×
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

Anyone have a PLC control system specification?
2

Anyone have a PLC control system specification?

Anyone have a PLC control system specification?

(OP)
I'm developing a written specification for a small PLC control system to be supplied with some process equipment.  Does anyone have a document that I could start with instead of starting from scratch?  I'm specifying an AB SLC-5/05 and either a panelview or RSView HMI.  I'm particularly interested to know what other engineers require for cabinet design.

RE: Anyone have a PLC control system specification?

Check with any of the plc mfg, they all have guide specification. Most I have seen use enclosures with racks. Try Allen Brady, they sell enclosures for thier plc's.

RE: Anyone have a PLC control system specification?

Specify lots.  Does the location require NEMA 1, 12, 4X (IP equivalant), area classification, ...  Do you want 12-inch space above and below the terminal rails?  If you do not specify the supplier may run terminals from the floor and ceiling.  Do you need Nylon turminals with knife disconnecting fused terminals and blown fuse indicators installed in a manner that the indicator lights when the fuse is blown?  Do you want the relays to be removable or installed where you can read the terminal numbers on the base?  What are your wiring requirements, insulation type, wire tags, etc.?  Somehow you need to specify at least three-times the wire duct that you think necessary or the cover will never close.  You better tell the supplier.  Define your requirements in your bid documents or you will not get what you want.



Rittal ES.

John

RE: Anyone have a PLC control system specification?

I agree, even the smallest jobs require the utmost care in addressing every detail if your talking about a cabinet. You should address lots of things including standards such as UL and the NEC. The more info you provide the better results you will get.

RE: Anyone have a PLC control system specification?

One area I have found that is generally lacking is wire color coding/sizing.  You can go to NFPA.org and download (for a small fee) the NFPA 79 section of the manual (the entire NEC is only section 110). In NFPA 79, they specify everything for the enclosure/control wiring including colors, size, what schematic drawings should look like etc.

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