Campbell AM16/32B, Руководство по эксплуатации продукта

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AM16/32B Relay Multiplexer 13
7.1 Wiring to data logger
Removable terminal strips allow wiring to remain intact while the multiplexer is used elsewhere.
The green terminal strips are easily removed; no tools are required. Replacement terminal strips
may be purchased from Campbell Scientific.
7.1.1 Control terminals
Table 7-1 shows control connections to Campbell Scientific data loggers.
Table 7-1. Control terminal function and data logger connection
Control terminal Function Data logger connection terminal
12V Power 12V
G Power ground G (power ground)
CLK Clock
C (control port), U (universal) terminal
configured for control
RES Reset C, U terminal configured for control
7.1.2 COM terminals
The four terminals dedicated to multiplexer-data-logger connection are located under the blue
COM label next to the mode switch. The terminals are labeled: ODD H/L and EVEN H/L. In 4x16
mode, the AM16/32B maintains the four COM terminals electrically isolated from one another. In
2x32 mode, the AM16/32B maintains an internal connection between ODD H and EVEN H and
between ODD L and EVEN L. How the COM terminals connect to data logger terminals
determines the function of the measurement terminals. For proper function, these terminals must
be wired according to the measurement instructions in the CRBasic program. See Operation
(p. 15) for details and Example measurements and programs (p. 21) for examples.
Common terminals are provided next to the COM ODD and COM EVEN terminals. They
connect internally to the other thirty-two terminals on the AM16/32B and are connected at all
times (not switched). Their function is to provide a path to ground for sensor cable shields. A
COM terminal should be wired to data logger ground ( ⏚ ) as shown in FIGURE 7-1 .