SCREEN DEFINITIONS
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CYGNUS
MI 850A316 1 B
Page 52 of 66
Screen Function
Definition
Press until stable (decrease error lim)
Press either 3 or 8 to decrease the ERROR LIMIT
incrementally until the web tension becomes stable.
Watch the ACTUAL TENSION display above as you
adjust the ERROR LIMIT.
Program
Select to enter programming screens
Prop gain ___
Enter a value for the proportional gain. This tuning
parameter adds a correction factor that is proportional to
the deviation from the tension setpoint. A higher value
will make the system more responsive but a proportional
gain that is too high will result in an unstable system.
Factory default setting is "0"
Quick Stabilize
Select to attempt to remedy an unstable condition by
manipulating the error limit. This feature should be used
if the default settings are causing extreme disturbances
in the system. After stabilizing with this method, it is
necessary to tune the system. See also Section 7.0
Rating
Enter a value for the max combined load rating of your
load cell(s) as specified by the manufacturer
Recover values
Select to use the corresponding tuning parameters as
your fixed tuning parameters if GAIN SCHEDULING is
deactivated or if parameters are manually modified. It
can also be used to recover AUTO TUNE
measurements.
Rewind
Toggle this selection for applications where CYGNUS is
controlling a device that sets the tension in a rewind
zone. See also Figure 3
Roll dia ___
Enter a value for the diameter of your full roll
Roll wgt ___
Enter a value for the weight of your full roll
RPM
Select to enter roll RPM sensor calibration. RPM sensor
must be activated to continue; see also CONFIGURE
I/O
RPM sensor type
Toggle to activate an external RPM sensor. Check the
specifications for the sensor to determine if its output is
"pulse" or "voltage" type
Run
Display indicates the present mode of operation is
normal running status. TB3.1 and TB3.2 must be open
and START TIME expired
Run/stop input
Toggle to indicate if RUN/STOP will be triggered from
TB3.1 & TB3.2 or by Fieldbus communication. See also
FIELDBUS
Secured
Select to enter security screen. When SECURED is
displayed, all calibration and parameter settings are not
accessible until unlocked by the proper four digit code;
see also UNSECURED
Sensor type is set to "none"
Display indicates the sensor you are attempting to
access has not been configured correctly. See also
CONFIGURE I/O
Setpoint
Enter the desired tension value for your process that you
wish to maintain during normal running conditions
Summary of Contents for Cygnus MAGPOWR
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