HS50_advance_level 2.pdf - 第159页
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07/2002 Edition Student Guide HS-50 Advanced II
6 Control & Communication
28
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It checks the ratio of the actual speed to the remaining braking distance. If the ratio becomes too
large then the servo enable signal is deactivated and the dynamic break activated (the corre-
sponding LED goes dark).
With help of the distance sensor we measure this speed to breaking distance ratio between the
two gantries. If the speed is too high according the distance to the other gantry all gantry axis ser-
vos are disabled by the anti crash board.
The travel range proximity switches (Bero), for X and Y-axis, measure this speed to breaking dis-
tance ratio referring to the limit switches or the bumpers. If the speed is to high in the area where
only one of "bero´s" is on this servo controller is disabled and dynamic break activated.
The proximity switches are connected to the axis controller as well as to the anti crash board. This
is necessary for the speed check.
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