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RNF22 power feed-in and error message module

RNF22 Power and error message module 24 V DC

Power and error message module for single or redundant 24 V DC power supply to the T-connector, with error message monitoring

RNF22
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5-year warranty

Engineered for Confidence

Our Fundamental Selection instruments feature an extended 5-year warranty – a clear testament of our trust in their long-term reliability and performance.

Should a warranty case occur, you can count on a fast replacement process and minimal administrative effort – giving you peace of mind when it matters most and helping you keep your operations running smoothly.

Warranty terms apply

The extended warranty is subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

RNF22 power and error message interface module
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©Endress+Hauser

RNF22 power feed-in and error message module, 24 V DC with relay output

RN Series interfaces with the RNF22 power feed-in and error message module
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©Endress+Hauser

RN Series interface devices with the RNF22 power feed-in and error message module

The RN Series interface devices with RNF22 power module installed in a control cabinet
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©Endress+Hauser

RN Series interface devices with RNF22 power module being commissioned

RNF22 power feed-in and error message module, 24 V DC with relay output

Specs at a glance

  • Input

    24 V DC

  • Output

    Uin - 0,8 V

  • Power Supply

    24 V DC

Field of application

The RNF22 is a power and error message module that provides a redundant 24 VDC supply voltage to the DIN rail interface bus connector system for safe operations in hazardous areas. Intelligent error diagnostics alert of power supply failure, NAMUR group error messages or fuse error via a relay contact and a flashing LED. The compact interface module is protected against overvoltage and reverse polarity via diode decoupling.

  • Power and error message module for safe and reliable operation in hazardous areas, power supply up to 3.75 A

  • Choice of single or redundant supply of the supply voltage 24 VDC via the DIN rail bus connector

  • Relay output for error message

  • Group error evaluation of the connected NAMUR isolating amplifiers (RLN22)

  • Activation/deactivation of group error detection via DIP switch

  • Optionally available with Ex approval for installation in Ex zone 2

  • For ambient temperatures –20 to 60 °C (–4 to 140 °F)

Benefits

  • Safe and reliable 24 VDC supply voltage feed, single or redundant

  • Integrated intelligent error evaluation reports auxiliary power supply failure or fuse error

  • Quick and easy wiring using pluggable screw or push-in terminals, protected against polarity reversal

  • Compact housing: 17.5 mm (0.69 in) for efficient use of space in control cabinets

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