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RN Series: Reliable signal processing and conditioning

New interface components for reliable power supply, switching and signal doubling in safety systems

Publication date: 15.09.2021

Smart power

Smart functions such as NAMUR signal conversion, line fault monitoring, galvanic signal isolation, signal doubling, output signal amplification with bidirectional HART transparency give operators control and flexibility in systems of any scale, protecting assets and safeguarding data signal integrity in the process.

The RN Series at a glance

  • RN22: (RN42*): Active/passive barrier, signal doubler

  • RLN22: (RLN42*): NAMUR isolating amplifier

  • RNO22: Output isolating amplifier

  • RNB22: System power supply (single or redundant)

  • RNF22: Feed-in & error message module

* variant for wide range power supply (24-230 V AC/DC), available in Q4 2021

Typical application scenarios

2- and 4-wire (4 to 20 mA) instruments (e.g. Cerabar PMP71, Proline 200/300, ModuLine TM131, …)

  • RN22 active barrier, sensor supply with HART transparency

Data managers (e.g. Memograph M RSG45)

  • RN22 signal doubler

Point level switches (e.g. Liquiphant FTL51)

  • RLN22 or RLN42 NAMUR isolating amplifier

Active components (e.g. control valves, actuators)

  • RNO22 isolating output amplifier

RNB22 230 V/110 VAC to 24 VDC system power supply

  • RNF22 Feed-in & error message module, redundant power supply

Seamless system integration

All RN Series interface modules perfectly integrate with Endress+Hauser instruments, and work equally seamlessly with instruments from other vendors. The compact, space-saving housings with up to two channels on 12.5 mm are plug-and-play ready for standard DIN rails and control cabinets.

Independent of the industry, our offering promotes simplicity every step of the way: from easy selection and supply, to installation, commissioning, troubleshooting and service at all stages of the life cycle.

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