LPGmass Modbus RS485
Electrical connection
Hauser
23
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)