Product category:
Positioners, servo drives
News Release from: QuickSilver Controls | Subject: SilverDust
Edited by the Processingtalk Editorial
Team on 18 November 2005
Limit switch added to servo controller
QuickSilver Controls adds a programmable limit switch output to its SilverDust controller/driver for servo control of NEMA 17 and 23 frame microstep motors
QuickSilver Controls adds a programmable limit switch output to its SilverDust controller/driver for servo control of NEMA 17 and 23 frame microstep motors The PLS command can be configured to use any of the motion controller's possible 23 I/O to change states (ie high to low or low to high) at more than 150 pre-defined trigger points
This article was originally published on Processingtalk on 27 Jun 2005 at 8.00am (UK)
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A modulo may be selected to repeat the cycle.
The controller compares the stepmotor position with the trigger position every 120 microseconds.
When the trigger point is reached, the state of the I/O toggles automatically and the PLS command starts looking for the next trigger point.
Output triggering, trigger point values and number of trigger points may be changed dynamically even while the PLS command is running in the background.
In factory automation, this could be used to change an output firing sequence for each part coming down the assembly line.
For more details, see the application note QCI-AN050 Programmable Limit Switch on the QuickSilver website.
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