Great Plains
| 118-732M | 4/4/19
102
1510P & 1520P
Veris Drive Operating Instructions
f.
Excessive torque in drive system. Disconnect
main drive chain to check for rotation under
zero load. Check for a problem with the
mechanical portion of drive, such as foreign
material wedged in meter, frozen bearings,
misaligned chains, or swelled grain in meter.
Install pressure gauge at motor inlet. Pressure
should be 1000-1500 psi. If pressure is above
2000 psi, significant torque problems are
present.
DANGER: RAPID DRIVE ROTATION MAY OCCUR AND
CAUSE SERIOUS INJURY. KEEP CLEAR OF DRIVE AREA
Check Speed signal (if drive rotates in calibration
mode but not when planting):
a.
No signal from speed sensor - check
connection at sensor and at drive controller.
b.
Excessive gap between wheel sensor and
sensor plate - readjust to .030.
c.
Use Speed Simulator (P/N #27858) to
troubleshoot speed loop. Leave tractor
stationary and drive hydraulics do not need to
be engaged.
d.
Test speed sensor and hall effect sensor;
replace sensor if simulated speed appears on
cab console.
e.
Test speed cable between speed sensor and
hall effect module; replace cable if simulated
speed appears on cab console.
Test hall effect module and cable to external controller;
replace module and cable if simulated speed appears
on cab console. If speed does not appear with speed
simulator, external controller or chip may need
replacement. Call Service Department.
Drive rotates but at desired speed:
Drive (out rate) fluctuating erratically:
•
If indicated field speed on drive is also
fluctuating erratically, troubleshoot speed signal
loop.
•
If field speed is steady, check for loose set
screws on motor encoder, contamination of
proportional valve, or mechanical binding of
chain on row unit.
Indicated speed fluctuating erratically:
a.
Use speed simulator to troubleshoot speed
loop. Leave tractor stationary and drive
hydraulics do not need to be engaged. If steady
speed between 4-10 mph appears on cab
console using speed simulator, troubleshoot
radar, wheel pickup sensor, hall effect module.
If steady speed does not appear with speed
simulator, external controller may need
replacement. Call Service Department.
b.
Check radar gun angle.
c.
Check gap between wheel sensor and pickup
plate.
