Beckhoff Terminal, 8-channel Analog Input - EL3318

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Beckhoff Terminal, 8-channel Analog Input - EL3318

The EL3318 is an EtherCAT terminal designed for analog input with 8 channels for temperature measurement using thermocouples, offering 16-bit resolution. It supports the direct connection of eight thermocouples and is suitable for space-saving use in control cabinets. The terminal operates thermocouple sensors using a 2-wire technique. A microprocessor handles linearization across the entire selectable temperature range. 

Specifications 
Part Number EL3318
Category PLCs/Machine Control
Subcategory PLC Programming Terminal
Number of inputs 8
Power supply via the E-bus
Distributed clocks
Input filter limit frequency typ. 1 kHz
Connection method 2-wire
Conversion time approx. 2.5 s up to 20 ms, depending on configuration and filter setting, default: approx. 250 ms
Voltage measurement ±30/±60/±75 mV
Resolution 16 bit, representation adjustable: 0.1/0.01°C or 1/2/4 µV per digit
Temperature measurement (thermocouple) type B, C, E, J, K, L, N, R, S, T, U (default setting: type K)
Measurement uncertainty (voltage measurement) at ±75 mV, 23°C ambient temperature: < ±0.096% (relative to full scale value)
Electrical isolation 500 V (E-bus/signal voltage)
Current consumption power contacts
Current consumption E-bus typ. 210 mA
Special features channel by channel wire break detection, internal and external cold junction, firmware filter adjustable
Operating/storage temperature -25…+60°C/-40…+85°C
Weight approx. 70 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
Protection rating/installation pos. IP20/variable

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
  • High Performance: Beckhoff control systems offer powerful computing capabilities for demanding industrial automation tasks.

  • Energy-Efficient: Designed with optimized power usage to support sustainable, low-energy operations.

  • Durable & Reliable: Built to withstand harsh industrial environments with high-quality components and rugged designs.

  • Quiet Operation: Fanless or low-noise cooling systems in many models ensure minimal disruption in sensitive areas.

  • 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
  • Keep Units Clean: Regularly remove dust and debris from ventilation openings and surfaces.

  • Check Connections: Inspect cables and connectors periodically for wear or damage.

  • Monitor Software Updates: Keep firmware and software updated to ensure optimal performance and security.

  • Temperature Control: Ensure devices are operated within recommended temperature ranges to avoid overheating.

  • Annual System Check: Have a technician perform a full inspection and preventive maintenance annually.

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