With absolute measuring systems

The AL8200-MES-Feedback indicates only the absolute position in relation to a pole pair. Homing is necessary each time after switching on. The commutation offset only needs to be determined once and saved. The commutation offset is determined in the same way as with other absolute measuring systems. For that reason the AL8200-MES-Feedback is not described separately here.

Set the values for "Commutation Mode" and "Adjustable Commutation Offset (mechanical)" in parameter P-0-0150 (see picture below).

With absolute measuring systems 1:

The configuration must be activated to confirm the settings. Command P-0-0166 is used to set the electrical commutation offset.

CAUTION

The execution of this command causes a movement of the motor!

Wait for the message "Succeeded to start the command"!

"Yes" must appear as result under "Equal Directions".

With absolute measuring systems 2:

Read the value for "Commutation position difference". Subtract this value from the value in P-0-0057 "Electrical commutation offset". The result, if positive, is the new value for P-0-0057. Add 360° to the result if it is negative.

Sample:

90° - 121.78° = -31.78°

-31.78° + 360° = 328.22°

The result is the new value for P-0-0057 "Electrical commutation offset". Enter the value in SetValue and confirm with <Enter>. Confirm the message that then appears with Yes (picture below).

With absolute measuring systems 3:

The new value becomes active immediately upon pressing the download button (red arrow → picture below).

With absolute measuring systems 4:

The value is displayed in the setting "ActValue" after the download is complete. Execute command P-0-0166 again!

The value for "Commutation position difference" should now lie within the range:

355 ... 360 = 0 ... 5.

If this value is displayed you have successfully completed the commutation search!
The offset value has already been adopted into the startup list with the download button.

If the value lies outside the range, P-0-0057 can be corrected again using the method described. If no useful value is found, the more detailed check should be performed with the help of command P-0-0166. In this case, please observe the section: "Checking the motor phases and the encoder counting direction".

With absolute measuring systems 5:

Further information can be found in the parameters:

P-0-0057, P-0-0150 and P-0-0166.