There are a wide range of control cables on the market, however this site will only discuss three types that are used in the field of process automation. This involves using computer technology and software engineering to assist with power plants and factories efficiently and safely.
These three control cables are: CY Cables, SY Cables and YY Cables which are also referred to as flexible instrumentation cables. They are designed for use as interconnecting cable in control and signal equipment for measuring, control and regulation.
These cables are referred to by various names including;
Instrumentation cable, robotic cable, motor cable, multi-core cable and control flex which describes all three. To confuse things a little further you may also hear these cables referred to as; Screened Flexible Cable (CY), Shielded Flex (SY) and Unscreened or Unshielded Control Cable (YY).
The main differences between the three cables are:
CY Cables – are used in environments when interference-free transmission is needed. CY Cables have a multi-core flex, tinned copper wire braid and a PETP separator. All these components work together to protect the cable from external electromagnetic influences and mechanical stress.
SY Cables – the galvanised steel wire braid makes this cable ultra strong and it is in fact the strongest out of the three control cables mentioned here. It also offers reliable mechanical protection.
YY Cables – this cable work well with light mechanical stress and is suited to most environments. It is a very versatile cable and can be used outside when protected and also works well in dry and moist conditions inside.