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Messages - Tim_Law

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Technical support / Re: Stepper Motor Help
« on: June 09, 2003, 02:14:14 AM »
Thank you for your fast response.
The analogue proximity sensor we are considering has a 0 to 10v DC voltage output which we were hoping could be connected into the Analogue input of the PLC for position feedback, is this possible at our speed of operation.
If this is not possible the Digital encoder feedback you mention above would be an option.
could you let us have details of the following:-
            - scan time
            - time for one instruction
            - sampling rate of analogue input
            - time for one line of progam

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Technical support / Stepper Motor Help
« on: June 06, 2003, 01:21:55 AM »
We are hoping to use an m series PLC to control a stepper motor for positioning and incorporate an analogue proximity switch to detect any failed steps or moves.
Ideally we need a 1.8degree stepper to move 50steps (90degrees) in 60 to 100milliseconds.  Does this sound likely taking PLC scan times into account.
We are considering DPM or Sanyo steppers and Drives, any other cheap suggestions welcome.

3
Technical support / 'S' Curve accelleration of Stepper Motors
« on: August 29, 2003, 10:39:08 AM »
Thanks for previous help on Steppers.
We are now trying to run stepper fast, 70 full steps in 50 milliseconds then -70 steps in the next 50 milliseconds repeating cycle continuously.    Is it possible to have an 's' shaped accel/deccel profile using Tbasic, as we think this may help our application.

thanks

Tim

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