Atlas Copco PowerMACS 4000, User Manual

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Tightening
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Diagram :
Angle
Torque
Step
Gradient
GradHigh
GradLow
Shut off point
Gradient
Torque
ThreshT
A dist
A dist
GradHigh Gradient high ThreshT Threshold Torque
GradLow Gradient low A dist Angle distance
Reported Grad value
Result var.: This restriction produces the step level result variable "Grad"which is the lowest gradient
measured during the restriction or the gradient that violated the high limit of the restriction.
Alarms : Gradient high restriction (GHR) and Gradient low restriction (GLR).
Trace : Gradient High and Gradient Low are shown in trace as horizontal lines from the point where
the first gradient was calculated to shut off when Gradient vs. Angle is selected. Restriction
limits must be enabled in the trace form (see
View of trace curves).