Proline Promass I 100 Modbus RS485 Electrical connection
Endress+Hauser 25
‣
Comply with the maximum cable resistance specifications to ensure the operational
reliability of the measuring device.
The maximum cable length for individual wire cross-sections is specified in the table
below. Observe the maximum capacitance and inductance per unit length of the cable and
the connection values in the Ex documentation ( 93).
Wire cross-section Maximum cable length
[mm
2
] [AWG] [m] [ft]
0.5 20 70 230
0.75 18 100 328
1.0 17 100 328
1.5 16 200 656
2.5 14 300 984
Cable diameter
• Cable glands supplied:
M20 × 1.5 with cable 6 to 12 mm (0.24 to 0.47 in)
• Spring terminals:
wire cross-sections 0.5 to 2.5 mm
2
(20 to 14 AWG)
• With Safety Barrier Promass 100:
Plug-in screw terminals for wire cross-sections 0.5 to 2.5 mm2 (20 to 14 AWG)
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