EL3024 Beckhoff
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MPN: EL3024-0000
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The EL3024 is a four-channel analog input terminal manufactured by Beckhoff as part of the EL EtherCAT Terminals series. It provides 12-bit resolution and supports differential ground reference with a common-mode voltage up to 10 V. The terminal uses E-bus electronics supply and has an input filter cutoff of 1 kHz, with IP20 protection rating.
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Product Description:
The EL3024 analog input terminal is produced by Beckhoff as part of the EL EtherCAT Terminals series. Intended for distributed I/O racks, the unit conditions low-level voltage signals and forwards digitized data to an EtherCAT controller over the backplane. By concentrating four differential measurement channels in a 12 mm housing, it allows process variables such as sensor feedback and test-bench voltages to be collected without standalone acquisition hardware. Its narrow housing also conserves rail space in control cabinets containing multiple EtherCAT terminals.
Each module provides 4 analog input channels that share a multiplexed sampling front end. Conversion accuracy is supported by a resolution of 12 bits, so every reading resolves one part in 4,096. The inputs use a differential configuration to minimize ground offsets, and they tolerate a common-mode potential of up to 10 V between signal pairs. A hardware filter with a cutoff frequency of 1 kHz suppresses higher-frequency noise before digitization. The internal analog-to-digital converter is sequenced through the channels by the multiplexing logic. Operating power for the electronics arrives through the EtherCAT backplane via the E-bus, eliminating the need for separate external field-voltage wiring.
For controller access, the terminal maps each channel into the process image using 2 B of status data and 2 B of value data per channel. Open-circuit indication is generated when a sensor becomes disconnected, allowing the controller to detect an interrupted signal path. Nonvolatile storage keeps configuration data available after a power cycle. The module withstands ambient moisture up to 95% relative humidity and carries an enclosure rating of IP20, making it suitable for protected control-cabinet environments. Any mounting orientation is acceptable because the installation position is variable. The differential input design helps maintain measurement accuracy when ground references shift within the permitted common-mode range. Samples are captured in multiplexed mode, with the converter reading the four channels in sequence before transferring their values through the EtherCAT process image.
