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12
4 Electrical connection
4.1
Installation notes
❏
The choice of cable, the installation and the electrical connection must
conform to the requirements of VDE 0100 “Regulations on the Installation
of Power Circuits with Nominal Voltages below 1000 V” or the appropriate
local regulations.
❏
If contact with live parts is possible while working on the device, it must be
completely disconnected from the electrical supply.
❏
Load circuits must be fused for the maximum relay current in each case, in
order to prevent welding of the relay contacts in the event of a short circuit.
❏
The electromagnetic compatibility conforms to EN 61326.
❏
Run input, output and supply cables separately and not parallel to one
another.
❏
Uses shielded sensor cables with twisted conductors. Do not run these
cables close to current-carrying components or cables. Ground shielding at
one end.
❏
Sensor leads should be implemented as uninterrupted cables (not routed
via terminal blocks etc.).
❏
Do not connect any additional loads to the supply terminals of the
instrument.
❏
The instrument is not suitable for use in areas with an explosion hazard (Ex
areas).
❏
Apart from faulty installation, incorrect settings on the instrument may also
affect the proper functioning of the subsequent process or lead to damage.
Safety devices independent of the instrument should therefore always be
provided and should only be capable of adjustment by specialist personnel.
Conductor
cross-sections
and core-end
ferrules
Fitting sizes
The electrical connection must only be carried out
by qualified professional persons !
Minimum
cross-section
Maximum
cross-section
Min. length of
core-end
ferrule
Without core-end ferrule
0.34mm
2
2.5mm
2
10mm
(stripped)
Core-end ferrule, no lip
0.25mm
2
2.5mm
2
10mm
Core-end ferrule, lip up to 1.5mm
2
0.25mm
2
1.5mm
2
10mm
Core-end ferrule, lip above 1.5mm
2
1.5mm
2
2.5mm
2
12mm
Twin ferrule with lip
0.25mm
2
1.5mm
2
12mm
The IP67 enclosure protection for the instrument will only be achieved if each
cable is fed into the instrument through a cable gland.
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