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W301-0411E
Chapter B Chapter B
User Mode
7.4 Winch Drum Position Selection Function
NOTIC
The crane operations other than those shown in the illustrations below are prohibited.
Use the specified combinations only.
(A) When boom lift or S/T lift or Jib lift is registered following conditions, Main winch should be selected.
(Memorized in the AML with Main winch used.)
(B) When S/T lift or Jib lift status is registered following conditions, should be selected Aux. winch (front side
used by user preset menu). Then, subtract the mass of the main hook from the Rated Capacity, gives actual
hoist medium road.
7.4.1 Function
For the machine whose performance is determined on the assumption that the only main winch (drum position:
front
1) is employed. Use the winch position selection function if both of main and auxiliary winches (drum
position: front and rear
2) are used.
Select the winch position according to the crane operation status to decrease a lifting capacity reduction
(decrease a back moment by Aux. winch wire rope tension due to loosing the distance from the boom pivot pin).
(
1) Spec. selection flag differs according to #17200-96.
(
2) Spec. selection flag corresponding to setting of front/rear winch selection differs depending on #17200-96.
When the flag indicates " Front āā Front/rear (1), the main winch is in front and the aux. winch is in rear.
Fig. 7.7.1
Fig. 7.7.2
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