Troubleshoot Variable Rate Drive

Warning: Verify power on pins 1 and 3.

No 12 volt power on ISO coupler pins 1 and 3.

Check pins 1 and 3 for 12 volt power.

OUO6074,000106E -19-24OCT08-1/15

WARNING SCREEN: Motor 1, 2 disabled. Drive failed to respond. Verify hydraulic power. Check operator's manual.

NOTE: This warning occurs when motor speed should be greater than 18 rpm and the motors are currently not turning.

No hydraulic pressure or flow.

Make sure hoses are plugged into tractor SCV or power beyond.

Verify correct location of pressure and return lines. A one way check valve is installed in the return line hose tip.

Set tractor SCV to continuous detent and flow. (See MAKING PROPER HOSE CONNECTIONS in the ATTACH AND DETACH VARIABLE RATE DRIVE section.)

Activate tractor SCV.

Low hydraulic pressure or flow to variable drive motors.

Maintain full tractor engine rpm.

Increase tractor SCV flow setting.

Minimize flow to other hydraulic functions.

Verify tractor hydraulic system performance.

No motor speed detected by variable drive controller.

Verify motor speed sensor electrical connections. Note: If this condition exists, the motor without any speed sensor feedback will rotate at a very high RPM for several seconds before full page warning is issued.

Verify set screw in motor coupler in tightened to motor speed shaft.

Verify hydraulic valve electrical connection.

OUO6074,000106E -19-24OCT08-2/15

Mechanical binding causing high torque.

Wing to mainframe drive shaft couplers misaligned. Align drive shaft couplers.

Failed drive shaft support bearings. Replace failed bearings.

Misaligned seed meter and/or chemical hopper disconnects. Inspect and adjust seed meter and/or chemical hopper disconnects.

Identify and repair any other sources of mechanical binding.

A one hydraulic motor system is setup for two hydraulic motors.

Set number of hydraulic motors to one. (See ASSIGN MOTOR-ROWS, SPROCKETS, AND WIDTH DISCONNECT in SETUP Variable Rate Drive section.)

OUO6074,000106E -19-24OCT08-3/15

WARNING SCREEN: Motor 1,2 disabled. Drive failed to respond. Verify hydraulic power. Check operators manual. Minimum ground speed is.

NOTE: This warning occurs when motor speed is expected between 11.5 RPM and 18 RPM, but not occuring.

Motors are not designed to operate less than 18 RPM. For motors to operate above 18 RPM, the ground speed must be above the minimum. The minimum ground speed varies depending on SETUP.

Operate planter above minimum ground speed.

No hydraulic pressure or flow.

Make sure hoses are plugged into tractor SCV or power beyond.

Verify correct location of pressure and return lines. A one way check valve is installed in the return line hose tip.

Set tractor SCV to continuous detent and flow.

Activate tractor SCV.

Low hydraulic pressure or flow to variable drive motors.

Maintain full tractor engine RPM.

Increase tractor SCV flow setting.

Minimize flow to other hydraulic functions.

Verify tractor hydraulic system performance.

OUO6074,000106E -19-24OCT08-4/15

No motor speed detected by variable drive controller.

Verify motor speed sensor electrical connection. Note: If this condition exists, the motor without any speed sensor feedback will rotate at a very high RPM for several seconds before a full page warning is issued.

Verify set screw in motor coupler is tightened to motor speed shaft.

Verify hydraulic valve electrical connection.

Mechanical binding causing high torque.

Wing to mainframe drive shaft couplers misaligned. Align drive shaft couplers.

Failed drive shaft support bearings. Replace failed bearings.

Misaligned seed meter or chemical hopper disconnects. Inspect and adjust seed meter and/or chemical hopper disconnects.

Identify and repair any other sources of mechanical binding.

A one hydraulic motor system is setup for two hydraulic motors.

Set number of hydraulic motors to one. (See ASSIGN MOTOR-ROWS, SPROCKETS, AND WIDTH DISCONNECT in SETUP Variable Rate Drive section.)

OUO6074,000106E -19-24OCT08-5/15

WARNING SCREEN: Motor 1,2 is operating at wrong speed.

NOTE: This warning occurs when the motor speed is less than 70 percent or greater than 120 percent of the correct motor speed for the selected population rate.

Proportional valve contaminated.

Perform hydraulic motor/valve flush. (See VRD MOTOR/VALVE FLUSH in Diagnostics section.)

Motors are not designed to operate less than 18 RPM. For motors to operate above 18 RPM, the ground speed must be above mph shown in Configuration Summary. The minimum ground speed varies depending on variable setup.

Operate planter above minimum ground speed.

Mechanical binding causing torque/speed fluctuations.

Loose chain on drive system causing chain to jump sprocket teeth. Tighten chain idler.

Misaligned chains causing chain to jump sprocket teeth. Align drive and driven sprockets. Align chain idler.

Wing to mainframe drive shaft couplers misaligned. Align drive shaft couplers.

Failed drive shaft support bearings. Replace failed bearings.

