Relay Contact Soft-Device

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Overview

Each configured Relay Contact Input Soft-Device provides one contact state digital input.  A single relay may have one or more contacts.  If the relay contacts are "double throw" then you will have three wires, one common, one normally closed and one "normally open".  You may connect the two wires from any one set of contacts to any two Soft-I/O pins or you may connect one wire to the same pin as other contacts and then connect the second wire to any other Soft-I/O pin, thus saving pins.  You may configure the input pin to source current or sink current.  It's up to you.  Just make sure that the common contact is the same level.  Of course, Soft-I/O will guide you to make sure that you do not accidentally connect it up incorrectly.  It's that simple!

Features

  • Two-wire connection
  • Soft-I/O supplies power to the relay contacts
  • Supply power choice of 5V or 24V
  • User editable state names
  • State inverse settings
  • De-bounce time
  • Flexible pin assignments
  • Non-volatile saving of settings
  • Flexible tags for remote control

In Action

You configure the relay contacts by giving it a name, for example "Pump is Running", and then drag-and-drop the connections to any Soft-I/O pins.  Mechanical relay contacts "bounce" when they close.  Because Soft-I/O is so fast, Soft-I/O can sense multiple "bounces" of the contacts and could perform the function more than once.  To avoid multiple responses, you merely configure the "de-bounce time" when you configure the relay contact Soft-Device.  Generally a time of 25 milliseconds will allow the contacts to settle.  When you have finished the configuration, merely submit your choices and then test the relay contacts on the Soft-Device page.  What could be simpler?

Technical Specifications

Each relay contact is connected to the Soft-I/O module with two wires—the module supplies switch power, and that simplifies wiring.
Non-volatile, user-configurable parameters include: Soft-I/O module supplied 24 V or 5 V power selection; normally open or normally closed switch sensing and state naming; switch debounce time; and Soft-I/O pin assignments.

Additional Info

  • Features:
  • In Action:
  • Technical Specifications:
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