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Paxton, IL | I'm running a Case IH Steiger 385 pulling a pull type Gold Digger Stealth tile plow. I'm using a Case IH FM1000 (firmware v10.13) with WM-Drain. I have it set up using direct connect to control the tractor hydraulics to pitch the plow. I also have an IMD-600 sensor installed and have WM-Drain set to use it for pitch control.
I set this plow up, calibrated, and last used it about 10 years ago. At that time everything was working great. I have since updated firmware in the display and when I hooked up to the plow this fall, I found that I needed to update the firmware on the IMD-600 to be compatible with the newer software version in the display. I got that updated this morning, took the plow out to survey a couple lines, then tried to pre rip a line as a test to see how everything was working.
The plow always wanted to make very large pitch corrections in both directions trying to hunt for its target. I double checked all settings and calibration numbers I had written down previously and everything was just as I had written it down 10 years ago. This is the same tractor and have the hydraulic flow set the same as well. I played with calibration and hydraulic flow values for a while. If I got it to settle down and hold grade, it was then too lazy to make more than a very minor adjustment if it needed too.
As I understand it, when the system is set up for pitch control using the IMD-600, it uses the sensors pitch data to look ahead and know how much of a correction it needs to make to help it maintain grade. There is a height gain value in the settings that is supposed to control how much the plow will pitch up or down to make an adjustment. If all this is working correctly, I don't see why the pitch cylinders on the plow are making such large swings either way. The only thing I can think of is that either there is a software issue in the newer firmware, or I have an issue with my IMD-600, which has been sitting still for years. I do see the boot slope value changing appropriately when I pitch it up or down though. In the IMD-600 diagnostics page, I do noticed there is "sensor status" report that says "Bad 0x38". I'm not entirely sure what that means, but guess it could be a sign that something isn't right.
Does anyone have any other ideas what's going on? Was this a known issue in any software version, or what you would typically see with a faulty IMD-600?
After thinking about it for a while, I may go try it tomorrow with it set up for just height control instead of pitch control. | |
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WM-Drain used to work, now plow overshoots target.
