SCREEN DEFINITIONS
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CYGNUS
MI 850A316 1 B
Page 46 of 66
Screen Function
Definition
Calibrate setpoint ___RPM
Enter a value corresponding to the present speed of the
roll being measured by the RPM sensor
Calibrate tension meter output
Select to calibrate the 0 to 1 mADC auxiliary tension
meter output (Not normally required)
Calibration single pt/two pt
Toggle between single or two point diameter sensor
calibration. Two point is more accurate
Change parameters
Select to access inertia and acceleration compensation
parameters
Change Setup
Select to enter setup selection screen. Up to ten
different setups may be stored to allow different setup
parameters to be accessed quickly. This feature is
useful when one machine is used to run more than one
material; also see COPY SETUP
Configure I/O
Select to enter CYGNUS inputs and outputs
configuration
Consult the manual to diagnose failures
Display message advises you to consult the manual if
the voltages present do not agree with the expected
values. See section 6.3.3 of this manual for further
instructions
Copy Setup
Select to enter setup copy options. You will be prompted
to select a setup number to copy to the current setup
number. You will then be prompted to choose either a
complete copy of all settings, a copy of sensor
calibrations only, or to exit without copying anything. If
you choose to exit without copying, you must recalibrate
sensors for the new setup number.
Core diameter___
Enter a value for the diameter of the core
Core WK
2
___
Enter a value for the inertia of your core. A core may be
approximated as a solid disk, for which the inertia is
calculated by multiplying half the weight with the radius
squared: inertia = (WK^2) = (W)*(R^2). (Core weight
must include the shaft or chucks.)
Decel time ___ sec
Enter a value for the amount of time in seconds that it
takes to decelerate the machine from max operating
speed to a complete stop
Derivative ___sec
Enter a value for the derivative time. This tuning
parameter helps to prevent overshooting of the setpoint
while tension deviations are corrected. decreasing this
value can improve stability.
Design using auto tune parameters
Select to enter control design method configuration by
choosing PI, PID, or I only. The design can be changed
without re-tuning.
Diagnose Load Cell
Select to enter load cell diagnosis screen
Diameter
Select to enter calibration of an external diameter
sensor. Diameter sensor input must be active; see also
CONFIGURE I/O
Summary of Contents for Cygnus MAGPOWR
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