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shrink packaging machine

€4,90 EUR
€4,90 EUR
Sale Sold out

Description
This SCL function block, FB_Shrink_Packaging, controls the film packaging process with a conveyor belt, film feed, sealing, and shrink tunnel. It includes emergency stop and temperature safety checks, monitors sensors, and counts packaging cycles. It runs directly in the Siemens TIA Portal.

Note: All modules are designed exclusively as a learning and optimization basis and are not approved for live operation. System modules, in particular, must be finally tested and commissioned by qualified personnel before productive use.

How it works

  1. Security check
    If emergency stop or temperature error is activated (TempOK = FALSE), all actuators are stopped, alarm and error are set, step is reset and the process is terminated with status “Safety stop or temperature error!”.

  2. Cycle start
    A positive edge at the start input (Start TRUE → FALSE) in combination with ProductDetected and no active error initiates the packaging cycle.

  3. Foil and welding
    – Step 0 : BandStart activated until start edge is detected.
    – Step 1 : Film feed until film ready, status “Foil ready – welding follows”.
    – Step 2 : Welding starts, TON timer (#welding duration) runs, then welding stops.

  4. Shrink tunnel and closure
    – Step 3 : TunnelOn activated, TON timer (#TunnelDuration) is running.
    – After the timer ends, TunnelOn is reset, CycleCounter is increased and the status “Cycle completed – ready for new start” is output, then the system returns to step 0.

Technical details
Inputs: Stop, TempOK, Start, ProductDetected, FilmReady, Acknowledge
Outputs: BeltStart, FilmFeed, Welding, TunnelOn, Alarm, Error, StatusText (STRING), CycleCounter (INT)
Timer instances:
• Welding timer (TON, PT = #Welding duration)
• TunnelTimer (TON, PT = #TunnelDuration)
Edge detection: StartEdge = Start AND NOT StartOld
Flow control: CASE on INT variable step; RETURN in case of security violations

Possible applications
Automated shrink packaging lines in the food, cosmetics or pharmaceutical industries, retrofitting of existing packaging machines, demonstration and training systems for PLC cycle processes.

compatibility
Siemens S7-1200 & S7-1500 PLC, TIA Portal V13 and higher; V16+ recommended for PLCSIM and HMI integration.

Scope of delivery
An .scl file with declarations of all inputs/outputs, timer instances, CASE logic, and header comments (author, website, email, customization notes). Download link available immediately after purchase.

Support
Adjustment of welding and tunnel times, integration of additional safety functions or HMI layouts on request via shop message or email.