Wiring
Operating Manual PSSu E S 2AI I se(-T)
21417-EN-04
29
6
Wiring
6.1
General wiring guidelines
Please note:
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The supply voltages for actuators and sensors must be extra low voltages with protect-
ive electrical separation (PELV or SELV) in accordance with VDE 0100, Part 410. Fail-
ure to do so could result in electric shock.
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We recommend that you use shielded signal lines.
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On base modules with C-rail:
– Connect the shield to the terminals on the C-rail.
– Connect the C-rail with low impedance to the functional earth.
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On base modules without C-rail:
– Connect the shield as shown in the terminal configuration section.
The module connects the shield to the mounting rail.
– Connect the mounting rail to the functional earth via an earthing terminal.
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In environments with strong EMC interference, base modules without a C-rail provide
better protection if the shield is connected.
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Use copper wiring.
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The terminal configuration as stated on the front plate applies for base modules with C-
rail. The terminal configuration as stated in the technical documentation applies for all
other base modules.
6.1.1
Mechanical connection of the base modules
Procedure:
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Use a flat blade screwdriver (DIN 5264-A)!
DIN 5264-A
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Strip the wire back 8 mm.
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If necessary, label the connection level with a colour marker [3].
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Base module with screw terminals:
– Use a screwdriver to loosen the screw on the screw terminal [1]
– Insert the stripped cable into the round fixing hole [2], as far as it will go.
– Tighten up the screw on the screw terminal.
– Check that the cable is firmly seated.
