RKI Instruments Beacon 200 RIg Monitor, H2S/H2S - Manual (Page 15)

Beacon 200 Rig Monitor Operator’s Manual • 10
Main PCB
The main PCB is mounted inside the housing. The power supply mounting
plate is mounted to the main PCB with four standoffs and the display PCB
is mounted to the power supply mounting plate with four standoffs. The
main PCB includes the terminal strips, relays, fuses, and power switch.
Terminal Strips
The Rig Monitor includes four terminal strips for external wiring
connections. See “Wiring the Beacon 200 Rig Monitor” on page 16 for
detailed wiring procedures.
• Detector/Transmitter Terminal Strips. Two detector/transmitter
terminal strips are located near the bottom left corner of the main circuit
board (see Figure 1). These two 9-point terminal strips facilitate wiring
connections to the detectors. Only one detector head at a time may be
wired per channel. The top terminal strip is for channel 1 and the bottom
terminal strip is for channel 2. The H
2
S detectors are factory wired to
these terminal strips.
• Alarm Terminal Strip. The alarm terminal strip is located along the
bottom edge of the main circuit board (see Figure 1). This 21-point
terminal strips facilitates wiring connections to external alarm devices
(horn, strobe, etc.). Terminals are provided for individual channels as
well as common alarm relay contacts. The horn/strobe is factory wired
to this terminal strip.
• Controller Terminal Strip. The 10-point controller terminal strip is near
the lower right edge of the main circuit board (see Figure 1). The
controller terminal strip facilitates various internal and external wiring
connections. Table 3 lists the function of each terminal.
Table 3: Terminal Assignments for the Controller Terminal Strip
Terminal Connects to:
FACTORY WIRED (top terminal) - connection from 12 VDC strobe, factory wired
FACTORY WIRED (bottom terminal) not used
+ CH1 OUT + connection of 4 - 20 mA output, channel 1
- CH 1 OUT - connection of 4 - 20 mA output, channel 1
+ CH2 OUT + connection of 4 - 20 mA output, channel 2
- CH2 OUT - connection of 4 - 20 mA output, channel 2
RESET (2) Reset switch (factory-wired)
BUZ-/BUZ+ Internal buzzer (factory-wired)