9.0 OPTIONAL FUNCTIONS
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MAGPOWR Spyder-Plus-S1 Tension Control
MI 850A351 1 C
Page 42 of 68
9.6.7
START TIME (Load Cell Only)
Enter a value based upon the amount of time it takes your machine to ramp up from stopped to steady state
operation. If the tension spikes during this time, try increasing this START TIME value.
9.6.8
STOP TIME
Enter a value based upon the amount of time it takes your machine to ramp down from steady state operation to a
complete stop. When this time has expired, Spyder will automatically proceed into HOLD mode.
9.6.9
MAXIMUM VELOCITY (Load Cell Only)
Used by inertia compensation to compute the stopping torque required to stop the roll from the entered maximum
velocity in the stop time.
9.6.10 ROLL WIDTH (Load Cell Only)
Used by inertia compensation to compute the stopping torque required to stop the roll of this entered width in the
stop time.
9.6.11 STOP MULTIPLIER
(Not used on Dancer Speed)
Enter a value that will dictate the control output during STOP mode. Spyder will use the last control output during
RUN mode before the STOP signal is received and multiply it by the value set here for the duration of the Stop
Time. The control continues to control tension during the Stop Time. When the stop multiplier value is correctly set,
it will automatically boost output to the braking device and decrease output to a clutch device during stops to keep
the tension constant. For Load Cell systems only, STOP MULITPLIER values less than 1.0 are used on unwinds
when additional torque devices are activated during stop. For example, if the number of active actuators on a
MAGPOWR Pneumatic Brake is increased from 1 to 2 during stopping, set STOP MULTIPLIER to a value of 0.5.
For a dancer system controlling a speed device the STOP MULTIPLIER is not used. For an open loop tension
system Stop Multipliers less than 1.0 are used on Rewinds to decrease the torque to stop the roll and values
greater than 1.0 are used on Unwinds to increase the torque to stop the roll.
9.6.12 INERTIA COMPENSATION PERCENT
(Used on Dancer Torque)
The value in percent added or subtracted to the output during stopping. This value is modified by tension and last
running level when diameter is not used and is modified by the diameter ratio of present diameter divided by full roll
diameter when diameter is used. This value must be calibrated with the system running and by entering a value
that will be added to the last running output during the stop time to stop the roll at the present diameter, torque and
tension.
9.6.13 HOLD LEVEL (Load Cell and Dancer Torque)
The output level of the Spyder will go to this value in Hold Mode. The Spyder switches to Hold Mode when the
Run/Stop Input is closed. Hold Mode only occurs while in Auto. Hold mode is delayed Stop Time seconds after the
Run/Stop input is closed. This value is also used to calibrate hold level when hold level varies with Diameter and or
Tension. To calibrate hold level enter the desired hold level for the present diameter and or tension. The present
reading of diameter, tension and last running output (Dancer) is used during the calibration so the system may
need to be running to get diameter, tension and last running output readings when performing the calibration.
9.6.14 HOLD LEVEL MULTIPLIER (Load Cell and Dancer Torque)
This parameter is used when hold level is selected to vary with Output. The output of the control in hold mode is the
last running output multiplied by the Hold Level Multiplier.
9.6.15 CORE OFFSET (Open Loop Tension only)
The core offset will add or subtract a fixed value of torque from the output to allow adjustment of tension at core
diameter. If tension is too high at core use a negative value for core offset. If tension is too low at core use a
positive value for core offset. The range of this parameter is from -20% to 100%. The default is 0%.
9.6.16 CORE DIAMETER (Load Cell, Dancer Torque with Diameter, Dancer Speed with Diameter, and Open
Loop Tension only)
In the parameters menu, enter the core diameter of the roll. Used by the control loop and for taper tension.
9.6.17 FULL ROLL DIAMETER (Dancer Torque and Open Loop Tension only)
In the parameters menu, enter the full roll diameter of the roll. Used by the control loop and for taper tension.
Summary of Contents for MAGPOWR Spyder-Plus-S1
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