DFE SW6 Operating Instructions Manual - Page 14
Browse online or download pdf Operating Instructions Manual for Controller DFE SW6. DFE SW6 20 pages. Digital tension controller
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2.5 TAPER TENSION
Figure 16 - TAPER SETPOINT ON METER
Finding the right taper percentage for a particular process may take some experimentation
in adjusting both the auto tension setpoint and the taper percentage. See the table below for
common winding defects and corresponding corrective actions:
Location
Core
Core
Outside
Outside
Global
Roisum, David R. What is the Best Taper to Run on My Winder? Converting Magazine, ©November 2007.
2.6 TLS, ALARMS AND RESETTING THEM
Tension Limit Switches (TLS) are used to indicate that tension is outside a specified range.
The controller can be set up to respond several different ways when tension wanders outside
the range specified with TLS settings.
If TLS is set in the Momentary mode, the controller will issue a visual on-screen "TLS"
alarm in yellow letters to the left of the meter scale (Fig. 19) when tension is outside of the
acceptable range. Once tension has returned to the specified range, the alarm will
automatically reset and disappear.
Perhaps more useful is the Latched mode, when the same alarm appears accompanied by
a more prominent "RESET TLS" message flashing in red across the meter scale (Fig. 20).
The latched alarm may be reset only by pressing on the flashing red message, and only after
tension has returned to the specified range.
In addition to issuing visual alarms when tension is out of range, TLS can also be set to
disable tension control. If tension control is disabled by TLS, the controller cannot be relied
upon to return tension to the specified range all by itself. To restore tension to the specified
range, press and hold the tension On/Off button until tension returns to the specified range,
and then release the button.
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continued..
Tight/Loose
Tight
Blocking, Crushed Core
Loose
Telescope During
Unwinding
Tight
Baggy Lane Due to Gage
Variation
Loose
Out-of-Round Roll
Tight
Telescope During
Winding, Starring
Figure 18 - EXAMPLES OF WHEN TO RUN TAPER
Figure 17 - TAPER DISPLAY ON TRENDLINE
Example
Decrease Tension
Increase Tension
Increase Taper
Decrease Taper
Increase Tension and
Taper
Move