Misaligned seed meter and/or chemical hopper disconnects. Inspect and adjust seed meter and/or chemical hopper disconnects.

Identify and repair any other sources of mechanical binding.

OUO6074,000106E -19-24OCT08-6/15

Seed rate selection line appears black with white lettering.

Motor speed sensor detects no motion/motors are not turning.

Check connection to speed sensor.

Faulty motor speed sensor.

Replace motor speed sensor.

Seal blown in motor.

See your John Deere dealer.

Hose clamps on motor speed sensor coupler loose.

Tighten clamps.

Valve on hydraulic motor not getting any power.

Check connection to valve.

WARNING SCREEN: STOP. Power Interruption. Possible skip.

Power lost to controller.

Check connection of 30-way METRAPAK™ connector on controller.

Check 9-pin connector.

Check 3-pin convenience outlet connector.

See your John Deere dealer.

WARNING SCREEN: No Tractor Speed, Planter Moving.

The radar signal has been lost for a period of three seconds.

Verify radar connection.

OUO6074,000106E -19-24OCT08-7/15

WARNING SCREEN: Tractor/Planter Speed Error.

NOTE: This warning occurs when radar speed is significantly different from planter motion sensor speed.

Extremely windy, dusty conditions will give radar false readings and cause this warning.

Excessive wheel slippage on tire with motion sensor mounted to it, will cause this warning.

Faulty radar.

Verify radar connection.

Consult dealer or technical manual for further diagnostics.

Faulty motion sensor.

Verify motion sensor connection.

Verify motion sensor-to-disk clearance is 2-4 mm (0.08-0.16 in.) and wheel bearing is tight. Verify wheel is turning.

Consult dealer or technical manual for further diagnostics.

No row failed warnings from planter monitor when drive motors stop.

Normal condition for planter monitor not to issue row failed warning below two mph.

Operate planter above two mph.

OUO6074,000106E -19-24OCT08-8/15

Hydraulic motors do not turn or stop turning.

Normal condition when ground speed is less than one mph under all conditions/setup. Depending on variable drive setup, the minimum speed the system will function at may be higher. Note: Planter monitor will not provide row failure warning under 3 km/h (2 mph).

Operate planter at ground speeds greater than minimum ground speed.

A population of zero has been selected.

Population set rate must be greater than zero.

No hydraulic pressure or flow.

Make sure hoses are plugged into tractor SCV or power beyond.

Verify correct location of pressure and return lines. A one way check valve is installed in the return line hose tip.

Set tractor SCV to continuous detent/flow.

Activate tractor SCV.

Low hydraulic pressure/flow to variable drive motors.

Maintain full tractor engine RPM.

Increase tractor SCV flow setting.

Minimize flow to other hydraulic functions.

Verify tractor hydraulic system performance.

Height sensor not calibrated.

Calibrate height sensor. (See height sensor calibration in SETUP Variable Rate Drive section.)

OUO6074,000106E -19-24OCT08-9/15

Height sensor STOP position set too low (drawn machines).

Set height sensor STOP position at a frame height that allows the row unit opener blades to just touch the ground. If the stop position is set too low, the drive motors may turn on/off while planting due to wheel module float over rough ground conditions.

Height sensor bracket not adjusted to specification (integral machines).

Adjust height switches. (See ADJUST PARALLEL ARM HEIGHT SWITCH in SETUP Variable Rate Drive section.)

Planter motion sensor not active when planter is moving.

Verify motion sensor is active when planter is operating. (See VARIABLE RATE DRIVE COMPONENT ACTIVITY in Diagnostics section.)

Verify electrical connections to motion sensor.

Check 2 mm (0.08 in.) gap between motion sensor and tone wheel bolted to the wheel.

Wheel bearings may be loose or failed causing an increasing/decreasing gap on wheel motion sensor.

Mechanical binding causing high torque.

Wing to mainframe drive shaft couplers misaligned. Align drive shaft couplers.

Failed drive shaft support bearings. Replace failed bearings.

Misaligned seed meter and/or chemical hopper disconnects. Inspect and adjust seed meter and/or chemical hopper disconnects.

Identify and repair any other sources of mechanical binding.

OUO6074,000106E -19-24OCT08-10/15

Hydraulic motor(s) continue to turn when planter is raised.

Motor proportional valve stuck from hydraulic oil contamination.

Perform flush motor procedure.

Consult dealer or Technical Manual TM1601 for proportional valve cleaning procedure.

Replace hydraulic oil and oil filters in tractor.

Only one hydraulic motor of a two hydraulic motor system is turning.

Half width disconnect OPEN on either left or right side.

Close half width disconnect switch.

Variable drive setup for only one motor. This condition will only engage the right hand side of the machine.

Set number of hydraulic motors to two. (See ASSIGN MOTOR-ROWS, SPROCKETS, AND WIDTH DISCONNECT in SETUP Variable Rate Drive section.)

Motors turning backwards.

Full tractor pressure is being applied to the "T" port on the hydraulic valve manifold.

Plumb hydraulic lines so hydraulic pressure is applied to the port labeled "P".

