Endress+Hauser RN22 Operating Instructions Manual
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Endress+Hauser RN22 Operating Instructions Manual

1- or 2- channel active barrier for safe separation of 4 to 20 ma standard signal circuits, optionally available as a signal doubler. hart-transparent
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BA02004K/09/EN/01.20
71528972
2020-12-14
Products
Operating Instructions
RN22
1- or 2-channel active barrier for safe separation of 4 to
20 mA standard signal circuits, optionally available as a
signal doubler. HART-transparent
Solutions
Services

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  • Page 1 Products Solutions Services BA02004K/09/EN/01.20 71528972 2020-12-14 Operating Instructions RN22 1- or 2-channel active barrier for safe separation of 4 to 20 mA standard signal circuits, optionally available as a signal doubler. HART-transparent...

  • Page 2: Table Of Contents

    12.8 Mechanical construction ....Product description RN22 ....7 12.9 Display and operating elements .

  • Page 3: About This Document

    RN22 About this document About this document Document function These Operating Instructions contain all the information that is required in various phases of the life cycle of the device: from product identification, incoming acceptance and storage, to mounting, connection, operation and commissioning through to troubleshooting, maintenance and disposal.

  • Page 4: Registered Trademarks

    About this document RN22 1.2.3 Electrical symbols Direct current Alternating current Direct current and alternating current Ground connection A grounded terminal which, as far as the operator is concerned, is grounded via a grounding system. 1.2.4 Symbols in graphics 1, 2, 3,...

  • Page 5: Basic Safety Instructions

    RN22 Basic safety instructions Basic safety instructions Requirements for the personnel The personnel for installation, commissioning, diagnostics and maintenance must fulfill the following requirements: ‣ Trained, qualified specialists must have a relevant qualification for this specific function and task. ‣...

  • Page 6: Product Safety

    Basic safety instructions RN22 ‣ Observe federal/national regulations pertaining to the repair of an electrical device. ‣ Use only original spare parts and accessories from the manufacturer. Hazardous area To eliminate danger to persons or the facility when the device is used in the hazardous area (e.g.

  • Page 7: Product Descriptions

    RN22 Product descriptions Product descriptions Product description RN22 3.1.1 Product design Active barrier, 1-channel • The active barrier is used for the transmission and galvanic isolation of 0/4 to 20 mA signals. The device has an active/passive current input to which a 2- or 4-wire transmitter can be directly connected.

  • Page 8: Product Identification

    (www.endress.com/deviceviewer): all data relating to the device and an overview of the Technical Documentation supplied with the device are displayed. • Enter the serial number on the nameplate into the Endress+Hauser Operations App or scan the 2-D matrix code (QR code) on the nameplate with the Endress+Hauser Operations App: all the information about the device and the technical documentation pertaining to the device is displayed.

  • Page 9: Scope Of Delivery

    RN22 Installation Scope of delivery The scope of delivery comprises: • Device as per order • Printed copy of the Brief Operating Instructions • Optional: Functional safety manual (SIL mode) • Additional documentation for devices which are suitable for use in the hazardous area 1), such as Safety Instructions (XA...), Control or Installation Drawings (ZD...).

  • Page 10: Installing The Din Rail Bus Connector

    Installation RN22 Installing the DIN rail bus connector If using the DIN rail bus connector for the power supply, clip it onto the DIN rail BEFORE mounting the device. Pay attention to the orientation of the module and DIN rail bus connector when doing so: the snap-on clip should be at the bottom and the...

  • Page 11: Disassembling The Din Rail Device

    RN22 Electrical connection Disassembling the DIN rail device A0039696  4 Disassembling the DIN rail device 1. Insert a screwdriver into the tab of the DIN rail clip. 2. Use the screwdriver to pull down on the DIN rail clip as shown in the diagram.

  • Page 12: Quick Wiring Guide

    Electrical connection RN22 Quick wiring guide +24V +24V +24V +24V n.c. n.c. n.c. n.c. n.c. n.c. HART HART 4.1 4.2 5.1 4.2 5.1 6.1 6.2 5.2 A0040202  6 Terminal assignment: 1- and 2-channel version (left), signal doubler (right) HART communicators can be connected to the HART connecting points. Ensure an adequate external resistance (≥230 Ω) in the output circuit.

