Ever use ground pressure sensing for auto header height with a MacDon? - Page 5 - The Combine Forum
 6Likes
Reply
 
LinkBack Thread Tools
post #41 of 73 (permalink) Old 12-04-2018, 11:58 PM
Senior Member
 
seedcleaner's Avatar
 
Join Date: Nov 2007
Location: Mid-Missouri
Posts: 2,373
Mentioned: 0 Post(s)
Quoted: 340 Post(s)
...this is now page two...

seedcleaner is offline  
Sponsored Links
Advertisement
 
post #42 of 73 (permalink) Old 12-21-2018, 07:03 AM Thread Starter
HI!
 
Join Date: Jan 2007
Location: Three Hills/Trochu, Alberta, Canada
Posts: 1,701
Mentioned: 6 Post(s)
Quoted: 4446 Post(s)
Quote:
Originally Posted by Jeff-C-IL View Post
The contact pressure setting is new to me too. Just had that thrown at me a couple times during troubleshooting this fall. Gonna need to look into what it does and why....
Dung up some info on “contact weight”.

Essentially it is watching the pressure in the header lift cylinders, and making header height adjustments to those if there is no change in CAC sensors.

So, take the example of a rigid cutterbar, 40ft, with only 2 sensors on the very ends. If you were cutting very close to the ground, along a small ridge in the center of the head, if you got too low with your header height the cutterbar would hit the ground. However, the two sensor bands would not see any difference in cutting height, since they aren't on the ridge. Older machines would continue to dig into the dirt until the operator noticed. With this contact weight feature, the machine will detect that the lift cylinder pressure is lower than it should be, and raise the cutter bar very slightly to protect it.

Don Boles is offline  
post #43 of 73 (permalink) Old 12-21-2018, 11:20 AM
Senior Member
 
Join Date: Nov 2014
Location: NW North Dakota
Posts: 327
Mentioned: 0 Post(s)
Quoted: 88 Post(s)
Quote:
Originally Posted by seedcleaner View Post
...this is now page two...
Looks like I'm not the only one using the maximum posts per page setting lol.
Daner is offline  
Sponsored Links
Advertisement
 
post #44 of 73 (permalink) Old 12-21-2018, 11:29 AM Thread Starter
HI!
 
Join Date: Jan 2007
Location: Three Hills/Trochu, Alberta, Canada
Posts: 1,701
Mentioned: 6 Post(s)
Quoted: 4446 Post(s)
Not all know about that setting though.
Don Boles is offline  
post #45 of 73 (permalink) Old 12-21-2018, 11:43 AM
Senior Member
 
Join Date: Oct 2009
Location: Beaumont, Alberta
Posts: 502
Mentioned: 0 Post(s)
Quoted: 72 Post(s)
Barn
Quote:
Originally Posted by Don Boles View Post
Dung up some info on “contact weight”.

Essentially it is watching the pressure in the header lift cylinders, and making header height adjustments to those if there is no change in CAC sensors.

So, take the example of a rigid cutterbar, 40ft, with only 2 sensors on the very ends. If you were cutting very close to the ground, along a small ridge in the center of the head, if you got too low with your header height the cutterbar would hit the ground. However, the two sensor bands would not see any difference in cutting height, since they aren't on the ridge. Older machines would continue to dig into the dirt until the operator noticed. With this contact weight feature, the machine will detect that the lift cylinder pressure is lower than it should be, and raise the cutter bar very slightly to protect it.
hmmm wonder if cebis can be updated on the 2012 760 to have this "contact weight added" it would sure help in the hills i have here with the vario header.

Lexion 590 2009
Maxflex header 1050 35 ft
Vario header 1050 35 ft
briandublanko is offline  
post #46 of 73 (permalink) Old 12-21-2018, 11:56 AM Thread Starter
HI!
 
Join Date: Jan 2007
Location: Three Hills/Trochu, Alberta, Canada
Posts: 1,701
Mentioned: 6 Post(s)
Quoted: 4446 Post(s)
Quote:
Originally Posted by briandublanko View Post
hmmm wonder if cebis can be updated on the 2012 760 to have this "contact weight added" it would sure help in the hills i have here with the vario header.
If the pressure measuring equipment is there perhaps so.
On recent units calibration the first lift calibrates other sensors, the second lift actually weighs (hydraulic pressure needed) the header, that is used for contact weight.
Don Boles is offline  
post #47 of 73 (permalink) Old 12-21-2018, 01:15 PM
Member
 
Join Date: Jan 2010
Location: West of Winnipeg
Posts: 83
Mentioned: 0 Post(s)
Quoted: 7 Post(s)
Quote:
Originally Posted by briandublanko View Post
hmmm wonder if cebis can be updated on the 2012 760 to have this "contact weight added" it would sure help in the hills i have here with the vario header.

That is a standard thing on ALL Lexions! No matter how old.

On the Joystick the Lift button left side is ground comp.and right side is cuttingheight.
If you tap it it short left it will go down to the preset setting you have to do.
challenger is offline  
post #48 of 73 (permalink) Old 12-21-2018, 06:27 PM
Senior Member
 
Jeff-C-IL's Avatar
 
Join Date: Jul 2015
Posts: 1,021
Mentioned: 0 Post(s)
Quoted: 186 Post(s)
Quote:
Originally Posted by Don Boles View Post
If the pressure measuring equipment is there perhaps so.
On recent units calibration the first lift calibrates other sensors, the second lift actually weighs (hydraulic pressure needed) the header, that is used for contact weight.
The first stroke calibrates the Feederhouse position sensor. The second stroke calibrates the sensors on the head and the lift pressure.

AHHC specialist
Jeff-C-IL is offline  
post #49 of 73 (permalink) Old 12-21-2018, 06:31 PM
Senior Member
 
Join Date: Oct 2009
Location: Beaumont, Alberta
Posts: 502
Mentioned: 0 Post(s)
Quoted: 72 Post(s)
Barn
the left side of the button on handle is using the sensing bands and ground pressure setting but on the newer models you can set how much ground sensing pressure it takes to react to ground pressure whereas the older 700 series have a fixed ground pressure sensing setting. Hense why i was asking if cebis can be updated to get this fine tune setting for ground pressure.

Lexion 590 2009
Maxflex header 1050 35 ft
Vario header 1050 35 ft

Last edited by briandublanko; 12-21-2018 at 06:33 PM.
briandublanko is offline  
post #50 of 73 (permalink) Old 12-21-2018, 06:37 PM Thread Starter
HI!
 
Join Date: Jan 2007
Location: Three Hills/Trochu, Alberta, Canada
Posts: 1,701
Mentioned: 6 Post(s)
Quoted: 4446 Post(s)
Quote:
Originally Posted by Jeff-C-IL View Post
The first stroke calibrates the Feederhouse position sensor. The second stroke calibrates the sensors on the head and the lift pressure.
Bit of a mystery why that takes two complete cycles and why header has to be running.
Although, by running the header associated running vibrations reduces stiction issues on various components including cylinders giving more accurate readings.
Claas clever I guess.

Don Boles is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the The Combine Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
R52 Header Height Control bharper Gleaner 5 10-21-2016 12:03 PM
Header Height Calibration seedcleaner Claas / Lexion 4 10-01-2016 08:33 AM
Header pressure on 630F on 9570 deere John Deere 7 10-19-2011 06:12 PM
2008 9770 active header float option. jdgreen John Deere 4 08-23-2010 10:22 PM
new john deere flex draper?? binbuster Headers 129 07-10-2009 10:22 AM

Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome