7
Electrical connection
Caution!
For electrical connection of the PLC, you are required to observe the relevant electrotechnical
regulations of the country of use as well as the regulations of the local power supplier. Make
sure all electrical connections are installed by trained and qualified personnel!
Notes on installing the electrical connections
4
Install the 230 V power supply lines and the signal lines separately! To increase noise im-
munity, observe a minimum distance of 10 cm between the lines. Make sure the minimum
distance is also observed when the lines are installed in a cabinet.
4
The lines for digital signals (bus lines) and analog signals (sensor lines, analog outputs)
must also be installed separately.
4
In plants with a high electromagnetic noise level, we recommend to use shielded cables
for the analog signal lines. Ground the shield at one side, either at the control cabinet in-
let or outlet, using the largest possible cross-section. Connect the central grounding point
and the PE grounding conductor with a cable
≥
10 mm² using the shortest route.
4
Inductances in the control cabinet, e.g. contactor coils, are to be equipped with suitable
interference suppressors (RC elements).
4
Control cabinet elements with high field strength, e.g. transformers or frequency conver-
ters, should be shielded with separators providing a good ground connection.
Overvoltage protection
4
If signal lines are installed outside buildings or over large distances, make sure appro-
priate surge or overvoltage protection measures are taken. Such measures are indispen-
sable for bus lines!
4
The shield of signal lines installed outside buildings must have current conducting
capacity and be grounded on both sides.
4
Surge diverters must be installed at the control cabinet inlet.
Noise suppression
The TROVIS 5571 Controller with SAMSON actuator is interference suppressed according to
VDE 0875. If different actuator makes are used, or moreover, further actuators with interfer-
ence sources are used in a plant, the operator/supplier of a custom-made plant must make sure
that the entire plant complies with VDE 0875 regulations due to the legal obligation of ensuring
interference suppression.
EB 5571 EN
29
Electrical connection
Summary of Contents for TROVIS 5571
Page 43: ...EB 5571 EN 43...
