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DSCL21

Loop Powered Isolators - DIN Mount with Current-Input

Each DSCL21 loop powered isolator provides a single channel of analog signal protection by electrically isolating its input from output for any DC process signal in the range of 0-20 mA (or 4-20 mA). The DSCL21 operates passively, obtaining its power from the transmitted signal.

The input signal is chopped by a proprietary DC chopper circuit, isolation is provided by transformer coupling, a proprietary technique is used to suppress transmission of common mode spikes or surges, the output signal from the secondary of the transformer is reconstructed to the original input signal.

Circuit diagram Dataforth DSCL21

Block Diagram DSCL21



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1 Module for Type DSCL21:

ModuleInputDescription
DSCL21-01 0 to 20 / 4 to 20 mA DSCL21 Loop Powered Isolator - DIN Mount with Current-Input and Current-Output

Specifications

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  • Input: 0 … 20 mA / 4 … 20 mA
  • Output: 0 … 20 mA / 4 … 20 mA
  • Bandwidth 750 Hz
  • 500 Vrms Isolation
  • Accuracy ± 0.1% (typ.), 0.2% (max.)
  • Linearity included in the accuracy
  • no calibration necessary
  • CMR 90dB
  • NMR: 20dB / Decade > 750 Hz
  • Loop Supply Voltage
  • Operating temperature range -20°C … +65°C
  • Dimensions 75 x 49.5 x 12.5 mm
  • DIN Rail or Panel Mounting
  • CE Compliant