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SensorLex8B45

Frequency Input Modules with Voltage-Output, Response time up to 0,8 msec

8B modules are an optimal solution for monitoring real-world process signals and providing high-level signals to a data acquisition system. Each 8B45 module isolates and conditions a frequency input signal and provides an analog voltage output.

The frequency input signal can be either a TTL level or zero crossing with as little as ± 100 mV amplitude. Input circuitry for each signal type has built-in hysteresis to prevent spurious noise from corrupting the module output. TTL signals are applied to the + and – terminals while zero crossing signals are applied to the +EXC and – terminals. Reference the block diagram below.

A 5 V excitation is available for use with magnetic pick-up or contact closure type sensors. The excitation is available on the –EXC terminal with return on the terminal.

A special input circuit on the 8B45 module provides protection against accidental connection of power-line voltages up to 240 VAC. Clamp circuits on the I/O and power terminals protect against harmful transients.

Isolation is provided by optical coupling to suppress transmission of common mode spikes or surges. The module is powered from + 5 VDC, ± 5%.

The modules are designed for installation in Class I, Division 2 hazardous locations and have a high level of immunity to environmental noise.

Circuit diagram Dataforth SensorLex8B45

Block Diagram SensorLex8B45



PDF Downloads:

  • Product Overview SensorLex8B
  • Produkt Catalog SensorLex8B
  • Backpanels and Accessories

  • 8 Modules for Type SensorLex8B45:

    ModuleInputDescription
    8B45-01 0 Hz to 500 Hz SensorLex8B45 Isolated Frequency Input Module with Voltage-Output
    8B45-02 0 Hz to 1 kHz SensorLex8B45 Isolated Frequency Input Module with Voltage-Output
    8B45-03 0 Hz to 2.5 kHz SensorLex8B45 Isolated Frequency Input Module with Voltage-Output
    8B45-04 0 Hz to 5 kHz SensorLex8B45 Isolated Frequency Input Module with Voltage-Output
    8B45-05 0 Hz to 10 kHz SensorLex8B45 Isolated Frequency Input Module with Voltage-Output
    8B45-06 0 Hz to 25 kHz SensorLex8B45 Isolated Frequency Input Module with Voltage-Output
    8B45-07 0 Hz to 50 kHz SensorLex8B45 Isolated Frequency Input Module with Voltage-Output
    8B45-08 0 Hz to 100 kHz SensorLex8B45 Isolated Frequency Input Module with Voltage-Output

    Specifications

    top
    • Input: Frequenzcy up to 100 kHz
    • Output: 0 V … 5 V
    • TTL level and Zero Crossing
    • Isolation 1500 Vrms
    • Input protection 240 VAC
    • Input Resistance 68 kOhm
    • Accuracy ± 0.05%
    • Linearity ± 0.02%
    • ANSI/IEEE C37.90.1 Input protection
    • CMR 100dB
    • True 2-way isolation
    • Response Time 0.8 ms to 160 ms
    • Power Supply +5 VDC
    • Operating Temperature Range -40°C … +85°C
    • Mix and Match Types on Backpanels possible
    • Dimensions 28.1 x 41.9 x 10.2 mm
    • Optional DIN Rail Mounting
    • CE compliant, C-UL-US Listed
    • Wide range of accessories
    • Special Solutions on request