UK
Electronic Preset Counter E89005
9
5 Electrical connection
WARNING
The device must be disconnected from the power supply, before any installation
or maintenance work is carried out�
AC-powered devices must only be connected to the lowvoltage network via a
switch or circuit breaker�
Installation or maintenance work must only be carried out by qualified personnel�
5.1 Advice on noise immunity
All connections are protected against external sources of interference�
The installation location should be chosen so that inductive or capacitive
interference does not affect the device or its connecting lines! Interference (e�g�
from switchmode power supplies, motors, clocked controllers or contactors) can be
reduced by means of appropriate cable routing and wiring�
Measures to be taken:
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Connect the terminal 2 (GND) with ground�
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Use only shielded cable for signal and control lines�
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Connect cable shield at both ends�
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The conductor cross-section of the cables should be a minimum of 0�4 mm²�
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The shield connection to the equipotential bonding should be as short as
possible and with a contact area as large as possible (low-impedance)�
►
Only connect the shields to the control panel, if the latter is also earthed�
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Install the device as far away as possible from noise-containing cables�
►
Avoid routing signal or control cables parallel to power lines�
►
Cables and their insulation should be in accordance with the intended
temperature and voltage ranges