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.

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