WAGO 787-3861/004-1020 Manual
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WAGO 787-3861/004-1020 Manual

WAGO 787-3861/004-1020 Manual

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Electronic WAGO Circuit Breaker
1-channel; 24 VDC; 0.5 ... 4 A; NEC Class 2
787-3861/004-1020
Product manual | Version 1.0.0
/WAGO/
WAGO

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Summary of Contents for WAGO 787-3861/004-1020

  • Page 1 Electronic WAGO Circuit Breaker 1-channel; 24 VDC; 0.5 … 4 A; NEC Class 2 787-3861/004-1020 Product manual | Version 1.0.0 /WAGO/ WAGO...
  • Page 2 We wish to point out that the software and hardware terms as well as the trademarks of companies used and/or mentioned in the present manual are generally protected by trademark or patent. WAGO is a registered trademark of WAGO Verwaltungsgesellschaft mbH. Product manual | Version: 1.0.0 Electronic Circuit Breaker...

  • Page 3: Table Of Contents

    787-3861/004-1020 Table of Contents Table of Contents 1 Provisions ........................ 5 Intended Use ...................... 5 Typographical Conventions .................. 6 Definitions ........................  7 Legal Information .....................  8 2 Safety .......................... 9 General Safety Regulations.................. 9 Electrical Safety .......................  9 Mechanical Safety .................... 9 Thermal Safety ......................
  • Page 4 Table of Contents 787-3861/004-1020 6 Transport and Storage .................... 32 7 Installation and Removal .................... 33 DIN-35 Rail ...................... 33 8 Diagnostics ........................ 35 Diagnostics via Indicators .................. 35 9 Configuration .........................  36 Configuration via Button .................. 36 10 Decommissioning ...................... 38 10.1 Disposal and Recycling ..................

  • Page 5: Provisions

    Warranty and Liability The provisions of the latest WAGO General Terms and Conditions of Deliveries and Ser- vices (GTC) apply as well as the Software License Terms for Standard Software (SW-Li- cense) applicable to software products und software embedded in WAGO hardware prod- ucts, both available at: ü www.wago.com.

  • Page 6: Typographical Conventions

    Provisions 787-3861/004-1020 Obligations of Installers/Operators The installers and operators bear responsibility for the safety of an installation or a sys- tem assembled with the product. The installer/operator is responsible for the proper in- stallation and safety of the system. All laws, standards, guidelines, local regulations and accepted technology standards and practices applicable at the time of installation, and the instructions in the the products’...
  • Page 7 787-3861/004-1020 Provisions Figures Figures in this documentation are for better understanding and may differ from the actual product design. Warning Messages DANGER Type and source of hazard Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

  • Page 8: Definitions

    1.4 Legal Information Intellectual property The intellectual property of this document belongs to WAGO GmbH & Co. KG. The repro- duction and distribution of its content (in whole or in part) is prohibited, unless otherwise provided by statutory provisions, written agreements or this document. In case of doubt, the written consent of WAGO GmbH &...

  • Page 9: Safety

    787-3861/004-1020 Safety 2 Safety 2.1 General Safety Regulations • This documentation is part of the product. Therefore, retain the documentation during the entire service life of the product. Pass on the documentation to any subsequent user of the product. In addition, ensure that any supplement to this documentation is included, if necessary.

  • Page 10: Thermal Safety

    • Replace any defective or damaged devices. • Observe possible different technical specifications for mounting that does not corre- spond to the nominal mounting position. • Only use accessories authorized by WAGO. Product manual | Version: 1.0.0 Electronic Circuit Breaker...

  • Page 11: Properties

    787-3861/004-1020 Properties 3 Properties The product reliably protects load circuits against short circuits and overloads. The 24 VDC input voltage can be variably protected by current values from 0.5 … 4 A. Version Fuse protection 787-3861/004-1020 0.5 … 4 A The electronics can accommodate brief current peaks.

  • Page 12: Connections

    Properties 787-3861/004-1020 Status LED Technical Data Snap-in mounting foot Button Marking Field Current dial 3.2 Connections Figure 2: Connections (Example View) S2 (signal output) Vin+ Vin+ S1 (control input) Vout+ Vout+ 3.3 Indicators The electronic circuit breaker has a status LED (a).

  • Page 13: Controls

    787-3861/004-1020 Properties Figure 3: Indicators Status LED Current dial Button 3.4 Controls 3.4.1 Current Dial The current dial is used to set the current value: • Turning it upward increases the current value. • Turning it downward decreases the current value.

  • Page 14: Technical Data

    Properties 787-3861/004-1020 3.5 Technical Data 3.5.1 Product Table 3: Technichal Data – Product Property Value Dimensions 6 mm x 94 mm x 97,8 mm; Width x Depth x Height from upper-edge of DIN-rail 0,236 in x 3,701 in x 3,85 in Weight 53,6 g Degree of protection IP20 3.5.2 Input...

