Page 8 - Industrial Technology EXTRA 22nd February 2021

the VX25 add-on unit series to keep electrical and profile in the AX, as well as the mounting rail and
pneumatic components separate from each other. system chassis, they can be mounted there easily
Think of rail systems, mounting profiles, system and quickly. The plastic cable hose makes it easy to
chassis and mounting rails. establish a reliable connection with flexible current
Non-electrical parts and appliances that do not conductors. This also fulfills the requirement that
belong directly to the electrical equipment cannot “sufficient mechanical strength must be provided,
simply be placed within the housing containing the without compromising proper functioning”.
switchgear. Solenoid valves must therefore be kept
separate from other electrical components by Cable entry and protection class
placing them in a separate compartment made with In addition to cable routing, the cable entry into a
rail systems. System chassis, which are used in the switch and control panel is also important.
door of the VX25 to make optimal use of cabinet Maintaining the IP protection class is paramount.
space, can sometimes also be used for the AX wall The IP value says something about how well a
and floor cabinet series. The same applies to cabinet can keep out threats such as dust and
different mounting profiles. water. The latest standard does not allow openings
in the enclosure (such as those for the passage of
Cable routing at moving parts cables) to impair the degree of protection.
The IEC standard states that: “connections to At the same time, openings for on-site cable
appliances mounted on doors or other moving parts entry must be easy to open again. The VX25 wall
are made using flexible current conductors (…), cabinet has sliding metal bottom plates, which
allowing regular movement of the part.” Pipes must create an opening for cables. Additional provisions
be secured to the fixed and moving part. are therefore required for correct and safe cable
Because cable hose holders have the same hole entry. An elastic clamping profile seals the opening.
pattern as the cabinet frame of the VX25, the door This creates a flexible cable entry that guarantees

Simple
◾ Digital configuration
◾ Consistent data quality
◾ Intelligent engineering