![background image](http://html1.mh-extra.com/html/dannmar/b-200/b-200_installation-and-user-manual_3431447037.webp)
Pag
e
35
18.5 Wheel stop procedure on the positions of imbalance
Machines equipped with the electromagnetic clamping brake are capable of automatically stopping the wheel at the first
imbalance angular position that is reached during rotation. This allows the operator to have the wheel in position ready for the
application of the balancing weight thus increasing work and productivity speeds.
Table T18.2: Types of wheel stop procedures available
SWI mode
When it is or when it can be run
Who can run
the procedure
Notes
Automatic
At the end of every launch.
Machine
This is performed only if there is at least one
imbalance value on the wheel. Otherwise,
conventional braking will occur.
Low speed
At the end of the launch, when
the wheel is stationary and the
wheel guard is raised.
Operator
Procedure started by pressing [8] key Start: the
wheel starts spinning at low speed until the first
angular position of imbalance is reached.
Manual
At the end of the launch by
manually rotating the wheel with
wheel guard raised.
Operator
At each passage of the wheel in an angular position
of imbalance, the electromagnetic clamping brake
will be enabled for 30 seconds.
18.5.1 Automatic wheel stop procedure
During the automatic wheel stop procedure, the machine will measure rotational speed during braking at completion of the launch
and, when this reaches a predetermined value, it will release the brake allowing the wheel to spin freely 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 wheel stop procedure will not be run when the MOTO Wheel Type is enabled.
18.5.2 Wheel stop procedure at low speed
In the low speed wheel stop procedure, the wheel has already run the launch and is stationary. If the operator presses [8] 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 wheel stop procedure will not be run when the MOTO Wheel Type is enabled.
18.5.3 Manual wheel stop procedure
In this mode, the wheel stop 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. Among the most important, they are: wheel dimensions and weight,
adjustment of the electromagnetic brake, temperature, belt tension. In all cases, consider the following:
If the electromagnetic clamping brake is disabled, the wheel stop procedure will not be run in any of three modes;
If rotation speed decreases abruptly due to wheel inertia during the automatic wheel stop procedure or the low speed
wheel stop (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 wheel stop procedure is aborted after 5 seconds and the machine displays the error code
ERR 042
;
When you use the manual wheel stop procedure, balancing precision will also depend on the speed with which the
operator rotates the wheel: excessively high or low speeds reduce accuracy.