In sourcing discussions, EL3702 is often placed next to Beckhoff El9410, El9550 Beckhoff and Beckhoff El2809 so procurement teams can align budgets and technical requirements effectively.
EL3702 - Beckhoff EtherCAT Terminal Analog Input
Beckhoff presents the EL3702 EtherCAT Terminal Analog Input, a high-speed EtherCAT Terminal designed for precise signal acquisition and reliable automation performance.
| Brand | Beckhoff |
| Product Type | EtherCAT Terminal Analog Input |
| Product | EL3702 |
EL3702 Beckhoff EtherCAT Terminal Analog Input Technical Specifications
| Specification | Value |
|---|---|
| Number of inputs | 2 (differential) |
| Max. sampling rate | max. 10 µs/100 ksps (per channel, simultaneously) |
| Measurement error/uncertainty | > 200 kΩ |
| Input filter limit frequency | 80 kHz |
| Measurement error/uncertainty 2 | < ±0.3% up to 10 Hz (relative to full scale value) |
| 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*: 0.08..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 |
| Distributed clocks | yes |
| Distributed clock precision | << 1 µs |
| Common-mode voltage UCM | max. 35 V |
| Conversion time | ~ 10 µs per sample |
| Electrical isolation | 500 V (E-bus/signal voltage) |
| Current consumption E-bus | typ. 200 mA |
| Bit width in the process image | input: n x 2 x 16 bit data; optionally 2 x 16 bit cycle counter, 4 byte StartNextLatch time |
| Special features | oversampling |
| 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 |
| Oversampling factor | n = 1â¦100 selectable (max. 100 ksamples/s) |
| Ex marking | ATEX:II 3 G Ex ec IIC T4 GcIECEx:Ex ec IIC T4 GccFMus:Class I, Division 2, Groups A, B, C, DClass I, Zone 2, AEx ec IIC T4 Gc |
| Pluggable wiring | for all ESxxxx terminals |
The Beckhoff EL3702 EtherCAT Terminal Analog Input is built for precision with 2 differential inputs and a maximum sampling rate of 100 ksps per channel. Featuring oversampling with selectable factors from 1 to 100, it enables high-resolution data capture with distributed clock precision under 1 µs. With a conversion time of ~10 µs per sample and measurement error below ±0.3% at low frequencies, this terminal ensures reliable data integrity for demanding applications. Electrical isolation of 500 V between E-bus and signal voltage provides safety, while the compact 12 × 100 × 68 mm polycarbonate housing with spring-actuated wiring simplifies installation on standard DIN rails. Operating within -25°C to +60°C and up to 95% humidity, the EL3702 meets global standards with CE, UL, ATEX, IECEx, and cFMus certifications, ensuring resilience in challenging industrial conditions.
Applications of the Beckhoff EL3702 EtherCAT Terminal extend to real-time monitoring, process automation, and control tasks where precision and speed are critical. It is widely deployed in power generation plants, chemical industries, and machine-building sectors where synchronized data acquisition supports safety and quality assurance. In robotics and motion control, the oversampling capability helps engineers achieve accurate synchronization of fast processes, while in laboratories and training institutes, it provides engineering students and maintenance teams with reliable performance for hands-on experimentation. With robust EMC compliance, vibration and shock resistance, and a current consumption of 200 mA via the E-bus, this terminal ensures long service life and stable operation in automation networks.
Backed by Beckhoff’s expertise in industrial automation, the EL3702 EtherCAT Terminal Analog Input combines cutting-edge oversampling technology with dependable durability, making it a trusted choice for engineers and system integrators. Its compact design, high-speed performance, and global approvals reinforce its role as a dependable solution in modern EtherCAT-based architectures. This makes the EL3702 a long-term investment for industries seeking precision, reliability, and compliance in automation systems.
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