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4.2.2 Wiring Procedure
IMPORTANT
For the detector whose cables are already wired at the time of shipment, the following
wiring procedure is not needed. Therefore, do not open the terminal housing cover.
Signal Cable Termination
Use a signal cable specified in Table 4.3 and follow the procedure below referring to
Figure 4.6.
(1) Strip the cable sheath about 40 mm to expose two shielded wires.
(2) Unravel the shield screen at the base of each shielded wire to have an opening large
enough to extract the internal wire. Then extract the black wire and white wire
through its opening at the base of each shielded wire.
(3) Put the two shield screens (internal wires are already extracted) together into one
shield wire and put it through a heat-shrink tube. The heat-shrink tube should be heated later
when instructed to protect the shield screen from touching other wires causing a short
circuit.
(4) Strip each end of wire (except the shield wire) about 5 mm to expose stranded copper
wire and attach an M4-size ring lug terminal on each end of wire. The lug terminal
should have an insulating sleeve and the lug terminal should be pressed firmly onto the end
of each wire with a compression tool.
(5) Put the heat-shrink tube of the shield wire in place as shown in Figure 4.6 and heat it
with radiated heat
using a soldering iron etc.
Figure 4.6 Termination of signal cable
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