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EL3773 | EtherCAT Terminal, 3-channel analog input, multi-function, 500 V AC/DC, 1 A, 16 bit, 10 ksps, oversampling

EL3773 | EtherCAT Terminal, 3-channel analog input, multi-function, 500 V AC/DC, 1 A, 16 bit, 10 ksps, oversampling

EL3773 | EtherCAT Terminal, 3-channel analog input, multi-function, 500 V AC/DC, 1 A, 16 bit, 10 ksps, oversampling

Run LED
L1 error
L2 error
L3 error
Meas. error
IL1 error
IL2 error
IL3 error
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Top view 
Contact assembly 
EL3773 | EtherCAT Terminal, 3-channel analog input, multi-function, 500 V AC/DC, 1 A, 16 bit, 10 ksps, oversampling

EL3773 | EtherCAT Terminal, 3-channel analog input, multi-function, 500 V AC/DC, 1 A, 16 bit, 10 ksps, oversampling

EtherCAT oversampling: maximum sampling rates irrespective of the EtherCAT cycle time

Distributed Clocks: the integrated time management system in EtherCAT

Highly scalable: EtherCAT Terminals for energy management

Measurement technology easily configured: Analog EtherCAT input terminals.

Measurement technology simply integrated: With the analog EtherCAT Terminals.

EtherCAT oversampling: maximum sampling rates irrespective of the EtherCAT cycle time

Distributed Clocks: the integrated time management system in EtherCAT

Highly scalable: EtherCAT Terminals for energy management

Measurement technology easily configured: Analog EtherCAT input terminals.

Measurement technology simply integrated: With the analog EtherCAT Terminals.

The EL3773 and EL3783 power monitoring terminals are designed for state monitoring of 3-phase AC voltage systems. For each phase voltages and currents are sampled as instantaneous values with a resolution of 16 bits:

  • for the EL3773 up to 288 Vrms/410 V DC and up to 1 Arms/1.5 A DC
  • for the EL3783 up to 400/690 V AC and up to 5 A AC, each with “ExtendedRange”

The six channels are measured simultaneously based on the EtherCAT oversampling principle with a temporal resolution of up to 100 μs (EL3773) or up to 50 μs (EL3783) and passed on to the control system. With the processing power available there and in combination with the TwinCAT Function TF3650, true RMS or power calculations as well as complex user-specific algorithms can be calculated via the voltage and current characteristics. Through the oversampling, the terminal is able to measure at significantly shorter intervals than the cycle time of the control system. AC and DC parameters must be connected and measured with a common reference potential. Both of the terminals support distributed clocks and can therefore measure synchronously with other EtherCAT devices. However, they can also be operated without distributed clocks.

The EL3783 offers the “ExtendedRange” feature enabling the use of the full technical measuring range, which equals 130 % of the specified nominal measuring range.

Product status:

regular delivery

Product information

Technical dataEL3773
Number of inputs3 x current, 3 x voltage
Technology3-phase power monitoring for alternating/direct voltages
Signal typesingle-ended
Oversampling factorn = 1…100 selectable
Distributed clocksyes
Conversion timemin. 100 µs, all channels simultaneously
Measured valuescurrent (I1, I2, I3), voltage as instantaneous values (oversampling)
Measuring voltagemax. 500 V AC 3~ (ULX-N: max. 288 V AC), max. 410 V DC
Measuring currentmax. 1 A (AC)/1.5 A (DC), via measuring transformers x A AC/1 A AC
Measuring range, technicalgenerally 100 % of the nominal measuring range, see documentation
Resolution16 bit (incl. sign)
Measurement error/ uncertainty0.5 % relative to full scale value
Electrical isolation2500 V
Current consumption power contacts
Current consumption E-bus200 mA
Special featuresoversampling, AC/DC measurement, optional single-phase operation, adjustable hardware filters
Weightapprox. 75 g
Operating/storage temperature0…+55 °C/-25…+85 °C
Relative humidity95%, no condensation
Vibration/shock resistanceconforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emissionconforms to EN 61000-6-2/EN 61000-6-4
Protect. rating/installation pos.IP20/variable
Approvals/markingsCE, UL
Housing dataEL-12-8pin
Design formcompact terminal housing with signal LEDs
Materialpolycarbonate
Dimensions (W x H x D)12 mm x 100 mm x 68 mm
Installationon 35 mm DIN rail, conforming to EN 60715 with lock
Side by side mounting by means ofdouble slot and key connection
Markinglabeling of the BZxxx series
Wiringsolid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver
Connection cross-sections*: 0.08…2.5 mm²,
st*: 0.08…2.5 mm²,
f*: 0.14…1.5 mm²
Connection cross-section AWGs*: AWG28…14,
st*: AWG28…14,
f*: AWG26…16
Stripping length8…9 mm
Current load power contactsImax: 10 A

*s: solid wire; st: stranded wire; f: with ferrule

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