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TSM DS 50-003/REV.C/031-300-190-003/04-20-07
DS50 TROUBLE SHOOTING MANUAL LEVEL 3
6. ADJUSTING OVERLOAD CUT OFF FACTOR
Problem:
A. The overload cut off for the actual length step is always too early - tested at a
high, mid and low boom angle.
B. The overload cut off for the actual length step is always too late - tested at a
high, mid and low boom angle.
Retract or extend the boom to the length step with the problem.
Pick a test load and carefully conduct a cut off test at a high boom
angle, mid boom angle and low boom angle. Calculate the cut off
percentage manually by using actual measured data for each of the
test. The allowable cut off percentage as per government specification
is 101% - 110%. You must be able to hoist up at 100% utilization but
cut off at latest 110% utilization. Ensure that you do not exceed those
two limits by adjusting the overload cut off factor. In example your cut off
is at 98%, 97%, 99% - increasing the cut off factor by 4% would enable
a new cut off at 102%, 101%, 103% which is acceptable. But if your cut
off is 98%, 106%, 103% - increasing by 5% would enable a new cut off
at 103%, 111%, 108% which does not meet the specification.
Connect the hand terminal as described in section 2.2.
Select the on-line mode as described in section 3.4.
Press the key >U< .
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