Spectrasensors SS2000 - Figure 2-5: Mating Terminal Block for Connecting Signal Cables

SS2000 Operator’s Manual
H
2
S in Natural Gas 2–11
3. Pull the customer-supplied cable for the current loop, the
SpectraSensors external serial cable (included in the shipping box),
and up to five optional digital inputs/outputs through the conduit
into the control box.
4. Strip back the jacket and insulation of the cables just enough to
connect the current loop, the SpectraSensors external serial cable
and the validation request cable to the mating terminal block, shown
in Figure 2–5. The mating terminal block can be pulled up and
removed from its base to make the cable connection process easier.
5. Connect the 4-20 mA current loop signal wires to the appropriate
terminals, as indicated in Table 2–1.
6. Connect the serial cable wires to the appropriate terminals according
to Table 2–1. Note that there is a single ground connection for serial
cables (pin-3). For reference, Table 2–1 also shows the
corresponding pin numbers for configuring a nine-pin Sub-D
connector for connection to a computer serial port.
7. For systems with the optional validation request feature, connect the
signal and ground wires to the appropriate terminals as indicated in
Tab l e 2 – 1 .
1
2
3
4
56
78
9
10 11
12
Figure 2–5 Mating terminal block for connecting
signal cables.