Power monitoring oversampling terminal EL3773
IL3 error
IL2 error
IL1 error
Meas. error
L3 error 
L2 error 
L1 error 
Run LED 
L1
L2
L3
N
IL1
IL2
IL3
IN
Top view 
Contact assembly 
XFC – eXtreme Fast Control
extended shock and vibration range

EL3773 | Power monitoring oversampling terminal

eXtreme Fast ControlThe EtherCAT Terminal EL3773 is a power monitoring terminal for state monitoring of a 3-phase AC voltage system. For each phase voltages up to 288 Veff/410 V DC and currents up to 1 Aeff/1.5 A DC are sampled as instantaneous values with a resolution of 16 bits. The six channels are measured simultaneously based on the EtherCAT oversampling principle with a temporal resolution of up to 100 µs and passed on to the control system. The control system has sufficient computing power for true RMS or performance calculation and complex custom algorithms based on the measured voltages and currents. Through the oversampling principle 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. The EL3773 supports distributed clocks and can therefore measure synchronous with other EtherCAT devices.

Technical data EL3773
Number of inputs 3 x current, 3 x voltage
Technology 3-phase power monitoring for alternating/direct voltages
Oversampling factor n = 1…100 selectable
Distributed clocks yes
Conversion time min. 100 µs, all channels simultaneously
Measured values current (I1, I2, I3), voltage as instantaneous values (oversampling)
Measuring voltage max. 500 V AC 3~ (ULX-N: max. 288 V AC), max. 410 V DC
Measuring current max. 1 A (AC)/1.5 A (DC), via measuring transformers x A AC/1 A AC
Resolution 16 bit (incl. sign)
Measuring error 0.5 % relative to full scale value
Electrical isolation 2500 V
Current consumption power contacts
Current consumption E-bus 200 mA
Special features oversampling, AC/DC measurement, single-phase operation also possible, adjustable hardware filters
Weight approx. 75 g
Operating/storage temperature 0…+55 °C/-25…+85 °C
Relative humidity 95 %, no condensation
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos. IP 20/variable
Approvals CE, UL