Absolute encoder adjustment X-axes

Absolute encoder adjustment X-axes on Unipress with SIMODRIVE

Attention:

This work may only be carried out by qualified skilled personnel.

Situation:

Absolute encoder adjustment must be carried out in the following cases:

• When the reference point is lost having exchanged the motor.
• When the reference point is lost having exchanged the encoder cable of X-axis 1 with X-axis 2.

The system ascertains when the reference point of an X-axis is no longer available and displays
the following fault message:

Preparation:

1. Make sure that the operating mode Setup is selected. Set the respective X-axis to the position of the reference mark A.
   
2. Select the "Setting up the touch-panel" screen.
3. Open the "User Administration" screen by clicking button A. 
4. In order to log on, press button A and enter the following data into the logon window:  
       User: service
       Password: serv1ce
    
5. Confirm entries with OK.
    
6. After a successful logon, the Service user is logged on and now entitled to carry out the absolute encoder adjustment.

Procedure:

1. Open "Axis Limits" screen 
   
   The current display of X1 or X2 indicates the current absolute encoder value and should be at 0000.0 once the adjustment has been successful.
   
    
2. By pressing the button A , the procedure for adjusting the absolute encoder beings. This refers to the pending procedure:
   
   
3. Confirm with the A button (cancel by pressing the B button).
   
4. A  Start procedure with START button on the control panel
    
5. B  Select X-axis 1 or X-axis 2 with button J or K. The selected X-axis is.
    
6. C  Is the selected X-axis positioned on the reference mark? (→Chapter3.8.1) If yes, then confirm with button I.
    
7. D  Are the protection and emergency off circuits OK? Pending faults in the protection and emergency off circuits have to be acknowledged as well as any possible pending faults in the positioning assembly FM357.
    
8. E As soon as step 4 has been executed, the X-axis starts its absolute encoder adjustment and, once complete, shows the value 0000.0xx.
   The error window H appears if the adjustment is not successful. Please read the information provided below in this connection.
    
9. F Procedure complete, all step sequences light up green.
    
10. If adjustment of the absolute encoder is successful, the following screen appears:
    
    Enter 10% (Value 10 is required) into the input field A and then select the operating mode for
    selection strokes B. As soon as the entries have been made, the screen "Axis Limits" appears

Attention:

We recommend producing the first two sheets in a single stroke and then checking the positions of the X-axes.