Impulse DSCL20 - Manual

Industrial Loop Isolators and Transmitters DSCL
For information call 800-444-7644 162
DSCL20
Loop Powered Isolator - “Component Module”
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Features
• No Power Supply Required, Signal Powered
From 0-20mA (or 4-20mA) Input
• Simplified Wiring, Easy to Install Plug-In
Accessories
• Small OEM Modular Package Ideal for
PCB Mounting
• I/O Packaging for Vertical or Horizontal
Mounting
• 500Vrms Transformer Isolation
• Prevents Ground-Loop Problems
• Prevents the Transfer of Interference
Voltages and Currents
• High Accuracy Over Full Span
• CE Compliant
Description
Each DSCL20 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 0-20mA (or 4-20mA). The DSCL20 operates passively,
obtaining its power from the transmitted signal (see Figure 1).
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, and the output signal from
the secondary of the transformer is reconstructed to the original input signal.
Figure 1: DSCL20 Block Diagram