  • Page 15: Safety

    787-3861/004-1020 Properties Property Value Series circuit Prohibited The power supply must be able to deliver the maximum required power without the voltage falling below 20 VDC. 8 Power Supplies [ } Verified connectable load capacities depend on the power supply used; see  39].

  • Page 16: Environmental Requirements

    Properties 787-3861/004-1020 3.5.6 Environmental Requirements Note At nominal current ≤ 4 A there is no ambient temperature restriction! For products with nominal current ≤ 4 A , there is no restriction of the ambient tempera- ture range in the form of derating. The devices in the specified range −25 … +70 °C can be fully used.

  • Page 17: Approvals

    Emission standard for residential, commercial and light-industrial environments For additional information, visit ü www.wago.com. 3.6.2 Approvals The applicable guidelines, approvals and standards for the product can be found on the product detail page at: ü www.wago.com/787-3861/004-1020. Product manual | Version: 1.0.0 Electronic Circuit Breaker...

  • Page 18: Functions

    Functions 787-3861/004-1020 4 Functions 4.1 Tripping in the Event of Overload Note Wait for temperature to return to normal! If a channel has tripped due to a short circuit or overload, it is necessary to wait until the temperature returns to its normal range before switching the channel back on.
  • Page 19 787-3861/004-1020 Functions Figure 5: Trip Characteristic – 0.5 A Figure 6: Trip Characteristic – 1 A Product manual | Version: 1.0.0 Electronic Circuit Breaker...
  • Page 20 Functions 787-3861/004-1020 Figure 7: Trip Characteristic – 1.5 A Figure 8: Trip Characteristic – 2 A Product manual | Version: 1.0.0 Electronic Circuit Breaker...
  • Page 21 787-3861/004-1020 Functions Figure 9: Trip Characteristic – 2.5 A Figure 10: Trip Characteristic – 3 A Product manual | Version: 1.0.0 Electronic Circuit Breaker...

  • Page 22: Conditions

    Functions 787-3861/004-1020 Figure 11: Trip Characteristic – 3.5 A Figure 12: Trip Characteristic – 4 A 4.2 Conditions Table 14: Channel Statuses State Channel LED State Explanation Status 0 Switched off Product initialization (boot process) Status 1 Switched on Green Load current < 90 % of nominal current Product manual | Version: 1.0.0...

  • Page 23: Undervoltage And Overvoltage Detection

    787-3861/004-1020 Functions State Channel LED State Explanation Status 2 Switched on Green, flashing (1 Hz) Load current > 90 % of nominal current Status 3 Switched on Green, flashing (5 Hz) Load current > 100 % of nominal current Status 4 Switched off Channel switched off man- ually or through control in- put S1.

  • Page 24: Capacitive Load

    For some WAGO power supply units, possible load capacities have been determined em- 8 Power Supplies pirically (see [} 39]).

  • Page 25: Control Input S1 And Signal Output S2

    787-3861/004-1020 Functions 4.6 Control Input S1 and Signal Output S2 Control Input S1 A signal (15 ... 30 V) between the control input and GND allows the status of the elec- tronic circuit breaker to be changed. Which status is produced depends on the signal du- ration and previous status of the ECB.

  • Page 26: Distributing And Multiplying A Potential

    Functions 787-3861/004-1020 Channel State Signal Output S2 Tripp Cur- Early Early Early External Tripped rent Monitor- Monitor- Monitor- relay and Man- Flow ing 90 % ing 80 % ing 70 % control ually Moni- Switched toring Status 1: Green 24 V 24 V 24 V 24 V 24 V...

  • Page 27: Commoning

    The respective products can be found as "related products" under 787-3861/004-1020. 4.7.2 Potential Distribution Module WAGO's Power Distribution Modules (PDM) allow parallel connection with multiple lines to the fused supply voltage and GND potential by expanding product connections V out+ (8 Connections...

  • Page 28: Planning

    • The component DIN-rail contact (CuSn6) must not form a galvanic element with the DIN-rail that is capable of generating a differential voltage of more than 0.5 V (saline solution of 0.3% at 20°C/68°F). WAGO DIN-rails meet the electrical and mechanical requirements. Table 18: WAGO DIN-Rails Item No.

  • Page 29: Connection Examples

    The resulting behavior of signal output S2 can be found in table “Signal Output S2 – Sig- naling,” column “External Relay Control” (see Signal Output S2). WAGO offers the following relays for both variants (connection example: relay and all- pole fuse): Table 19: Relay...
  • Page 30 Planning 787-3861/004-1020 Switching Off a Connected Load Circuit When Product Trips Figure 14: Connection Example: Relay Variant In this variant, the relay also switches off additional load circuits when the product has tripped. Product manual | Version: 1.0.0 Electronic Circuit Breaker...
  • Page 31 787-3861/004-1020 Planning Galvanic Isolation between Load Circuit and Input Potentials Figure 15: Connection Example: All-Pole Fuse Variant In this variant, two relays ensure that the load circuit is electrically isolated from the input potentials if the product has tripped. Product manual | Version: 1.0.0...

