Chapter 3: I/O Configuration And Wiring; Radio Wiring - Emerson FB2100 Instruction Manual

Chapter 3: I/O Configuration and Wiring

This chapter covers the following topics:
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I/O in the FB2100 flow computer comes from the integrated multivariable sensor and RTD
connector, and the CPU board with one of possible two I/O options. In I/O option 1 the
CPU has a single digital output. In I/O option 2 the CPU has two channels individually
configurable as either digital inputs (DI), digital outputs (DO) or pulse inputs (PI) and two
channels individually configurable as either analog inputs (AI) or analog outputs (AO).
Note
Terminal blocks TB3 and TB4 are unused on the FB2100.
Note
When using a digital output to drive an inductive load (such as a relay coil), place a
suppression diode across the load. This protects the DO from the reverse Electro-Motive
Force (EMF) spike generated when the inductive load is switched off.
Notes About Power for an External Device Connected to a Flow Computer I/O Point:
If the external device does not include its own integrated power supply, you must provide
your own external supply (30Vdc maximum) for that device.
I/O Configuration and Wiring
Analog Inputs
Analog Outputs
Digital Inputs
Digital Outputs
Pulse Inputs
Connecting the RTD/PRT
Wiring a Digital Output to the Optional Relay

Radio Wiring

FB2100 Flow Computer Instruction Manual
D301783X012
November 2023
65