Emerson FB3000, Instruction Manual

Page: 53 / 96

Emerson FB3000 RTU Instruction Manual
D301851X012
May 2022
I/O Configuration and Wiring 41
3.3.1 DI Wiring
Figure 3-4 shows how to wire the digital input.
In the figure, AIDIPI_6 is shown configured as a digital input. ISO_GND (pin 10) is the
ground connection for AIDIPI_6.
Figure 3-4: Digital Input (DI) Wiring (internal pull-up enabled)
3.4 Digital Outputs
The mixed I/O modules of the FB3000 RTU include two dedicated digital output
channels.
Notes
 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 (see
DO2 in
Figure 3-5 .)

Internally, the DO acts as a simple contact closure.