July 2010 20 – 351
Offset fine
adjustment in the
control
The axes to be compensated must be in the position control loop. --> If necessary, ask the
machine manufacturer!
8 Select the Programming and Editing operating mode.
8 Call the code number window.
8 Enter the code number.
8 Confirm.
The iTNC displays the offset values of the analog axes in the dialog line.
The values show the setting of the voltage in 0.15-mV steps.
Display value 10 means: 10 · 0.15 mV = 1.5 mV.
8 Press the corresponding soft key in order to …
Carry out an offset compensation.
The values are stored in the nonvolatile memory. By the offset adjustment with
the code number, the current offset of the entire control loop is compensated.
Later changes in offset are not compensated.
Do not carry out an offset compensation, or end a previous compensation.
Exit the menu without making any changes.
Before you carry out offset fine adjustment via code number, you must first adjust the offset
at the servo amplifier!
The control can compensate only ± 100 mV with the offset fine adjustment by code
number! This corresponds to 1% of the ± 10 V interface!
An insufficient offset adjustment on the servo amplifier can thus not be compensated any
more with the code number adjustment.
The displayed offset value consists of the offset values that are generated in the servo
amplifier and in the control.
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