9. Diagnostics and Fault Clearance
• DOK-CONTRL-DDC+MDD+DLC-ANW1-EN-E1,44 • 01.97
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A reference cycle is described in section 8.1 in detail.
After the referencing, the reference dimensions remain shifted within one
motor revolution (1 x feed constant).
• In jog mode, move the axis to a measured position and read the actual
position from the CTA display.
• Select parameter A111 and enter the difference between the actual and
command position.
Input = A111 + (actual position - command value position)
Note the qualifying signs!
A111 is positive with 0*****.**
A111 is negative with 1*****.**
Example:
A111= 1 0 0 1 0 0 . 0 0
command value position =400
actual position = 402.43
A111 = -00100.00 + [(+) 400 - (+) 402.43]
A111 = -00102.43
• Switch on setup mode and reference again.
• Run the axis to the measured position. The position in the CTA must
agree with the command value position.
Motors with absolute
position determination
As a result of replacing a motor it is possible that the reference dimensions
are inaccurate within the entire position detection range. To reestablish this
reference dimension it is necessary to bring the forward feed axis to a mea-
sured position (note markings on the machine carriage).
Set the relevant dimension in parameter absolute encoder reference posi-
tion (C007). See section 8.3 for details.
Measure the first workpiece after the motor is replaced as fine adju-
stment may be necessary.
The value determined for parameter A111 should be documented
outside of the control as well.