ELX3204

BECKHOFF

BECKHOFF ELX3204 Intrinsically Safe EtherCAT Terminal

SKU ELX3204

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: BECKHOFF
  • Product No.: ELX3204
  • Origin Germany
  • Product Type: EtherCAT Terminals
  • Payment: T/T, Western Union
  • Weight: 0.06 kg
  • Dimensions: 12 mm x 100 mm x 68 mm
  • Shipping port: Xiamen
  • Warranty: 12 months

Tags

Analog Input Modules EtherCAT Terminals
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Product Description

Description

The BECKHOFF ELX3204 is a high-precision, 4-channel analog input terminal designed for direct temperature measurement using resistance temperature detectors (RTDs) in hazardous locations. This intrinsically safe (Ex i) EtherCAT Terminal enables sensors located in explosive atmospheres—such as Zone 0/20 or Zone 1/21—to be wired directly to the I/O system, eliminating the need for external barriers or isolation amplifiers.

Equipped with 16-bit resolution, the BECKHOFF ELX3204 delivers highly accurate temperature signals back to the controller. It supports a broad range of standard resistance-based sensors, including platinum and nickel RTDs, as well as direct resistance measurements. Power for the E-bus and the internal electronics is managed safely through the EtherCAT Terminal system in conjunction with an ELX9560 power supply terminal, ensuring electrical safety and signal isolation.

Features

  • Four differential analog input channels for RTD sensors and resistance measurements.
  • Intrinsically safe (Ex i) design for direct connection to sensors in hazardous zones.
  • High-resolution 16-bit analog-to-digital conversion for precise process value monitoring.
  • Configurable 2-wire connection technology per channel.
  • Integrated limit value monitoring, digital filters, and sensor-specific characteristic curve linearization.
  • Diagnostic capabilities supported by integrated signal LEDs indicating channel status and errors.

Applications

  • Intrinsically safe temperature monitoring in chemical and petrochemical processing plants.
  • Direct RTD sensor interfacing inside explosive gas and dust environments (Zone 0/20, Zone 1/21).
  • Oil and gas refinery process automation where explosion protection is required.
  • Pharmaceutical processing systems handling volatile solvents.

Technical Specifications

General

Parameter Specification
Manufacturer BECKHOFF
Model ELX3204
Product Type EtherCAT Terminal, Analog Input, Ex i
Number of Inputs 4 differential inputs
Design Form Compact terminal housing with signal LEDs
Material Polycarbonate

Electrical and Power

Parameter Specification
Power Supply Via the E-bus
Supply Voltage Electronics 24 V DC (via power contacts), ELX9560 power supply required
Current Consumption E-bus typ. 70 mA
Current Consumption Power Contacts typ. 10 mA
Power Contacts 2 blade/spring contacts

Signal and Measurement

Parameter Specification
Sensor Types Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni1000, KT(Y) sensors, resistance (10 Ohm to 4 kOhm)
Connection Method 2-wire
Temperature Range (Pt sensors) -200 to +850 degC
Temperature Range (Ni sensors) -60 to +250 degC
Resolution 16 bit (up to 0.01 degC per digit; preset: 0.1 degC per digit)
Measuring Current < 1 mA (depending on sensor and measuring range)
Measuring Error < +-0.3% (relative to full scale value)
Internal Resistance typ. >= 10 kOhm (differential)
Input Filter Limit Frequency typ. 1 kHz
Conversion Time 10 to 3300 ms (adjustable, default: 270 ms)

Mechanical, Environmental, and Connection

Parameter Specification
Dimensions (W x H x D) 12 mm x 100 mm x 68 mm
Weight approx. 60 g
Installation On 35 mm DIN rail (EN 60715) with lock
Wiring Technology Spring actuation by screwdriver
Connection Cross-Section (Solid/Stranded) 0.08 to 2.5 mm² (AWG 28 to 14)
Connection Cross-Section (with Ferrule) 0.14 to 1.5 mm² (AWG 26 to 16)
Stripping Length 8 to 9 mm
Operating Temperature -25 to +60 degC
Storage Temperature -40 to +85 degC
Relative Humidity 95 %, non-condensing
Protection Rating IP20

Compliance and Certifications

Parameter Specification
Approvals and Markings CE, UL, ATEX, IECEx, cFMus, CCC
ATEX Protection Class II 3(1)G Ex ec [ia Ga] IIC T4 Gc, II (1)D [Ex ia Da] IIIC, I (M1) [Ex ia Ma] I
IECEx Protection Class Ex ec [ia Ga] IIC T4 Gc, [Ex ia Da] IIIC, [Ex ia Ma] I

