Maintenance teams planning replacements for EL3204 frequently review Beckhoff El9410, El9550 Beckhoff and Beckhoff El2809 to prevent downtime, checking availability and compatibility with existing systems.
EL3204 - Beckhoff EtherCAT Terminal Analog Input
Technical Specifications of Beckhoff EtherCAT Terminal Analog Input EL3204:

| Brand | Beckhoff |
| Product Type | EtherCAT Terminal Analog Input |
| Product | EL3204 |
EL3204 Beckhoff EtherCAT Terminal Analog Input Technical Specifications
| Specification | Value |
|---|---|
| Number of inputs | 4 |
| Input filter limit frequency | typ. 1 kHz |
| Measurement error/uncertainty 2 | < ±0.5°C for Pt sensors |
| Housing - Design form | compact terminal housing with signal LEDs |
| Housing - Material | polycarbonate |
| Housing - Dimensions (W x H x D) | 12Â mm x 100Â mm x 68 mm |
| Housing - Installation | on 35 mm DIN rail, conforming to EN 60715 with lock |
| Housing - Side by side mounting by means of | double slot and key connection |
| Housing - Marking | labeling of the BZxxxx series |
| Housing - Wiring | solid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver |
| Housing - Connection cross-section | s*: 0.0..2.5 mm²,st*: 0.08..2.5 mm²,f*: 0.14...1.5 mm² |
| Housing - Connection cross-section AWG | s*: AWG28...14,st*: AWG28...14,f*: AWG26...16 |
| Housing - Stripping length | 8…9 mm |
| Housing - Current load power contacts | Imax: 10 A |
| Power supply | via the E-bus |
| Conversion time | approx. 85 ms default setting, 2â¦800 ms configurable |
| Electrical isolation | 500 V (E-bus/signal voltage) |
| Current consumption E-bus | typ. 190 mA |
| Bit width in the process image | 4 x 32 bit RTD input |
| Special features | integrated digital filter, limit value monitoring |
| Weight | approx. 60 g |
| Operating temperature | -25…+60°C |
| Storage temperature | -40…+85°C |
| Relative humidity | 95%, no condensation |
| Vibration/shock resistance | conforms to EN 60068-2-6/EN 60068-2-27 |
| EMC immunity/emission | conforms to EN 61000-6-2/EN 61000-6-4 |
| Protect. rating/installation pos. | IP20/variable |
| Approvals/markings | CE, CCC, UL, ATEX, IECEx, cFMus |
| Ex marking | ATEX:Â Â II 3G Ex ec IIC T4 GcIECEx:Â Â Ex ec IIC T4 GccFMus:Â Â Class I, Division 2, Groups A, B, C, DÂ Â Class I, Zone 2, AEx ec IIC T4 Gc |
| Pluggable wiring | for all ESxxxx terminals |
| Sensor types | Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni1000, resistance measurement (e.g. potentiometer, 10 Ωâ¦1/4 kΩ), KTY sensors (types see documentation) |
| Connection method | 2-wire |
| Measuring current | < 0.5 mA (load-dependent) |
| Temperature range | -200â¦+850°C (Pt sensors); -60â¦+250°C (Ni sensors) |
The Beckhoff EL3204 EtherCAT Terminal Analog Input offers four input channels designed for RTD sensors including Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni1000, and KTY types. With a measurement range of -200°C to +850°C for Pt sensors and -60°C to +250°C for Ni sensors, it ensures versatile temperature monitoring. The module provides ±0.5°C measurement accuracy, supported by an integrated digital filter and limit value monitoring, allowing consistent precision in process control environments. Its fast conversion time of 85 ms (configurable up to 800 ms) makes it suitable for real-time monitoring in demanding applications.
The EL3204 features a compact 12 mm housing with LED diagnostics, easy DIN rail installation, and reliable 500 V electrical isolation between E-bus and signal voltage, ensuring safe and stable operation. With a typical E-bus consumption of 190 mA and current load capacity of 10 A on power contacts, it provides efficiency alongside robust performance. Certified with CE, CCC, UL, ATEX, IECEx, and cFMus approvals, it guarantees compliance with international standards and reliable operation under industrial conditions ranging from -25°C to +60°C with up to 95% humidity.
Applications of the Beckhoff EL3204 EtherCAT Terminal Analog Input include temperature monitoring in process industries, resistance measurement in laboratory automation, and quality control in manufacturing systems. Maintenance engineers value its plug-and-play design with no complex addressing, while system integrators appreciate the flexibility of variable connection technology for 2-wire integration. By combining compact design, accurate sensing, and Beckhoff’s proven EtherCAT platform, the EL3204 is a trusted solution for ensuring precision, safety, and efficiency in modern industrial automation networks.







