FDK: 085U0236 SIEMENS Filter Module

Description

FDK: 085U0236 SIEMENS Filter Module

Product Dimensions：

Product Description

A filter module is an auxiliary hardware component used to stabilize the power supply or clean the signal paths in an industrial control cabinet. In environments where large motors, variable frequency drives, or switching power supplies are present, electromagnetic interference (EMI) can cause erratic behavior in PLCs or introduce inaccuracies in analog readings. Siemens filter modules use high-quality inductive and capacitive components to suppress these surges and harmonics. They are typically installed at the input stage of a power supply or integrated into the I/O rack to safeguard the internal system bus and field-side circuits.

Product Parameters

The technical characteristics of filter modules focus on their ability to attenuate noise and handle specific electrical loads:

• Rated Voltage and Current: Specifies the maximum voltage (AC or DC) and the continuous current the module can carry without overheating.

• Attenuation Range: The frequency spectrum (measured in Hz to MHz) over which the filter effectively suppresses electromagnetic noise.

• Leakage Current: The amount of current that flows to the protective earth (PE) during operation, which is critical for choosing the correct residual current device (RCD).

• Insertion Loss: A measure of the filter’s effectiveness in reducing the signal power of the interference.

• Ambient Temperature Rating: The temperature range within which the module can operate at full capacity, often designed for high-heat industrial cabinets.

• Mounting Type: Generally designed for standard DIN rail mounting to match the form factor of the associated PLC or power supply system.

Product Advantages

• Increased System Stability: By eliminating electrical noise, these modules prevent unexpected CPU stops and communication errors, leading to higher plant uptime.

• Signal Integrity: Ensures that analog measurements remain precise and jitter-free, even in the presence of heavy industrial machinery.

• Compliance with EMC Standards: Helps the entire control cabinet meet rigorous international electromagnetic compatibility requirements (CE, UL).

• Extended Hardware Lifespan: Protects internal electronic components from the stress of repetitive high-frequency spikes and voltage transients.

• Passive Reliability: Many filter modules are passive devices, meaning they do not require complex software configuration and have a very long operational life.

Important Considerations

• Proper Grounding: The effectiveness of a filter module is almost entirely dependent on a low-impedance connection to the protective earth; poor grounding renders the filter ineffective.

• Installation Placement: To be most effective, filters should be installed as close as possible to the source of interference or the point where the power enters the cabinet.

• Cable Routing: It is vital to separate the “dirty” input cables from the “clean” output cables to prevent the noise from jumping back onto the filtered lines through induction.

• Current Derating: If operating in high-temperature environments, the maximum allowable current may need to be reduced to prevent thermal damage to the internal coils.

• Correct Sizing: Choosing a filter with a current rating that is too low will cause excessive heat, while a rating that is too high may result in less efficient noise suppression.

Product Applications

• VFD Interference Suppression: Used in systems with many variable frequency drives to prevent high-frequency switching noise from affecting the PLC control logic.

• Sensitive Analog Measurement: Protecting temperature, pressure, and flow signal lines in process automation where precision is critical.

• Power Supply Protection: Filtering the incoming mains power before it reaches the 24V DC power supply units that feed the PLC and HMI.

• Long Cable Runs: Employed in distributed I/O systems where long signal cables may act as antennas for electromagnetic noise.

• Telecommunications Integration: Ensuring that industrial network communication is not disrupted by the heavy electrical loads of the surrounding factory environment.

Shipping Port: Xiamen, China

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