Installation Guidelines

  1. Ensure the entire automation system and the mounting rack are de-energized before mounting the module.
  2. Verify that the terminal is correctly mounted on a standard 35 mm DIN rail (EN 60715) using the integrated double slot and key connection.
  3. Ensure standard Ex i safety spacing and isolation distances are strictly maintained between intrinsically safe and non-intrinsically safe cabling.
  4. Use a dedicated BECKHOFF ELX9560 power supply terminal to provide compliant E-bus power and safety segregation to the ELX segment.
  5. Connect the RTD sensors using the designated 2-wire configuration, maintaining appropriate shielding and grounding practices for hazardous locations.
  6. Confirm that the terminal block is securely locked on the DIN rail and that status LEDs operate correctly upon system initialization.
Shipping &amp; Returns

Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
FAQ
What is the primary function of the BECKHOFF ELX3204 terminal?
The BECKHOFF ELX3204 is a 4-channel analog input terminal designed to interface directly with resistance temperature detectors (RTDs) in explosive or hazardous areas without requiring separate external barriers.
Which sensor types are compatible with the BECKHOFF ELX3204?
The BECKHOFF ELX3204 supports a wide range of standard RTD sensors including Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni1000, and direct resistance measurements ranging from 10 Ohm to 4 kOhm.
Is an external power supply required for the BECKHOFF ELX3204?
Yes, the BECKHOFF ELX3204 requires power via the E-bus. For intrinsically safe applications, it must be powered using the BECKHOFF ELX9560 power supply terminal to ensure appropriate safety isolation and power regulation.
What explosive zone ratings does the BECKHOFF ELX3204 carry?
The BECKHOFF ELX3204 carries extensive intrinsically safe certifications including ATEX and IECEx ratings of II 3(1)G Ex ec [ia Ga] IIC T4 Gc, enabling direct wiring to sensors located in Zone 0/20 and Zone 1/21.
What is the measurement resolution of the BECKHOFF ELX3204?
The BECKHOFF ELX3204 features high-performance 16-bit analog-to-digital conversion, allowing temperature resolution up to 0.01 degC per digit depending on the configuration (default is preset to 0.1 degC per digit).
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BECKHOFF ELX3204 Intrinsically Safe EtherCAT Terminal

Only 10 item(s) left in stock

  • Manufacturer: BECKHOFF

  • Product No.: ELX3204

  • Country of origin:Germany

  • Product Type: EtherCAT Terminals

  • Payment: T/T, Western Union

  • Weight: 60g

  • Dimensions: 12 mm x 100 mm x 68 mm

  • Shipping port: Xiamen

  • Warranty: 12 months

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Product Description
FAQ
Shipping Returns
Additional details
Reviews

Description

The BECKHOFF ELX3204 is a high-precision, 4-channel analog input terminal designed for direct temperature measurement using resistance temperature detectors (RTDs) in hazardous locations. This intrinsically safe (Ex i) EtherCAT Terminal enables sensors located in explosive atmospheres—such as Zone 0/20 or Zone 1/21—to be wired directly to the I/O system, eliminating the need for external barriers or isolation amplifiers.

Equipped with 16-bit resolution, the BECKHOFF ELX3204 delivers highly accurate temperature signals back to the controller. It supports a broad range of standard resistance-based sensors, including platinum and nickel RTDs, as well as direct resistance measurements. Power for the E-bus and the internal electronics is managed safely through the EtherCAT Terminal system in conjunction with an ELX9560 power supply terminal, ensuring electrical safety and signal isolation.

Features

  • Four differential analog input channels for RTD sensors and resistance measurements.
  • Intrinsically safe (Ex i) design for direct connection to sensors in hazardous zones.
  • High-resolution 16-bit analog-to-digital conversion for precise process value monitoring.
  • Configurable 2-wire connection technology per channel.
  • Integrated limit value monitoring, digital filters, and sensor-specific characteristic curve linearization.
  • Diagnostic capabilities supported by integrated signal LEDs indicating channel status and errors.

Applications

  • Intrinsically safe temperature monitoring in chemical and petrochemical processing plants.
  • Direct RTD sensor interfacing inside explosive gas and dust environments (Zone 0/20, Zone 1/21).
  • Oil and gas refinery process automation where explosion protection is required.
  • Pharmaceutical processing systems handling volatile solvents.

