Servo Controller integrates programmable limit switch.

Press Release Summary:



Delivering servo control of NEMA 17 and 23 frame microstep motors, SilverDust(TM) controller/driver features Programmable Limit Switch (PLS) output that can be configured to use any of the available 23 I/O to change states at over 150 pre-defined trigger points. A modulo may be selected to repeat cycle. Output triggering, trigger point values, and number of trigger points can be changed even while PLS command is running in background.



Original Press Release:



Programmable Limit Switch Added to Servo Controller



Quicksilver Controls, Inc., adds a Programmable Limit Switch (PLS) output to its SilverDust(TM) 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 (i.e. high to low or low to high) at more than 150 pre-defined trigger points. 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's firing sequence for each part coming down the assembly line.

For more details, see the application note QCI-AN050 Programmable Limit Switch on Quicksilver's website (www.QuickSilverControls.com).

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