Pid on constant torque on axis 2 of 7344

[jdavis01]

I am currently driving a servo on axis 1 of the 7344 in velocity mode that is attached to a spool of line. I want to take the Quadrature encoder of spool and feed it to axis 2 with no servo and pid on tensison for torque that feeds back to axis 1 Possible?

[algames]

Yes, it is possible to do this in the follwoing way. On axis 1 you will use the Axis Configuration panel in MAX for Axis 1 to set the primary feedback of the axis to ADC 1. Use the ADC Settings panel to set the range of ADC 1 to the range of your tension sensor (bear in mind you might need to apply conditioning to the sesnor if it is not within the 0-5, +/-5, 0/10 or +/-10v range). Once done, make sure that the encoder input you have connected the spool encoder to is configured a the feedback for axis 2. All that you will be left to do is tune your system and be up and running. Please refer to the following documents for more information:

http://zone.ni.com/devzone/conceptd.nsf/webmain/081957EE013C7A4586256B92007818E0?opendocument



http://zone.ni.com/devzone/con
ceptd.nsf/webmain/4B7775373E4AE64986256B6000691505?opendocument