RKI Instruments 12 VDC Beacon 200 - Manual (Page 28)

24 • 12 VDC Beacon 200 Operator’s Manual
NOTE: You can select normally energized (NE) or normally de-energized
(NDE) channel relay settings in the Channel Control & Setup
menu. The following sections describe the default setting for the
channel relays which is NDE.
Common alarm 1 and alarm 2 relays are factory-set as NDE, and
the common fail relay is factory set as NE. The common relays’
NE/NDE settings are not user-adjustable.
Alarm 1 Condition
This section describes the audible and visual indications for an alarm 1
condition and suggests response to an alarm 1 condition.
Alarm 1 Condition Indications
When the gas reading of an active channel reaches the alarm 1 setpoint,
the 12 VDC Beacon 200 senses an alarm 1 condition. The 12 VDC Beacon
200 alerts you to an alarm 1 condition as follows:
• The ALARM 1 light turns on.
• The gas reading in alarm 1 condition flashes and alternates with the
ALARM-1 message.
• The buzzer sounds a Pulsing tone.
• The common alarm 1 relay energizes.
• The applicable alarm 1 channel relay energizes.
Responding to an Alarm 1 Condition
This section suggests response to an alarm 1 condition.
1. Follow your established procedure for a low level combustible or toxic
gas condition or a decreasing oxygen content condition.
2. Oxygen alarms are self-resetting and will automatically clear when the
oxygen rises above the alarm 1 setpoint.
3. Alarms for all other gas types are latching. After the gas reading falls
below the alarm 1 setpoint, press the reset switch to reset the alarm 1
circuit. Resetting the alarm 1 circuit silences the buzzer, turns off the
ALARM 1 light, resets the channel display, and de-energizes the
common and channel alarm 1 relays.