HEIDENHAIN iTNC 530 Service Manual page 350

Proposal 2:
20 – 350
Switch the position display to LAG and observe the display.
Adjust the offset at the servo amplifier until the individual axes either display the value 0 or
oscillate around 0 (approximate value ± 3-5 µm).
Note
You can use the integrated oscilloscope with the settings s actl., s noml.,
s diff. --> See "Integrated Oscilloscope" on page 10 – 99.
Reset the machine parameters and position display to their original values.
Carry out an offset fine adjustment via code number 75368. --> See "Offset fine adjustment
in the control" on page 20 – 351.
Shut down the control and switch off the machine.
Disconnect the nominal speed cable from the control.
Bring the nominal value of the axis to be adjusted to zero potential (short-circuit the ±10 V
line with the 0 V line of the axis concerned).
Note
You can also produce a D-Sub connector for every analog nominal value interface X8 and X9.
There is a bridge between ± 10 V and 0 V (See "X8: Analog output 1 to 6" on page 27 – 459,
See "X9: Analog output 7 to 13" on page 27 – 459) for every channel in these connectors.
Connect the corresponding connector to the nominal speed value cable that you have
disconnected from the control (X8, X9).
Advantage of this method: The nominal speed cable is included in the offset adjustment of
the servo amplifier.
Switch on the main switch of the machine.
Do not acknowledge the Power interrupted message, but call the machine parameter list
immediately.
Set parameter 120.x to zero. --> No nominal value output, only display of axes.
(If necessary, deselect the reference point traverse in MP 1340.x).
Switch on the machine.
Check the controller enabling on the servo amplifier and establish it, if required.
(If necessary, ask the machine manufacturer)!
Select Manual operation, set the display to the actual value and set the axis to zero.
Adjust the servo amplifier to standstill as close as possible. The axis movement can be seen
on the actual value display and possibly on a pulley.
Restore the original condition (cabling, parameters).
Carry out offset fine adjustment with the code number 75368. -->See "Offset fine adjustment
in the control" on page 20 – 351.
HEIDENHAIN Service Manual iTNC 530