Impulse DSCL23 - Manual

DSCL
Visit our website www.dataforth.com 169
Industrial Loop Isolators and Transmitters
DSCL
DSCL23
4-20mA Isolator with DC Supply - DIN or Panel Mount
▲
Features
• Feeds DC Power to 4-20mA Transmitter,
Isolates Loop
• Simplified Wiring for Quick Install and
Signal Protection
• DIN Rail or Panel Mountable
• Narrow DIN Package, Mounts up to
27 Devices into a 19” Rack Space
• No Recalibration or Maintenance Required
• 2300Vrms Transformer Isolation
• Prevents Ground-Loop Problems
• Prevents the Transfer of Interference
Voltages and Currents
• High Accuracy Over Full Span
• CE Compliant
Figure 1: DSCL23-01 Block Diagram, Single Channel Model
Description
Each DSCL23 loop powered isolator provides 1 or 2 channels of analog signal
protection by electrically isolating its input from output for any DC process signal
in the range 4-20mA. The DSCL23 feeds isolated DC power to the field
transmitter and returns a fully isolated 4-20mA analog 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.
DSCL23