10.0
TROUBLESHOOTING
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MAGPOWR Spyder-Plus-S1 Tension Control
MI 850A351 1 C
Page 45 of 68
10.3 TUNING PROBLEMS (Dancer Control)
Problem
Possible Cause
Solution or Diagnostic
Position unstable
Control is not optimally
tuned.
Use Quick Stabilize
Navigate to the
QuickStab
menu. Press
the
key and then press
If Unstable
to immediately try to stabilize.
Review “
Tuning
” once stability is obtained.
See Section 7.5.
For Dancer, Torque with Diameter systems
go to the Tuning menu in section 7.6.
“Cannot be stabilized.”
Appears while using quick
stabilize.
The dancer position
sensor is “phased”
incorrectly.
The dancer position sensor must be set up
per Section 7.4 and Figure 12.
The DFP or DFP-2 passes
through its “dead” zone.
The dancer position sensor must be set up
per Section 7.3 so that its voltage varies
smoothly from min to max as defined in
Figure 12. Verify that the dancer position
signal varies smoothly using the Position
screen in the Operator Loop.
Diameter not correct.
Diameter is not calibrated.
Calibrate diameter per section 7.4.3.
The messages
“Re-Tune P at
core” or “Re-Tune P at full”
repeatedly appear.
The system is less stable
at some intermediate roll
diameter than it is at core
or full roll.
When the message appears retune P at
the present diameter rather than at core or
full roll.
Dancer position does not
match the Setpoint
Low proportional gain
Optimize the proportional gain (P). Follow
the tuning procedures in section 7.5 or 7.6.
For P and PD control there must always be
an error between the actual position and
the setpoint position to produce an output.
Adjust the position setpoint until the
desired dancer position is achieved.
Use PID (torque) or PI (speed). These can
be selected on the
Configure
menu
following selection of the
Control Type
.
For Dancer, Torque with Diameter systems
(gain compensated dancer) the control is
always in PID mode. Increase the stop
torque ratio if position does not correct
near core diameter.
Summary of Contents for MAGPOWR Spyder-Plus-S1
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