Beckhoff EL3443-0011 EtherCAT Terminal 3-channel Analog Input Power Measurement Terminal

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Manufacturer: BECKHOFF
Product No.: EL3443-0011
Country of origin:Germany
Product Type: EtherCAT Terminals
Payment: T/T, Western Union
Weight: 2000g
Dimensions: 120 mm x 80 mm x 25 mm
Shipping port: Xiamen
Warranty: 12 months

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Designed for precise 3-phase AC/DC grid analysis, the Beckhoff EL3443-0011 functions as a high-performance power measurement terminal within the EtherCAT I/O system. This module enables direct measurement of current and voltage in supply networks, calculating key electrical parameters with high resolution and transmitting them directly to the controller via the high-speed EtherCAT bus.

Key Features

3-channel voltage and 3-channel current measurement for comprehensive 3-phase power analysis.
High-resolution 24-bit analog-to-digital conversion for precise grid diagnostics.
Comprehensive parameter calculation including active, reactive, and apparent power, energy, cos phi, frequency, and harmonic analysis up to the 40th harmonic.
Mains monitoring capabilities with precise zero-voltage crossing detection.
Supports optional single-phase operation for versatile system integration.

Applications

Industrial power monitoring and energy management systems (EMS).
Grid quality analysis in manufacturing plants and substations.
Machine-level consumption tracking and predictive maintenance.
Integration with wind turbines, solar inverters, and generator sets.

Technical Specifications

Parameter	Specification
Manufacturer	Beckhoff
Model	EL3443-0011
Number of Inputs	3 x current, 3 x voltage
Technology	3-phase power measurement
Measuring Voltage	max. 480 V AC 3-phase (ULX-N: max. 277 V AC / 240 V DC)
Measuring Current	100 mA (AC/DC), via measuring transformers x A / 100 mA
Resolution	24 bit
Measuring Error	0.3% relative to full scale value (U/I), 0.6% calculated value
Update Interval	One mains period (20 ms at 50 Hz)
Update Time	Net-synchronous
Electrical Isolation	2500 V
Current Consumption E-bus	typ. 120 mA
Operating Temperature	0 to +55 degC
Storage Temperature	-25 to +85 degC
Relative Humidity	95 %, non-condensing
Vibration/Shock Resistance	Conforms to EN 60068-2-6 / EN 60068-2-27
Material	Polycarbonate
Dimensions (W x H x D)	12 mm x 100 mm x 68 mm
Shipping Weight	2.0 kg
Package Dimensions (Calculated)	120 mm x 80 mm x 25 mm

Connection Specifications

Conductor Type	Cross-Section Range	Stripping Length
Solid Conductor (s)	0.08 to 2.5 mm2 (AWG 28 to 14)	8 to 9 mm
Stranded Conductor (st)	0.08 to 2.5 mm2 (AWG 28 to 14)	8 to 9 mm
Flexible Conductor with Ferrule (f)	0.14 to 1.5 mm2 (AWG 26 to 16)	8 to 9 mm

Empirical Engineering Insights

Alternative Models & Compatibility

The EL3443-0011 is specifically calibrated for 100 mA current transformer (CT) secondary outputs. It must not be confused with the standard EL3443-0000 (which supports 1 A or 5 A CTs). Attempting to connect a 1 A/5 A CT directly to the EL3443-0011 will saturate the inputs and can permanently damage the internal shunt resistors.

Application Pitfalls & Engineering Notes

When measuring highly distorted grids, ensure that the harmonic analysis (up to the 40th harmonic) does not exceed the processing bandwidth of your TwinCAT cycle time. If cycle times are set too low, high-frequency CoE uploads of harmonic data can cause E-bus communication timeouts.

Commissioning & Wiring Tips

Always ensure that the current transformer polarity (K-L / P1-P2) matches the voltage phase allocation. Incorrect polarity or mismatched phases will result in negative active power readings and incorrect power factor (cos phi) calculations in the TwinCAT System Manager.

Installation Guidelines

CRITICAL WARNING: Risk of fatal electrical shock and equipment destruction. Always de-energize all voltage measurement lines and current transformer primary circuits before installing, removing, or wiring the terminal. Never open the secondary circuit of an active current transformer, as dangerously high open-circuit voltages will occur. Ensure the E-bus power contacts are completely isolated before mounting.

Mount the EL3443-0011 onto a standard 35 mm DIN rail (conforming to EN 60715) by sliding it until the lock mechanism engages securely.

Connect the voltage measurement lines to the designated terminals, ensuring correct phase assignment (L1, L2, L3, N).

Connect the 100 mA secondary outputs of your current transformers to the current inputs, observing correct polarity.

Power up the E-bus and configure the terminal parameters in TwinCAT System Manager, setting the correct transformer ratios.

Key Features:

What is the maximum voltage rating for the EL3443-0011?

The terminal supports a maximum measuring voltage of 480 V AC 3-phase. For UL applications, the maximum phase-to-neutral voltage is 277 V AC and 240 V DC.

Can I use standard 1 A or 5 A current transformers with this module?

No, this model is designed specifically for 100 mA AC/DC secondary current inputs. Connecting 1 A or 5 A transformers directly will damage the internal shunt circuitry.

What parameters are calculated by the internal processor?

It calculates active, reactive, and apparent power/energy, power factor (cos phi), frequency, total harmonic distortion (THD), and individual harmonics up to the 40th harmonic.

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TECHNICAL SPECIFICATIONS

Country of origin

Beckhoff EL3443-0011 EtherCAT Terminal 3-channel Analog Input Power Measurement Terminal