Chapter 4 Precautions
4.1 Wiring Precautions
4.1.1 Drag Chain Wiring
1. When releasing the 4-pin cable from the coil, it is necessary to prevent the cable from
twisting (the cable must be released along the tangential direction) and the cable must be
laid straight. This work should be done before laying the cables, to give the cables time
for stress relief. Because the manufacturing process cannot completely guarantee that
the cable is straight and free of distortion, the printed logo on the surface of the cable
rotates in a tiny spiral.
2. Cables are not allowed to be twisted when installed in a closed space, and twisting
during installation may cause damage to the core wire stranding. This effect is gradually
strengthened during the operation of the cable, resulting in back-twisting, which
eventually leads to the breakage of the core wire and failure.
3. The cables must be laid loosely next to each other in the drag chain support. Spacers
should be used to separate the cables as much as possible. The space between the cable
and the spacer, separator and the cable adjacent to it, shall be at least 10% of the
diameter.
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