19 Diagnostics Field-IQ diagnostics
Section control timing is off.
1. Check that all implement and vehicle measurements are correct. (Do not guess. These
measurements are crucial for an accurate application.)
2. Check that start and end overlaps have not been adjusted to take care of timing issues. (These
settings are only used for intentional overlap!)
If sections are coming on too late or shutting off too late:
1. Check that start and end overlaps are set to the desired intentional overlap.
2. Raise the on latency to allow the section to turn on earlier.
3. Raise the off latency to allow the system to start turning off earlier. Typically these settings are
no more than 5 seconds. If they are higher double check implement measurements.
If sections are coming on too early or shutting off too early:
1. Check that start and end overlaps are set to desired intentional overlap.
2. Lower the on latency if the system is turning on too soon.
3. Lower the off latency if the system is shutting off too soon.
4. If settings are set to 0 and system is still not accurate check implement measurements.
Any Implement Sensor troubleshooting
Erratic sensor readings.
1. Has sensor been calibrated?
2. Check that sensor is specified properly for the system.
3. Make sure the feedback voltage is in the right range. Pressure sensors are 0 to 5 V.
Erratic flowmeter / encoder readings.
1. Check all cabling and connections.
2. Check that the encoder constant is correct.
3. Check that there isn’t a rate control issue by setting the Rate to Manual to lock the valve.
4. Check that the meter is sized properly for the application.
5. Check that there is nothing mechanically wrong with the meter.
Version 9.25, Revision B FM-1000 Integrated Display User Guide 497
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