28/46
The duration mode of ‘Centring’ is called ‘Maximum limit’ and corresponds to the upper limit
of the vibration duration in this mode. Hence, the user limits the computed vibration duration
by entering a value in ms in the box. This is useful if your application engages a time
constraint that must be respected. If there is no special constraint, keep the default value of
10 seconds.
IMPORTANT NOTE:
It is IMPORTANT to set the vibration duration as the time the parts need to completely
cross the platform in a given direction. The effectiveness of the ‘Centring' smart vibration
and ‘Vibration ratio’ duration mode depends on well-adjusted parameters.
6.3.2. ‘Quantity adjusted’
The ‘quantity adjusted’ duration mode can be combined with hopper vibrations/output
activations or platform vibrations. This mode is mainly used for feeding new parts on the
picking zone. As is the case for the other smart vibration, the ‘quantity adjusted’ duration
mode is based on the data from a vision system (number of parts detected on the picking
zone).
The value entered in the dialogue box (in ms) corresponds to the vibration duration when
there are no parts on the platform. The more parts are detected, the less time the vibration
takes and when the upper limit of parts on the platform is reached, the vibration duration
decreases to zero. In between, the vibration duration is linearly interpolated. Note that the
user has to indicate the upper limit of parts in the dialogue box that appears when using
‘quantity adjusted’. This dialogue box is located after the seventh action.
Example:
Let's suppose that the upper limit of parts on the platform for the vibration is defined at 40
and the vibration duration entered in the box is 1000 ms. In the first case, no part is present
on the platform, the effective vibration duration is 1000 ms. In a second case where 20 parts
are detected on the platform, the effective vibration duration will be 500 ms. In the case
where 30 parts are detected on the platform, the effective vibration duration will be 250 ms.
When 40 or more parts are detected, there will be no further vibration.
To Next Page
Loading...
Need help?
General
