29
TSM DS 50-003/REV.C/031-300-190-003/04-20-07
DS50 TROUBLE SHOOTING MANUAL LEVEL 3
9. ADJUSTING LOAD DISPLAY
Problem:
Load indication too high or too low.
Retract or extend the boom to the length step with the problem.
-Actual boom length must agree with the length step (LS) on the hand terminal display-.
Hoist a known test load. The test load shall be = or > 75% of the rated capacity. Refer to the
crane load chart. Hoist the load just above the ground and read the load display on the hand
terminal. Compare the displayed load with the actual load. Calculate the difference between
the actual load and the displayed load on the hand terminal.
Connect the hand terminal as described in section 2.2.
Select the on-line mode as described in section 3.4.
Press the key >V< .
The terminal display indicates >C-LOAD I= n: <. or >C-LOAD x= n: <
Note: n = previously entered correction factor. x= a number between 1 and 7.
A load correction value can be entered and stored for the following boom angles(degree).
60..50...40...30...20...10...0
These correspond on the hand terminal display to >C-LOAD 1,............C-LOAD 7<.
If the boom is positioned between two of those angles during the initial start of the >V< function
the hand terminal displays >C-LOAD I = n: <.
Enter the calculated or estimated load correction factor in (% x 100) for the initial starting angle.
Note: If the address has already a data you must either subtract or add your calculated correction
factor. In example >C-LOAD I= -200< -- with a calculated correction factor of -- 4% enter
>C-LOAD I= -600<. Note: The correction value is limited to +/- 1000 = +/- 10%.
The program extrapolates the entry and writes the calculated values into the next stored angles
continue on
next page
