Digga PDD - Page 58

58 PM-000251 - Operator’s Manual - PDD-PD50 - June 2022
Main function
The Halo alignment system measures the angle of the drive with respect to plumb. With this measurement, the Halo
displays a sequence of colours on a circular LED array that is visible to the machine operator. The LED array changes
colour with the angle of the drive, showing ‘all green’ when very close to plumb (within 1.5°). When the drive is slightly off
plumb (by more than 1.5°) the LEDs will change from all green to partially green and red, showing the operator which way
to manoeuvre the drive to return to plumb. The operator should move their machine in the direction of the green portion of
the LED array.
When the drive is hanging free when the machine is not operational, the LED sequence may appear to be incorrect or
‘backwards’ when tilting the drive about the hitch. It’s not until the drive pivots about the end of the auger/pile that the
Halo system will make sense to the operator.
Start-up
Make sure the auger drive is hitched and hanging approx. plumb before connecting the power supply. After connecting
the power supply, the auger drive with Halo must be still (not moving) for 30 seconds. During this time you may notice the
lights moving even though the drive is still. After 30 seconds, the Halo will have nished the start-up calibration will be
showing the correct LED sequences.
Powering the Halo
The Halo system is offered with a variety of power options. The basic version of the Halo is powered by the 12V/24V
auxiliary power from the cab (otherwise known as a cigarette socket). The basic version does not include any ‘zero’
capability or data capability. The Halo can also be powered by a custom built magnetic battery which also features a ‘zero’
switch for drilling at angles and to increase accuracy for piling applications. The Halo battery can be connected to the
system at the boom or in the cab via any combination of Halo extension cables.
Limitations
The Halo uses 6-way sensor fusion to measure the orientation of the drive. Because there is a certain amount of
mechanical play between the auger/pile and the drive itself, the operator should be aware of this limitation and that the
Halo LED array is displaying the orientation of the drive, not the auger/pile.