Service Manual iFLEX5
© Hirschmann Rev. I 0522/17 190154_I.DOC
8 SLEWING SENSING
The system measures the slewing (rotational position) of the crane’s upper with a slewing sensor. The
slewing sensor is contained within the slip ring assembly.
Block Diagram
The slew potentiometer has two potentiometers built in that are driven by the slip ring axle. As the
slewing angle changes, so will the axle and with it the potentiometer’s outputs. Use the display screen
by pressing ‘i’ (info) twice to show all sensor inputs.
The table to the right show measured millivolt reading for
the slew potentiotmeter.
0
500
1000
1500
2000
2500
3000
3500
4000
0 45 90 135 180 225 270 315 360
Potentiometer 1
Potentiometer 2
0 45 90 135 180 -135 -90 -45 0
Slew
Potentiomet
er with (2)
outputs
Modular Slew Pot - Voltage on Service Screen
Display screen
for sensor inputs