Analog programming - speed control with potentiometer

pevee

Hi, I'm working on some project for college and i'm stuck on analog programming. Project is next: over the panel with push-buttons and a potentiometer, to a s7-300 PLC, then to the frequency converter abb acs880 which is connected to the asynchronous motor. I know how to wire everything exepct maybe potentiometer. I will show you some pictures if someone want to help me. First, this is analog input AI8x12Bit (6ES7 331-7KF01-0AB0) I address (288...303) and analog output AO4x12Bit (6ES7 332-5HD01-0AB0) O address (304...311). I used scale and unscale blocks for analog programming and i always got sf lamp. Sry on my bad english. 

 Hello pevee,

Please have a look and read the post of Marcjan:

Analog Module SM331 - Entries - Forum - Industry Support - Siemens

and the Mesuring range module on the left side of the card is in B position?

Hi Ste39,

I read MARCJAN posts but it did not help much. I think I connected potentiometer corectly. At the entrance L I connected a resistor of 2 kilohms, then end terminal to ground M, midlle terminal goes under the scheme to Ch0 to pin 2, and 4 wire goes to pin 3 and the ground M. I think that's it. The problem is to write the code. In Hardwere i chose Voltege 10V but  always when I want to run a program error occurs.

Sry but i dont know what you mean with this question "and the Mesuring range module on the left side of the card is inBposition?". Where is that B position?

pevee

Sry but i dont know what you mean with this question "and the Mesuring range module on the left side of the card is inBposition?". Where is that B position?

 hello, 

If you take off the card from rail you will find this range module, put in B position and then look if the SF led disappear

Ste39

 

pevee

Sry but i dont know what you mean with this question "and the Mesuring range module on the left side of the card is inBposition?". Where is that B position?

 hello, 

If you take off the card from rail you will find this range module, put in B position and then look if the SF led disappear

 ok, so i take off analog input module and there is that position...i will look that tomorow when i go to college.... wiring and program is ok?