Troubleshooting; Fault Diagnostics - Fault Rectification - Polaris DP-20 User Manual

Fault Diagnostics – Fault Rectification
An incorrect setting on the DP-20 is often the cause of incorrect or undesirable guiding
characteristics. Faults and the procedures for rectifying the faults are described below.
Fault Description
Actuator does not
move in Automatic
mode.
Actuator is unstable
in Automatic mode.
Actuator moves the
wrong direction in
Automatic mode.
Actuator does not
move in Servo-
Center mode.
Actuator is unstable
in Servo-Center
mode.
Actuator moves to
either end of the
stroke in Servo-
Center mode.
06-05-2007
DP-20 WEB GUIDE CONTROLLER USER MANUAL
Probable Cause
System Gain set Increase the System
too low. Gain.
System Gain set Decrease the
too high. System Gain.
or
Cable connectors Tighten all cable
are loose. connectors.
Guide Polarity is Change Guide
set incorrectly. Polarity.
or
Incorrect sensor Select MANUAL
mode selected. mode, then verify the
correct sensor mode
is selected. If
necessary, press the
SENSOR key to
select the correct
sensor mode.
Servo-Center Gain Increase the Servo-
is set too low. Center Gain.
Servo-Center Gain Decrease the Servo-
is set too high. Center Gain.
Servo-Center Change the Servo-
Polarity is set Center Polarity.
incorrectly.
DP-20 WEB GUIDE CONTROLLER
9

TROUBLESHOOTING

Remedy
1X.1, System Gain
or
System Gain
1X.1, System Gain
or
System Gain
3X.1.3, Guide Polarity
2X.1, Servo-Center Gain or
3X.1.6, Servo-Center Gain
2X.1, Servo-Center Gain or
3X.1.6, Servo-Center Gain
3X.1.7, Servo-Center
Polarity
9
9-1
Reference
3X.1.1,
3X.1.1,
Figure Sheet 1-862-D