Number Of Devices; Entity Model - GE FVP110 Maintenance Manual

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Number of Devices

The number of devices (max. 32) possible on a fieldbus link depends on factors such as
the power consumption of each device, the type of cable used, use of repeaters, etc.

Entity Model

I.S. fieldbus system complying with Entity model
I.S. values Power supply-field device:
Po ≤ Pi, Uo ≤ Ui, Io ≤ Ii
Calculation of max. allowed cable length:
Ccable ≤ Co - Σci - Σci (Terminator)
Lcable ≤ Lo - ΣLi
EEx ia IIB T4
Maximum Voltage (Ui) = 17.5 V
Maximum Current (Ii) = 380 mA
Maximum Power (Pi) = 5.32 W
Internal Capacitance (Ci) = 1.76 nF
Internal Inductance (Li) = 0 μH
Figure 7 Entity Model
FVP 110 Fieldbus Valve Positioner Manual
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