This is an advanced setting, and adjusts the duty cycle algorithm used to operate the valve in automated grading mode. The Min Valve DC setting determines how quickly the valve reacts to a required elevation change within the initial 1 second of receiving a new GPS altitude. The value may be set between 0 and 1000. The default value is 250, and this should work well for most applications. If you find that you aren’t seeing the initial hydraulic response happening fast enough (for example on very bumpy ground), you may want to try increasing the value. Equipment with larger hydraulics may also benefit from increasing this value to increase the initial hydraulic response time. Equipment with very small hydraulics may benefit from reducing this value if the implement appears to ‘overshoot’ the target height.
CHANGING THIS SETTING COULD CAUSE UNPREDICTABLE RESULTS, SO IT IS IMPORTANT TO ONLY ADJUST BY A SMALL INCREMENT EACH TIME. IT IS RECOMMENDED TO INCREASE THE VALUE FROM 250 TO 275, AND TEST THE SYSTEM, THEN CONTINUE TO INCREASE BY VALUES OF 25 TO 50 AT A TIME TO DETERMINE THE OPTIMUM SETTING. IT SHOULD NOT BE NECESSARY TO GO MUCH HIGHER THAN 400 IN MOST CASES, AND DOING SO MAY CAUSE JERKY MOVEMENTS AND ‘OVERSHOOT’ DUE TO TOO MUCH HYDRAULIC TRAVEL BEFORE THE NEXT GPS SIGNAL IS RECEIVED.
Another consideration here is your GPS accuracy. If you aren’t using RTK, turning up this setting may result in the implement making lots of rapid up/down movements as it constantly tries to compensate for GPS drift. If you are using less accurate GPS and are seeing lots of unnecessary movement you could try decreasing the value, to say 200, and see if that helps.
This is an advanced setting, similar to the Min Valve DC setting, that adjusts the responsiveness of the valve when greater elevation changes are required. This value affects the algorithm used when, for example, your implement suddenly begins to climb (i.e. when going over a hump), and therefore the Control Module is trying to lower the blade as quickly as possible. Values may be set between 0 and 1000. The default is 600. In testing, we found this to be good in most cases. If you are working on bumpy ground and finding that the machine doesn’t respond quickly enough you may try increasing the value gradually up to 700 or 800 as this may offer some improvement, though the machine may appear to be more ‘jerky’.