Nexen AE120 912674 - Manual (Page 8)

8
FORM NO. L-20230-E-1107
1. In Manual Mode, align the guide roll mechanism or
moveable roll stand so it is in the middle of its
mechanical travel or neutral position.
2. Align the Automatic Centering Sensor with its
magnetic trigger to give as near zero output as
possible, measured at Terminals 9 and 0.
OUTPUT GAIN ADJUSTMENT
1. If the guide roll mechanism or roll stand hunts or
oscillates while the AE120 is operating in
Automatic Mode, rotate the Output Gain Pot
(OUTPUT) counterclockwise until hunting stops
(See Figure 8).
FINE ADJUSTMENT TRIM
1. One rotation (360 degrees) on the Fine Adjustment
Control located on the control panel should move
the web position 0.04 In. [1 mm] (See Figure 7).
1. If the guide roll mechanism or roll stand moves full-
travel to its stop in either direction when the Mode
Switch is set to CENTER, reverse the setting of the
CENTER Operation (NOR/REV) Switch (See
Figures 7 and 8).
2. If the guide roll mechanism or roll stand moves in
the wrong direction when the Mode Switch is set to
MAN and one of the Manual Operation Switches is
depressed, reverse the setting of the MANUAL
Operation (NOR/REV) Switch (See Figures 7 and 8).
AUTOMATIC CENTERING SENSOR ADJUSTMENT
3. Switch to Centering Mode; then, adjust the C.
ZERO Centering pot to maintain the guide roll
mechanism or moveable roll stand at its neutral
position (See Figures 7 and 8).
4. If the guide roll mechanism or roll stand hunts or
oscillates back and forth in Centering Mode, adjust
the Centering Gain pot ( C. GAIN) until the motion
stops (See Figure 8).
2. If the guide roll mechanism or roll stand is sluggish,
adjust the Output Gain Pot ( OUTPUT) clockwise
until control speed matches web speed (See
Figure 8).
2. If one rotation of the Fine Adjustment Control moves
the web position more or less than 0.04 In. [1 mm],
increase the amount of correction by rotating the
Fine Adjustment Trim Pot (F. ADJ) clockwise and
decrease correction by rotating the pot
counterclockwise (See Figures 7 and 8).
GUIDE ROLL MECHANISM or ROLL STAND ADJUSTMENT
3. If the guide roll mechanism or roll stand moves in the
wrong direction when the Mode Switch is set to
AUTO, reverse the setting of the AUTO Operation
(NOR/REV) Switch (See Figure 7 and 8).
4. If all of the above (Steps 1-3) are operating in
reverse, reverse the motor leads at Terminals  and 
instead of reversing each switch (See Figure 6).