Beckhoff EJ1889 Input Module | 16 Ch Digital 24V DC Ground Switch

EJ1889 | EtherCAT Plug-in Module, 16-Channel Digital Input, 24 V DC, 3 ms

Beckhoff EJ1889 is a 16-channel digital input module. It reads 24 V DC signals from the field. The module transfers data to the controller with electrical isolation. It is designed for ground switching applications.

• Key Features
  • 16 digital inputs
  • Ground switching (PNP)
  • 3 ms input filter – removes switch bounce
  • LED status indicators per channel
  • Compact 12 mm housing
• Technical Specifications
  • Brand: Beckhoff
  • Model: EJ1889
  • Inputs: 16 channels
  • Nominal voltage: 24 V DC (-15 % / +20 %)
  • Signal “0”: 18…30 V DC
  • Signal “1”: 0…7 V DC
  • Input current: typ. 3 mA
  • Input filter: typ. 3.0 ms
  • Current consumption (E-bus): typ. 80 mA
  • Isolation: 500 V (E-bus / field)
  • Temperature range: -25…+60 °C (operating) / -40…+85 °C (storage)
  • Humidity: 95 % non-condensing
  • Protection rating: IP20
• Installation & Wiring
  • Mounts on a signal distribution board
  • Mechanical coding prevents wrong insertion
  • Locking latch secures the module
  • 2 x 20-pin socket strip connection
  • Field wiring via distribution board
• Certifications
  • CE, UL approved
  • EMC: EN 61000-6-2 / EN 61000-6-4
  • Vibration/shock: EN 60068-2-6 / EN 60068-2-27
• Package & Warranty
  • Includes: EJ1889 module, documentation
  • 12-month warranty
  • 12-24 hour dispatch
  • Shipping: FedEx, UPS, or DHL

Expert Review

Manager’s Insight: The EJ1889 offers reliable digital input with ground switching. Its 3 ms filter eliminates false triggers from mechanical switches. The module is compact and easy to install. With CE and UL approval, it fits global applications. A solid choice for industrial I/O.

Applications

• PLC and DCS input modules
• Sensor and switch monitoring
• Conveyor and material handling
• Packaging machinery
• Factory automation systems

Comparison with Similar Models

• Beckhoff EL1809 – 16-channel digital input, similar but with different filter
• Beckhoff EL1819 – 16-channel input with higher isolation
• Beckhoff EJ1809 – 16-channel input, standard switching

FAQ

• What is ground switching? The input switches to ground (0 V) when active. This is also called PNP or sourcing.
• What is the input filter for? It removes noise and bouncing from mechanical switches. The filter time is 3 ms.
• Can I use this with 5 V sensors? No, the module is designed for 24 V DC signals only.
• How do I mount the EJ1889? It plugs onto a signal distribution board. The board provides the wiring connections.
• Is the module hot-swappable? Yes, you can replace it while the system is running (under certain conditions).

Selection Guide

• Choose EJ1889 for ground switching applications (PNP).
• For standard switching (NPN), consider other models.
• Use the 3 ms filter to avoid false triggers from switches.
• Check your signal distribution board compatibility.
• Ensure 24 V DC power supply matches the nominal voltage.

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