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8. I/O Termination Board
The eCNA-10 uses the House/Aux termination board. This board is available in two form factors, the
39431 and the 39445. These two boards are functionally equivalent. The 39445 board was designed
to be mounted inside the eCNA-10 control cabinet. The boards are powered and controlled by the
eCNA-10 main control board via the Local I/O Network (LIN). This is where all digital inputs and
outputs are terminated in the field.
Features
• 22 low power relay outputs with LED indicators
• 2 high power relay outputs with LED indicators
• 8 optically isolated inputs
• Expansion socket for the 39436 Aux I/O board
• 12 volt DC power
• Manual override headers
8.1 39445 House/Aux Termination Board
1) LSN - TB1 (1-3) and P1 are the Local Sync Network connections. This is a tie point only.
Note: The LSN is not used on the eCNA-10.
2) LIN - TB1 (4-8), P2 and P3 are the LIN connections. This is the serial data and power
connections from the main control board.
3) Power LED - This indicates the status of the regulated +12 volt DC power.
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eCNA-10 Operation and Installation Manual Version 1.270-00
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