SI 675
Issue B
EDI 8262
Telescopic cranes with derrick pressure sensors CALIBRATION W2245
19
Press ENTER (#1) to zero and press ENTER again to confirm.
4.2.6.2 Span Angle
Scroll down to «3 -SPAN ANGLE» and press ENTER (#1).
Boom up over 65 degrees (main boom referred to ground). The display
will show, the angle (in degrees) calculated by the system in the upper
right corner. On the bottom line the display will show the signal in bits.
Press ENTER to ‘free’ the angle value (it will flash) and use the set
buttons (#2 and #4 ) to adjust the displayed value. When correct, press
ENTER (#1) to request calibration, press ENTER again to confirm.
4.2.7 - LENGTH SENSOR CALIBRATION
4.2.7.1 Zero Extension
Scroll down to «4-Zero Extension» and press ENTER (#1).
Retract the boom fully. The display will show on the upper right corner
the signal in bits. This must be above 50 and around 100 bits.
Press ENTER (#1) to zero and ENTER again to confirm.
Measure the boom length from foot pin to head sheave pin. Keep this
measurement. You will need it for the span calibration.
4.2.7.2 Span Extension
Scroll down to «5-SPAN EXTENSION» and press ENTER (#1).
Extend fully and measure the boom length, subtract the retracted boom
length from the extended, the result is the extension. This is the value
you need to calibrate. The display will show the extension value
calculated by the system in the upper right corner and the signal in bits
on the bottom line. The system needs a minimum span of 150 bits
above the zero.
Calib:#2
↑
- #4
↓
4 – Zero Extension
Calib:#2
↑
- #4
↓
3 – Span Angle
Calib:#2
↑
- #4
↓
5 – Span Extension
