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DIGITAL COMMUNICATIONS
SELF TUNE PROGRAM (Models 2003 and 2004 only)

TM-5-3895-374-24-2 M081 Asphalt Mixing Plant Manual
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TM 5-3895-374-24-2 SECTION 4-TUNING 4.1 CONTROLLER TUNING This  controller  has  been  configured  at  the  factory  with  input,  output  and  alarm  functions  to  meet  your  specific application.    Arbitrary  alarm  and  tuning  values  were  used  at  the  factory  to  allow  complete  controller  checkout.    It  is necessary for you-to TUNE this controller to your specific process or machine before going to automatic control.  For tuning, you may use the SELF TUNE feature (Models 2003 and 2004 only) or you may use manual tuning (all models). In  the  tune  program  the  PARAM  DISPLAY  key  advances  the  displays.    The  LAST  key  may  be  used  to  review  the previous display at any time. This section provides complete details on all Tuning procedures. 4.2 THE TUNE LOOP Access to the TUNE loop requires that a special key code be entered  before  any  Tuning  can  be  done.    Press  the  keys TUNE-LAST-YES  in  sequence  as  shown  in  Figure  4-1  to enter the TUNE loop. A yellow TUN indicator will illuminate on the display when the code  is  entered  correctly.    If  the  TUN  indicator   does   not come  ON,  push  the  RETURN  key  and  then  push  the  code again.  The PARAM DISPLAY key will advance the displays in the TUNE loop and the LAST key will back up the displays. FIGURE 4-1 A flow chart of the TUNE loop is located in Section 7.3 that shows all possible displays in this loop.  Your controller will only show those displays that are appropriate and necessary for your application. One or two of these displays will appear in sequence when ALARM 1 TIMER 1 alarms and/or timers have been included.  Alarms can be XXXX UU XXX:XX process (display units) or deviation units (i.e., DF for Deviation Fahrenheit).  Timers (Models 2000, 2001 and OR 2003 only) are set in units of HR:MIN or MIN:SEC up to 999:99 with the time units selected as part of the ALARM 2 TIMER 2 configuration calibration.  Use the arrow keys to set in XXXX UU XXX:XX the desired Alarm or Timer values.  Push the PARAM DISPLAY key to advance to the next display If setting the alarm or timer relay(s) is the only function you wish to perform in the TUNE loop, push the RETURN key to return to normal operation. ECLIPSE INSTRUMENTATION DIVISION page 3-1094







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