SICK PFT Mode D'emploi page 24

Operating Instructions
Electrical connection
Connect the instrument to earth via the pressure connection.
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Operate the pressure transmitter with a shielded cable and earth the shield at least on one
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side of the cable, if the cable is longer than 30m (2-wire) or 3m (3- or 4-wire), or if it is run
outside of the building.
Use power supplies which guarantee reliable electrical isolation of the operating voltage
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as per IEC/DIN EN 60204-1. Consider also the general requirements for PELV circuits in
accordance with IEC/DIN EN 60204-1. Alternative for North America: The connection may
also be made to „Class 2 Circuits" or „Class 2 Power Units" according to CEC (Canadian
Electrical Code) or NEC (National Electrical Code.
Ingress protection per IEC 60529 (The ingress protection classes specified only apply while
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the pressure transmitter is connected with female connectors that provide the correspon-
ding ingress protection).
Ensure that the cable diameter you select fits to the cable gland of the connector. Ensure
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that the cable gland of the mounted connector is positioned correctly and that the sealings
are available and undamaged. Tighten the threaded connection and check the correct
position of the sealings in order to ensure the ingress protection.
Please make sure that the ends of cables with flying leads do not allow any ingress of
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moisture.
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7. Starting, operation
© SICK AG • Germany • All rights reserved
PFT
GB
8013155/ZZV8/2018-06-25