EMC & Thermal Management
EMI/RFI fi lters and material handling equipment
GD Rectifi ers partners with Enerdoor to provide state-of-the-art EMI/RFI fi lters designed for material handling equipment, carrying UKCA, CE and UL approvals
M
aterial handling equipment is used in various markets including industrial, automotive, medical, semiconductor, oil & gas,
food & beverage, and retail warehouses. As industrial automation and material handling equipment becomes more computerised, the vulnerability of equipment to electromagnetic interference (EMI) increases. Filtering and shielding devices against EMI are crucial to ensure uninterrupted operation and intended output.
Within industrial settings machines operate close to each other making them vulnerable to interference and reliant on EMC fi lters to prevent RF noise interruptions. This is especially important as interference may cause controls to malfunction, causing faulty outputs, accidents, or production loss due to machine failure.
As one of the largest EMC fi lter
manufacturers in the world, Enerdoor provides state-of-the-art EMC fi lters and power quality devices designed for material handling equipment for every industry and application.
Common industrial sources of EMI/RFI
Industrial environments are full of potential sources of interference due to
electronic device connections that may cause electromagnetic or radio frequency interference (RFI). Common industrial sources of EMI include: ● Servo and variable frequency drives (VFDs): This is the most common source of RF noise in the industrial automation environment. These drives switch frequencies typically between 2 kHz and 20 kHz, to generate a pulse for regulating motor that can spread through the entire system including even the ground. The RF noise is common (phases and ground)
and differential (phase to phase) and is considered high frequency noise in the 9 kHz – 50 MHz frequency range.
● Harmonics: Non-linear load devices that do AC–DC, such as power supplies, servo- drives and VFDs can cause high-frequency harmonics of the fundamental AC frequency. These harmonics can cause AC waveform distortion which can cause power electronics and machines to malfunction. The odd harmonics are out of phase from the fundamental frequency causing the majority of equipment malfunctions. Harmonics are considered very low-frequency noise in the frequency range of 150 Hz – 3 kHz.
CE and UKCA Certifi cation The UKCA (UK Conformity Assessed) marking is a new UK product marking that is used for goods being placed on the market in Great Britain. The UKCA marking came into effect on 1st January 2021. However, to allow businesses time to adjust to the new requirements, the CE marking can be used until 1st January 2023, in most cases. With a CE mark, products can be sold in the EU and in some other countries, including Turkey. The UKCA marking is the CE conformance equivalent and is required for relevant goods to be sold in Great Britain.
18 June 2022 Components in Electronics
Certifi cation testing service Material handling equipment manufacturers are often challenged to achieve CE and UKCA Certifi cation because their drives generate high frequency noise which may cause malfunctions with sensors, encoders, HMI screens and e-stops within systems, as well as with other nearby machines.
A potential machine compliance failure can compromise the launch of a project and it’s time to market. Customers looking to improve the likelihood of their product passing rigorous EMC testing and reducing the risk of failure, should consider pre- compliance testing a part of the product development process.
As one of the top-ranked CE labs in the world, Enerdoor offers a wide range of testing methods and standard compliance. Enerdoor’s fl at rate, on-site CE and UKCA testing is said to be unique to the industry and so is the manufacturer’s guarantee in fi nding customers a solution.
Benefi ts of EMI/RFI fi lters EMI/RFI fi lters solve problems associated with electromagnetic noise associated with high frequency switching inside VFDs. The fi lters suppress interference generated by a device, or by other equipment, and protect devices
www.cieonline.co.uk
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