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Beckhoff EL1904 EtherCAT Safety Input Terminal for industrial automation

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Beckhoff EL1904

by Beckhoff

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OverviewThe Beckhoff EL1904 EtherCAT Safety Input Terminal is a vital component for modern industrial settings, meticulously engineered to protect both personnel and valuable equipment. This high-performance terminal seamlessly integrates into existing systems, offering reliable monitoring for various safety-related signals. With its four independent safe inputs, the EL1904 is perfectly suited for detecting critical safety functions such as emergency stops, safety gate statuses, and light curtain activation. Designed for demanding environments across manufacturing, robotics, and process automation, it ensures secure and continuous operation. Utilizing advanced integrated TwinSAFE logic and real-time EtherCAT communication, the EL1904 delivers exceptional speed and precision in data exchange. Its compact design and convenient DIN rail mounting make it an ideal choice for control cabinets with limited space, while its straightforward integration with Beckhoff TwinSAFE controllers simplifies overall system design and deployment. This terminal provides a strong foundation for developing highly secure and efficient automation solutions.Key Features Four Safe Inputs: Dedicated for precise monitoring of safety-critical signals, offering extensive protection. TwinSAFE Technology: Provides sophisticated, integrated safety functionality for high-integrity applications. Rapid EtherCAT Communication: Guarantees real-time data exchange, essential for swift responses in critical situations. Compact & DIN Rail Mountable: Maximizes control cabinet space through its efficient design and simple installation. Effortless Integration: Engineered to work smoothly with Beckhoff TwinSAFE controllers, streamlining your safety infrastructure. LED Diagnostics: Provides immediate visual feedback on operational status, aiding in quick issue identification and resolution. Technical Specifications Model: EL1904 Fieldbus Interface: EtherCAT Safe Inputs: 4 Safety Standard Compliance: IEC 61508, ISO 13489 Operating Voltage: 24V DC Connection Type: Push-in terminals Mounting Type: DIN Rail Protection Rating: IP20 Operating Temperature: -25°C to 60°C (-13°F to 140°F) Applications Machine Safety & Emergency Stop Systems: Essential input for guaranteeing the safe and immediate cessation of machinery operation. Industrial Automation & Robotics: Critical for monitoring safety signals in complex automated and robotic environments. Manufacturing & Process Control: Supports safety-critical applications by reliably detecting abnormal conditions and ensuring compliance. Material Handling & Logistics: Enhances safety system performance in automated warehouses and logistics centers. SCADA & PLC Safety Integration: Facilitates seamless integration with Beckhoff controllers and various supervisory control systems for a unified safety approach. Why ChooseThe Beckhoff EL1904 stands out as a premier choice for businesses prioritizing safety, efficiency, and reliability in their industrial operations. Its robust construction and adherence to strict safety standards such as IEC 61508 and ISO 13489 offer peace of mind, assuring that your systems are protected by a cutting-edge solution. The incorporation of TwinSAFE technology not only simplifies commissioning but also provides advanced diagnostics, minimizing downtime and maintenance efforts. With four safe inputs, it offers comprehensive monitoring capabilities for diverse safety applications. Furthermore, its ultra-fast EtherCAT communication ensures that safety interventions are immediate and effective, a crucial factor in preventing accidents and safeguarding valuable assets. Opting for the EL1904 means investing in a compact, durable, and easily installable terminal that integrates flawlessly with your existing Beckhoff TwinSAFE ecosystem. This ensures a consistent and high-performing safety architecture across your entire operation.Order NowEnhance your industrial safety with the Beckhoff EL1904 EtherCAT Safety Input Terminal. Contact Palm Parts Solution today to place your order and secure your operations.FAQWhat is the primary function of the Beckhoff EL1904?The Beckhoff EL1904 is an EtherCAT safety input terminal designed to monitor safety-related signals from various industrial equipment, such as emergency stops and safety gates, to protect personnel and machinery.How many safety inputs does the EL1904 have?The EL1904 features four independent safe inputs, allowing for comprehensive monitoring of multiple safety functions.What communication protocol does the EL1904 use?It utilizes EtherCAT for fast and real-time data exchange, which is critical for quick responses in safety-sensitive applications.Is the EL1904 easy to install?Yes, its compact design and DIN rail mountable feature make installation straightforward and efficient, especially in space-constrained control cabinets.Does this terminal integrate with other Beckhoff systems?Absolutely. The EL1904 is engineered for seamless integration with Beckhoff TwinSAFE controllers, simplifying the design and deployment of your safety architecture.

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PRODUCT DETAILS

Beckhoff EL1904

Overview

This is a genuine Beckhoff component from the EtherCAT Terminals family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Beckhoff catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Beckhoff automation ecosystem
  • Engineered to integrate inside EtherCAT Terminals installations

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Beckhoff equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Beckhoff catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Beckhoff platform with documented conversion notes for the EtherCAT Terminals family

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Model: EL1904
  • Fieldbus Interface: EtherCAT
  • Safe Inputs: 4
  • Safety Standard Compliance: IEC 61508, ISO 13489
  • Operating Voltage: 24V DC
  • Connection Type: Push-in terminals
  • Mounting Type: DIN Rail
  • Protection Rating: IP20
  • Operating Temperature: -25°C to 60°C (-13°F to 140°F)

Applications

  • Machine Safety & Emergency Stop Systems: Essential input for guaranteeing the safe and immediate cessation of machinery operation.
  • Industrial Automation & Robotics: Critical for monitoring safety signals in complex automated and robotic environments.
  • Manufacturing & Process Control: Supports safety-critical applications by reliably detecting abnormal conditions and ensuring compliance.
  • Material Handling & Logistics: Enhances safety system performance in automated warehouses and logistics centers.
  • SCADA & PLC Safety Integration: Facilitates seamless integration with Beckhoff controllers and various supervisory control systems for a unified safety approach.

Why Choose the EL1904?

The Beckhoff EL1904 stands out as a premier choice for businesses prioritizing safety, efficiency, and reliability in their industrial operations. Its robust construction and adherence to strict safety standards such as IEC 61508 and ISO 13489 offer peace of mind, assuring that your systems are protected by a cutting-edge solution. The incorporation of TwinSAFE technology not only simplifies commissioning but also provides advanced diagnostics, minimizing downtime and maintenance efforts. With four safe inputs, it offers comprehensive monitoring capabilities for diverse safety applications. Furthermore, its ultra-fast EtherCAT communication ensures that safety interventions are immediate and effective, a crucial factor in preventing accidents and safeguarding valuable assets. Opting for the EL1904 means investing in a compact, durable, and easily installable terminal that integrates flawlessly with your existing Beckhoff TwinSAFE ecosystem. This ensures a consistent and high-performing safety architecture across your entire operation.

Availability & Shipping

  • In stock: EL1904 ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every EL1904 ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Beckhoff

The Beckhoff EL1904 is an EtherCAT safety input terminal designed to monitor safety-related signals from various industrial equipment, such as emergency stops and safety gates, to protect personnel and machinery.

Machine down? We ship parts the same day.

New, surplus, and refurbished Beckhoff inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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