55M3500MNE rev. E
Telescopic cranes with derrick pressure sensors Calibration Manual i3500
40
Ensure the current duty selection matches the actual crane configuration being used for
the calibration. Scroll through the calibration menu using
“
” or “
” to highlight the
field “- load offset”, press
“
” to confirm the choice.
2.2.10.12
Friction compensation
This procedure should not be performed except under guidance from RaycoWylie
Systems except for
down friction. All of the factors in this menu, except down friction,
are used to compensate for static pressure decay over time but significant testing and
analysis may be required before any of these default values are modified.
The default screens are shown below for reference:
wear factor
down friction
pres. offset low(bar)
pres. offset med(bar)
pres. offset hig(bar)
stab.coef.ptimelow
1.00
0.00
0.0
0.0
0.0
1
stab.coef.ptimemed
stab.coef.ptimehig
boom down pwr low(%)
boom down pwr med(%)
boom down pwr hig(%)
inf. lim. pres.med-bar
1
1
100
100
100
0.0
sup. lim. pres.med-bar
0.0
Boom down friction compensation should only be done once the no load calibration and
various deflection calibrations have been completed. Only one boom down friction
compensation value is available and it will affect all configurations of the machine.
The down friction factor is best established by trial and error. Navigate through the
calibration menu using
“
” or “
” to highlight the field “- friction compensation”, press
“
” to confirm the choice. Scroll down to “- down friction” and press “
” to highlight
the value for editing, To start, increase the default value from 0.00 to 0.10 and press
“
” to confirm. Exit the calibration mode and retest the boom down performance to
establish the effect, return to the down friction calibration and modify as required.
2.2.10.13
Load correction
This procedure is optional and a separate calibration is available for each crane
configuration that also has an individual no load calibration. It is used to add an
allowance into the calculation of the hook load to compensate for a potential build up of
minor errors in either fixed data or previous calibration data.
