DFE SW6 Operating Instructions Manual - Page 11

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OPERATING INSTRUCTIONS

2.1 BASIC OPERATION

When the controller has been properly set up and the control loop has been tuned, it should maintain

constant tension while the machine is running and while speed, roll diameter, or other conditions change.

However, during startup of a new roll you may want to change modes, setpoint or other settings. Usually,

the only thing the operator will need to do is turn tension On or Off, toggle between Auto and Manual

modes, and change the Auto tension setpoint or Manual output setting.

With tension off, to turn tension on and enable output, press the tension On / Off button. If the controller

is in Auto mode, the output will ramp up or down to tension the web to the Auto Tension Setpoint. If the

controller is in Manual mode, the output will change to the manual output setting. Either the auto or manual

mode will be indicated as active by the Auto / Man status indicator in the upper right hand corner of the

display. The Auto and Manual modes can be toggled back and forth by pressing the Auto / Man button.

While in either auto or manual mode, the "+" and "-" buttons for adjusting the auto tension setpoint or the

manual output setting can be brought up by touching the tension display screen.

2.2 DISPLAY ADJUSTMENTS

Operator-adjustable display settings described

below may be found and adjusted at Menu > Main

Menu > Operator Menu > Display Configuration

(Fig. 7). Adjustments to these settings may be

made using the up and down arrows, and then

saved by pressing the SAVE button. These

adjustments serve visual purposes only, and do

not affect the control loop.

• Tension Update - Choose 0.2, 0.5, 1.0, 2.0 or

5.0 seconds and press SAVE to adjust the time

it takes for the display to update with new

information. Longer updates produce fewer

changes in displayed information over time, at

the expense of rapid visual response to

changes in tension.

• Display Damping - Choose 0.0, 0.2, 0.4, 0.8, 1.6 or 3.2 sec and press SAVE to adjust how smoothly

information is displayed.

• Plot Update Time - Choose 30 sec or 1, 2, 5, 10 or 30 min and press SAVE to adjust time that tension

displays before dropping off the trend-line graph screen. This also applies to the PID tune screen

referenced repeatedly in the Technical Reference Manual (DFE P/N 801-2540).

• Line Speed Display - Choose Auto, On or Off and press SAVE. When in Auto, if line speed is required

for control, it will be displayed by default. Otherwise, either On or Off may be chosen to force the display

of line speed or to suppress it.

• Diameter Display - Choose Auto, On or Off and press SAVE. When in Auto, if the roll diameter is

required for control, it will be displayed by default. Otherwise, either On or Off may be chosen to force

the display of roll diameter or to suppress it.

• Display Brightness - Adjust between 10% and 100% and press SAVE to control the brightness of the

display.

2.3 SAVING, RECALLING AND DELETING SETUPS

An Active Setup is composed of all the most recently selected settings and is held in non-volatile memory,

meaning that even if power is lost, the settings will not be. The active setup is not recalled using the

named setups, but will automatically come up again upon restart if the controller is shut down while

operating in that setup.

Figure 7 - DISPLAY CONFIGURATION MENU