Product Overview

The Beckhoff EL3602 is a high-precision analog input EtherCAT terminal. It handles voltage signals in ranges of ±10 V, ±5 V, ±2.5 V, and ±1.25 V. The terminal digitizes voltage to a resolution of 24 bits. The Beckhoff EL3602 transmits measurements in electrically isolated form to the automation device. Users trust this terminal for high-accuracy voltage measurement applications.

Technical Specifications

The EL3602 delivers high-precision voltage measurement with flexible ranging. Below are the complete technical details.

General Specifications

• Product Type: EtherCAT Terminal.

• Part Number: EL3602 for precise identification.

• Product Status: Regular delivery.

• Number of Inputs: 2 (differential) channels.

• Technology: Differential input.

• Weight: Approx. 60 g for lightweight installation.

• Design Form: Compact terminal housing with signal LEDs.

Voltage Input Ranges

• Signal Voltage: -10 to +10 V (parameterizable).

• Signal Voltage: -5 to +5 V (parameterizable).

• Signal Voltage: -2.5 to +2.5 V (parameterizable).

• Signal Voltage: -1.25 to +1.25 V (parameterizable).

• Range Selection: Software-selectable per channel.

Input Specifications

• Internal Resistance: Greater than 200 kΩ for minimal loading.

• Input Filter Limit Frequency: 3 kHz.

• Common-Mode Voltage (UCM): 35 V maximum.

• Crosstalk Attenuation: Greater than 60 dB.

• Ground Potential: Common internal ground for both channels.

Resolution and Conversion

• Resolution: 24 bit (including sign) for high precision.

• Conversion Time (Default): 20 ms.

• Conversion Time (Configurable): 1 to 400 ms.

• Distributed Clocks: Not supported.

• Oversampling Factor: Not supported.

Accuracy and Error

• Measuring Error at 25°C: Less than ±0.01% relative to full scale.

• Filter Condition: 50 Hz filter applied.

• High Precision: Special feature for critical measurements.

Special Features

• Various Filter Times: Configurable for noise rejection.

• Limit Value Monitoring: For alarm detection.

• High Precision: 24-bit resolution with 0.01% error.

• Electrical Isolation: 500 V (E-bus/signal voltage).

Power Specifications

• Power Supply: Via the E-bus.

• Current Consumption (E-bus): Typ. 190 mA.

• Current Consumption (Power Contacts): Not used.

Housing and Mechanical Data

• Material: Polycarbonate for durability.

• Dimensions (W x H x D): 12 mm x 100 mm x 68 mm.

• Installation: 35 mm DIN rail conforming to EN 60715 with lock.

• Side by Side Mounting: Double slot and key connection.

• Marking: Labeling of BZxxx series.

Wiring Specifications (EL3602)

• Solid Conductor (s*): 0.08 to 2.5 mm².

• Stranded Wire (st*): 0.08 to 2.5 mm².

• With Ferrule (f*): 0.14 to 1.5 mm².

• AWG Solid: AWG 28 to 14.

• AWG Stranded: AWG 28 to 14.

• AWG with Ferrule: AWG 26 to 16.

• Stripping Length: 8 to 9 mm.

• Termination: Spring actuation by screwdriver.

Wiring Specifications (ES3602 - Pluggable)

• Solid Conductor: 0.08 to 1.5 mm².

• Stranded Wire: 0.08 to 1.5 mm².

• With Ferrule: 0.14 to 1.5 mm².

• AWG Solid: AWG 28 to 16.

• AWG Stranded: AWG 28 to 16.

• AWG with Ferrule: AWG 26 to 16.

• Stripping Length: 9 to 10 mm.

Power Contact Specifications

• Current Load Power Contacts: Imax: 10 A.

Environmental Specifications

• Operating Temperature: -25 to +60°C.

• Storage Temperature: -40 to +85°C.

• Relative Humidity: 95% without condensation.

• Vibration Resistance: Conforms to EN 60068-2-6.

• Shock Resistance: Conforms to EN 60068-2-27.

• EMC Immunity: Conforms to EN 61000-6-2.

• EMC Emission: Conforms to EN 61000-6-4.

• Protection Rating: IP20.

• Installation Position: Variable.

Approvals and Markings

• CE: Conforms to European standards.

• UL: Underwriters Laboratories approved.

• ATEX: Ex marking II 3 G Ex nA IIC T4 Gc.

Installation Guide

Follow these steps to install the Beckhoff EL3602 correctly.

1. Power Down the System: Turn off all power to the EtherCAT network.

2. Mount DIN Rail: Ensure 35 mm DIN rail conforms to EN 60715.

3. Attach Terminal: Clip the EL3602 onto the DIN rail until it locks.

4. Connect E-bus: Insert the terminal into an existing EtherCAT terminal block.

5. Side Mounting: Use double slot and key connection for adjacent terminals.

6. Strip Wires: Remove 8 to 9 mm of insulation from each conductor.

7. Terminate Wires: Insert wires using spring actuation by screwdriver.

8. Connect Voltage Signals: Wire differential voltage sources to the 2 channels.

9. Select Voltage Range: Configure ±10V, ±5V, ±2.5V, or ±1.25V in software.

10. Apply Power: Turn on the E-bus supply (no external power needed).

11. Check LEDs: Observe signal state via light emitting diodes.

12. Set Conversion Time: Configure from 1 to 400 ms as needed.

13. Verify Accuracy: Expect less than ±0.01% measuring error at 25°C.

14. Monitor Resolution: Confirm 24-bit resolution with sign.

Installation Notes

• The terminal has differential inputs with common internal ground.

• Maximum common-mode voltage is 35 V for protection.

• Default conversion time is 20 ms for most applications.

• Electrical isolation is 500 V between E-bus and signal voltage.

• The ES3602 version offers pluggable wiring for easy replacement.

Packaging List

This unit ships as a new and original product.

• Beckhoff EL3602 EtherCAT Terminal (2-channel analog input)

• Product data sheet

• Spring actuation tool information

• Anti-static factory packaging bag

Frequently Asked Questions (FAQ)

1. What voltage ranges does the EL3602 support?
The Beckhoff EL3602 supports ±10 V, ±5 V, ±2.5 V, and ±1.25 V. All ranges are software-parameterizable per channel.

2. What is the resolution of the EL3602?
The EL3602 provides 24-bit resolution including sign. This ensures high-precision voltage measurement for critical applications.

3. What is the measuring error of this terminal?
The Beckhoff EL3602 has a measuring error of less than ±0.01% at 25°C relative to full scale value. A 50 Hz filter is applied.

4. What is the conversion time of the EL3602?
The EL3602 has a default conversion time of 20 ms. This is configurable from 1 to 400 ms for application flexibility.

5. Does the EL3602 have ATEX approval?
Yes, the Beckhoff EL3602 carries ATEX approval with Ex marking II 3 G Ex nA IIC T4 Gc. It also has CE and UL certifications.