×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

RF Interface to PLC

RF Interface to PLC

RF Interface to PLC

(OP)
All,

I'm looking for guidance in using RF I/O interface to a PLC.  We have an application where we are using a rotary carousel to hold items under pressure and we are monitoring pressure as the item rotates around the carousel.  We are thinking of using 24VDC for the power supply through a rotary brush system, but don't want to send control signals through a brush and rotor system due to noise considerations.  We have heard of RF for controls signals being used in other systems, but don't have any experience with these types of set-ups.  Any feedback on manufacturers and or problems encountered would be most helpful.

Regards,

Rich.....viking

Richard Nornhold, PE

RE: RF Interface to PLC

Honeywell has "true wireless": battery powered, wireless pressure transmitters, so you don't need wired power to the transmitter.

The trade-off for battery life is low RF power and low transmission rates.

Presumably low power is not a big deal - it's sounds like you have a manufacturing cell where the receiver can be close to the transmitter(s).

The fastest transmission rates is 1/second per transmitter.  If that rate is fast enough for your situation you might look at their XYR5000 line

US web site is
http://content.honeywell.com/imc/fi/wirelessTransmitters/

RE: RF Interface to PLC

Use a plc just for I/O.  Put a timer in the logic that must be reset every second.  If it times out the outputs are turned to fail safe state.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources