses (½ second on, ½ second
off). The LED illuminates steadily and the piezo silences when an Acknowledge or
Silence switch is pressed. The Supervisory LED turns off when a Reset switch is
pressed after clearing the supervisory condition.
LED-10 and LED-10L Only
Zone Alarm - Zones 1 through 10
This is a red LED that flashes when a fire alarm,
supervisory alarm or process monitoring alarm
occurs on the corresponding zone. The LED flashes
at a 1 second on/1 second off rate for a fire alarm
condition, a ½ second on/½ second off rate for a supervisory alarm and a ¼ second
on/¼ second off rate for a process monitoring alarm. The piezo sounder will pulse
at a rate corresponding to the flashing LED. The LED illuminates steadily and the
piezo silences when an Acknowledge or Silence switch is pressed. The LED turns
off when the fire alarm, process monitoring alarm or supervisory alarm is cleared on
the corresponding zone and the Reset switch is pressed.
Note: Be certain to use customized slide-in label to identify the zone function, since
the red LED will flash for a variety of conditions as programmed in the FACP. Refer
to the MS-5210UD Manual P/N 50193 for details.
Summary of Contents for LED-10 series
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