how to create a VI for controlling an inverter SSD 650V

[nessun nome]

Dear NI I am very new to Labview and I need a lot of help fast. I have to realize a VI which control a motor through a SSD 650V Series Inverter? The VI has to drive the inverter which in turn drives a motor in forward and reverse direction. I would like to know if the VI I need already exists and anyone could send it to me or, if it is not possible, I would like to know further detailed informations about the realisation of the VI. Thanks in advance for your help Maria Grazia

[Wayne.C]

Maria,

You did not give much in details about your application, but I'll take a shot at it.

I have not seen any code that was specifically for this drive but the literature indicates that the SSD 650V has a fairly standard set of features.  The cheapest way to control it would be if the drive had the MODBUS option.  There is a MODBUS library for LV  that can be found here.  http://sine.ni.com/devzone/cda/epd/p/id/4756  .  MODBUS library is built on the VISA functions.  You could then use a serial port on a PC to control the drive.  Recomend RS485 when working with drives.

You could also use the analog and digtal inputs on the drive to control FWD, REV and motor speed.  This might cost a bit more because it would require some NI Hardware.

Again, the best solution depends on what the whole picture looks like.