55M3500MNE rev. E
Telescopic cranes with derrick pressure sensors Calibration Manual i3500
32
a fixed length other than maximum (e.g. pinned) use
“
” or “
” to edit this number to
the required value. Use
“
“ to confirm the maximum length to be calibrated for this
duty.
The display now shows:
Number of Length Steps = xx
The number of points selected will directly affect the calibration time and eventual
system performance. More points mean a longer calibration sequence but with
improved performance. As a guide select the number of points from the following table
but note that these figures are intended as a minimum requirement and can be
increased as required (up to a maximum of 7) to enable calibration lengths to coincide
with rated boom lengths. This number of points includes the shortest and longest
lengths for the duty, which are mandatory.
Telescopic band to be
calibrated
Minimum of points
None
2 (min)
Up to 20 feet
3
20 to 30 feet
4
30 to 45 feet
5
45 to 60 feet
6
Over 60 feet
7 (max)
When the proper number of length steps is entered, press
“
“ to accept
If more than two lengths have been entered the display now shows:
Length 2 = xxx.x
Where
xxx.x is the second calibration length to be specified.
The first and last lengths will automatically be set to the minimum and maximum values
specified for calibration and other calibration lengths will default to evenly distributed
lengths calculated by the system.
Use
“
” or “
” to change the default value of xxx.x to the boom length required for
calibration length 2, if required, then press
“
” to accept.
Specified lengths should coincide with rated boom lengths where possible although not
all rated boom lengths need be specified. Specified lengths must include lengths at
which the boom telescoping sequence changes. Where no intermediate boom lengths
are shown in the crane capacity chart, use the default lengths chosen by the system.
