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MAQ20 Analog Input Module Frequency

Measure Frequencies to 1 MHz

The MAQ20 frequency input module offers 8 input channels for measuring frequencies up to 1 MHz. All channels are individually configurable for range and alarms to match the most demanding applications. Four controllable outputs can be used for sensor excitation or as 5 V logic compatible outputs. High, Low, High-High and Low-Low alarms provide essential monitoring and warning functions to ensure optimum process flow and fail-safe applications. Field I/O connections are made through a pluggable terminal block with positions designated for the termination of wiring shields.

Input-to-bus isolation is a robust 1500 Vrms and each individual channel is protected up to 240 Vrms continuous.

Channels in a module can be selectively enabled for scanning. All channels are enabled by default; however, non-used channels can be disabled to increase the system sampling rate of enabled channels.

Circuit diagram Dataforth MAQ20 Analog Input Module Frequency

Block Diagram MAQ20 Analog Input Module Frequency

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  • 8 Input Channels
  • 50 mV Sensitivity
  • Frequency Range – 0.5 Hz to 1 MHz plus State Change
  • Operating Range – DC + Signal ≤ 300 Vrms
  • All Channels Individually Configurable for Range and Alarms
  • 4 Excitation Sources to Power Sensors or Provide 5 V Logic Compatible Output
  • 1500 Vrms Input-to-Bus Isolation
  • Each Channel Protected up to 240 Vrms
  • Selective Enabling of Module Channels for Scanning
  • Operating Temperature -40 °C to +85 °C
  • Dimensions 114.6 x 15.3 x 82.8 mm
  • UL Class I, Division 2, Groups A, B, C, D Pending