sauter equitherm EQJW126F001, Mounting And Operating Instructions

Page: 78 / 110

Electrical connection
10 Electrical connection
DANGER!
Risk of electric shock!
For electrical installation, you are required to observe the relevant
electrotechnical regu- lations of the country of use as well as the regulations of
the local power suppliers. Make sure all electrical connections are installed by
trained and experienced personnel!
Notes on installing the electrical connections

Install the 230 V power supply lines and the signal lines separately! To increase
noise immunity, 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.

The lines for digital signals (bus lines) and analog signals (sensor lines,
analog out- puts) must also be installed separately!

In plants with a high electromagnetic noise level, we recommend to use
shielded ca- bles for the analog signal lines. Ground the shield at one side,
either at the control
cabinet inlet 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.

Inductances in the control cabinet, e.g. contactor coils, are to be
equipped with suit- able interference suppressors (RC elements).

Control cabinet elements with high field strength, e.g. transformers or
frequency converters, should be shielded with separators providing a good ground
connection.
Overvoltage protection

If signal lines are installed outside buildings or over large distances, make
sure ap- propriate surge or overvoltage protection measures are taken. Such
measures are indispensable for bus lines!

The shield of signal lines installed outside buildings must have current
conducting capacity and must be grounded on both sides.

Surge diverters must be installed at the control cabinet inlet.
Connecting the controller
The controller is connected as illustrated in the folowing wiring diagram.
Open the housing to connect the cables. To connect the feeding cables, make
holes in the marked locations at the top, bottom or back of the rear part of the
housing and fit suitable grommets or cable glands.