Beckhoff EL47 Series, Documentation

Page: 31 / 178

Mounting and wiring
EL47xx 31 Version: 2.7
Terminal housing High Density Housing
Wire size width (conductors with a wire end sleeve) 0.14 ... 0.75 mm
2
Wire size width (single core wires) 0.08 ... 1.5 mm
2
Wire size width (fine-wire conductors) 0.25 ... 1.5 mm
2
Wire size width (ultrasonically “bonded" conductors)
only 1.5 mm
2
(see notice [
}
30] !)
Wire stripping length 8 ... 9 mm
Shielding
Shielding
Analog sensors and actors should always be connected with shielded, twisted paired wires.
4.5 Installation positions
NOTE
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.