32
SIGNAL
IN –
POWER +12V
FLOW SWITCH
Contact Closure:
Polarity not critical
Reed Switch
FLOW METER
Polarity not Critical
Hall Effect
FLOW METER
TBDI
I/O Board wiring labels
I/O Boards 1 through 4
I/O Board 1-4
Terminal Blocks
I/O Board P/N
Identification Labels
1
2
3
4
5
6
7
8
9
10
11
12
D1+
D1–
D2+
D2–
12V
D3+
D3–
D4+
D4–
12V
D5+
D5–
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
D6+
D6–
12V
D7+
D7–
D8+
D8–
12V
D9+
D9–
D10+
D10–
12V
D11+
D11–
D12+
D12–
12V
Figure 17 Digital Input Wiring