Machine Safety & EtherCAT I/O Solution – Beckhoff EK1914 | EK Series
The Beckhoff EK1914 is a dedicated EtherCAT Bus Coupler engineered for safety-rated I/O terminal networks. It bridges standard EtherCAT fieldbus infrastructure with TwinSAFE-compatible safety terminals, enabling engineers to build compact, certified safety architectures directly within the EtherCAT I/O slice system — without a separate safety PLC cabinet.
Where This Product Is Used
- Machine Safety Systems: Emergency stop, light curtain, and two-hand control circuits in press, stamping, and packaging machinery.
- Collaborative Robot (Cobot) Cells: Safety-rated zone monitoring and speed/force limiting in human-robot collaboration setups.
- Process Plant Safety Loops: SIL 2-rated shutdown loops in chemical dosing, water treatment, and oil & gas skids.
- Automotive Assembly Lines: Guarding interlock and door monitoring on transfer lines and welding stations.
- Conveyor & Sortation Systems: Safe stop and safe limited speed functions on high-speed logistics conveyors.
- Wind Turbine Control Cabinets: Safety I/O integration within EtherCAT-based turbine controllers.
Technical Specifications
- Part Number / SKU: EK1914
- Manufacturer: Beckhoff Automation
- Series: EK Series – EtherCAT Bus Couplers
- Function: EtherCAT Bus Coupler for TwinSAFE Safety I/O Terminals
- Safety Rating: TwinSAFE – up to SIL 3 (IEC 62061) / PLe Cat 4 (ISO 13849-1)
- EtherCAT Interface: 2 × RJ45 (100BASE-TX, auto-crossover)
- Power Supply: 24 V DC (–15% / +20%)
- Max. I/O Terminals: Up to 65,535 EtherCAT terminals per segment
- Housing: DIN rail mount, IP20
- Operating Temperature: 0 °C … +55 °C
- Dimensions (W × H × D): 44 mm × 100 mm × 68 mm
- Weight: approx. 200 g
- Certifications: CE, UL, cULus, TÜV, ATEX (Zone 2/22)
Why Engineers Specify This Model
- Unified I/O Architecture: Combines standard and safety I/O on a single EtherCAT backplane — no separate safety bus wiring.
- TwinSAFE Native: Seamlessly integrates with EL1904, EL2904, EL6910 and other TwinSAFE terminals without additional gateways.
- Compact Footprint: 44 mm wide slice format minimises cabinet space versus standalone safety relays or safety PLCs.
- High Availability: EtherCAT hot-connect topology allows segment replacement without full system shutdown.
- TwinCAT 3 Integration: Fully configurable in TwinCAT 3 Safety Editor; safety logic runs on the same IPC as motion and PLC tasks.
- Broad Certification: CE, UL, TÜV, and ATEX Zone 2 cover global machine builder requirements in one part number.
Complete System Bill of Materials
- EK1914 – EtherCAT Safety Bus Coupler (this item)
- EL1904 – 4-channel TwinSAFE digital input terminal (24 V DC)
- EL2904 – 4-channel TwinSAFE digital output terminal (24 V DC, 0.5 A)
- EL6910 – TwinSAFE Logic terminal (replaces EL6900 for complex safety programs)
- EK1100 – Standard EtherCAT Bus Coupler (for non-safety I/O segments)
- CX5130 / CX5140 – Embedded PC with TwinCAT 3 for safety program execution
- ZK1090-3191-xxxx – EtherCAT patch cable (pre-assembled, various lengths)
Compliance & Industry Standards
- IEC 62061 – Safety of machinery: Functional safety up to SIL 3
- ISO 13849-1 – Safety-related parts of control systems up to PLe / Cat 4
- IEC 61508 – Functional safety of E/E/PE safety-related systems
- IEC 61131-2 – Programmable controllers: Equipment requirements
- EN 60068-2 – Environmental testing (vibration, shock, temperature)
- ATEX Directive 2014/34/EU – Zone 2 / Zone 22 explosive atmospheres
- UL 508 / cULus – Industrial control equipment (North America)
Quality Assurance & Sourcing
Every EK1914 unit supplied by Konmask.com is sourced through verified industrial distribution channels. Each module undergoes incoming inspection including visual check, label verification, and functional power-on test before dispatch. We provide full traceability documentation on request and offer a 12-month warranty against manufacturing defects. Expedited DHL/FedEx international shipping is available with same-day dispatch for in-stock units.
How to Source This Part
- Online: Add to cart directly on this page — secure checkout with T/T, PayPal, and credit card accepted.
- RFQ / Bulk Orders: Email support@konmask.com with quantity and required delivery date for a volume quote.
- Urgent Requirements: Call/WhatsApp +0086 19859288691 for same-day stock confirmation and express shipping options.
- Lead Time: In-stock units ship within 1 business day; non-stock items typically 3–7 business days.
Application-Specific FAQ
Q: Can the EK1914 replace the EK1100 in an existing EtherCAT segment?
A: Yes — the EK1914 is pin- and DIN-rail-compatible with the EK1100 form factor. However, it is specifically required when TwinSAFE terminals (EL1904, EL2904, EL6910, etc.) are present in the segment, as it provides the safety-rated coupler logic those terminals depend on.
Q: How many TwinSAFE terminals can one EK1914 support?
A: Beckhoff recommends a maximum of 128 TwinSAFE terminals per EK1914 segment for optimal cycle time performance, though the EtherCAT protocol itself supports far more.
Q: Is TwinCAT 3 mandatory for programming the EK1914?
A: Yes. Safety logic for TwinSAFE terminals connected via EK1914 must be programmed using the TwinCAT 3 Safety Editor (TE9000). Third-party IEC 61131-3 tools are not supported for the safety layer.
Q: What is the difference between EK1914 and EK1122?
A: The EK1122 is a standard 2-port EtherCAT junction for topology branching with no safety capability. The EK1914 is a full bus coupler with integrated TwinSAFE support — they serve different architectural roles.
Q: Does the EK1914 support PROFINET or PROFIBUS?
A: No. The EK1914 is an EtherCAT-native device. For PROFINET integration, Beckhoff offers the EK9300 (PROFINET I/O Device coupler) as a separate product line.
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