Pilz PMI m309 diag, Руководство по эксплуатации

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Installation and wiring
5-6 PMI m309 diag operating manual
Earth connector
• Connect the earthing socket on the housing (press-fit bush M4 on the
side of the housing) to the earth bus bar on the control cabinet or unit.
Use as short a copper conductor as possible (cross section min. 2.5 mm
2 ).
• If there are several units in the control cabinet or unit, ensure the earth
conductor is connected in a star formation on the bus bar.
• The earth conductor (cross section min. 2.5 mm
2
) must be connected
to the terminal marked on the supply voltage connector.
Fig. 5-4: Connection diagram for earth conductor
Screening
• Connect the power cable screening with low impedance to earth.
• Use screened data cable only.
• Due to high frequency, we recommend that the screening connection on
the data line cable (RS-232 cable) is earthed on both sides. If you are
using longer cables and there is the possibility of transient currents, we
recommend one of the following methods:
- use equipotential bonding cable
- isolate the potentials
• Data line screening is connected to a bus bar.
• The connection between the bus bar and the control cabinet/unit must be
short and with low impedance.
• Fasten the braided screening to the screen bar over as large a surface
area as possible (e.g. with metal hose clips or polyurethane (PU) cable
clips).