Wiring Proline Promag 53 MODBUS RS485
52 Endress+Hauser
4.6 Post-connection check
Perform the following checks after electrical installation of the measuring device:
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? 85 to 260 V AC (45 to 65 Hz)
20 to 55 V AC (45 to 65 Hz)
16 to 62 V DC
Do the cables comply with the specifications? → ä 46
Do the cables have adequate strain relief? -
Cables correctly segregated by type?
Without loops and crossovers?
-
Are the power-supply and signal cables correctly connected? See the wiring diagram inside
the cover of the connection
compartment
Are all screw terminals firmly tightened? -
Have the measures for grounding/potential matching been correctly
implemented?
→ ä 49
Are all cable entries installed, firmly tightened and correctly sealed?
Cables looped as "water traps"?
→ ä 51
Are all housing covers installed and firmly tightened? -
Fieldbus electrical connection Notes
Has each fieldbus segment been terminated at both ends with a bus terminator? → ä 76
Has the max. length of the fieldbus cable been observed in accordance with the
specifications?
→ ä 40
Has the max. length of the spurs been observed in accordance with the
specifications?
→ ä 40
Is the fieldbus cable fully shielded and correctly grounded? → ä 41
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