Beckhoff ELM3704-0000 ELM Series EtherCAT Terminal

SKU ELM3704-0000

In stock

12-month warranty
Free returns within 30 days

Manufacturer: BECKHOFF
Product No.: ELM3704-0000
Origin Germany
Product Type: EtherCAT Terminals
Payment: T/T, Western Union
Weight: 0.35 kg
Dimensions: 30 mm x 100 mm x 95 mm
Shipping port: Xiamen
Warranty: 12 months

Product Description

Description

High-precision measurement in industrial testing, laboratory setups, and automation environments is achieved with the Beckhoff ELM3704-0000 multi-function measurement module. This EtherCAT Terminal features four analog input channels capable of high-speed, high-resolution data acquisition at up to 24 bits. It operates in highly synchronized networks using Distributed Clocks technology, achieving synchronization accuracy well below 1 microsecond.

Designed for versatile signal acquisition, the module supports differential signal configurations and flexible connection mechanics. Built within a rugged zinc die-cast housing, it ensures structural stability and thermal dissipation for industrial environments. Advanced onboard signal processing functions, including TrueRMS calculation, PeakHold, integrator/differentiator operations, and custom non-linear scaling, allow immediate engineering value extraction directly at the I/O level.

Features

Four high-precision multi-function analog input channels.
High-resolution analog-to-digital conversion up to 24 bits (including sign).
Simultaneous acquisition with a sampling rate of up to 10 ksps (100 us) per channel.
Selectable oversampling factor from n = 1 to 100.
Flexible wiring options supporting 2-, 3-, 4-, 5-, and 6-wire connection configurations.
Integrated diagnostic features, including broken wire and short-circuit detection.
Robust zinc die-cast housing equipped with status LEDs for diagnostic visualization.

Applications

Industrial test benches and engine dynamometers.
High-speed manufacturing quality control and inline inspection systems.
Vibration analysis and structural health monitoring.
Multi-sensor calibration and laboratory testing systems.

Technical Specifications

Parameter	Specification
Manufacturer	Beckhoff
Part Number / Model	ELM3704-0000
Number of Channels	4
Technology	Multi-function
Signal Type	Differential
Resolution	24 bit (including sign)
Max. Sampling Rate	10 ksps (100 us) per channel, simultaneous
Oversampling Factor	n = 1 to 100 selectable (max. 10 ksamples/s)
Internal Resistance	> 500 kOhm (60 V); > 4 MOhm (others); 150 Ohm (current)
Measuring Error	typ. < +/-100 ppm / +/-0.01% in specific ranges (relative to full scale)
Temperature Coefficient	typ. < 1 ppm/K in specific ranges
Functional Diagnostics	Yes
Connection Diagnostics	Broken wire / short circuit
Distributed Clocks	Yes, accuracy well under 1 us
Electrical Isolation Channel/Bus	707 V DC (type test)
Electrical Isolation Channel/SGND	707 V DC (type test)
E-bus Current Consumption	typ. 890 mA
Thermal Dissipation	typ. 3 W
Material	Zinc die-cast
Design Form	Metal housing with signal LEDs
Mounting Method	35 mm DIN rail (conforming to EN 60715) with lock
Dimensions (W x H x D)	30 mm x 100 mm x 95 mm
Weight	approx. 350 g
Operating Temperature	0 to +55 degC
Storage Temperature	-25 to +85 degC

Connections and Interfaces

Connection Parameter	Specification
Connection Type	Push-in, service plug 6-pin
Connection Technology	2-/3-/4-/5-/6-wire
Solid Conductors (e)	Direct plug-in technique
Fine-stranded Conductors (f) & Ferrule (a)	Spring actuation via screwdriver
Solid Conductor Cross-section (s*)	0.2 to 1.5 mm2 (AWG 24 to 14)
Stranded Conductor Cross-section (st*)	0.2 to 1.5 mm2 (AWG 24 to 14)
Fine-stranded Conductor Cross-section (f*)	0.25 to 0.75 mm2 (AWG 24 to 14)
Stripping Length	8 to 9 mm

Installation Guidelines

Mounting: Mount horizontally on a 35 mm DIN rail according to EN 60715. Ensure the locking lever is securely engaged.
Side-by-Side Placement: Connect adjacent terminals using the integrated double slot and key system to maintain mechanical alignment.
Wiring: Insert solid conductors directly into the push-in clamp. For fine-stranded or ferruled wiring, actuate the internal spring with a flat-head screwdriver before insertion.
Grounding: Guarantee low-resistance functional grounding via the DIN rail to optimize high-frequency noise rejection.
Thermal Considerations: Maintain adequate clearance above and below the module to allow convection cooling. Ensure operating ambient temperatures stay within the specified range of 0 to +55 degC.

Compliance and Certifications

Shipping & Returns

Global Express Shipping

Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our technical warranty.

FAQ

What is the primary function of the Beckhoff ELM3704-0000?

The Beckhoff ELM3704-0000 is a 4-channel multi-function analog input terminal built for high-accuracy and high-speed data acquisition on EtherCAT networks.

What is the maximum sampling rate of the ELM3704-0000?

It provides a maximum sampling rate of 10 ksps (100 microseconds) per channel simultaneously, with selectable oversampling up to n = 100.

What connection configurations are supported?

It supports 2-, 3-, 4-, 5-, and 6-wire connection technologies via 6-pin push-in service plugs.

Does this terminal support Distributed Clocks (DC)?

Yes, it supports Distributed Clocks with synchronization precision well below 1 microsecond.

What built-in signal processing options are available?

The module features hardware-based processing functions including TrueRMS, PeakHold, integrator/differentiator, free numeric filter, and non-linear scaling.

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