Operator Controls on Autopack Machines
1-In line with current trends in production line control and integration, 
Autopack Shrink Systems are available with a single operator interface for 
control of both the Sleeve wrapper and Shrink Tunnel.
 
It is a simple and easy to understand operator panel which eliminates 
multitude of Pushbuttons otherwise required to bring the machine to operating
state.    
  With just two Pushbuttons, the operator is able to pre-energise AC drives,
  Pre-heat Welding bar and Tunnel, Pressurise pneumatics and put the machine
  into production.  When stopping, the machine is brought to rest at the
  completion of machine cycle, thus allowing for immediate restart without
  resetting.  

  The operating panel also contains Emergency stop and Reset Buttons.
  Alarm are displayed by Blue/Orange/Red Tower light visible from distance to
  alert the operator if machine is in need of assistance.  


 1.1 Step Up Step down control principle
  Generally two steps or three steps on more complex machines are used to 
  control  
  The Step UP -designated by Up arrow

  Step 0: With Main switch On 24v DC powere supply is On, the up button
          is blinking prompting the operato to Step Up 
  Step 1: Pre-heat
      - With all doors Closed, Pressing the Up buton will cause:
      - Welding bar to Raises, 
      - Welding bar is pre-heating, 
      - Tunnel Conveyor Starts, 
      - Tunnel is pre-heating
             
   During the pre-heat the doors may be opened for machine setting or loading
   raw material (film or cardboard).
       When the temperature has reached set point, the Step up button and
       Run light start blinking in succesion-prompting the operator to step up.
   
   Step 2: Pressurize / Run
      - Collation area is pressurized after small delay Infeed conveyor starts

   Step 3:Autopack Traypackers or Shrink Wrappers with Pad insertion 
          The infeed is started in Step 3
 
  The Step Down button works in reverse order when momentarily pressed.
  If pressed for longer time it will drop down to 0 level.

2-Operator Panel (Can be remote if required)
  ------------------------------
      - Emerg  Stop Button 
      - Alarm/Reset Button (illuminates if machine needs to be reset)
      - Operation Indicator Pilot.- Permanently on when running.  

      - Step UP        Button (Illuminated with up arrow.
      - Step Down      Button 
     
      - Safety door - drops the machine to level 1 (preheat on)
      - Eemerg Stop - drops the machine  to Level 0 for safety reasons.
        
        As such emergency stop should be used only for emergency.
        If any problem with machine, operator should open the door.

3-Tower light - (Blue/Amber/Red-on top)
 
  Red-Machine Stopped-Need immediate operator or Technical assistance
       as Dangerous condition occured.
      -Emergency stop pressed 
      -Motor overload tripped
      -Malfunciton of heating system control relays stays too long
       of or On.    

 Amber-machine operation malfunction -need immediate operato assistance
      -Product jam
      -monitoring timers exceeded on either:
       Film feed/Pusher/Welding bar/Lifter/outfeed back up detection 
       Broken film detected

  Blue-Machine is working but Need operator assistance.         
       Low film Detection
       Outfeed back up detected

4-Touch Screen-Optional
  ---   Touch screen-functions may vary with model. 
        the display panel is used for:
   Display Messages:
      Text and graphic display of major alarm conditions:
      - Door Open/Emergency Stop/Motor and Temperature Alarm
      Text/graphic display of operational alarm  conditions        
      - display of operational errors. 
      Text/graphic display of low Raw material conditions
	or upstream or downstream line conditions     
      - Low blank level -(WLC models)
      - low film level
      - Outfeed queue full
  
   Input operating parameters:
      - input Welding Bar contact time. (Dwell Time)
      - Input No of Rows for horizontal collator ounter.
      - Input No of layers for Vertical Collator counter.

      - Input Glue patch position and length on Traypackers
      - Machine life cycle counter - good for service
      - Batch counter with "stop at count" option	

   Input Safety parameters:
      - Input of Monitor Timers (for technical staff only)