EJ3108

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The EJ3108 from Beckhoff is part of the EJ EtherCAT Plugin Series, featuring a versatile 8-channel analog input for voltage, ranging from -10 to +10 volts with a 16-bit resolution. This module operates within a temperature range of -25°C to +60°C and utilizes an E-bus power supply while consuming 300 mA typically.

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Product Description:

The Beckhoff EJ3108 is a 12-16 pin plug-in module suited for automation applications that require precise analog signal processing. It operates on power supplied through the E-bus and does not require an additional source of power. This enhances the ease of integration and ensures seamless connectivity for performance reliability. The unit can process both positive and negative voltages, accommodating a voltage range of -10 to +10 V. This ensures adaptability to a wide range of application demands to suit specific requirements. The module features an internal resistance of 20 MΩ for differential inputs and 10 MΩ for single-ended inputs. This high resistance minimizes signal loading, ensuring the accuracy and overall reliability of the system.

The EJ3108 plug-in module is equipped with an input filter limit frequency of approximately 200 Hz. This feature helps to reduce high-frequency noise and interference in the input signals, ensuring that only the relevant data is processed. This helps to enhance the clarity and accuracy of the analog signals for reliable data transmission. It boasts a rapid processing capacity of 1 ms per cycle, ensuring that the module can quickly convert analog voltage signals into digital data. The module features a 16-bit resolution to ensure high accuracy in signal measurement.

The EJ3108 offers enhanced functionality and usability. It allows users to choose between different formats for viewing measurement data, for ease of use. It also provides limit value monitoring for real-time diagnostics and troubleshooting. The module is suited for both harsh and moderate climates, with a wide operating temperature range of -25 to +60°C. It does not feature moisture protection so condensation should be avoided to maintain reliable performance and reliability.

Conversion time
1 ms
Differential input resistance
20 MΩ (typ.)
E‑bus current consumption
300 mA (typ.)
EMC standards
EN 61000-6-2 / EN 61000-6-4
Input filter limit freq
200 Hz (typ.)
Measurement error
±0.3% FS
Number of inputs
6 differential + 2 single-ended
Operating temperature
-25…+60°C
Power supply
via E-bus
Product type
EtherCAT 8‑channel analog input module
Protection rating
IP20
Resolution
16 bit
Signal range
±10 V
Single-ended input resistance
10 MΩ (typ.)
Storage temperature
-40…+85°C
Vibration/shock standards
EN 60068-2-6 / EN 60068-2-27

Frequently Asked Questions about EJ3108:

Q: How many inputs does the EJ3108 module support?

A: The EJ3108 supports 6 differential inputs and 2 single-ended inputs, allowing for diverse signal processing to suit different application requirements.

Q: What is the resolution of the analog input for the EJ3108?

A: The EJ3108 features a resolution of 16 bits, providing high accuracy for voltage measurements.

Q: What is the signal voltage range for the EJ3108 module?

A: The EJ3108 processes signals in the range of -10 to +10 V, accommodating a variety of analog input needs.

Q: What is the electrical isolation rating of the EJ3108?

A: The EJ3108 provides 500 V of electrical isolation between the E-bus and field potential, enhancing safety in operation.

Q: What is the current consumption of the EJ3108?

A: The typical current consumption of the EJ3108 when powered via the E-bus is 300 mA.


Internal Product Review

  • ‘‘The EJ3108 EtherCAT plug-in module excels in accuracy and provides excellent functionality in a wide range of applications. However, users may find the maximum voltage limits restrictive for some applications.’’

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