Shielding; Installation Positions - Beckhoff EL28 Series Documentation

Mounting and wiring
See the following table for the suitable wire size width.
Terminal housing
Wire size width (single core wires)
Wire size width (fine-wire conductors)
Wire size width (conductors with a wire end sleeve)
Wire stripping length
High Density Terminals (HD Terminals [} 68]) with 16 terminal points
The conductors of the HD Terminals are connected without tools for single-wire conductors using the direct
plug-in technique, i.e. after stripping the wire is simply plugged into the terminal point. The cables are
released, as usual, using the contact release with the aid of a screwdriver. See the following table for the
suitable wire size width.
Terminal housing
Wire size width (single core wires)
Wire size width (fine-wire conductors)
Wire size width (conductors with a wire end sleeve)
Wire size width (ultrasonically "bonded" conductors) only 1.5 mm
Wire stripping length
4.4.3

Shielding

Shielding
Encoder, analog sensors and actors should always be connected with shielded, twisted paired
wires.
4.5

Installation positions

Constraints regarding installation position and operating temperature range
Please refer to the technical data for a terminal to ascertain whether any restrictions regarding the installa-
tion position and/or the operating temperature range have been specified. When installing high power dissi-
pation terminals ensure that an adequate spacing is maintained between other components above and be-
low the terminal in order to guarantee adequate ventilation!
Optimum installation position (standard)
The optimum installation position requires the mounting rail to be installed horizontally and the connection
surfaces of the EL/KL terminals to face forward (see Fig. "Recommended distances for standard installation
position"). The terminals are ventilated from below, which enables optimum cooling of the electronics through
convection. "From below" is relative to the acceleration of gravity.
70
ELxxxx, KLxxxx
0.08 ... 2.5 mm
0.08 ... 2.5 mm
0.14 ... 1.5 mm
8 ... 9 mm
High Density Housing
0.08 ... 1.5 mm
0.25 ... 1.5 mm
0.14 ... 0.75 mm
2
8 ... 9 mm
NOTE
Version: 2.2
ESxxxx, KSxxxx
2
0.08 ... 2.5 mm
2
0,08 ... 2.5 mm
2
0.14 ... 1.5 mm
9 ... 10 mm
2
2
2
EL28xx-xxxx
2
2
2