Use and Maintenance Manual – 08/2018 Rel. 3
Page 62
21.5.2 SWI procedure at low speed
In the low speed SWI procedure, the wheel has already run the launch and is stationary. If the operator presses [P8] key Start
with the wheel guard raised, the machine will apply slight acceleration to the wheel and then let it spin by inertia. When the speed
is low enough, the machine will wait until the wheel passes through one of the angular positions of imbalance, therefore, it will
enable the electromagnetic clamping brake.
Note: for operator safety purposes, the SWI procedure will not be run when the MOTO Wheel Type is enabled.
21.5.3 Manual SWI procedure
In this mode, the SWI procedure is activated by manual rotation of the wheel if the wheel guard is raised. When the wheel passes
through an angular position of imbalance, the machine will enable the electromagnetic clamping brake.
Angular positioning accuracy depends on many factors. The main ones being: wheel dimensions and weight, electromagnetic brake
adjustment, temperature, belt tension. In all cases, consider the following:
•
If the electromagnetic clamping brake is disabled, the SWI procedure will not be run in any of three modes;
•
If rotation speed decreases abruptly due to wheel inertia during the automatic SWI procedure or the low speed SWI (e.g.
due to excessive friction with rotating mechanical parts) the machine applies a little extra acceleration to the wheel itself
in order to reach the first angular position of imbalance. If, despite this, the wheel does not reach this position, the SWI
procedure is aborted after 5 seconds and the machine displays the error code
ERR 042
;
•
When using the manual SWI procedure, precision also depends on the speed that the operator turns the wheel at:
excessively high or low speeds reduce precision.
