Flowserve UEX Limitorque - Manual (Page 48)

Limitorque UEX FCD LMENIM1205-03-AQ – 05/15
48
Total cable length between repeaters or nodes with repeaters:
• @ 9.6 kbps: 6560 ft (2 km)
• @ 19.2 kbps: 3300 ft. (1 km)
Key Specifications
• Resistance/1000 ft = 24 AWG (7 x 32)
24 ohms each conductor (48 ohms for the pair)
• Capacitance/ft. = 12.8 pF (conductor-to-conductor)
• Capacitance/ft. = 23 pF (conductor-to-shield)
Figure 16.1 – Typical Modbus Network Wiring Diagrams – Single Loop
Legend:
MOV - Motor Operated Valve
A1 -Data Channel 1
A1*-Data Channel 1*
A2 -Data Channel 2
A2*-Data Channel 2*
N/C-No Connection
-Shielded cable
Notes:
• Correct polarity for field unit and master station
connections is necessary for proper operation.
•
The connections shown are typical. The number of
MOVs will vary up to a maximum of 250.
• The ground connection should be a ground rod or
ground grid.
•
•
•
41
15
A2
A2*
29
A1
A1*
30
16
Shield
N/C
41
15
A2
A2*
29
A1
A1*
30
16
Shield
N/C
41
15
A2
A2*
29
A1
A1*
30
16
Shield
N/C
MOV-1 MOV-2
MOV-250