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RNF22 power feed-in/error message module

Power feed-in/error message module for simple and redundant 24 V DC supply to T-connector with fault message monitoring

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RNF22 power feed-in/error message module

Power feed-in/error message module for simple and redundant 24 V DC supply to T-connector with fault message monitoring

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Benefits

  • Safe and reliable 24 VDC interface power supply, single or redundant
  • Intelligent diagnostics built-in: power supply failure or fuse error
  • Quick and easy wiring with plug-in terminals
  • Compact housing: 17.5 mm (0.69 in) for efficient use of space in control cabinets
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RNF22 power feed-in/error message module

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5-year warranty

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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.

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Product information

RNF22 power feed-in and error message module
RNF22
Specifications
Measuring / Application task Power supplies & barrier
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Description

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.

Field of application
  • Power and error message module for safe and reliable operations in hazardous areas
  • Single or redundant 24 VDC supply voltage, up to 3.75 A supply current
  • Relay output for error message
  • Group error evaluation of connected NAMUR isolating amplifiers (RLN22)
  • Activation/deactivation of group error detection via DIP switch
  • Ambient temperature range: –20 to 60 °C (–4 to 140 °F)
Benefits
  • Safe and reliable 24 VDC interface power supply, single or redundant
  • Intelligent diagnostics built-in: power supply failure or fuse error
  • Quick and easy wiring with plug-in terminals
  • Compact housing: 17.5 mm (0.69 in) for efficient use of space in control cabinets
Downloads
Most downloaded
Operating Instruction (BA)
RNF22 Power and error message module 24 V DC
English version - 10/2021
Download
Technical Information (TI)
RNF22 Power and error message module 24 V DC
English version - 10/2021
Download
Short Instruction (KA)
KA RNF22 Power and error message module 24 V<sub>DC</sub>
English version - 12/2022
Download
The CAD Drawings will be available after the configuration.
All downloads
20 Downloads
Technical Information (TI)
Most downloaded
RNF22 Power and error message module 24 V DC
English version - 10/2021
Download
Operating Instruction (BA)
Most downloaded
RNF22 Power and error message module 24 V DC
English version - 10/2021
Download
Short Instruction (KA)
KA RNF22 Power and error message module 24 V<sub>DC</sub>
English version - 12/2022
Download
Ex Safety Instruction (XA)
RNF22 Power and error message module CONTROL/INSTALLATION DRAWING for explosion hazardous areas according to Dir. 2014/34/EU (ATEX) ATEX: ATEX II 3 G Ex nA nC IIC Gc
IECEx: IECEx II 3 G Ex nA nC IIC Gc
English version - 01/2021
Download
Special Documentation (SD)
Device viewer Technical documentation in other languages
English version - 07/2021
Download
Fields of Activities (FA)
コンポーネントカタログ HAW562-
HAW569-
MS20-
MS21-
RA33-
RB223-
RDL10-
READWIN-
RH33-
RIA14-
RIA15-
RIA16-
RIA45-
RIA452-
RIA46-
RID14-
RID16-
RID261-
RLN22-
RLN42-
RMA42-
RMC621-
RMS621-
RN22-
RN221N-
RN42-
RNB22-
RNF22-
RNO22-
RS33-
RSG30-
RSG35-
RSG40-
RSG45-
RXO20
Japanese version - 08/2022
Download
Fields of Activities (FA)
시스템 제품 및 데이터 관리자 - 시그널 루프 구성 솔루션 시스템 제품 및 데이터 관리자 - 시그널 루프 구성 솔루션
Korean version - 03/2024
Download
Fields of Activities (FA)
System products and data managers Solutions to complete your measuring point
English version - 09/2026
Download
Fields of Activities (FA)
Systemprodukte und Datenmanager Lösungen zur Vervollständigung Ihrer Messstelle
German version - 09/2026
Download
Innovation (IN)
RN Series Zuverlässige Signalverarbeitung und -aufbereitung Spannungsversorgungen, Speisetrenner und
Trennschaltverstärker für Sensoren und
analoge Signale
German version - 06/2023
Download
Innovation (IN)
RN 시리즈 - 신뢰할 수 있는 신호 처리 및 조절 보장 RN시리즈 - 신뢰할 수 있는 신호 처리 및 조절 보장
Korean version - 09/2021
Download
Innovation (IN)
Innovation brochure about the RN Series RN Series - Reliable signal processing and conditioning
English version - 06/2023
Download
Innovation (IN)
RN Series Traitement et conditionnement fiable des signaux
French version - 09/2021
Download
AI (Application note)
Saving energy with smart e-boiler monitoring Boosting sustainability with real-time energy insights
English version - 12/2025
Download
AI (Application note)
Energie sparen mit intelligenter E-Boiler Überwachung Mehr Nachhaltigkeit durch Echtzeit-Energieüberwachung
German version - 12/2025
Download
Manufacturer Declaration
Product family: Accessories: System components, Contactors/transmitters, Ecograph, Memo-Graph, Over voltage protector, Power supply and barrier, Process displays, Soliswitch Product root: FMA90-, FTE20-, HAW566-, HAW568-, RA33-, RB223-, RH33-, RIA14-, RIA15-, RIA16-, RIA45-, RIA452-, RIA46-, RID14-, RID16
-, RLN22-, RLN42-, RMA42-, RN22-, RN42-, RNF22-, RNO22-, RS33-, RSG35-, RSG45-
Declaration number: HE_02283_01.25
Manufacturer specification: RoHS
Additional information: China RoHS
English version - 11/2025
Download
EU Declaration
Product family: Accessories: System components Product root: RNF22-
Declaration number: EC_00923_01.21
English version - 06/2021
Download
EU Declaration
Product family: Accessories: System components Product root: RNF22-
Declaration number: UK_00416_01.21
English version - 05/2022
Download
UK Conformity Assessed
Product family: Accessories: System components Product root: RNF22-
Declaration number: UK_00468_01.21
English version - 12/2021
Download
Explosion Protection
Product family: Accessories: System components Product root: RNF22-
Region: International (IECEx)
Approval agency: IBExU
Protection: Ex ec nC IIC T4 Gc
English version - 06/2021
Download

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Spare parts and accessories

further parts
further parts

Terminal set 3pol. DIN rail screw

further parts
further parts
Order code 71505345
further parts
further parts

Terminal set 3pol. DIN rail push-in

further parts
further parts
Order code 71505346
further parts
further parts

Flap 17.5 W25 DIN rail housing

further parts
further parts
Order code 71505348

Power rail connector DIN rail 17.5mm

Order code 71505352
Spare parts and accessories
RNF22 power feed-in and error message module
RNF22

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Spare parts and accessories

further parts
further parts

Terminal set 3pol. DIN rail screw

further parts
further parts
Order code 71505345
further parts
further parts

Terminal set 3pol. DIN rail push-in

further parts
further parts
Order code 71505346
further parts
further parts

Flap 17.5 W25 DIN rail housing

further parts
further parts
Order code 71505348

Power rail connector DIN rail 17.5mm

Order code 71505352
Spare parts and accessories