You are not registered yet. Please click here to register!

plc storereviewsdownloads
This board is for PLC Related Q&A ONLY. Please DON'T use it for advertising, etc.
Try our online PLC Simulator- FREE.  Click here now to try it.

---------->>>>>Get FREE PLC Programming Tips

New Here? Please read this important info!!!

Go Back - Interactive Q & A > - Interactive Q & A > LIVE PLC Questions And Answers

PLC training tools sale

Thread Tools Display Modes
Old February 11th, 2019, 03:35 AM   #1

greggerrior is offline
Join Date: Sep 2015
Location: nova scotia
Posts: 9
Mdi xr-3000

currently getting an outrageous amount of false trips on our MDI XR-3000 metal detector, we have it set to the lowest sensitivity setting. we are fairly confident that the false trips are being caused by high metal content in the ore we are processing, does anyone have any suggestions that could solve this issue?

thanks for any and all help.
  Reply With Quote
Old February 11th, 2019, 03:48 AM   #2
Supporting Member
United Kingdom

Rob... is offline
Join Date: Jul 2016
Location: Manchester
Posts: 255
So you're passing metal ore through a metal detector and don't want it to signal metal is present?

I don't think you're using the right tool for the job.

Maybe a gamma ray spectrum analyse would be better suited. It's what I've previously used in quarrying applications to work out the material content of what was being crushed.

Had a big magnet to pull metal from the conveyor.
  Reply With Quote
Old February 11th, 2019, 12:48 PM   #3
United States

5618 is offline
5618's Avatar
Join Date: Oct 2017
Location: York, PA
Posts: 105
I know nothing of this model metal detector. The aperture models I know have a transmitter coil and two reciever coils. The receiver coils are wired out of phase so they cancel each other for a near zero signal. As something conductive or reactive passes through, there's an imbalance in the reciever coils and some level of signal to detect.

Anyway, many problems can be from the mounting framework. Attachment points within the magnetic field must be securely connected or securely isolated. A loose connection in surrounding framework that touches and opens with vibration causes problems. Current loops through the framework making and breaking interfere with the detector. Where practical, we have a single mounting point grounded and the rest isolated. Where there is a loop, make sure it doesn’t intermittently open. Also avoid metal movement near the detector. Make sure guides and chutes are secure with minimal or no movement and are securely isolated or securely grounded.

Another potential problem for us is drifting values of aging components that balance the reciever coils. That would be factory or factory trained service.
  Reply With Quote
Jump to Live PLC Question and Answer Forum


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Topics
Thread Thread Starter Forum Replies Last Post
Ultra 3000 + Siemens CP 340-RS422/485 AlexKur LIVE PLC Questions And Answers 6 January 3rd, 2016 07:06 AM
Problem with RSLogix 5000 homing of Sercos Ultra 3000 and soft overtravel limits Eoghan LIVE PLC Questions And Answers 0 August 12th, 2014 06:01 AM
ProSoft MVI69-MCM Block 3000 mike.m LIVE PLC Questions And Answers 2 March 10th, 2012 11:39 AM
Kinetix 300 versus Ultra 3000 Switek LIVE PLC Questions And Answers 0 July 19th, 2011 04:28 AM
ultra 3000 Adam303 LIVE PLC Questions And Answers 2 March 2nd, 2010 04:59 AM

All times are GMT -5. The time now is 12:46 AM.