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• • • • • • • • • • • • • • Beckhoff EL3742 Analog Input Terminal

                            Product Type: EtherCAT Analog Input Terminal
                            Model: EL3742
                            Function: 2-Channel Analog Current Input
                            Manufacturer: Beckhoff Automation

                            The Beckhoff EL3742 is a high-speed 2-channel differential analog input terminal for 0–20 mA signals. It features 16-bit resolution, configurable oversampling up to 100×, sampling rates up to 100 kS/s per channel, and EtherCAT Distributed Clocks for precise synchronized measurements.

                            Technical Specifications

                            Parameter	Specification
                            Model	EL3742
                            Product Type	EtherCAT Analog Input Terminal
                            Number of Inputs	2
                            Input Type	Differential
                            Input Signal	0–20 mA
                            Resolution	16 bit
                            Maximum Sampling Rate	100 kS/s per channel
                            Sampling Time	10 µs
                            Oversampling Factor	1–100 selectable
                            Input Bandwidth	0–30 kHz recommended
                            Internal Resistance	Approx. 85 Ω + diode voltage
                            Common-Mode Voltage	Max. ±10 V
                            Conversion Time	Approx. 10 µs
                            Measurement Error	< ±0.3% of full scale
                            Distributed Clocks	Yes
                            DC Precision	<100 ns
                            Electrical Isolation	500 V
                            E-bus Current	Approx. 200 mA
                            Operating Temperature	-25°C to +60°C
                            Storage Temperature	-40°C to +85°C
                            Protection Rating	IP20
                            Mounting	35 mm DIN rail
                            Dimensions	Approx. 12 × 100 × 68 mm
                            Weight	Approx. 60 g

                            The EL3742 supports simultaneous sampling of both channels and configurable oversampling from 1 to 100.

                            Advantages & Features

                            • 2-Channel Differential Input: Supports two independent 0–20 mA signals.
                            • 16-Bit Resolution: Provides precise analog measurement.
                            • High-Speed Sampling: Up to 100 kS/s per channel.
                            • Oversampling Technology: Allows multiple measurements within one EtherCAT cycle.
                            • Distributed Clocks: Enables highly accurate synchronization with other EtherCAT devices.
                            • Electrical Isolation: 500 V isolation between E-bus and signal voltage.
                            • Low Measurement Error: Less than ±0.3% of full scale under specified conditions.
                            • Compact Design: Approximately 12 mm wide for space-efficient cabinet installation.
                            • Industrial Communication: Direct integration with EtherCAT and TwinCAT systems.

                            Typical Applications

                            • Industrial automation
                            • Process control
                            • High-speed data acquisition
                            • Pressure and flow measurement
                            • Industrial instrumentation
                            • Machine monitoring
                            • Motor and drive monitoring
                            • Factory automation
                            • Test and measurement systems
                            • EtherCAT control systems

The structure and details of the product：

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