EL1809 Beckhoff
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MPN: EL1809-0000
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The Beckhoff EL1809 is part of the EL EtherCAT Terminals series and provides 16 digital inputs with a nominal input voltage of 24 VDC. It uses a direct plug-in or push-in connection method and meets EN 61131-2 Type 1/3 input standards. The terminal features a 3 ms input filter, requires a 100 mA E-bus current, and has IP20 protection.
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Product Description:
The EL1809 digital input terminal is produced by Beckhoff and belongs to the EL EtherCAT Terminals series. It serves as a 24 V sensor interface that collects discrete field signals and forwards them to an EtherCAT controller, allowing compact I/O expansion on DIN-mounted automation equipment. The device inserts into a common power segment so the terminal block can be extended without extra cabling effort, preserving the fast cycle characteristics expected from EtherCAT networks in machine control, packaging, and material-handling lines. This layout also helps keep control cabinets compact when many sensor points must be wired in a small space.
The wiring side accepts conductors through a Direct Plug-In / Push-In connection method, eliminating screw clamps and reducing installation time. Each channel is referenced to the nominal system potential of 24 VDC, and the terminal provides 16 opto-isolated inputs that share a 0 V power contact as their return. Channel debouncing is handled internally with a fixed 3 ms input filter, so external RC networks are unnecessary in normal use. Input circuits conform to EN 61131-2 Type 1/3, meaning the on-state current follows the standard and short-circuit protection is included. The electronics draw only 3 mA from the upstream 24 V supply, and all functional power reaches the board through the power contacts instead of a separate connector. For single-conductor sensors, the terminal also supports 1-Wire technology over short cable runs.
The EtherCAT backplane requires only 100 mA of E-bus current for communication, leaving headroom for additional modules on the same segment. The housing has an IP20 rating, so the terminal is intended for clean cabinet installation while still providing finger-safe protection. In the cyclic process image, the unit contributes 16 Input Bits, giving the PLC a direct bit pattern for every channel during data exchange. Mechanical attachment uses a 35 mm mounting rail, and the power contacts are looped through so downstream terminals can continue to receive supply current without extra jumpers.
Frequently Asked Questions about EL1809:
Q: How many digital inputs are available on the EL1809 module?
A: The EL1809 terminal provides 16 separate digital inputs for device integration.
Q: What is the nominal input voltage required by the EL1809 terminal?
A: The nominal input voltage for the EL1809 is specified as 24 VDC.
Q: What connection method is used on the Beckhoff EL1809 terminal?
A: The EL1809 uses a direct plug-in or push-in connection method, allowing easy wire installation.
Q: What protection class does the EL1809 terminal offer?
A: The EL1809 terminal operates with protection class IP20, so it is intended for installation in dry, protected environments.
Q: What type of rail is used to mount the EL1809 terminal?
A: The EL1809 digital input module is mounted on a 35 mm DIN rail for secure installation in control cabinets.
