RKI Instruments Beacon 800 - Manual (Page 39)

Beacon 800 Gas Monitor Operator’s Manual Heavy Duty Relay Board • 36
Heavy Duty Relay Board
Figure 15: Beacon 800 with Heavy Duty Relay Board
Description
When installed, the heavy duty relay board is located below the display board. The
terminals are not accessible unless the display board, which is hinged on its left side, is
swung open. If the heavy duty relay board is installed with a recorder output board, it is
located below the display board and above the recorder output board (see Figure 12). The
heavy duty relay board connects to the main board with two cables. One 34 position
ribbon cable runs from the connector labelled J1 in the upper left of the heavy duty relay
board to the analog front panel/power relay connector on the left side of the main board
J1
Heavy Duty Relay Terminal Strip, 4X
Energized Relay Indication LED, 4X
Heavy Duty Relay Board
TB5
TB3
NOTE: Display Board Not Shown