Endress+Hauser Proline Promass A 100, Руководство по эксплуатации

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Electrical connection Proline Promass A 100
24 Hauser
Loop resistance ≤110 Ω/km
Signal damping Max. 9 dB over the entire length of the cable cross-section
Shielding Copper braided shielding or braided shielding with foil shield. When grounding
the cable shield, observe the grounding concept of the plant.
Modbus RS485
The EIA/TIA-485 standard specifies two types of cable (A and B) for the bus line which
can be used for every transmission rate. Cable type A is recommended.
Cable type A
Characteristic impedance 135 to 165 Ωat a measuring frequency of 3 to 20 MHz
Cable capacitance <30 pF/m
Wire cross-section
>0.34 mm 2 (22 AWG)
Cable type Twisted pairs
Loop resistance ≤110 Ω/km
Signal damping Max. 9 dB over the entire length of the cable cross-section
Shielding Copper braided shielding or braided shielding with foil shield. When grounding
the cable shield, observe the grounding concept of the plant.
EtherNet/IP
The standard ANSI/TIA/EIA-568-B.2 Annex specifies CAT 5 as the minimum category
for a cable used for EtherNet/IP. CAT 5e and CAT 6 are recommended.
For more information on planning and installing EtherNet/IP networks, please
refer to the "Media Planning and Installation Manual. EtherNet/IP" of the ODVA
Organization.
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.
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