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Beckhoff Terminal, 4-Channel Analog Input - EL3174
The EL3174 EtherCAT Terminal is designed for precise analog input processing, offering four configurable channels for signals ranging from -10/0 to +10 V or -20/0/+4 to +20 mA per channel. Each input type (voltage or current) requires separate physical connections and controller configuration via CoE (CANopen over EtherCAT). Voltage inputs operate differentially, while current inputs are single-ended, all digitized with a high-resolution 16-bit accuracy.
Specifications
| Part Number | EL3174 |
|---|---|
| Category | PLCs/Machine Control |
| Subcategory | VDC Logic I/O Module |
| Number of inputs | 4 |
| Ground reference (input) | Voltage: differential<br>Current: single-ended |
| Power supply | via the E-bus |
| Oversampling factor | – |
| Distributed clocks | yes |
| Distributed clock precision | << 1 µs |
| Internal resistance | > 200 kΩ |
| Input filter limit frequency | 5 kHz |
| Common-mode voltage UCM | max. 35 V (voltage measurement) |
| Dielectric strength | max. 30 V (current measurement) |
| Conversion time | minimum 150 µs |
| Measuring range, nominal | -10/0…+10 V |
| Measuring range, technical | -10.73…+10.73 V |
| Resolution | 16 bit (incl. sign) |
| Measurement error/uncertainty | < ±0.3% (relative to full scale value) |
| Electrical isolation | 500 V (E-bus/signal voltage) |
| Current consumption power contacts | load-dependent |
| Current consumption E-bus | typ. 180 mA |
| Bit width in the process image | inputs: 16 byte |
| Configuration | no address or configuration setting |
| Special features | U/I parameterizable, ExtendedRange, standard and compact process image, activatable FIR/IIR filters |
| Operating/storage temperature | -25…+60°C / -40…+85°C |
| Weight | approx. 65 g |
| 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 |
Information About EL3174
The EL3174 EtherCAT Terminal is designed for versatile analog input applications, featuring four channels that are individually configurable. Each channel accommodates signals ranging from -10/0 to +10 V or -20/0/+4 to +20 mA. To ensure proper functionality, voltage and current signals must be connected to distinct terminal points. Channel configuration for voltage (U) or current (I) modes is facilitated via CoE under controller/TwinCAT control.
Voltage inputs operate differentially, while current inputs are single-ended. All inputs are digitized at a resolution of 16 bits and transmitted to the higher-level automation device with electrical isolation, ensuring signal integrity and reliability. The terminal supports a technical measuring range extending up to ±107% of the nominal range, facilitating sensor calibration within limit ranges. Diagnostics adhere to NAMUR NE43 standards, enabling robust operational monitoring and fault detection.
Manufacturer information
Beckhoff Automation is a German manufacturer of open automation systems, including industrial PCs, I/O and fieldbus components, drive technology, automation software, and hardware for machine vision. Beckhoff is known for its innovative and reliable automation technology, which is used in a wide range of industries. The company is committed to providing customers with the best possible automation solutions to help them succeed in their businesses.
What Our Experts Think
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High Performance: Beckhoff control systems offer powerful computing capabilities for demanding industrial automation tasks.
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Energy-Efficient: Designed with optimized power usage to support sustainable, low-energy operations.
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Durable & Reliable: Built to withstand harsh industrial environments with high-quality components and rugged designs.
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Quiet Operation: Fanless or low-noise cooling systems in many models ensure minimal disruption in sensitive areas.
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Easy Installation: Modular design allows for quick and flexible setup in a wide range of industrial applications.
Q&A
Q: What is Beckhoff equipment used for?
A: Beckhoff products are used for industrial automation, providing control, motion, and communication solutions for a variety of industries.
Q: What features are included in Beckhoff automation systems?
A: Features include high-performance CPUs, modular I/O systems, compact form factors, and support for leading industrial communication standards like EtherCAT.
Q: Are Beckhoff products energy-efficient?
A: Yes, many Beckhoff systems are designed to reduce energy consumption while maintaining high-speed, precise control.
Q: How does Beckhoff compare to other automation brands?
A: Beckhoff stands out for its open automation systems, flexible designs, and strong performance in both small and large-scale industrial projects.
Maintenance Tips
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Keep Units Clean: Regularly remove dust and debris from ventilation openings and surfaces.
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Check Connections: Inspect cables and connectors periodically for wear or damage.
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Monitor Software Updates: Keep firmware and software updated to ensure optimal performance and security.
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Temperature Control: Ensure devices are operated within recommended temperature ranges to avoid overheating.
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Annual System Check: Have a technician perform a full inspection and preventive maintenance annually.
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