Mill Roll Weighing Station

1 Mechanical check[edit | edit source]

Is very important to check the mechanical stops on the load cells, release all !!!
Be sure that all the loadcells are free, othervise later you will have problem with the weighing accuracy.
There are also two big screws on each side of the frame in the middle, check that these are also released.

Before you start any kind of configuration you should check the connections if they are connected to the right plug and the right terminal, if it is not right later you cannot calibrate the scale.
For this type of unit we have several connections but we use only the plug with 3 terminals and use only the analog outputs. Following you have a small table of the connections.

After the connection are correct you can start configuring the scale.
To open the professional settings you have to push the arrow which is on the left side of the screen hold it and then power on the module, hold it until you can choose the language.
After you have chosen the language you will be in the setup menu.
Then you have to set the type of the output this can be done if you follow the path:

Setup Menu -> Personalizations -> Outputs -> Analogue output -> Output type: Current 4-20 mA

After we set the type of the output we go back to the Setup menu and make the calibration.

Setup Menu -> Terminal Test -> Analogue output -> Current calibr.

To calibrate the output for 4mA I recomend this to do it with pvss.
Pushing the arrows down or up it will increase or decrease the raw value on the output.
Before adjusting according to pvss you have to adjust first the scale factors in the parameters panel, in my case i just had to put in the multiplier factor 18000 because the weighing station can weigh up to 18t.
I have adjusted it according to pvss put the scale as close as i could to zero.
After you finished calibrating to zero you have to calibrate also to 20mA.
Same procedure like before try to get as close as possible to the higher limit of the scale.

When you are adjusting the higher limit the module will give 20 mA output so you can see on Pvss that the scale will be around your maximum scale value (if you factors have been correctly set already), but you can still make some fine tuning and get really close to the desired value.
When you calibration was finished you just go back to Setup Menu you push ESC again and the he will ask you if you would like to save?
You confirm and then the scale will restart in operational mode.

You can test the scale by climbing on all four corners and also on the middle bars, in any position it should always show the same value, if not then check again that your loadcells are free.
Zeroing the scale is really easy can be done anytime by just pushing the zeroing button on the controller.