RKI Instruments Beacon 200 - Manual (Page 21)

Wiring the Beacon 200 Gas Monitor • 21
CAUTION: When a battery is used as backup power, the Beacon 200
trickle charges the battery. Do not use a non-rechargeable
battery as backup power. Use RKI backup battery 49-8102RK
or an appropriately rated rechargeable lead acid type battery.
5. Connect the DC wires to the controller terminal strip as shown in
Figure 7.
NOTE: If a 24 VDC battery is used as a backup power source, as long as
AC power is on the Beacon 200 will keep a trickle charge on the
battery to maintain its charge. If AC power is interrupted, the
Beacon 200 will operate from the DC backup battery until the
battery voltage drops to 21.5 volts or less, or until AC power is
restored. Battery recharge time will vary depending on how much
the battery was drained.
Connecting External Alarms
Perform the following procedure to connect external alarm devices to the
Beacon 200.
NOTE: The alarm terminal strip includes terminals for channel alarms
and common alarms. Channel alarms are activated by one
particular channel. Common alarms are activated by either of the
two channels.The example used in this procedure describes
connecting an external alarm device to one of the channel alarm
terminals: the channel 1, alarm 1 terminals.
1. Turn off or unplug all incoming power to the Beacon 200 at the power
source end.
2. Open the housing door, then place the power switch in the OFF
position.Locate the alarm terminal strip (see Figure 1).
3. Install an appropriately rated cable bushing or conduit in an unused
conduit hub on the bottom of the Beacon 200 housing.
24 VDC ± 2.5 VDC
+
BAT
BAT +
Controller Terminal Strip
Figure 7. DC Power Wiring