Atlas Copco PowerMACS 4000, User Manual

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Set Up and Maintenance
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4.6.6 Diagnostic page
The parameters located on the Diagnostic page specifies the limits of the zero offset tests in the D -
Diagnostic Step.
Only the equipped channels are visible. It is also possible to specify if a cycle should continue to run after
a failed flying zero offset test.
In the Spindle Functional Test Limits frame it is possible to set the limits used in the spindle functional
test. These limits are stored in the physical spindle. To make a change enter wanted values and press
Store to spindle .
4.6.6.1 Static Zero Offset
To a large extent you can eliminate torque-measuring errors by performing zero offset check and
compensation. When such an operation is done is controlled by the execution of a D - Diagnostic Step.
Static zero offset is measured without turning the spindle. The static zero offset is the average torque
measured during Measuring time . The absolute value of the static zero offset must be below Maximum
Static Zero Offset . If not, step status is set to Fatal and the error flag STZODIAG is set.