Chapter D
Chapter D
Adjustment mode
163
W301-0411E
2.6 Moment / Load Radius Adjustment
Perform the moment adjustment / load radius adjustment according to the description below.
Measurement condition: 1. Perform all the adjustments with the outrigger becomes fully extended.
2. The number of part-lines shall be the standard number of part-lines for boom
full extension.
- Select the moment adjustment of Adjustment main menu
- Moment zero adjustment
- Moment span preliminary adjustment / load radius adjustment
- Moment span adjustment
- Moment zero check
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. 2.6.1.
Fig. 2.6.1 Moment adjustment screen
Note:
- 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 lift state < > 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 lift state < > is pressed again, the status returns to the normal control.
K: Deflection coefficient adjustment
multiplication
Wa: Actual hoist medium 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
