Beacon 110 Operator’s Manual 23
Alarm Indications
NOTE: The Beacon 110 includes alarm on and alarm off delay settings for alarm 1 and
alarm 2. The alarm indications described in this section operate according to
the factory set alarm settings. See Table 7 on page 28 for all the factory
settings.
NOTE: You can select normally energized (N. EN) or normally de-energized (N. DE-
EN) alarm 1 and alarm 2 relay settings in Configuration Mode. The following
sections describe the standard factory setting for these relays which is
N. DE-EN.
The fail relay is set as normally energized in the firmware and is not user-
adjustable.
Table 6: Visual and Audible Alarm Indications
Condition Cause Visual Indication(s)
Audible
Indication
Alarm 1
1
Increasing (decreasing for O
2
) gas read-
ing at or above the alarm 1 setpoint
• Alarm 1 LED is on
• Gas reading alternates with
ALARM-1 message
• If installed and set to
activate for alarm 1, strobe
flashes
• Pulsing tone
Alarm 2
1
Increasing gas reading at or above the
alarm 2 setpoint
• Alarm 2 LED is on
• Gas reading alternates with
ALARM-2 message
• If installed and set to
activate for alarm 2, strobe
flashes
• Pulsing tone
Fail • Disconnected or misconnected
detector head wiring
• Display reading at -10% of full scale
or lower
• Defective components
• Fail LED is on
• FAIL message replaces
gas reading
• If installed, strobe flashes
NOTE: There is a 30
second delay on the fail
indications.
• Steady tone
Low Power DC power source less than 18.5 volts. • Fail LED is on
• LowPower message and
actual voltage of incoming
DC power
• None
*
1
If the Beacon 110 is in both an alarm 1 and an alarm 2 condition, both alarm LEDs
are on and the display alternates between the gas reading and the ALMS 1&2 message.
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