EL1814 EtherCAT Terminal: 4-Channel Digital Input for Fast, Isolated Control
The BECKHOFF EL1814 is a 4-channel digital input terminal for EtherCAT systems. It captures binary 24 V DC control signals from the process level. Then it sends them to the automation unit with electrical isolation. The input filter is only 10 µs. This makes it fast for inductive or capacitive sensors. The terminal uses a 3-wire connection and supports EN 61131-2 type 1/3 input specifications. Power contacts pass through. The reference ground for all inputs is the 0 V power contact.
Key Technical Data
- Model: BECKHOFF EL1814
- Brand: Beckhoff
- Series: EtherCAT Terminal
- Inputs: 4 digital channels
- Nominal voltage: 24 V DC (-15% / +20%)
- Input filter: typ. 10 µs
- Signal “0”: -3 to +5 V
- Signal “1”: 11 to 30 V
- Input current: typ. 3 mA
- Isolation: 500 V (E-bus / field potential)
- E-bus current: typ. 90 mA
- Power contact current: typ. 2 mA + load
- Weight: approx. 60 g
Environmental and Mechanical Ratings
- Operating temperature: -25 to +60 °C
- Storage temperature: -40 to +85 °C
- Humidity: 95% relative, no condensation
- Vibration / shock: EN 60068-2-6 / EN 60068-2-27
- EMC immunity / emission: EN 61000-6-2 / EN 61000-6-4
- Protection rating: IP20
- Installation position: variable (see documentation)
- Approvals: CE, UL, ATEX
- Ex marking: II 3 G Ex nA IIC T4 Gc
Housing and Wiring Details
- Design: HD (High Density) housing with signal LEDs
- Material: polycarbonate
- Dimensions (W x H x D): 12 mm x 100 mm x 68 mm
- Mounting: 35 mm DIN rail per EN 60715 with lock
- Side-by-side mounting: double slot and key connection
- Marking: BZxxx series labeling
- Wiring: solid wire direct plug-in; fine-stranded with ferrule uses spring actuation by screwdriver
- Connection cross-section solid: 0.08 to 1.5 mm² (AWG 28 to 16)
- Connection cross-section stranded: 0.25 to 1.5 mm² (AWG 22 to 16)
- Connection cross-section with ferrule: 0.14 to 0.75 mm² (AWG 26 to 19)
- Stripping length: 8 to 9 mm
- Power contact current load: max. 10 A
Oiltech Controls Review
Oiltech Controls supplies the EL1814 for engineers who need fast digital input in EtherCAT networks. The 10 µs filter is useful for high-speed sensor signals. The 3-wire design and 16 connection points in a 12 mm housing save panel space. This terminal fits systems that use inductive or capacitive sensors. It also works in legacy machines where a compact, isolated input module is required.
Oiltech Controls’s Insight
- The EL1814 is a good choice for fast binary signal capture.
- Use it with 24 V DC sensors that need a short input delay.
- The HD housing helps when DIN rail space is limited.
- ATEX and UL approvals support use in hazardous and industrial areas.
- No address or configuration setting is needed. It is plug-and-play in the EtherCAT system.
Compatible Equipment and Applications
- EtherCAT masters and controllers
- Inductive proximity sensors
- Capacitive sensors
- Machine control panels
- Process automation cabinets
- Legacy systems that need a compact digital input terminal
Why Buy From Oiltech Controls?
- Over 15 years in industrial automation spare parts.
- Worldwide shipping through FedEx, UPS, and DHL.
- Tested surplus and refurbished options available.
- 12-month warranty on qualifying products.
- Technical check before every shipment.
- Support for obsolete control systems and hard-to-find parts.
Shipping, Warranty, and Contact
- Warranty: 12 months from shipment date.
- Dispatch: ships in 24 to 28 hours after technical verification.
- Carriers: FedEx, UPS, and DHL. Tracking provided.
- Email: info@oiltechcontrols.com
- WhatsApp: +86 158 8020 0923
Professional FAQ
Q: Can the EL1814 work with both solid and stranded wire?
A: Yes. Solid wire uses direct plug-in. Stranded wire and ferrules use spring actuation by screwdriver. The stripping length is 8 to 9 mm.
Q: What makes the 10 µs input filter useful?
A: It captures fast sensor pulses with low delay. This helps when the machine cycle is short or when the sensor signal changes quickly.
Q: Is the EL1814 suitable for hazardous areas?
A: Yes. It carries ATEX marking II 3 G Ex nA IIC T4 Gc. It also has CE and UL approvals.
Q: Do I need to set an address or configuration?
A: No. The terminal has no address or configuration setting. The EtherCAT master detects it automatically.
Q: How do I choose between the EL1814 and a standard digital input terminal?
A: Choose the EL1814 when you need a 10 µs filter, 3-wire connection, and high packing density. Choose a standard terminal when speed is less critical and you want lower cost.
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