Beckhoff EL3773 PLC Module
Beckhoff EL3773 PLC Module
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
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.
EL3773
Technical data EL3773
Number of inputs 3 x current, 3 x voltage
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
Measuring range, technical generally 100% of the nominal measuring range, see documentation
Resolution 16 bit (incl. sign)
Measurement error/uncertainty 0.5% relative to full scale value
Electrical isolation 2500 V
Current consumption E-bus 200 mA
Current consumption power contacts –
Special features oversampling, AC/DC measurement, optional single-phase operation, adjustable hardware filters
Weight approx. 75 g
Operating temperature 0…55°C
Storage temperature -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. rating/installation pos. IP20/variable
Approvals/markings CE, UL
Technical data
Housing data
Housing data EL-12-8pin
Design form compact terminal housing with signal LEDs
Material polycarbonate
Installation on 35 mm DIN rail, conforming to EN 60715 with lock
Side by side mounting by means of double slot and key connection
Marking labeling of the BZxxxx series
Wiring solid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver
Connection cross-section s*: 0.08…2.5 mm²,
st*: 0.08…2.5 mm²,
f*: 0.14…1.5 mm²
Connection cross-section AWG s*: AWG28…14.
st*: AWG28…14.
f*: AWG26…16
Stripping length 8…9 mm
Current load power contacts Imax: 10 A
Dimensions (W x H x D) 12 mm x 100 mm x 68 mm