  • Page 32: Transport And Storage

    Transport and Storage 787-3861/004-1020 6 Transport and Storage The original packaging offers optimal protection during transport and storage. • Store the product in suitable packaging, preferably the original packaging. • Only transport the product in suitable containers/packaging. • Make sure the product contacts are not contaminated or damaged during packing or unpacking.

  • Page 33: Installation And Removal

    787-3861/004-1020 Installation and Removal 7 Installation and Removal NOTICE Avoid electrostatic discharge! The products are equipped with electronic components that you may destroy by electro- static discharge when you touch. Please observe the safety precautions against electro- static discharge in accordance with EN 61340-5-1/-3. Pay attention while handling the products to good grounding of the environment (persons, job and packing).
  • Page 34 Installation and Removal 787-3861/004-1020 Removal from the DIN-Rail Figure 17: Disassembly 1. To remove (see figure “Removal”), pull down the snap-in mounting foot (c) [1]. Use a screwdriver or an operating tool. 2. Tilt the product forward [2] and unhook it from the DIN-rail.

  • Page 35: Diagnostics

    787-3861/004-1020 Diagnostics 8 Diagnostics 8.1 Diagnostics via Indicators Table 20: General Operating Statuses Operating Status  LED State Level At Sig- Button Signal at Con- nal Output S2 Pushed trol Input S1 Status 0: 0 V Initialization of the product (boot process). Status 1: Green 24 V...

  • Page 36: Configuration

    Configuration 787-3861/004-1020 9 Configuration 9.1 Configuration via Button The button can be used to configure signal output S2: 1. Switch off the channel. ð The status LED lights up red. 2. Press and hold the button for at least 3 seconds.

  • Page 37: Table 21 Flash Codes For Configuration Via Button

    787-3861/004-1020 Configuration Figure 18: Configuration routine Table 21: Flash Codes for Configuration via Button Flash Code (x) Signal Output S2 Status LED Description Tripped Current flow monitoring Early warning 90 % Early warning 80 % Early warning 70 % Option: external relay control Tripped or manually switched off The blink code is put out cyclically: x pulses (LED green), followed by a break time of 1.5 s.

  • Page 38: Decommissioning

    Decommissioning 787-3861/004-1020 10 Decommissioning 10.1 Disposal and Recycling WEEE Mark Electrical and electronic equipment may not be disposed of with household waste. This also applies to products without this mark. Electrical and electronic equipment contain materials and substances that can be harmful to the environment and health.

  • Page 39: Appendix

    787-3861/004-1020 Appendix 11 Appendix 11.1 Power Supplies Table 22: Power Supplies Power Supply 10 mF 20 mF 30 mF 40 mF 50 mF Tested Comment Base But- But- But- But- But- Load 2787-2144 5 A (Pro 2) √ √ √ √ √ √ √ √ √ √...
  • Page 40 • EnOcean is a registered trademark of EnOcean GmbH. ® • flexROOM is a registered trademark of WAGO Verwaltungsgesellschaft mbH. • Google Play is a registered trademark of Google Inc. • IO-Link is a registered trademark of PROFIBUS Nutzerorganisation e.V.
  • Page 41 Undervoltage and Overvoltage Detection ................Table 16 Control Input S1 ......................... Table 17 Signal output S2 – Signaling....................Table 18 WAGO DIN-Rails ....................... Table 19 Relay..........................Table 20 General Operating Statuses ....................Table 21 Flash Codes for Configuration via Button .................
  • Page 42 List of Figures 787-3861/004-1020 List of Figures Figure 1 Example View ....................... Figure 2 Connections (Example View)..................Figure 3 Indicators ........................Figure 4 Trip Characteristic – Complete Overview ..............Figure 5 Trip Characteristic – 0.5 A .................... Figure 6 Trip Characteristic – 1 A ....................
  • Page 43 787-3861/004-1020 List of Figures Product manual | Version: 1.0.0 Electronic Circuit Breaker...
  • Page 44 WAGO is a registered trademark of WAGO Verwaltungsgesellschaft mbH. Copyright – WAGO GmbH & Co. KG – All rights reserved. The content and structure of the WAGO websites, catalogs, videos and other WAGO media are subject to copyright. Distri- bution or modification of the contents of these pages and videos is prohibited. Furthermore, the content may neither be copied nor made available to third parties for commercial pur-...

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