• Es ist ein FB Baustein aus Tia Portal Frequenzrelais es wird ein echter Frequenzrelais damit Simuliert es soll als Box oder CD hülle ähnlichem dargestellt da es nur als Download ja verfügbar ist Siemens LOGO Schrift weglassen gerne auf englich
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Frequency relay

€4,90 EUR
€4,90 EUR
Sale Sold out
Description

The FB_FrequencyRelay function block monitors a frequency and checks whether it is within a defined range. The logic realistically maps normally closed ( #NO_13_14 ) and normally open ( #NC_21_22 ) contacts, allowing virtual inputs to be used for enabling (e.g., for testing or grading). In simulation mode, the behavior can be reproduced without real signals.

Note: This logic is intended as a template. Before productive use, it must be integrated, tested, and approved by qualified personnel. Inadequate integration can lead to faulty switching states.

How it works
Reset

#Reset resets the block to a safe initial state: normally closed contact inactive, normally open contact active (error/idle state). Status indicates reset.

Disabled

If #Enable is not set, both contacts remain off. The block behaves passively without error warning.

Frequency rating

The measured frequency ( #Freq ) is checked against the lower and upper limits ( #LO_Limit , #HI_Limit ). If it is within the range, #FreqOK is set.

simulation

In simulation mode, #FreqOK directly controls the outputs: normally closed contact shows valid frequency, normally open contact shows invalid frequency.

Normal operation

In real operation, the inputs also act as releases:

  • #NO_13_14 is only active if #Input_13 is set and the frequency is valid.
  • #NC_21_22 is only active if #Input_21 is set and the frequency is out of range (inverted).

Status and diagnostics are reset if no errors are present.

Technical details
  • Inputs: #Enable , #Reset , #SimMode , #Freq , #LO_Limit , #HI_Limit , #Input_13 , #Input_21
  • Internal state: #FreqOK – TRUE if frequency is within the allowed bandwidth
  • Outputs: #NO_13_14 (normally closed), #NC_21_22 (normally closed)
  • Status & Diagnosis: #Error , #Status , #DiagnosticCode
  • Modes: Reset, Disabled, Simulation, Real-time
  • Logic: Frequency range test with optional input enable and contact mapping
Possible applications
  • Frequency monitoring in power supply and drive systems
  • Pre-validation of frequency conditions in simulation mode
  • Integration into control and alarm chains for transparency of frequency deviations
  • Linking measured values with enabled contacts for adaptive controls

Note: A complete technical inspection and approval by qualified personnel is required before productive use.

compatibility
  • Can be used in PLC environments with SCL (e.g. Siemens TIA Portal)
  • Modular integration into diagnostic, control and safety architectures
  • Simulation enables safe tests without real frequency signals
  • Safe basic state when deactivated
Scope of delivery

You will receive:

  • An SCL file with the implemented function block FB_FrequencyRelay
  • Complete declaration of all inputs/outputs and internal states
  • Commented logic for easy customization
  • Quick guide to integration

The download link will be provided after purchase.

Support

I am happy to support you with:

  • Adjustment of frequency limits and logic
  • Integration into higher-level control or alarm chains
  • Simulation and validation before real operation
  • Specific extensions for your application

Contact is possible via shop message or email. Extensions are available as optional customizations.