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FRA251

Frequency Alarm - FRA251


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Frequency Alarm - FRA251

The FRA251 converts pulse, contact and frequency signals to a DC signal and also provides a relay contact output, and features:

  • Input from any type of frequency or pulse sensor.
  • Frequencies from 5Hz up to 5kHz.
  • Sensor excitation.
  • Front adjustments for trip setpoint and deadband.
  • Options for trip delay and external trip adjustment.
  • No isolation provided.
  • 12/24V ac/dc power supplies.

Common applications include:

  • Speed monitoring and alarm.
  • Wind speed alarm and measurement.
  • Signal conversion and local alarming

Input

Speed/Frequency

Function

Alarm

Output

Relay