Nuvo-4000 Series User’s Manual
Copyright © 2014 Neousys Technology Inc. All Right Reserved.
Page 68 of 76
A.3 Using DIO Function
Wiring for DIO
The digital input function of Nuvo-4000 is implemented using a photo-coupler with a
internally series-connected 4.7k ohm resistor. You need to provide a voltage to specify the
logic high/low state. The input voltage for logic high is 5~24V, and the input voltage for logic
low is 0~1.5V
The digital output function of Nuvo-4000 is implemented using Power Analog
Device iCoupler® component. The DO channels are configured as NO (normally-open)
configuration. When you turn on Nuvo-4000, all DO channels have a deterministic state of
logic 0 (circuit disconnected from GND return). When logic 1 is specified, MOSFET is
activated and GND return path is established. You should configure a sinking current
connection for DO of Nuvo-4000. The following diagrams are the suggested wiring for DO:
