7.0 DANCER CONTROL
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MAGPOWR Spyder-Plus-S1 Tension Control
MI 850A351 1 C
Page 28 of 68
7.4.3.1
Core Diameter (Required for gain compensation in Torque and Speed modes)
Enter the core diameter in the Parameters menu.
7.4.3.2
Full Roll and Core Diameter (Required for gain compensation in Torque mode only)
Enter the full roll diameter in the Parameters menu.
7.5 TUNING (REQUIRED
)
Use section 7.5 for tuning Dancer, Torque with no diameter and Dancer, Speed controls. Use section 7.6 for Tuning
Dancer, Torque with Diameter control.
7.5.1
TUNING STEPS (Dancer, Torque no diameter, and Dancer Speed with/without diameter control)
Three steps are involved
1. Set the position setpoint potentiometer to the midpoint.
2.
Quick Stab
to get the control loop stable if upon start-up the default
parameters do not provide a stable closed loop. See Section 7.5.2.
3.
Tuning
optimizes the Spyder by first tuning to make the system slightly
unstable; then adjusting the tuning parameters to make it stable. By doing so
the system is tuned to be as responsive as possible and still remain stable
throughout its range of operation. See Section 7.5.3.
NOTE:
Applies to Setpoint Source is Analog.
The position setpoint input is not active during tuning. The
and
keys are used to change dancer position instead. For this reason, the web must be stopped (Run/Stop = Stop) and
restarted (Run/Stop = Run) to exit the tuning screens. A screen is provided to warn the operator of this. Since
tuning cannot be done while the web is stopped, the Spyder automatically returns to the Tuning Menu when the
web is stopped. Make sure to set the position setpoint potentiometer to the midpoint before restarting after tuning.
NOTE:
Applies to Setpoint Source is Ethernet.
The position setpoint can always be changed during tuning
either by Ethernet or by the
and
keys. The dancer does not need to be stopped to exit the Tuning screens.
7.5.2
QUICK STABILIZE
– FIRST STEP
Default tuning parameters are embedded in the Spyder and were selected to minimize instability. If the system is
exhibiting extreme fluctuations at start-up, perform the following procedure to quickly stabilize it. Fine-tuning using
Tuning
will still be required.
NOTE:
The system must be running to Quick Stabilize.
Navigate to the
Quick Stab
menu and press
.
If the system is unstable then press the arrow key associated with
the
If Unstable
text until the system is stable. If the system is stable then press the arrow key associated with the
text
If Now Stable
or
Done
.
Two types of screens will appear while performing the Quick Stabilize tuning:
See 7.5.1.1 Quick Stabilize, Integrator Test
Navigate to the
Cal Diameter
menu and Press
.
The diameter calibration is a single point diameter calibration. Only the
large diameter point is calibrated. The lower diameter calibration point is
implied to be 0 volts input equals 0 diameter.
Input a voltage into the diameter input and press the
key on the Present
Diameter screen and enter a diameter that corresponds to the voltage
input. Press the
key to finish diameter calibration.
The Present Diameter screen actively displays the diameter. The Present
Diameter screen is also available from the
Operator
menu.
Summary of Contents for MAGPOWR Spyder-Plus-S1
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