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EP3744-2041 | EtherCAT Box, 4-channel analog input + 8-channel digital combi, pressure, 0…1000 hPa (0…+1 bar), high-precision, M8New

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EP3744-2041 | EtherCAT Box, 4-channel analog input + 8-channel digital combi, pressure, 0…1000 hPa (0…+1 bar), high-precision, M8

EP3744-2041 | EtherCAT Box, 4-channel analog input + 8-channel digital combi, pressure, 0…1000 hPa (0…+1 bar), high-precision, M8

EtherCAT signal input
EtherCAT signal output
M8 I/O connection sockets
Signal status display
Labeling areas
Pressure measurement,
6-mm fitting
Power supply status display:
Box supply (US)
Auxiliary voltage (UP)
Power supply feed
Power supply downstream
connection
1 | Tx+
2 | Rx+
3 | Rx-
4 | Tx-
1 | +24 V DC US
2 | Input
3 | GNDS
4 | Input
1 | +24 V DC US
2 | Output
3 | GNDS
4 | Input
1 | +24 V DC US
2 | +24 V DC UP
3 | GNDS
4 | GNDP
Socket 2 and 3
Socket 0 and 1
Top view 
I/O connection 
Connector assignment 
EP3744-2041 | EtherCAT Box, 4-channel analog input + 8-channel digital combi, pressure, 0…1000 hPa (0…+1 bar), high-precision, M8

EP3744-2041 | EtherCAT Box, 4-channel analog input + 8-channel digital combi, pressure, 0…1000 hPa (0…+1 bar), high-precision, M8

The EP3744-2041 EtherCAT Box, with six digital inputs, two digital outputs, and four pressure inputs, acquires these signals and transmits them to the controller under electrical isolation. The signal status is indicated by LEDs, while the signal interface for the digital signals utilizes 4-pin M8 screw type connectors.

The pressure is measured as an absolute value or as a differential pressure measurement relative to the fifth connection via an integrated 6 mm fitting. The pressure values are available as 16-bit values. Measurement can take place between -1 and +1 bar, with the value output relative to the fifth connection – for instance, for vacuum measurement compared to the ambient pressure at the suction grippers. In absolute pressure mode, pressures between 0 and 1 bar can be measured.

The operating mode is preselected via CoE parameters. If the supply voltages fall below a certain level (< 18.5 V) a diagnostic bit is set.

Product status:

product announcement | estimated market release 4th quarter 2024

Product information

Technical dataEP3744-2041
ProtocolEtherCAT
Bus interface2 x M8 socket, 4-pin, a-coded, shielded
Number of inputs4 x pressure, 6 x digital
Number of outputs2 x digital
Connection methoddigital signals: 4-pin M8; pressure measurement: 6 mm fitting
Conversion time~ 3.5 ms
Resolution1 mbar per digit
Signal typeair pressure
Measuring range0…1 bar (0…15 psi)/
-1…1 bar (-15…15 psi)
Measurement error/uncertainty1 %
Distributed clocksyes
Input filter10 µs (for digital inputs)
SpecificationEN 61131-2, type 1/3
Max. output current0.5 A per channel, individually short-circuit proof
Load typeohmic, inductive, lamp load
Short-circuit currenttyp. 1.5 A
Sensor supplyfrom load supply voltage, max. 0.5 A, short-circuit proof in total
Current consumption from US120 mA
Power supply connectionfeed: 1 x M8 male socket, 4-pin, a-coded; downstream connection: 1 x M8 female socket, 4-pin, a-coded
Electrical isolation500 V
Special featuresdirect pressure measurement at the machine
Operating/storage temperature-25…+60°C/-40…+85°C
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.IP65/66/67 (conforms to EN 60529)/variable
Approvals/markingsCE, UL
Housing data8 x M8, 4 x M12
Dimensions (W x H x D)30 mm x 126 mm x 26.5 mm
MaterialPA6 (polyamide)
Installation2 fixing holes 3.5 mm diameter for M3

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