Atlas Copco PowerMACS 4000, User Manual

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Tightening
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6.5.4.6 Check angle
Parameters: AH (Angle high), AL (Angle low), Start condition , Tstart (Torque start), Stop condition ,
Tstop (Torque stop), Operate on (Step or Zone),
Torque channel (Auto, Torque 1, Torque 2 or Torque 3 (Current as Torque)),
Angle channel (Auto, Angle 1 or Angle 2), Result variable
Function: Measures the angle movement made during a step and checks that it is between the high
limit
AH and the low limit AL . When to start and stop the measuring is controlled using
parameters Start condition and Stop condition as follows:
Start condition Value used as start angle
T
The angle, A_Tstart, measured when torque reaches the value Tstart .
AS1 The angle of the current position when the step is started.
AS2 The angle measured at shut of the previous step.
AS3 The peak angle reached during the execution of the previous step.
SGP The "Snug Point "of a SG step. See SG - Snug Gradient for a description.
Zone start Angle at zone start
Stop condition Value used as end angle
F - "Final" The final angle (AE1, measured when the "Overshoot time" has passed
after shut off).
SO - "Shut Off" The angle measured at the shut of point (AE2).
P - "Peak" The largest angle measured from shut off until the "Overshoot time" has
passed (AE3).
SOP - "Shut Off
Previous"
The angle measured when the torque falls under the shut off torque
measured during the previous step (AE4).
T - "Torque" The angle, A_Tstop, measured when torque drops below the value of
Tstop after the shut off point.
Zone end Angle at zone end
Note! The "Overshoot time" (which is measured from that the step is shut off, see chapter:
Step
– Check) has to be programmed long enough to monitor the requested end condition.
Both limits are optional. Leaving them blank disables the check but the result value is still
calculated and reported.
The check is only evaluated if both the
Start condition and the Stop condition are met. If
not, and at least one limit is specified, the steps status is set to Fatal and the error bit of the
respective limit is set.