Motor orientation on planter backwards.

See installation instructions for correct orientation.

Valve manifold orientation on motor backwards.

See installation instructions for correct orientation.

OUO6074,000106E -19-24OCT08-11/15

Hydraulic motors turn at an erratic speed.

Proportional valve contaminated.

Perform hydraulic motor/valve flush. (See VRD MOTOR/VALVE FLUSH in Diagnostics section.)

Low hydraulic pressure/flow to variable drive motors.

Maintain full tractor engine rpm.

Increase tractor SCV flow setting.

Minimize flow to other hydraulic functions.

Verify tractor hydraulic system performance.

Mechanical binding causing torque/speed fluctuations.

Loose chain on drive system causing chain to jump sprocket teeth. Tighten chain idler.

Misaligned chains causing chain to jump sprocket teeth. Align drive and driven sprockets. Align chain idler.

Wing to mainframe drive shaft couplers misaligned. Align drive shaft couplers.

Failed drive shaft support bearings. Replace failed bearings.

Misaligned seed meter and/or chemical hopper disconnects. Inspect and adjust seed meter and/or chemical hopper disconnects.

Identify and repair any other sources of mechanical binding.

Motors are not designed to operate less than 18 rpm. For motors to operate above 18 rpm, the ground speed must be above the minimum. The minimum ground speed varies depending on SETUP.

Operate planter above minimum ground speed.

OUO6074,000106E -19-24OCT08-12/15

When starting to plant from a stopped position, hydraulic motor(s) do not turn for a brief period. This creates a seeding gap in the field.

Normal operation to have an approximate 0.9 m (3 ft) seeding gap using Quick Start or a 9 m (10 ft) skip without Quick Start.

Lower planter a short distance ahead of where seed must reach the ground. This may require backing up, if planter is stopped in the middle of the field. Do not back up while planter is lowered.

NOTE: These approximate distances will be longer if seed is not loaded on the seed meter disk.

Use Quick Start feature to minimize skip.

Load seed on the seed meter disk prior to the start of productive seeding by lowering the planter into the DOWN position and driving forward with the vacuum on if required.

When using Quick Start, begin forward travel in a low gear to take off slower. By taking off slow and then shifting gear to speed up, the skip becomes smaller.

Many seeds on end of row when stopping abruptly.

VRD system requires a brief delay to shut off.

Start downshifting prior to end of row to reduce forward travel speed prior to stopping at end. This will allow VRD system more time to slow down and reduce the amount of seeds dropped at end when planter is stopped.

OUO6074,000106E -19-24OCT08-13/15

Set population does not match monitored population.

Vacuum set too low/high.

Adjust vacuum to appropriate level.

Problem with seed meter.

See operator manual for troubleshooting solutions.

Wrong seed disk selected in variable drive setup.

Enter correct seed disk or meter. (See VRD MACHINES-CONFIGURE METER, CROP, DISK, AND RATES in SETUP Seed Rates section.)

Wrong sprocket combination selected in variable drive setup.

Enter correct sprocket combination. (See ASSIGN MOTOR-ROWS, SPROCKETS, AND WIDTH DISCONNECT in SETUP Variable Rate Drive section.)

Wrong row spacing.

Enter correct row spacing. (See CONFIGURE FRAME, SPLIT ROW, AND DRIVE DISCONNECT WARNING in SETUP Basic Planter Configuration section.)

Wrong units of measure.

Enter correct units. (See CONFIGURE LANGUAGE AND UNITS OF MEASURE in Monitor Settings section.)

Wrong row unit type selected.

Select correct row unit type. (See SET METER TYPE AND ROW UNIT DRIVE TYPE in SETUP Variable Rate Drive section.)

Seed sensors can not count seeds passing through sensors at high rates.

Normal operation of planter monitor. (See POPULATION ADJUST in the SETUP Seed Rates section.)

Wrong seed population based on seed used/acre but selected rate and planter monitor agree.

Radar not calibrated.

Calibrate radar. (See RADAR CALIBRATION in Performance Monitor section.)

OUO6074,000106E -19-24OCT08-14/15

Calculated acres do not match actual acreage.

Machine width not correct in planter monitor setup.

Verify machine width. (See CONFIGURE FRAME, SPLIT ROW, AND DRIVE DISCONNECT WARNING in SETUP Basic Planter Configuration section.)

When row failed warning was issued, seed sensors were ignored and machine width reduced.

This is a normal planter monitor mode selected by the operator. This is a temporary condition that resets when ground speed is reduced below 3 km/h (2 mph) then increases above 3 km/h (2 mph).

Radar not calibrated.

Calibrate radar. (See RADAR CALIBRATION in Performance Monitor section.)

Radar speed displayed on GreenStar™ display different than tractor performance monitor/corner post display.

Either the GreenStar™ display or tractor performance monitor/corner post display not calibrated for radar.

Calibrate radar. (See RADAR CALIBRATION in Performance Monitor section.) See tractor operators manual to calibrate tractor performance monitor/corner post display.

OUO6074,000106E -19-24OCT08-15/15