7.0 DANCER CONTROL
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MAGPOWR Spyder-Plus
MI 850A320 1 M
Page 26 of 60
Besides “P” the parameter being tuned can also be “I”. The number next to this letter is not the value of the
parameter. It is there to show the progress of the tuning. Its value can be between 00 and 99. 00 is displayed
when that parameter is as stable as it can be. When the system is stable, press
Done.
The Spyder will tell you
which parameter should be retuned such as:
Pressing
will automatically take you to the correct parameter to be retuned. This particular message needs some
comment. Retune
P
at the present diameter (not at core or full roll) if P was previously tuned at core (full roll) and
this message repeatedly comes up. For large roll builds the system may need to be Quick Stabilized a few times
while a roll is being wound or unwound for the first time.
Note that Error Limit is not tuned by the tuning screens. Decreasing Error Limit can sometimes stabilize a system,
but increasing it will not usually cause a system to become unstable. If the tuning procedures fail to produce a
stable system it may be necessary to manually decrease the Error Limit parameter. The system can be made less
responsive by decreasing the Error Limit.
7.5.2
OPTIMIZE TUNING - SECOND STEP
7.5.2.1
Dancer, Torque
Navigate to the
Tuning
menu and press
.
For a Dancer in Torque mode one of the following screens will be
displayed depending on the tuning type selected:
PD Tuning
PID Tuning
The Spyder should be optimized at or near core first. On unwinds “Quick Stab” may be needed while an initial roll is
unwound.
The Spyder should be optimized at full roll only after it has been optimized at core. On rewinds “Quick Stab” may be
needed to keep the system stable while a roll is wound.
See 7.5.2.3 for a typical tuning screen.
7.5.2.2
Dancer, Speed
Navigate to the
Tuning
menu and press
. For a Dancer in Speed mode one of the following screens will be
displayed depending on the tuning type selected:
P Only Tuning
PI Tuning
The Spyder should be optimized at or near full roll first. On rewinds “Quick Stab” may be needed while a full roll is
wound.
The Spyder should be optimized at core (PI
tuning) only after it has been optimized at full roll. On unwinds “Quick
Stab” may be needed to keep the system stable while an initial roll is unwound.
See 7.5.2.3 for a typical tuning screen.
