Proline Promass F 100 Modbus RS485 Electrical connection
29
Signal damping Max. 9 dB over the entire length of the cable cross-section
Shield Copper braided shielding or braided shielding with foil shield. When grounding
the cable shield, observe the grounding concept of the plant.
Connecting cable between Safety Barrier Promass 100 and measuring device
Cable type Shielded twisted-pair cable with 2x2 wires. When grounding the cable shield,
observe the grounding concept of the plant.
Maximum cable resistance 2.5 Ω, one side
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 .
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-sections0.5 to 2.5 mm
2
(20 to 14 AWG)
7.1.3 Terminal assignment
Transmitter
Modbus RS485 connection version
For use in the non-hazardous area and Zone 2/Div. 2
Order code for "Output", option M
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