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ALARM CODE 11 :
BOOM LENGTH TRANSDUCER READING
LOWER THAN THE MINIMUM VALUE(*)
CAUSE:
The signal from the boom length transducer to the main PC board is lower
than the minimum programmed value.
This can be produced by a short-circuit in the electrical wiring, between the
Main Unit and Sensor or the sensor itself is in interdiction.
ACTION TO TAKE:
• Verify the cabling.
Verify cable reel PC board proper power supply
(refer to “CABLE REEL POWER SUPPLY VERIFYING” section – page 30).
• Verify length potentiometer
(refer to “EXTENSION POTENTIOMETER VERIFYING” section - page 31).
ALARM CODE 21 :
BOOM LENGTH TRANSDUCER READING
HIGHER THAN THE MAXIMUM VALUE (*)
CAUSE:
The signal from the boom length transducer to the main PC board is higher
than the maximum programmed value.
This can be produced by a short-circuit in the electrical wiring, between the
Main Unit and Sensor or the sensor itself is in saturation.
.
ACTION TO TAKE:
• Verify the cabling.
• Verify cable reel PC board proper power supply
(refer to “CABLE REEL POWER SUPPLY VERIFYING” section – page 30).
• Verify length potentiometer
(refer to “EXTENSION POTENTIOMETER VERIFYING” section - page 31).
(*) NOTE: Main Unit Processor identifies below and over the signal range a
minimum zone and a maximum zone in order to check the sensor.
