3RH11401BB40 SIEMENS Filter Module

Description

3RH11401BB40 SIEMENS Filter Module

Product Dimensions：

Product Description

A Siemens Filter Module is typically installed within a control cabinet to suppress electromagnetic interference (EMI) originating from the power supply or high-frequency switching devices. These modules act as low-pass filters, allowing the desired electrical current to pass through while attenuating high-frequency noise. They are often used in conjunction with power supplies or sensitive analog I/O modules to prevent “crosstalk” and voltage spikes from affecting the logic controller. Their design is optimized for industrial environments, featuring robust housing and high-quality capacitive or inductive components to stabilize the internal electrical environment of the automation system.

Product Parameters

The performance of a filter module is defined by its ability to handle load current and its effectiveness at various noise frequencies:

• Rated Voltage: The maximum operating voltage the filter can handle, supporting both DC and AC standards.

• Rated Current: The maximum continuous current that can flow through the module without causing overheating.

• Attenuation Level: Specified in decibels (dB), indicating the degree to which the module reduces interference at specific frequency ranges.

• Leakage Current: The small amount of current that flows to the earth ground through the filter components.

• Temperature Range: The ambient operating limits within which the module maintains its filtering characteristics.

• Mounting Type: Generally designed for standard rail mounting to integrate seamlessly with other PLC components.

Product Advantages

• Improved System Reliability: By eliminating electrical noise, these modules prevent erratic behavior in CPUs and communication modules.

• Signal Integrity: Ensures that analog measurements remain accurate and are not distorted by nearby high-power equipment.

• Regulatory Compliance: Helps the entire control cabinet meet international EMC standards and CE requirements.

• Equipment Longevity: Protects sensitive downstream electronics from repetitive high-frequency transients that can lead to premature component failure.

• Space-Saving Design: Compact form factors allow for installation in crowded cabinets without requiring significant redesigns.

Important Considerations and Precautions

• Proper Grounding: The effectiveness of a filter module is almost entirely dependent on a low-impedance connection to the functional earth ground.

• Current Limits: Never exceed the rated current of the module, as this can lead to saturation of the internal inductors and a total loss of filtering efficiency.

• Placement: For maximum effectiveness, the filter should be installed as close as possible to the source of the interference or the entry point of the power supply.

• Wiring Separation: Input and output cables of the filter should be kept physically separate to prevent the noise from “jumping” across the wires and bypassing the filter.

• Heat Dissipation: Ensure adequate air circulation, as filtering high-frequency noise can generate a small amount of heat within the module.

Product Applications

• Power Supply Conditioning: Cleaning the incoming power before it reaches the PLC CPU or sensitive electronic loads.

• Analog Signal Protection: Shielding high-precision analog inputs from the electrical noise generated by nearby motor drives or large contactors.

• Communication Stability: Preventing interference on data lines in environments with heavy electromagnetic activity.

• Industrial Drive Systems: Reducing the high-frequency harmonics produced by variable frequency drives (VFDs) within the control cabinet.

• Precision Manufacturing: Protecting sensitive measurement and weighing electronics from industrial grid fluctuations.

Shipping Port: Xiamen, China

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