Dancer feedback speed control details
75
3
PID upper/lower limit hysteresis width (Pr.137)
When the dancer roll position fluctuates, the FUP/FDN signal may chatter (turn ON and OFF repeatedly), depending on the
position.
To prevent the signal chattering, configure
Pr.137
PID upper/lower limit hysteresis width
to set a hysteresis for the FUP
and FDN signals.
NOTE
•
Pr.137
setting does not affect the operation of the Y231 signal. (Refer to
for the details of the Y231 signal.)
• When a value other than "9999" is set in
Pr.137
, depending on fluctuation of the dancer roll position, the FUP/FDN signal may
not be turned ON even if the dancer roll position exceeds the
Pr.131
setting or falls below the
Pr.132
setting.
Dancer roll position
Pr.137
Pr.131
ON
ON
ON
FUP
Example of the PID upper limit (FUP) signal
Summary of Contents for A800 Plus Series
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