Atlas Copco PowerMACS 4000, User Manual

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Tightening
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Result var: Delta T
Alarms: Delta torque high (DTH) and Delta torque low (DTL).
Trace : No limits are shown in trace.
6.5.4.16 Low Spot Torque (only available for Gauging)
Parameters: TH (Maximum low spot torque), TL (Minimum low spot torque),
Start condition , Astart (for Start condition Angle)
Set null position (Store low position to Null position register)
Set low position (Store low position to Low position register)
Function: The lowest torque during the check is measured and compared to the limits (TH, TL). The
measurement starts when the angle
Astart (measured from check start) has been passed.
If Start condition is Step start or Zone start the measurement starts directly when the
check starts.
The measurement ends then the step or zone ends. If it is running on step level the last
sample is taken at the shut off point of the step.
If
Set null position or Set low position is set the low position, that is the angle where the
low spot torque was found, is stored in the corresponding position register. It is possible to
return to this position later with the step
Run to Position .
Result var: Low Spot T
Alarms: Low spot torque high (LTH) and Low spot torque low (LTL).
Trace: Torque vs. Angle
6.5.4.17 Check Position (only available for Gauging)
Parameters: PH (Maximum distance to selected position),
PL (Minimum distance to selected position),
Reference position (Null, Half, Peak or Low position),
Function: The distance to the selected position at the shut off point of the step is compared to the
limits
PH and PL . Both limits are optional.
The distance is calculated as Distance = Reference Position
– Current Position, the result
can be both negative and positive.
Result var: Position A
Alarms: Position high (PH) and Position low (PL).
Trace : No limits are shown in trace.