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EL3742 | EtherCAT Terminal, 2-channel analog input, current, 0…20 mA, 16 bit, oversampling

EL3742 | EtherCAT Terminal, 2-channel analog input, current, 0…20 mA, 16 bit, oversampling

EL3742 | EtherCAT Terminal, 2-channel analog input, current, 0…20 mA, 16 bit, oversampling

Run LED 1
Run LED 2
Power contact
+24 V
Power contact 0 V
+Input 1
-Input 1
GND
Shield
+Input 2
-Input 2
GND
Shield
Top view 
Contact assembly 
EL3742 | EtherCAT Terminal, 2-channel analog input, current, 0…20 mA, 16 bit, oversampling

EL3742 | EtherCAT Terminal, 2-channel analog input, current, 0…20 mA, 16 bit, oversampling

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

Distributed Clocks: the integrated time management system in EtherCAT

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

Measurement technology easily configured: Analog EtherCAT input terminals.

Measurement technology simply integrated: With the analog EtherCAT Terminals.

The EL3742 analog input terminal handles signals in the range between 0 and 20 mA. The voltage is digitized to a resolution of 16 bits, and is transmitted, electrically isolated, to the controller. The input channels of the EtherCAT Terminal have differential inputs and possess a common, internal ground potential. The signals are oversampled with an adjustable, integer multiple (oversampling factor: n) of the bus cycle frequency (n microcycles per bus cycle). For each bus cycle, the EtherCAT Terminal generates a process data block that is collected and transferred during the next bus cycle. The time base of the terminal can be synchronized precisely with other EtherCAT devices via distributed clocks. This procedure enables the temporal resolution of the analog input signals to be increased to n times the bus cycle time. In conjunction with the EL47xx (analog output terminal with oversampling), responses with equidistant time intervals, e.g. in the event of a threshold value being exceeded, become possible. The distributed clocks function enables several EL3742 devices to be synchronized in almost any configuration. The maximum sampling rate per channel is 100 ksamples/s (100,000 samples/s).

Product status:

regular delivery

Product information

Technical dataEL3742
Number of inputs2 (differential)
Power supplyvia the E-bus
Technologydifferential input, oversampling
Signal typedifferential
Signal current0…20 mA
Max. sampling ratemax. 10 µs/100 ksps (per channel, simultaneously)
Oversampling factorn = 1…100 selectable
Input signal bandwidth0…30 kHz recommended
Distributed clocksyes
Distributed clock precision<< 1 µs
Internal resistancetyp. 85 Ω + diode voltage
Input filter limit frequency80 kHz
Common-mode voltage UCMmax. 10 V
Conversion timemin. 10 µs
Resolution16 bit (incl. sign)
Measurement error/ uncertainty< ±0.3 % (relative to full scale value) up to 10 Hz input signal
Surge voltage resistancemax. 35 V
Electrical isolation500 V (E-bus/signal voltage)
Current consumption power contacts
Current consumption E-bustyp. 200 mA
Bit width in the process imageinput: n x 2 x 16 bit data; optionally 2 x 16 bit cycle counter, 4 byte StartNextLatch time
Special featuresoversampling
Weightapprox. 60 g
Operating/storage temperature-25…+60 °C/-40…+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
Pluggable wiringfor all ESxxxx terminals
Approvals/markingsCE, UL, ATEX, IECEx
Ex markingATEX:
II 3 G Ex nA IIC T4 Gc
IECEx:
Ex ec IIC T4 Gc
Housing dataEL-12-8pinES-12-8pin
Design formcompact terminal housing with signal LEDsterminal housing with pluggable wiring level
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
s*: 0.08…1.5 mm²,
st*: 0.08…1.5 mm²,
f*: 0.14…1.5 mm²
Connection cross-section AWGs*: AWG 28…14,
st*: AWG 28…14,
f*: AWG 26…16
s*: AWG 28…16,
st*: AWG 28…16,
f*: AWG 26…16
Stripping length8…9 mm9…10 mm
Current load power contactsImax: 10 A

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

Ordering information
EL3742EtherCAT Terminal, 2-channel analog input, current, 0…20 mA, 16 bit, oversampling
ES3742EtherCAT Terminal, 2-channel analog input, current, 0…20 mA, 16 bit, oversampling, pluggable wiring

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