Chore-Tronics® 3 Control Control Installation
MT2398C
107
Expansion Board Installation/Wiring
If it is desired to have more than 12 analog inputs and/or 8 digital inputs, then an Expansion Board(s) is
needed to connect the inputs. There can be a maximum of 7 Expansion Boards added to the Chore-
Tronics
®
3 Main Box. These seven boards can consist of Analog Expansion Board, Digital Expansion
Boards, or both.
To add an Expansion Board, an Expansion Bus (I2C board) kit part no. 49667 must first be installed.
Attach the
Expansion Bus to the Back Plate using the hardware provided using existing holes as shown
in Figure 35 below. Slide an Expansion Board into one of the Expansion Bus connectors. Attach the
Expansion Board to the Back Plate using the hardware provided. Connect the Expansion Bus to the I/O
Board with the Flat Cable provided as shown. Note: Remove the I/O Board and run the Flat Cable
underneath it to keep it out of the way as shown.
Item Description
1 Expansion Bus
2 Flat Cable End (I/O Board End)
3 Flat Cable End (Expansion Bus end)
4 Expansion Board
Figure 35. Expansion Boards
4
1
3
2
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