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Set of automatics for milk pasteurization – IR-VDP-24-P

Application:

  • pharmaceutical industry;
  • chemical industry;
  • food industry.
Diagonal size of console screen 4 or 7 inches
Console screen type and lighting: LED, TFT
Number of connected temperature sensors: 2 pcs, product and jacket
Type of connected temperature sensors: NTC 10 kOm 3950, PT1000
Limits of main given error: ±0,5
Temperature maintenance method: two-level control or PID control
Type of output devices: electromagnetic relay (НО or НЗ, 5 А at ~250V)
Number of discrete inputs: 8
Discrete input voltage: 24 VDC
Number of discrete outputs in additional equipment control: 8
Console protection grade: IP65
Protection grade of other system devices: IP20
Set of automatics voltage: 24 VDC

Work conditions:
Environmental temperature:  
0...+55 °С
Relative humidity:
10...90%
Environment:
without aggressive agents and conductive parts

Technical specifications


Main functions:

  • cheese-making mode – 9 stages to be adjusted separately (stage-by-stage mode);
  • creation of up to 10 recipes of the product preparation;
  • completely manual mode – for professionals in cheese-making;
  • main screen configuration depending on necessary functions without participation of programmers (screen can display only one pasteurization icon or all at once – stage-by-stage mode, pasteurizing mode, manual mode, washing mode and filling pump activation);
  • pasteurization (heating-holding-cooling-storage);
  • product’s heating (by jacket/product temperature);
  • cooling and storage (by jacket/product temperature);
  • watering into jacket (manual and automatic);
  • delayed start of pasteurization (timer or set time trigger);
  • mixer control (manual and automatic);
  • product filling;
  • product feeding;
  • event logging (up to 30 days);
  • alarm logging (up to 30 days);
  • service hours count (of mixer, heating elements, electromagnetic valves).

Protective functions:

  • cutoff of activated mode in case of emergency alarm;
  • control of temperature sensor conditions;
  • protection of heating elements from blowing;
  • protection of mixer from overloads and emergency alarm;
  • disconnection of mixer if the hatch is open (if there is an inductive sensor on the hatch);
  • protection from liquid boiling-off in the jacket.

Additional functions:

  • local tank washing (connection of hose pumps to deliver washing solutions);
  • mixer speed change using frequency inverter;
  • limitation of mixer maximum rotation speed;
  • smooth switch from heating mode to pasteurization mode without overheating a product – control of first group of heating elements through solid-state relay for an accurate maintenance of specified temperature of the product using PID control;
  • connection of each heating element group from separate contactors;
  • product level (volume) measuring using pressure sensor;
  • mixer interlock when hatch is open.

Operating procedure

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