Chapter D
Chapter DAdjustment mode
164
W301-0411E
2.6.1 Moment Zero Adjustment
- Fully retract the boom, and lower the boom to the specified boom angle.
- With no load (Main hook block only), set the hook to the twoblocking status.
- In the LCD (Fig. 2.6.1), press the <
> key (backward) or the < > key (forward) until both of "Wa" and
"Zero" become highlighted.
Wa 0.33 t
F 0.435 mV
Zero 0.000 → 0.000_
Span 3.000 → 3.000
Wa: Actual hoist medium load F: Distortion voltage
(converted from an elevating cylinder’s both side pressure)
- Operate the <
> key (-) and the < > key (+) so that the displayed actual hoist medium load(Wa) becomes
the adjustment value. (The distortion voltage to be corrected changes.)
When the actual hoist medium load (Wa) becomes the adjustment value, press the <
> key to register the
adjustment value.
2.6.2 Moment Span Preliminary / Load Radius Adjustment
- Fully extend the boom.
Lift the rated capacity (Max. Hoist medium load) for boom full extension, and lower the boom to set
to the maximum load radius for the lifted load.
- In the LCD (Fig. 2.6.1), press the <
> key (backward) or the < > key (forward) until both of "Wa" and
"Span" become highlighted.
Moment 99.4%
Radius 6.78 m K=1.00
Wa 7.98 t_
F 2.235 mV Zero 0.000 → 0.000
Span 3.000 → 3.000_
Wa: Actual hoist medium load F: Distortion voltage
(converted from an elevating cylinder’s both side pressure)
- Operate the <
> key (-) and the < > key (+) so that the displayed moment becomes to 100.0±1.0%
(changes the distortion voltage to be corrected).
Input distortion at zero adjustment → Distortion voltage to be corrected
Input distortion at span adjustment → Distortion voltage to be corrected
Moment display
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