Frequency Alarm - FRA251

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