EL4112 BECKHOFF

EL4112 BECKHOFF Filter Modules

Product  Description：

Beckhoff Filter Modules, primarily represented within the EtherCAT I/O system (such as the EL9xxx series and specialized mains filter terminals), are dedicated hardware components designed to protect industrial automation systems from electrical noise and signal interference. These modules attenuate high-frequency disturbances, stabilize supply voltages, and ensure that sensitive analog and digital signals remain uncorrupted. By integrating directly into the standard terminal rail, they provide targeted electromagnetic compatibility (EMC) protection for controllers, networks, and field devices.

Product Parameters

The technical characteristics of Beckhoff Filter Modules focus on frequency attenuation, current capacity, and signal integrity standards:

• Rated Voltage: Supports standard industrial control voltages, typically up to 24V DC for signal lines, and up to 230V AC or 480V AC for power mains filtering.

• Current Carrying Capacity: Varies by model, with signal line filters handling low currents (e.g., 0.5A to 2A) and power line filters managing up to 16A or more.

• Attenuation Frequency Range: Optimized to suppress high-frequency noise, effectively filtering disturbances from 100 kHz up to 30 MHz.

• Insertion Loss: High attenuation performance, often specified up to 40 decibels or more in the target high-frequency interference bands.

• Internal Capacitance and Inductance: Engineered with precisely matched low-inductance capacitors and suppression chokes to minimize reactive power while maximizing filtering.

• Connection Type: Utilizes Beckhoff's standard direct insertion cage clamp technology (Push-in wire connection) for secure, vibration-resistant wiring.

Product Advantages

Integrating Beckhoff Filter Modules into a control system offers several strategic operational benefits:

• Enhanced Signal Quality: Greatly improves the measurement accuracy of adjacent analog input modules by removing high-frequency ripples from the sensor power lines.

• Space-Saving Architecture: Eliminates the need for bulky, external third-party filters since these modules click directly onto the standard DIN rail alongside regular I/O terminals.

• Seamless EtherCAT Integration: Fits perfectly into the standard EtherCAT Terminal block, maintaining the uniform system appearance and mechanical locking mechanism.

• Protection Against Common-Mode Noise: Effectively dampens common-mode and differential-mode interference generated by neighboring variable frequency drives (VFDs) and switching power supplies.

• Increased System Reliability: Prevents unexpected controller resets, fieldbus communication errors, and hardware degradation caused by transient voltage spikes on the power rail.

Product Applications

These modules are critical in automated environments with high levels of electromagnetic interference:

• High-Precision Measuring Stations: Protecting sensitive weight, temperature, and pressure signals from ambient factory noise before the data reaches the PLC.

• Servo and Motion Control Systems: Placed on the power supply lines immediately preceding high-speed servo drives to block regenerative switching noise from feeding back into the control logic.

• Heavy Industrial Machinery: Used in welding cells, plasma cutting plants, and heavy stamping presses where massive electrical arcs and inductive switching create severe grid disturbances.

• Marine and Offshore Automation: Ensuring clean power distribution within onboard ship control cabinets that run off isolated generator networks.

• Semiconductor and Cleanroom Equipment: Providing ultra-stable voltage baselines required for high-sensitivity wafer processing and inspection instrumentation.

Important Precautions

To ensure maximum noise suppression and prevent damage to the module or system, the following implementation guidelines must be followed:

• Grounding Path: The effectiveness of a filter module depends heavily on its ground connection. Ensure the DIN rail itself is connected to a low-impedance functional earth ground with a thick, short conductor.

• Correct Placement: For optimal results, place the filter module as close as possible to the source of the noise or immediately upstream of the sensitive components being protected.

• Current Overload Prevention: Never exceed the rated current specification of the module. Overloading the filter can cause thermal saturation of the internal inductive cores, rendering the filter ineffective and creating a fire hazard.

• Separation of Cables: Keep the filtered "clean" wires physically separated from the unfiltered "dirty" input cables. Running them in the same wire duct allows noise to couple back into the clean lines via electromagnetic induction.

• Insulation Testing: Disconnect the filter module before performing high-voltage insulation tests (such as Megger testing) on the control cabinet, as the internal surge suppression components can skew test results or suffer permanent damage.

The structure and details of the product：

Our services：

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Warranty: one year

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