Overview
The Omega DRSL-LPI-1 is a DIN rail-mounted input loop-powered isolator designed for galvanic isolation of 4-20 mA current signals in automation and process control applications. The DRSL-LPI Series provides galvanic isolation of current signals to SCADA systems or PLC equipment. These units are powered by the analog input current signal loop, eliminating the need for external power supplies while providing isolation between input and output, surge suppression and protecting control systems from transients and noise.
Key Features
- 1:1 conversion of standard current signals
- Eliminates ground loops and can be used for measuring floating signals
- Low power consumption facilitates DIN rail mounting without the need for any air gap
- Measurement ranges are factory calibrated
- Provides surge suppression protecting control systems from transients and noise
- Single-channel configuration for streamlined signal conditioning
Technical Specifications
Functional range is 0 to 23 mA (NAMUR NE43 compliant) with a start up current of 10 µA typical and input overload rating of 50 mA max. Output load limit is 600Ω max with output load stability of <0.01% of span/100 Ω and voltage limit of 17.5V. Operating temperature range is -25 to 70°C. DIN rail type is EN 60715 – 35 mm with dimensions 113 x 6.1 x 115 mm.
Typical Applications
The DRSL-LPI-1 is commonly used in:
- Signal isolation between field transmitters and PLC analog input modules
- Ground loop elimination in long cable runs
- Transient and noise suppression in harsh electrical environments
- SCADA system data acquisition from remote sensors
- Floating signal measurement in control systems
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix/ControlLogix analog input modules
- Siemens S7-1200/S7-1500 analog inputs
- Mitsubishi FX/Q series PLCs with analog modules
- Any 4-20 mA input capable PLC or DCS system
- Current signal transmitters and field instruments
Replaces / Drop-In Replacement For
The DRSL-LPI-1 is a direct replacement for other single-channel input loop-powered isolators in the DRSL-LPI series. Verify compatibility with your system integrator before ordering if replacing other manufacturers’ isolator models.
Works With
- 4-20 mA current loop signal protocols
- 0-20 mA current inputs
- Standard PLC analog input cards and modules
- SCADA data acquisition systems
- Pressure, temperature, and flow transmitters with current output
