RKI Instruments Beacon 110 Rig Monitor - Manual (Page 12)

7 Beacon 110 Rig Monitor Operator’s Manual
Internal Description
This section describes the internal components of the Beacon 110 Rig Monitor
Power Converter
The power converter is located underneath the control PCB. It takes 12 VDC voltage supplied to
the Rig Monitor and converts it to 24 VDC which is used to run the Rig Monitor.
Main Printed Circuit Board (PCB)
The main PCB is mounted inside the housing. The main PCB includes the terminal strips, relays,
fuses, and power switch.
Terminal Strips
The Rig Monitor includes terminal strips for field and factory wiring connections. See “Wiring the
Beacon 110 Rig Monitor” on page 13 for detailed wiring procedures.
• 12 VDC In Terminal Strip. The 12 VDC In terminal strip is a 3-point terminal strip located in
the lower left corner of the main PCB. It facilitates wiring from a 12 VDC battery with the
factory supplied battery cable. Table 2 lists the function of each terminal.
• Alarm Terminal Strip. The 9-point alarm terminal strip is located along the bottom edge of
the main circuit board to the right of the DC In terminal strip (see Figure ). It facilitates wiring
external alarm devices (horn, strobe, etc.) to the alarm relay contacts and includes common
(C), normally closed (NC) and normally open (NO) terminals for fail, alarm 1, and alarm 2.
The factory installed strobe/horn is factory wired to the NO contact of the Alarm 1 relay and to
the (-) contact of the external DC terminal.
• Controller Terminal Strip. The 8-point controller terminal strip is located along the bottom
edge of the main circuit board to the right of the alarm terminal strip (see Figure ). The
controller terminal strip facilitates various internal and external wiring connections. Table 3
lists the function of each terminal.
Table 2: Terminal Assignments for the DC In Terminal Strip
Terminal Connects to:
12 VDC + Positive (white) wire from 12 V battery.
12 VDC - Negative (black) wire from 12 V battery.
Earth ground, factory wired
Table 3: Terminal Assignments for the Controller Terminal Strip
Terminal Connects to:
Alarm Buzzer + & - Factory installed buzzer (factory-wired)
Alarm Reset (2) Reset switch (factory-wired)
4 - 20 mA Output + + connection of 4 - 20 mA output
4 - 20 mA Output - - connection of 4 - 20 mA output
FACTORY WIRED (TB9) (right terminal) not used
FACTORY WIRED (TB9) (left terminal) - connection from 12 VDC strobe, factory wired