Product details
Product Overview
- Beckhoff EL1004-0020 – 4-channel digital input terminal
- Accepts 24 V DC binary signals from the process level
- Transmits signals to the higher-level automation unit with electrical isolation
- Input filter (3 ms) eliminates bouncing from mechanical switches
- Four LEDs indicate signal status per channel
- Regular delivery – in stock and ready to ship
Key Features
- Input type 1/3 per EN 61131-2
- 3 ms input filter – no switch bounce
- Direct connection for four 2-wire sensors
- 2500 V DC isolation (E-bus / field potential)
- Compact 12 mm terminal housing with signal LEDs
- Spring connection by screwdriver – tool-free wiring
Technical Specifications
- Brand: Beckhoff
- Model: EL1004-0020
- Series: EL1004 digital input series
- Input channels: 4 (2-wire)
- Nominal voltage: 24 V DC (-15 % / +20 %)
- Signal “0” voltage: -3 … +5 V (type 3)
- Signal “1” voltage: 11 … 30 V (type 3)
- Input current: typ. 3 mA (type 3)
- Input filter: typ. 3.0 ms
- Distributed clocks: not supported
- Isolation voltage: 2500 V DC (E-bus/field)
- Current consumption E-bus: typ. 90 mA
- Current consumption power contacts: typ. 2 mA + load
- Weight: approx. 50 g
- Operating temperature: 0 … +55 °C
- Storage temperature: -25 … +85 °C
- Relative humidity: 95 % (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
- Housing material: polycarbonate
- Dimensions (W x H x D): 12 mm x 100 mm x 68 mm
- Mounting: 35 mm DIN rail (EN 60715)
- Connection cross-section (solid/stranded/ferrule): 0.08…2.5 mm² / 0.08…2.5 mm² / 0.14…1.5 mm²
- AWG (solid/stranded/ferrule): 28…14 / 28…14 / 26…16
- Stripping length: 8…9 mm
- Current load power contacts: max. 10 A
Installation & Wiring
- Snap onto 35 mm DIN rail (EN 60715) with locking mechanism
- Side-by-side mounting using double slot and key connection
- Spring-actuated terminals – use a screwdriver for wiring
- Solid wire: 0.08…2.5 mm² (AWG 28…14)
- Stranded wire: 0.08…2.5 mm² (AWG 28…14)
- With ferrule: 0.14…1.5 mm² (AWG 26…16)
- Strip length: 8…9 mm
- No address or configuration settings required – plug and play
Compatibility & System Integration
- Works with all Beckhoff EtherCAT couplers and controllers
- Compatible with TwinCAT automation software
- Direct connection of 2-wire sensors via additional +24 V points
- Functional isolation 2500 V between E-bus and field voltage
- Supports EN 61131-2 type 1/3 input specification
Certifications & Approvals
- CE mark – conforms to EU standards
- UL listed – recognized for US and Canada
- EMC immunity: EN 61000-6-2
- EMC emission: EN 61000-6-4
- Vibration/shock tested per EN 60068-2-6 / EN 60068-2-27
Package Contents
- 1 x Beckhoff EL1004-0020 terminal
- Documentation leaflet (digital download available)
- No additional accessories required
Warranty & Shipping
- 12-month warranty against manufacturing defects
- Shipped within 12–24 hours after order confirmation
- Carriers: FedEx, UPS, DHL – tracking provided
Expert Review
- “The EL1004-0020 offers rock-solid 3 ms filtering – ideal for noisy industrial environments. Its 2500 V isolation ensures safety and signal integrity. I recommend it for PLC input expansion where reliability matters.” – Senior Automation Engineer
Manager’s Insight
- “This terminal reduces commissioning time thanks to tool-free wiring and no configuration. The direct sensor connection saves external terminal blocks. A cost-effective choice for distributed I/O.” – Product Line Manager
Typical Applications
- Industrial control panels and machine builders
- Sensor signal acquisition (proximity, limit switches, pushbuttons)
- EtherCAT distributed I/O systems
- Automation retrofits and new installations
- Process monitoring and factory automation
Frequently Asked Questions (FAQ)
- What type of sensors work with this terminal?
2-wire sensors with 24 V DC supply. Also supports 3-wire sensors using external power. - Do I need to set any addresses or DIP switches?
No. The terminal is auto-configured by the EtherCAT master. Zero address settings. - Is the input filter adjustable?
No. The filter is fixed at 3 ms – optimal for mechanical contacts. - Can I use this in a high-vibration environment?
Yes. It meets EN 60068-2-6 (vibration) and EN 60068-2-27 (shock). - What is the maximum cable length?
Depends on cable quality; keep under 30 m for reliable 24 V signals. - Does it support distributed clocks (DC)?
No. This model does not feature DC; use EL1004-0100 for DC.
Experience-Based Q&A
- We had false triggers on other modules – will this help?
Yes. The 3 ms filter eliminates bouncing from mechanical switches. Many users report cleaner signals. - How does it behave during power loss?
It recovers instantly without losing configuration (no settings to lose). - Can I mix it with other EL terminals?
Absolutely. All EL series terminals are designed for side-by-side mounting and share the same E-bus.
Selection Guide
- Choose EL1004-0020 if you need 4 standard 24 V inputs with 3 ms filter and 2500 V isolation.
- For faster response (<1 ms) choose EL1004-0010 (no filter).
- For distributed clocks (DC) select EL1004-0100.
- For more channels, consider EL1014 (8-channel) or EL1018.
Contact Information:
Email: sales@powergearx.com
WhatsApp: +86 18030005825
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