Atlas Copco PowerMACS 4000, User Manual

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Tightening
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Result var .:
This step produces the step level result variables “DT T”, "DT Mean T" and "Relax A".
"DT T" is the torque measured when the torque set point is switched to DT.
"DT Mean T" is the mean torque measured during the second time interval (TI2).
"Relax A" (relaxation angle) is the angle that the bolt moves during the time interval
TI1 + TI2.
Trace : Torque T is shown as a horizontal line from step start to step stop in trace when Torque vs.
Time is selected. Control parameters must be enabled in the trace form (see
View of
trace curves).