EL3311

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The EL3311 terminal features a single input, a power supply via the E-bus, a typical input filter limit frequency of 1 kHz, and supports voltage measurements of ±30/±60/±75 mV. Part of the EL EtherCAT Terminals series manufactured by Beckhoff, it provides 16-bit adjustable resolution for precise measurements.

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Product Description:

The EL3311 is a 1 Channel EtherCAT Terminal designed for precise temperature measurement. It supports thermocouple sensors with 16 bit resolution. The terminal offers high accuracy for industrial monitoring and control. It is compact, efficient and suitable for DIN rail installation.

The EL3311 EtherCAT terminal allows direct connection of thermocouples using a 2 wire technique. It performs linearization across the full temperature range using an internal microprocessor. The terminal offers cold junction compensation internally and externally. It provides channel wise wire break detection and indicates faults with LEDs. It supports mV measurement as an additional function. Input filtering is adjustable with a typical limit frequency of 1 kHz. The device receives its power supply through the E-bus. The housing of the model is made of durable polycarbonate with dimensions of 12 mm width, 100 mm height and 68 mm depth. The EL series EtherCAT terminal follows EN 60715 standard and can be mounted on a 35 mm DIN rail with locking. The housing features signal LEDs for visual status indication. Connection for the model is achieved via a double slot and key system. Distributed clocks are not supported on this model. The internal design form of the terminal is optimized for space efficiency in control cabinets. Signal processing includes firmware based adjustable filters that enhances flexibility for various applications.

The EL3311 EtherCAT terminal from Beckhoff weighs approximately 60 grams and supports easy handling during installation. It features an 8 pin housing design that is suitable for standard terminal setups. The device is designed for use with thermocouples and provides stable measurement performance in industrial environments. The selectable temperature range ensures adaptation to specific application needs. Its fault indication system improves reliability and simplifies troubleshooting.

Connection Method
2-wire
Conversion Time
approx. 750 ms to 20 ms, default ~75 ms
Current Consumption E-bus
200 milliampere
Input Filter Limit Frequency
typ. 1 kHz
Installation Position
Variable
Number Of Inputs
1
Power Supply
Via the E-bus
Protection Rating
IP20
Resolution
16 bit, adjustable (0.1/0.01°C, 1/2/4 µV)
Temperature Measurement (type K Default)
Type B, C, E, J, K, L, N, R, S, T, U
Voltage Measurement
±30/±60/±75 mV
Weight
60 g

Frequently Asked Questions about EL3311:

Q: How does the EL3311 ensure precise temperature measurement with thermocouples?

A: The EL3311 uses 16-bit resolution and full-range linearization via an internal microprocessor for accurate temperature readings.

Q: Does the Beckhoff EL3311 support stable installation on DIN rails?

A: It complies with EN 60715 standards and securely mounts to 35 mm DIN rails using a double slot and key system.

Q: How does the EL3311 Beckhoff terminal handle input signal stability?

A: The EL3311 offers adjustable firmware-based input filters with a typical 1 kHz limit to stabilize and adapt signal processing.

Q: What makes the EL3311 EtherCAT terminal easy to install and handle?

A: It features a lightweight (60 g) polycarbonate housing measuring 12 mm x 68 mm for quick and compact installation.

Q: How does the EL3311 manage faults during thermocouple measurement?

A: It integrates cold junction compensation and channel-specific wire break detection with clear fault indication via status LEDs.


Internal Product Review

  • ‘‘The EL3311 EtherCAT Terminal from Beckhoff provides precision temperature measurement using thermocouples with 16-bit resolution. Its internal and external cold junction compensation ensures accurate readings. The device features firmware-adjustable input filters, mV measurement support, and channel-wise wire break detection, making it highly reliable for industrial use.’’

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