19 Diagnostics Field-IQ diagnostics
Unable to reach target rate.
1. Check that maximum meter RPM has not been set to low. System defaults to 120 RPM
2. Rawson: Check that maximum motor RPM has been set to 300 RPM
3. Check Gear ratio and encoder constant (gear ratio needs to be figured from the encoder to the
meter.)
4. Check info tab in the drive calibration screen. Make sure target rates and speeds are logical. If
they are not this usually represents improper Field-IQ system set up.
If the settings check out okay:
1. Check that the control valve has been calibrated. If PWM, check upper PWM limit under
advanced parameters. May need to be set to 100%.
2. Rawson: Check that the motor will reach 300 RPM in the hydraulic test. If it will and system still
can’t reach rate check that the gear ratio will allow system to reach target rate. Formula on
page.
If the rate fluctuates around the target:
1. Check that a drive calibration has been performed.
2. If population monitoring is on, disable it to see target rate of the motors. If system holds rate it
is a seed monitoring issue.
Drive calibration is performed (PWM):
1. Check that motor(s) have sufficient hydraulic flow.
2. Raise the PWM base frequency to 200Hz. (if PWM valve is a raven set to 120hz)
Rawson:
1. Check that drive is running above 100 RPM. Adjust gear ratio to achieve proper RPM.
2. Isolate the drive from the seed shaft. Make sure the drive operates properly with no load.
No communication with seed sensors.
1. Check that the Auxiliary I/O connector is plugged in.
2. A power cycle must be performed every time a cable is plugged in. The system only looks for
the sensors on boot up. If they are not present it won’t look for them until power is cycled.
3. Check that sensors are compatible with Field-IQ.
If the cables are connected:
Version 9.25, Revision B FM-1000 Integrated Display User Guide 499
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