Technical Specifications

General

Parameter Specification
Manufacturer BECKHOFF
Model ELX3204
Product Type EtherCAT Terminal, Analog Input, Ex i
Number of Inputs 4 differential inputs
Design Form Compact terminal housing with signal LEDs
Material Polycarbonate

Electrical and Power

Parameter Specification
Power Supply Via the E-bus
Supply Voltage Electronics 24 V DC (via power contacts), ELX9560 power supply required
Current Consumption E-bus typ. 70 mA
Current Consumption Power Contacts typ. 10 mA
Power Contacts 2 blade/spring contacts

Signal and Measurement

Parameter Specification
Sensor Types Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni1000, KT(Y) sensors, resistance (10 Ohm to 4 kOhm)
Connection Method 2-wire
Temperature Range (Pt sensors) -200 to +850 degC
Temperature Range (Ni sensors) -60 to +250 degC
Resolution 16 bit (up to 0.01 degC per digit; preset: 0.1 degC per digit)
Measuring Current < 1 mA (depending on sensor and measuring range)
Measuring Error < +-0.3% (relative to full scale value)
Internal Resistance typ. >= 10 kOhm (differential)
Input Filter Limit Frequency typ. 1 kHz
Conversion Time 10 to 3300 ms (adjustable, default: 270 ms)

Mechanical, Environmental, and Connection

Parameter Specification
Dimensions (W x H x D) 12 mm x 100 mm x 68 mm
Weight approx. 60 g
Installation On 35 mm DIN rail (EN 60715) with lock
Wiring Technology Spring actuation by screwdriver
Connection Cross-Section (Solid/Stranded) 0.08 to 2.5 mm² (AWG 28 to 14)
Connection Cross-Section (with Ferrule) 0.14 to 1.5 mm² (AWG 26 to 16)
Stripping Length 8 to 9 mm
Operating Temperature -25 to +60 degC
Storage Temperature -40 to +85 degC
Relative Humidity 95 %, non-condensing
Protection Rating IP20

Compliance and Certifications

Parameter Specification
Approvals and Markings CE, UL, ATEX, IECEx, cFMus, CCC
ATEX Protection Class II 3(1)G Ex ec [ia Ga] IIC T4 Gc, II (1)D [Ex ia Da] IIIC, I (M1) [Ex ia Ma] I
IECEx Protection Class Ex ec [ia Ga] IIC T4 Gc, [Ex ia Da] IIIC, [Ex ia Ma] I

Installation Guidelines

  1. Ensure the entire automation system and the mounting rack are de-energized before mounting the module.
  2. Verify that the terminal is correctly mounted on a standard 35 mm DIN rail (EN 60715) using the integrated double slot and key connection.
  3. Ensure standard Ex i safety spacing and isolation distances are strictly maintained between intrinsically safe and non-intrinsically safe cabling.
  4. Use a dedicated BECKHOFF ELX9560 power supply terminal to provide compliant E-bus power and safety segregation to the ELX segment.
  5. Connect the RTD sensors using the designated 2-wire configuration, maintaining appropriate shielding and grounding practices for hazardous locations.
  6. Confirm that the terminal block is securely locked on the DIN rail and that status LEDs operate correctly upon system initialization.
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Key Features:
#Analog Input Modules #EtherCAT Terminals

What is the primary function of the BECKHOFF ELX3204 terminal?
The BECKHOFF ELX3204 is a 4-channel analog input terminal designed to interface directly with resistance temperature detectors (RTDs) in explosive or hazardous areas without requiring separate external barriers.

Which sensor types are compatible with the BECKHOFF ELX3204?
The BECKHOFF ELX3204 supports a wide range of standard RTD sensors including Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni1000, and direct resistance measurements ranging from 10 Ohm to 4 kOhm.

Is an external power supply required for the BECKHOFF ELX3204?
Yes, the BECKHOFF ELX3204 requires power via the E-bus. For intrinsically safe applications, it must be powered using the BECKHOFF ELX9560 power supply terminal to ensure appropriate safety isolation and power regulation.

What explosive zone ratings does the BECKHOFF ELX3204 carry?
The BECKHOFF ELX3204 carries extensive intrinsically safe certifications including ATEX and IECEx ratings of II 3(1)G Ex ec [ia Ga] IIC T4 Gc, enabling direct wiring to sensors located in Zone 0/20 and Zone 1/21.

What is the measurement resolution of the BECKHOFF ELX3204?
The BECKHOFF ELX3204 features high-performance 16-bit analog-to-digital conversion, allowing temperature resolution up to 0.01 degC per digit depending on the configuration (default is preset to 0.1 degC per digit).

Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
Germany

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