IMPULSE®•G+/VG+ Series 4 Digital Input Installation Manual - August 2011
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4. Option Components
Digital Input DI-A3 Option
<1> The ground wires provided in the option shipping package must be connected during installation.
Figure 1: Digital Input DI-A3 Option
Terminal Blocks TB1, TB2, and TB3
Figure 2: Terminal Blocks TB1, TB2, and TB3
Refer to Table 3 on page 20 for details on TB1, TB2, and TB3 terminal functions and signal levels.