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Power monitoring

€249,00 EUR
€249,00 EUR
Sale Sold out
Description

This program section enables adaptive current monitoring, in which the highest current values are recorded over ten clock cycles during a calibration phase and an average value is calculated from this as a reference limit.

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
Start calibration

Simultaneous edges at Impuls_Rezeptwechsel and Impuls_Produkterkennung set Startmessung , reset the counter and deactivate monitoring and WerteErfasst .

Value capture

During each active Takt_Impuls the highest current value is stored in Maxwert_Takt .

Write to the array

If the clock edge falls, Startmessung is active, less than ten values have been acquired and there is no idle signal, Maxwert_Takt is written to MaxStrom_Werte , the counter is incremented and Maxwert_Takt is reset.

Calculating the average

After ten values have been saved, the average of all entries is calculated and set as the limit. Then Startmessung ends, ÜberwachungAktiv , and WerteErfasst are activated.

Monitoring phase

The current current value is compared with the limit value. If the limit is exceeded, a TON timer ( Ueberschreitung_Zeit ) starts. If it expires without the current decreasing, Fehler_Motorblockade is activated. If the current decreases, the timer stops and the error is cleared.

Error reset

Reset_Fehler clears the error status and resets the timer so that a new monitoring can start.

Technical details
  • Inputs/Variables: Impuls_Rezeptwechsel , Impuls_Produkterkennung , Takt_Impuls , Stromwert_Aktuell , E_Leerlauf , Reset_Fehler , Ueberschreitung_Zeit
  • Flags/Counter: StartImpuls_Erkannt , Startmessung , ÜberwachungAktiv , WerteErfasst , Zaehler_Stromwerte , Takt_Impuls_Alt
  • Array: MaxStrom_Werte for ten calibration values
  • Output: Fehler_Motorblockade
  • Timer: TON time module Zeitzaehler with adjustable running time
Possible applications
  • Protection against overload and blockages in motors and pumps
  • Monitoring of conveyor systems and drives with variable load
  • Condition-based alarming in test benches or production lines
compatibility
  • Siemens S7‑1200 & S7‑1500 controllers
  • Compatible with TIA Portal from version V13
  • Recommended: TIA Portal V16+ for PLCSIM & HMI
Scope of delivery

Included is an SCL file with De