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Injection Molding
Barbra Colman
HPM/BARBER COLEMAN “MACO 4500”
MACHINE CONTROL  SYSTEM

DESCRIPTION
Electroluminescent operators panel - keypad data entry
Internal storage of up to 12 set-up recipes
Multi-level security
Sequence selector functions
Linear positioning of clamp/ejectors/injection
Multi-stroke ejector control
Time/count functions
Full PID temperature functions (auto-tune):
  Four (4) zones standard (includes contactors)
  Optional zone control to maximum of six (6)
  Hi-low deviation alarms
  Thermocouple break protection
  Heater band burn-out detection
  Cold start protection
Hydraulic modifications for injection process control:
  Proportional control of injection speeds
  Proportional control of injection pressure and extruder back pressure
  Superimposed onto existing hydraulic circuit
Injection process control:
  10 step closed loop velocity profile
  10 step closed loop back pressure profile
  1 step closed loop pack pressure profile
  1 step closed loop hold pressure profile
  Automatic shot correction
  Transfer by time/position/hydraulic pressure
  Decompression:  post/pre-screw rotation
Machine and processing diagnostics:
  Alarm screens
  Real time pressure/velocity traces (graph)
HPM Remanufacturing additional standards:
  New machine type interlocking and wiring
  Documentation of programs, logic and wiring layouts
  Electrical noise suppression
  Compliance with current electrical codes and regulations to prevent control damage/malfunctions. These controls must be grounded to a separate grounding rod. Refer to National Electrical Code #NFPA 70
NOTE:  Proper grounding is the responsibility of the customer
 
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