RKI Instruments Beacon 410 - Manual (Page 30)

26 • Alarm Indications Beacon 410 Gas Monitor Operator’s Manual
The battery charging circuit is designed to charge lead acid type batteries. If AC power is
used as primary power and a backup battery is connected to the Beacon 410 ‘s EXT DC/
24V BATT terminals as shown in Figure 10 on page 18, the battery charging feature will
charge the battery if it is depleted and keep it charged with a charge current of
approximately 100 mA.
CAUTION: When a battery is used as backup power and the charging feature is included in the
Beacon 410, do not use a non-rechargeable battery or a backup battery that has it’s
own charging feature. Use RKI backup battery 49-8104RK or an appropriately rated
24 VDC rechargeable lead acid type battery to backup a Beacon 410 when the battery
charging feature is included in the Beacon 410.
Alarm Indications
This section describes the Beacon 410 in alarm 1, alarm 2, alarm 3 and fail conditions,
and suggests responses to these conditions. Table 5 below lists the alarm indications for
each condition.
NOTE: The Beacon 410 allows configuration of various alarm and alarm relay
parameters. The description of alarm indications below assumes that all
parameters are at their factory set value. It also assumes that the alarm setpoints
are set such that alarm 1< alarm 2 < alarm 3 and all alarms are increasing except
for an oxygen channel where alarm 1>alarm 3 and alarm 2 > alarm 3 because
alarm 1 and alarm 3 are decreasing alarms and alarm 2 is an increasing alarm.
See “Viewing and Changing Channel Parameters” on page 35 for detailed
information on displaying or changing various channel parameters including
alarm and alarm relay parameters. Table 7 on page 37 lists the adjustable
parameters and their factory settings.
Table 5: Visual and Audible Alarm Indications
Condition Cause Visual Indication(s)
Audible
Indication
Alarm 1 Increasing (decreasing for O
2
) gas
reading 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 Increasing gas reading at or above
the alarm 2 setpoint • Alarm 1 and alarm 2 LEDs
(alarm 2 only for oxygen) are on
• Gas reading alternates with
ALM 1,2 message (ALARM-2
for oxygen)
• If installed, strobe continues to
flash if set to activate for alarm 1.
If set to activate for alarm 2 only
or if channel in alarm is an
oxygen channel, it begins to
flash when an alarm 2 condition
begins.
Pulsing
Tone