EL2032 by Beckhoff

The EL2032 is a digital output module produced by Beckhoff and supplied within the EL EtherCAT Terminals series. Designed for DIN rail mounting on distributed I/O stations, the terminal switches 24 V field devices directly from an EtherCAT network. This design allows compact actuation of solenoids, lamps, or small relays in industrial automation cells. The electronic supply is derived automatically from the E-Bus, eliminating the need for a separate logic feed.

Each of the two output channels is rated for a maximum load of 2 A at a field potential of 24 VDC. Fast response is supported by a turn-on delay of 40 µs and a turn-off delay of 200 µs, so higher-speed sequences can be executed without perceptible lag. The terminal contains two independent high-side switches; therefore, the module provides 2 discrete outputs that can be driven simultaneously. Reverse-voltage protection prevents damage if the supply polarity is accidentally inverted, and short-circuit detection disconnects the affected channel when excessive current is sensed. Open-circuit detection signals broken wiring before it causes a process fault.

The process image maps the outputs and diagnostic bits directly into the controller as 2 output bits and 2 input bits, simplifying PLC programming. Backbone consumption is limited to 100 mA from the EtherCAT E-Bus, leaving ample power capacity for additional terminals in the strand. The module accepts ohmic, inductive, and lamp loads without external suppression networks, and its switching semiconductors minimize residual voltage across these load types. An enclosure rated IP20 protects the electronics from finger contact and foreign objects inside control cabinets, while the variable installation position allows the housing to be oriented as space permits. Reverse-wired supply conductors are blocked internally, and the elastomer seal around the contacts supports long-term reliability in environments subject to vibration.