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Erratic Actual Rate / Can't Hold Target Rate (Control Valve Tuning)
My actual rate is jumping around, why am I not able to hold the target rate?
There may be multiple reasons why an applicator will not hold target rate. First, make sure the controller settings match the quick reference sheet that was provided with the installation kit. Also, make sure that the Rate Display Smoothing option is checked in Configuration Setup > Equipment Settings.
Once those have been verified, we may need to ensure the flow meter or encoder is operating normally, and has not been damaged. This should be investigated if the actual rate is occasionally lost completely; meaning the display is not receiving any rate feedback.
However, if actual rate is always displayed, but will not lock onto rate, the Control Valve Settings may need to be adjusted. For CAN A Liquid/Dry this can be found under Configuration Setup > Controller Settings. For ISO Liquid this can be found under the gear icon > Control Valve Settings.
For most cases, only adjusting one setting can smooth out erratic rate control:
If more fine-tuning is required, please refer to your Feature User Guide for instructions and Control Valve Setting definitions.
Content last reviewed on: 06/20/2019
Reviewed by: AMJ