  • Page 13: Post-Connection Check

    RN22 Electrical connection Post-connection check Device condition and specifications Notes Are the device or cables free from damage (visual check)? Do the ambient conditions match the device See "Technical data" specification (e.g. ambient temperature, measuring range, etc.)? Electrical connection Notes Does the supply voltage match the specifications on Active barrier: U = e.g.

  • Page 14: Operation Options

    Operation options RN22 Operation options Display and operating elements A0040188  7 Display and operating elements Plug-in screw or push-in terminal Green LED "On", power supply Connection lugs for HART communication (channel 1) Connection lugs for HART communication (channel 2, option)

  • Page 15: Diagnostics And Troubleshooting

    RN22 Diagnostics and troubleshooting Diagnostics and troubleshooting General troubleshooting Always start troubleshooting with the checklists below if faults occur after startup or during operation. The checklists take you directly (via various queries) to the cause of the problem and the appropriate remedial measures.

  • Page 16: Spare Parts

    Technical data 12.1 Function and system design Product description RN22 Product design Active barrier, 1-channel • The active barrier is used for the transmission and galvanic isolation of 0/4 to 20 mA signals. The device has an active/passive current input to which a 2- or 4-wire transmitter can be directly connected.

  • Page 17: Input

    RN22 Technical data Active barrier, 2-channel With the "2-channel" option, the device has a second channel, which is galvanically isolated from channel 1, while maintaining the same width. Otherwise, the function corresponds to the 1-channel device. Active barrier as signal doubler With the signal doubler option, the active barrier is used for the galvanic isolation of a 0/4 to 20 mA signal, which is transmitted to two galvanically isolated outputs.

  • Page 18: Power Supply

    Technical data RN22 Ex connection data See associated XA Safety Instructions Galvanic isolation Power supply / input; power supply / output Testing voltage: 3 000 V 50 Hz, 1 min Input / output; output / output Input / input Testing voltage: 500 V 50 Hz, 1 min 12.4...
  • Page 19 RN22 Technical data Performance characteristics Power supply Supply voltage 24 V (-20% / +25%) Supply current to the DIN rail bus max. 400 mA connector Power consumption at 24 V 1-channel: ≤ 1.5 W (20 mA) / ≤ 1.6 W (22 mA) 2-channel: ≤...

  • Page 20: Performance Characteristics

    Technical data RN22 12.5 Performance characteristics Response time Step response (10 to 90 %) ≤ 1 ms Step response (10 to 90 %) signal doubler output 2 ≤ 50 ms HART filter Reference operating • Calibration temperature: +25 °C ±3 K (77 °F ±5.4 °F) conditions •...

  • Page 21: Environment

    RN22 Technical data A0041736  10 Installing on DIN rail 1. Position the top DIN rail groove at the top end of the DIN rail. 2. While holding the front of the device horizontally, lower it until you hear the locking clip of the device click into place on the DIN rail.

  • Page 22: Mechanical Construction

    Technical data RN22 12.8 Mechanical construction Design, dimensions Dimensions in mm (in) Terminal housing for mounting on DIN rail A0044417 Width (B) x length (L) x height (H) (with terminals): 12.5 mm (0.49 in) x 116 mm (4.57 in) x 107.5 mm (4.23 in)

  • Page 23: Display And Operating Elements

    • Depending on the device: Direct input of measuring point-specific information such as measuring range or operating language • Automatic verification of exclusion criteria • Automatic creation of the order code and its breakdown in PDF or Excel output format • Ability to order directly in the Endress+Hauser Online Shop Endress+Hauser...

  • Page 24: 12.11 Accessories

    Various accessories, which can be ordered with the device or subsequently from Endress +Hauser, are available for the device. Detailed information on the order code in question is available from your local Endress+Hauser sales center or on the product page of the Endress+Hauser website: www.endress.com.

  • Page 25: 12.13 Supplementary Documentation

    • W@M Device Viewer (www.endress.com/deviceviewer): Enter the serial number from nameplate • Endress+Hauser Operations App: Enter the serial number from the nameplate or scan the 2D matrix code (QR code) on the nameplate Brief Operating Instructions Guide that takes you quickly to the 1st measured value...

