Set Up and Maintenance
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4.6.6.2 Dynamic Zero Offset and Angle Count
Dynamic zero offset is measured as the average torque while the spindle first runs the specified Target
angle degrees in forward direction and then in the reverse direction.
If an Angle count test is specified the motor will run exactly as when performing a Dynamic zero offset
test. The angle is measured separately in the forward and the backward direction. Both measured angles
must be greater than the specified Target angle – Angle limit and less then the specified Target angle +
Angle limit. If not then step status is set to Fatal and the error flag ANGDIAG is set. If Dynamic zero
offset is selected as well then it is measured at the same time as the Angle count test.
4.6.6.3 Flying Zero Offset
Flying zero offset is measured as the average torque while the spindle runs forward. The measurement
is not started immediately when the diagnostic step is started but first after that the Time from cycle start
to measuring has elapsed.
The average value is calculated during Measuring time. The absolute value of the measured offset
should be below Maximum Flying Zero Offset.
Whether or not the step is stopped when the offset exceeds this value depends on the value of Continue
to run on failed Flying Zero Offset. If checked then a too high value just generates a warning
(FLYZODIAG) and the bolt is not stopped. If not checked, then the occasion is considered to be an error
(FLYZODIAG) and step status is set to Fatal.
Since measuring does not necessarily start immediately when the diagnostic step does, both measuring
and evaluation may be done while during the execution of another step. If the cycle ends before
measuring is started, that is before Time from cycle start to measuring has elapsed, then the measuring
is cancelled and neither an error nor a warning is generated.
Note! The measured zero offset value is used to compensate all torque readings from that the next step
(compared to the step where the last zero offset measuring was taken) is started.
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