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8B-Current In/Out

Isolated Signal Conditioners for Backpanels

Current Input Modul 3 Hz (8B32)

8B modules are an optimal solution for monitoring real-world process signals and providing high-level signals to a data acquisition system. Each 8B32 module isolates, filters, and amplifies a process current input signal and provides an analog voltage output.

Current to voltage conversion is accomplished internal to the module to ensure high accuracy.

Signal filtering is accomplished with a 3-pole filter optimized for time and frequency response which provides 70 dB of normal-mode rejection at 60 Hz. One pole of this filter is on the field side of the isolation barrier for anti-aliasing, and the other two are on the system side.

A special input circuit on the 8B32 module provides protection against acciden-tal connection of power-line voltages up to 40 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.


Current Output Modul 100 Hz (8B39)

8B modules are an optimal solution for monitoring real-world process signals and providing high-level signals to a data acquisition system. Each 8B39 module accepts an input signal from a non-isolated source, then isolates, filters, and converts the signal to an analog process current output.

Signal filtering is accomplished with a 3-pole filter optimized for time and frequency response which provides 60 dB per decade of normal-mode rejection above 100 Hz. One pole of this filter is on the system side and the other two are on the isolated field side.

A special output circuit in the 8B39 module provides protection against acciden-tal connection of power-line voltages up to 40 VAC continuous. Clamp circuits on the I/O and power terminals protect against harmful transients.

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


2-Wire Transmitter Interface Modul 100 Hz (8B42)

8B modules are an optimal solution for monitoring real-world process signals and providing high-level signals to a data acquisition system. Each 8B42 module provides power to a current transmitter, then isolates, filters, and amplifies the resulting process current input signal and provides an analog voltage output.

Current to voltage conversion is accomplished internal to the module to ensure high accuracy.

Signal filtering is accomplished with a 3-pole filter optimized for time and frequency response which provides 60 dB per decade of normal-mode rejection above 100 Hz.

A special input circuit on the 8B42 module provides protection against accidental connection of power-line voltages up to 40 VAC. Clamp circuits on the I/O and power terminals protect against harmful transients.

Isolation is provided by transformer 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.

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Specifications

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  • Input: mA- oder V-Signale
  • Output: 0…+ 5 V / + 1…+ 5 V / 0…20 mA / 4…20 mA / ± 20 mA
  • Bandwidth 3 Hz / 100 Hz
  • Isolation 1500 Vrms
  • Input protection 240 VAC / 40 VAC
  • Input Resistance < 50 Ohm / 50 MOhm / 50 Ohm
  • Accuracy ± 0.05%
  • Linearity ± 0.02%
  • ANSI/IEEE C37.90.1 Input protection
  • CMR 120dB / 110dB / 100dB
  • True 2-way isolation
  • NMR: 70dB at 60Hz / 60dB/Dec>100Hz / 100dB/Dec>100Hz
  • 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
  • Wide range of accessories
  • Special Solutions on request