Great Plains 3N-4020 Operator Manual - Manual (Page 99)

Great Plains Manufacturing, Inc. Table of Contents Index Troubleshooting 95
2013-10-29 Table of Contents Index 196-359M
Calibration Troubleshooting:
If the time to run for calibration is less than 4 seconds,
the cab console will display TIME TOO LOW.
Pressing the FUNCTION button will bring up the ENTER
TARGET AMOUNT screen. The target should be raised
to increase the calibration time. If the time is greater than
255 seconds, the cab console will display TIME TOO
HIGH. Pressing the FUNCTION button will bring up the
ENTER TARGET AMOUNT screen. The target should be
lowered to decrease the calibration time.
If modest adjustments to the sample size continue to
result in HIGH/LOW errors, chances are some other
parameter is zero or incorrect by a large factor (such as
decimal place error). To start over, press OFF, and then
ON.
While rate calibration is running, one of four error mes-
sages may be displayed:
Message Cause Solution
COMM
TIMEOUT Power to or com-
munication with
the external con-
troller was inter-
rupted during
calibration. Check power
and communica-
tion connections
from the cab
console to the
external control-
ler and rerun cal-
ibration.
TIME
OVER
LIMIT The external con-
troller module ran
too long in calibra-
tion. Rerun calibra-
tion. If the same
message
appears, call
technical sup-
port.
USER
TERMINATED The ENGAGE but-
ton was pressed
during calibration. Rerun calibra-
tion.
CALIBRATE
ERROR The drive did not
turn when calibra-
tion began. Check encoder
cable and con-
nection, solenoid
cable and con-
nection, and
hydraulic lever
position.