Chapter D
D-3
Adjustment mode
Chapter D
Moment / Load Radius Adjustment
Perform the moment adjustment / load radius adjustment according to the description below. - Select the moment adjustment of Adjustment main menu - Moment zero adjustment - Moment span preliminary adjustment / load radius adjustment - Moment span adjustment - Moment zero check Measurement condition: 1. Perform all the adjustments with the outrigger become fully extended. 2. The number of part-lines shall be the standard number of part-lines for boom full extension. When "Moment Adjustment" is selected in the adjustment main menu of Fig. 1.3.3, the detector adjustment screen appears on the LCD as shown in Fig. 3.1.1.
K: Deflection coefficient adjustment multiplication Wa: Actual load F: Distortion voltage (converted from elevate cylinder’s both side pressure) Zero: Input distortion at zero adjustment → Distortion voltage to be corrected Span: Input distortion at span adjustment → Distortion voltage to be corrected
Fig. 3.1.1 Moment adjustment screen
[NOTICE] With the moment adjustment, be sure to set the boom angle by the boom lowering operation, and always wait until the distortion voltage becomes stable before starting the adjustment. Under the moment adjustment status, pressing the check < > key performs the compulsory unload output. During compulsory unload output, the buzzer of display control section is sounded intermittently with a long duration to notify that the compulsory unload output is in progress. During this period, the distortion voltage can be stabilized quickly when the boom lowering operation is performed. When the check < > key is pressed again, the status returns to the normal control.
Revised Oct. 2015
D - 18
W301-0481E
