Processing high-accuracy current measurements in industrial environments is executed with precision using the Beckhoff EL3621-0020 EtherCAT Terminal. This single-channel differential analog input module handles signal levels from 4 to 20 mA with a highly detailed 24-bit resolution. Each terminal is factory-calibrated, offering an exceptional measuring error margin of less than +/-0.01 % at 25 degC. Operating directly on the EtherCAT I/O system, it bridges the gap between field sensors and centralized controllers with reliable E-bus communication.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Beckhoff |
| Model Number | EL3621-0020 |
| Number of Inputs | 1 (Differential) |
| Input Signal Current | 4 to 20 mA |
| Resolution | 24-bit (including sign) |
| Internal Resistance | typ. 85 Ohm + diode voltage |
| Input Filter Limit Frequency | 3 kHz |
| Common-Mode Voltage (Ucm) | max. 10 V DC |
| Conversion Time | 1 to 400 ms (configurable) |
| Measurement Error (at 25 degC) | < ±0.01 % (relative to full scale, 50 Hz filter) |
| Electrical Isolation | 500 V (E-bus / signal voltage) |
| E-Bus Current Consumption | typ. 190 mA |
| Crosstalk Attenuation | > 60 dB |
| Housing Material | Polycarbonate |
| Protection Rating | IP20 |
| Operating Temperature | 0 to 50 degC |
| Storage Temperature | -25 to 85 degC |
| Dimensions (W x H x D) | 12 mm x 100 mm x 68 mm |
| Net Weight | approx. 60 g |
| Shipping Weight (Calculated) | 2.0 kg (including secure export packaging) |
| Connection Parameter | Specification Limits |
|---|---|
| Wiring Technology | Spring actuation via screwdriver |
| Solid Conductor (e) | 0.08 to 2.5 mm² (AWG 28 to 14) |
| Flexible Conductor (f) | 0.08 to 2.5 mm² (AWG 28 to 14) |
| Conductor with Ferrule (a) | 0.14 to 1.5 mm² (AWG 26 to 16) |
| Stripping Length | 8 to 9 mm |
The module provides a factory-calibrated alternative to standard analog inputs where sub-0.01 % accuracy is imperative. Please note that this terminal relies exclusively on the E-bus for power. It does not possess feed-through power contacts, so it must be factored into the overall E-bus current budget calculations when replacing standard, lower-consumption modules.
Due to the 190 mA E-bus current consumption of this terminal, installing multiple high-precision modules side-by-side can quickly deplete the couplers feed capacity. Use an intermediate power supply terminal (such as the EL9410) if the total bus consumption exceeds the coupler rating. Avoid placing high-power switching relays immediately adjacent to this card to prevent EMI-induced drift in the 24-bit AD converter.
To achieve the factory-calibrated accuracy of less than 0.01 %, use shielded twisted-pair (STP) cabling for the 4 to 20 mA analog signal path. Ensure the cable shield is grounded at the entry point of the control panel. In TwinCAT 3, adjust the conversion filter settings to match the grid frequency (50 Hz or 60 Hz) to optimize common-mode noise rejection.
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Manufacturer: BECKHOFF
Product No.: EL3621-0020
Country of origin:Germany
Product Type: EtherCAT Terminals
Payment: T/T, Western Union
Weight: 2000g
Dimensions: 12 mm x 100 mm x 68 mm
Shipping port: Xiamen
Warranty: 12 months
Processing high-accuracy current measurements in industrial environments is executed with precision using the Beckhoff EL3621-0020 EtherCAT Terminal. This single-channel differential analog input module handles signal levels from 4 to 20 mA with a highly detailed 24-bit resolution. Each terminal is factory-calibrated, offering an exceptional measuring error margin of less than +/-0.01 % at 25 degC. Operating directly on the EtherCAT I/O system, it bridges the gap between field sensors and centralized controllers with reliable E-bus communication.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Beckhoff |
| Model Number | EL3621-0020 |
| Number of Inputs | 1 (Differential) |
| Input Signal Current | 4 to 20 mA |
| Resolution | 24-bit (including sign) |
| Internal Resistance | typ. 85 Ohm + diode voltage |
| Input Filter Limit Frequency | 3 kHz |
| Common-Mode Voltage (Ucm) | max. 10 V DC |
| Conversion Time | 1 to 400 ms (configurable) |
| Measurement Error (at 25 degC) | < ±0.01 % (relative to full scale, 50 Hz filter) |
| Electrical Isolation | 500 V (E-bus / signal voltage) |
| E-Bus Current Consumption | typ. 190 mA |
| Crosstalk Attenuation | > 60 dB |
| Housing Material | Polycarbonate |
| Protection Rating | IP20 |
| Operating Temperature | 0 to 50 degC |
| Storage Temperature | -25 to 85 degC |
| Dimensions (W x H x D) | 12 mm x 100 mm x 68 mm |
| Net Weight | approx. 60 g |
| Shipping Weight (Calculated) | 2.0 kg (including secure export packaging) |
| Connection Parameter | Specification Limits |
|---|---|
| Wiring Technology | Spring actuation via screwdriver |
| Solid Conductor (e) | 0.08 to 2.5 mm² (AWG 28 to 14) |
| Flexible Conductor (f) | 0.08 to 2.5 mm² (AWG 28 to 14) |
| Conductor with Ferrule (a) | 0.14 to 1.5 mm² (AWG 26 to 16) |
| Stripping Length | 8 to 9 mm |
The module provides a factory-calibrated alternative to standard analog inputs where sub-0.01 % accuracy is imperative. Please note that this terminal relies exclusively on the E-bus for power. It does not possess feed-through power contacts, so it must be factored into the overall E-bus current budget calculations when replacing standard, lower-consumption modules.
Due to the 190 mA E-bus current consumption of this terminal, installing multiple high-precision modules side-by-side can quickly deplete the couplers feed capacity. Use an intermediate power supply terminal (such as the EL9410) if the total bus consumption exceeds the coupler rating. Avoid placing high-power switching relays immediately adjacent to this card to prevent EMI-induced drift in the 24-bit AD converter.
To achieve the factory-calibrated accuracy of less than 0.01 %, use shielded twisted-pair (STP) cabling for the 4 to 20 mA analog signal path. Ensure the cable shield is grounded at the entry point of the control panel. In TwinCAT 3, adjust the conversion filter settings to match the grid frequency (50 Hz or 60 Hz) to optimize common-mode noise rejection.
Global Express Shipping
Returns & 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 .
| Country of origin |
Germany
|
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