  • Page 26: Appendix: System Overview Of Rn

    It can be very time-consuming to wire each device individually, particularly if many devices are used. For this reason, Endress+Hauser offers its customers the option of powering a complete standard DIN rail, fitted with isolating amplifiers, via a single power supply terminal - the "DIN rail bus connector".
  • Page 27 Instructions to determine the current consumption of the devices. This is 70 mA per device for the RN22 active barriers (1-channel), and 35 mA per device in the case of the RLN22 NAMUR isolating amplifiers (2-channel). The total current consumption must then be determined using the following formula: ·...
  • Page 28 Device (24 V Current consumption per device Number of devices Total current consumption (mA) (mA) RN22 signal doubler RLN22 1-channel RLN22 2-channel RNO22 1-channel RNO22 2-channel Imax: 400 mA The total current consumption of 385 mA is less than the maximum permitted current of 400 mA.
  • Page 29 Example: power feed-in via redundant RNB22 system power supply and one RNF22 power module You wish to supply power to 15 RN22 active barriers (1-channel), 5 RN22 active barriers (2-channel), 3 RN22 signal doublers, 12 RLN22 NAMUR isolating amplifiers (1-channel)
  • Page 30 Number of devices Total current consumption (mA) (mA) RN22 1-channel 1050 RN22 2-channel RN22 signal doubler RLN22 1-channel RLN22 2-channel RNO22 1-channel RNO22 2-channel Imax: 2 500 mA 2477 The total current consumption of 2 477 mA is less than the nominal current (I =2.5 A) of...
  • Page 31 For the intrinsically safe RN22 active barriers this is 70 mA (1-channel) and 130 mA (2-channel) per device, 100 mA for the RN22 signal doubler, 21 mA for the RLN22 NAMUR isolating amplifier (1-channel) and 45 mA in the case of the RLN22 (2- channel).

  • Page 32: Applications Of The Rn Series Devices

    • Supply of electrical power to connected sensors • Line monitoring The devices for these tasks are collectively known as isolating amplifiers or signal isolators and are available with different functions in the Endress+Hauser RN Series. Different types of signals are conditioned in this context. 13.2.1...
  • Page 33 • The passive 2-wire PMP71B sensor supplies a current signal, which is proportional to the pressure, to the active input of the RN22 active barrier • The RN22 active barrier supplies an active current output signal, which is proportional to the input signal, to a passive input of the evaluation unit...
  • Page 34 • The active 4-wire Promag P300 sensor supplies a current signal, which is proportional to the flow, to the passive input of the isolating amplifier • The RN22 active barrier supplies a passive current output signal, which is proportional to the input signal, to an active input of the evaluation unit...
  • Page 35 • The RN22 signal doubler supplies the HART signal and an active current output signal, which is proportional to the input signal, to a passive input of the RSG45 data manager •...
  • Page 36 Appendix: system overview of RN Series RN22 NAMUR sensors can adopt four states at the output: • Current 0 mA: wire break; circuit open • Current <1.2 mA: sensor ready, undamped • Current >2.1 mA: sensor ready, damped • Current maximum value >6 mA: short-circuit, maximum current A common application of NAMUR sensors is limit value monitoring in process automation.
  • Page 37 RN22 Appendix: system overview of RN Series FTE20 RLN22 Resistive coupler Output Input (binary) (1.2 or 2.1 mA) Fault Power supply 24 V DC signal A0045583  21 NAMUR limit detection with FTE20 paddle switch with line monitoring in the hazardous area...
  • Page 38 Appendix: system overview of RN Series RN22 Control valve RNO22 0/4…20 mA 0/4…20 mA Output Input (active) (passive) Power supply 24 V DC A0045585  23 Control valve activation in the hazardous area with an RNO22 output isolating amplifier Endress+Hauser...

  • Page 39: Index

    RN22 Index Index Accessories Device-specific ......24 CE mark ........6 Declaration of Conformity .
  • Page 40 *71528972* 71528972 www.addresses.endress.com...

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