Impulse DSCL20 User Manual
Dscl20, Loop powered isolator - component module, Dscl
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