Atlas Copco PowerMACS 4000, User Manual

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Tightening
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6.5.2.26 D - Diagnostic Step
Step type Id: 22
Parameters:
Function: Defines the diagnostic checks to perform in a tightening program.
Normally the diagnostic step is the first step in a program but it can be a later step in the
program (e.g. when Flying Zero Offset is used).
The diagnostic step can also be performed in a special program, which can be run between
normal cycle programs. The normal programs will hence be faster.
The limits for PowerMACS zero offset compensations are configured using the Spindle Set
Up form.
Select if you want a
Spindle Functional Test to be performed. This test verifies the spindle
is working correctly and adjusts the spindle‟s measuring system. This test is performed
automaticly at startup but it is recommended to run a Diagnostic step with the spindle
functional test as the first step in every tightening program to compensate torque
measurements.
The spindle takes care of zero offset compensation, if this is not sufficient you can select to
let PowerMACS
also compensate for zero offsets using the Static , Dynamic or Flying
method.
Check
Angle count test to execute a test of the angle measurement channels. Chapter:
Dynamic Zero Offset and Angle Count describes how this is done.
Errors detected in a diagnostic step are reported as
Fatal errors except for one case. If the
Flying Zero Offset parameter Continue to run after failed check is checked (see Spindle
Set Up), a flying zero offset error is reported as a warning instead of as an error.
Note! The double torque transducer test is not executed while the spindle functional test is
performed or zero offset is being measured. The double angle encoder test is not executed
while the spindle functional test is performed.
Trace : There are no control parameters for this step type in trace.