© 2005 PAT GmbH · D-76275 Ettlingen · Hertzstr. 32 - 34 · ++49 (0) 7243 709-0 · FAX ++49 (0) 7243 709-222 · Email: pat.ettlingen@pat-group.net 23
24 160 19_0106E_Rev D.doc / 2005-06-27 / rk.
11. LOAD READING PROBLEM
Measure radius and check with the displayed radius.
Check boom length reading on display.
PROBLEM: Load reading incorrect. START
Reset length potentiometer. With fully retracted boom, turn potentiometer axle
counter-clockwise until it stops . Refer to system wiring diagram and sensor
adjustment procedure.
Check power supply in the central unit between:
X1:37 (+UBV) and X1:36 (ground) for piston side
and rod side pressure transducers.
Refer to system wiring diagram.
Check if mechanical adjustment of angle transducer is correct. Angle transducer
box should be in line with boom and adjusted to actual boom angle.
Refer to system wiring diagram and sensor adjustment procedure.
Check power supply to pressure transducers (piston and rod side). Check each transducer by
unplugging the transducer cable from transducer. Measure voltage at the cable connection
between A (+12/24v) and C (ground) at each connector.
Refer to system wiring diagram.
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Correct?
Correct?
NO
YES
Correct?
NO
YES
YES
NO
Fault in pressure transducer cable.
Refer to system wiring diagram.
Correct?
YES
NO
Main board defective. Replace main board.
Refer to system wiring diagram and main board
replacement procedure.
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