Yaskawa Sigma V

[ChrisInMotion]

Needing the interface circuitry to interconnect an NI 7342 PCI card to a Yaskawa SGDV, Sigma-V servo-amplifier.  A suggested pin-to-pin would be a start, however, am uncertain as to pull-ups, buffers, feed-throughs, etc., needed to interface successfully

[Brian_Beal]

I am assuming that you have the Analog/Pulse+Direction version of the Sigma-5, and not the Mechatrolink version.  The manual shows the pinouts for the CN1 connector.  You will want to wire the alarm out, and enable in, as well the simulated encoder out and the pulse and direction in.  The Sigma-5 CN1 pinouts are the same as the Sigma-2 CN1 pinouts.  By the way, if you want to bypass the motion controller, you could get the Mechatrolink version of the Sigma-5 and a Mechatrolink card for your PC.  Labview drivers are free from Yaskawa.

[Brian_Beal]

I just realized that the 7342 can do servo control also, so you can use the analog out from the controller to run the drive in torque or velocity mode.  If you run the Sigma-5 in position mode, though, you can take advantage of the advanced tuning features of the Sigma-5.

[ChrisInMotion]

Brian,

Thanks for your posts.

NI offers a specific interconnection board for interfacing their 7390 to Yaskawa Sigma-II servo amplifiers.  They don't have any product for interconnecting  their 7342 to a Yaskawa Sigma-V. (yet)  Therefore, I had to buy NI's screw-terminal interconnection board.  I am not certain the connections will all be simple wire-to-wire connections.  NI has chosen not to share their schematic of the interconnection board for the 7390/Sigma-II product with me.  It leads me to believe there must be more to it than simple wire-to-wire interconnectivity - otherwise they'd say-so.  I now have enough information to map the 7342 to Sigma-V signals - I just don't know what interfacing components each signal-pair might require.  This is the help I am looking-for.

Chris

[Brian_Beal · Accepted solution]

Chris-

With the wiring section from the manual for each component, you should be able to make the connections.  By the way, Yaskawa inputs can be sinked or sourced, but the manuals only show one way.  It looks like you might need to add a relay to the inhibit out from the controller.  The 7342 voltage output is 5V, but the Sigma needs at least 11. 

[iq66]

Hi 

I would like to design a PID controller for the servopack SDGV sigma 5 to be 1800 rpm using LabVIEW program.  Currently, I am trying to implement my own encoder and send the feedback signal to servopack but unable to do so.    Also, there are Yaskawa VI's that can control the servo motor's speed.  Perhaps, is it possible to use an absolute encoder inside servo motor to regulate the speed?

[Justin__D]

Hi iq66,

Since this topic has been dead for some time, it would be best to start a new post.  That way you will get more people looking at the post and should receive quicker responses.

As for your question, most of NI's motion hardware is meant to work with quadrature encoders.  However, it is possible to use an absolute encoder in certain situations.  Could you explain a little more about your setup?

This link may explain this a little more.

Absolute Encoders and NI Products

[Brian_Beal]

The Sigma-5 has its own velocity PID loop. You can send it an analog signal that is proportional to the speed you want.  What motor and drive do you have? Full part numbers, please.

[iq66]

Hi 

Thank you for a quick response.

It is Yaskawa SGDV-5R5A11A.  I want to understand the code better and be able to control the speed using either LabVIEW PID controller or Yaskawa's own closed loop control.  

More Manual : http://www.yaskawa.com/site/products.nsf/products/Servo%20Amplifiers~SGDVSigma5.html?openDocument&se...

Manual for MECHATROLINK-II Communications Reference: http://www.yaskawa.com/site/dmservo.nsf/(DocID)/TKUR-79CM3D/$File/SIEPS80000043.pdf

Yaskawa LabVIEW VI http://www.yaskawa.com/site/dmservo.nsf/link2/DLEE-7UDMQK/$file/ENG.09.127.MTN_Yaskawa_LabVIEW_Drive...

[Brian_Beal]

That is a Mechatrolink version, so no analog is available.  You should be able to run a certain velocity or to a position using a Mechatrolink card and the Labview drivers.