Elliott Digger Derrick - WAD;ISS Troubleshooting Table; Replacing the Swing Sensor

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W450321A 09/12
7.2 WAD/ISS Troubleshooting Table
Error Message / Problem
Cause
Correction
“SWING SENSOR SIGNAL 1
ERROR!”
“SWING SENSOR SIGNAL 2
ERROR!”
“SWING SENSOR ERROR!”
“SWING SENSOR LOGIC
REPORT!”
Cable from sensor to condition box
disconnected.
Cable from sensor to conditiong box
grounded.
Replace sensor.
“SWING SENSOR COMMS
ERROR!”
Cable from condiiton box to computer
disconnected at computer or conditiong
box.
Cable from condition box to computer
grounded.
Check cable.
Check connection at
conditiong box and computer.
Replace cable.
If display shows load, angle,
radius, etc, replace the
conditioning box.
Intermittent, inaccurate, or no output
activity
WAD/ISS too far from target within
swing drive.
WAD/ISS sensor too close to target
within swing drive.
WAD/ISS not responding normally but
drawing normal current and providing
normal outputs.
WAD/ISS disconnected from computer.
Check sensor and sensor
connection.
7.3 Replacing the Swing Sensor
7.3.1 Swing Sensor Removal
1. Place the boom in the rest (stowed position).
2. Turn off the power to the crane.
3. Disconnect the sensor cable from the conditioning box.
4. Loosen the sensor retaining nut.
5. Remove the sensor from the swing drive housing.