Endress+Hauser RID14, Руководство по эксплуатации

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RID14 Wiring
Hauser 19
a switch. If this is not the case, a separate bus terminator must be installed. Please also
note the following:
• In the case of a branched bus segment, the measuring device furthest from the segment
coupler represents the end of the bus.
• If the fieldbus is extended with a repeater then the extension must also be terminated at
both ends.
5.3.7 Further information
General information and additional wiring instructions are provided in the manual
"Guidelines for planning and commissioning, PROFIBUS ® DP/PA, field communication".
Source: www.endress.com/download → Advanced → "Documentation Code" BA00034S.
5.4 Degree of protection
The devices fulfill the requirements for IP 67 degree of protection. Compliance with the
following points is mandatory to ensure IP 67 protection is guaranteed after installation or
after service work:
• The housing seal must be clean and undamaged when it is inserted into the groove. The
seal should be cleaned, dried or replaced.
• The connecting cables must be of the specified outer diameter (e.g. M16 x 1.5, cable
diameter 5 to 10 mm (0.2 to 0.39 in)).
• Replace all unused cable entries with dummy plugs.
• The cable entry seal may not be removed from the cable entry.
• The housing cover and cable entry/entries must be closed securely.
• Install the device in such a way that the cable entries point downwards.
5.5 Post-connection check
After the electrical installation of the device, always run the following final checks:
Device condition and specifications Notes
Are cables or the device damaged (visual inspection)? -
Electrical connection Notes
Does the supply voltage match the specifications on the nameplate? 9 to 32 V
DC
Do the cables used comply with the specifications? Fieldbus cable, see
specification
Do the cables have adequate strain relief? -
Are the power supply and signal cables correctly connected? →  14
Are all the screw terminals well tightened and have the connections of the spring
terminals been checked? -
Are all the cable entries installed, tightened and sealed? Cable run with "water
trap"? -
Are all housing covers installed and firmly tightened? -
Are all the connection components (T-box, junction boxes, connectors, etc.)
correctly connected to one another? -
Has each fieldbus segment been terminated by a bus terminator at both ends? -
Has the max. length of the fieldbus cable, as defined in the fieldbus specifications,
been observed? see cable specifications
→  16