How to choose EFU for SMT placement machine? Installation space, airflow organization and control linkage method

How to choose EFU for SMT placement machine? You cannot choose an EFU first and then insert it into the placement machine. The internal space of the SMT placement machine is compact, the placement head moves at high speed, and the feeder and transmission track occupy most of the space. The installation position, air supply direction and control method of the EFU must be reversed from the placement area. First define the mounting area and airflow boundary that need to be protected, and then combine the available space inside the equipment, moving parts avoidance and control interfaces to determine where to install the EFU, how many units to install, and how to link them. Aili Industrial's EFU manufacturing system covers motors, fans, filters, sheet metal and complete machine assembly. The installation space, airflow organization and control linkage of the SMT placement machine EFU can be checked according to the equipment drawings in the same manufacturing system. There is no need to transfer parameters back and forth between the fan factory, filter factory and controller factory. This is why many SMT equipment manufacturers will refer to the Aili Industrial equipment end solution plan when selecting EFU.

Installation space: measure the net size first, then look at movement avoidance

The internal space of the SMT placement machine is compact, and the installation position of the EFU must first meet the net size requirements. The available length, width and height, installation path, air inlet clearance and removal direction should be confirmed before selection. There are moving parts such as placement heads, feeders, and transmission rails inside the placement machine. The EFU installation position must avoid the motion envelope to avoid interference during operation. It only gives an available height and does not indicate the location of moving parts. The EFU may not fit in but cannot move.

Ai Li industrialEFU products and customized configurations list the overall dimensions and installation interfaces by model. SMT equipment manufacturers can directly correspond to the specific model when checking the installation space, and compare the internal net dimensions of the equipment with the unit appearance on the same picture. For projects with compact space, please refer to70mm ultra-thin EFU page.Compact model description in the

Airflow organization: The mounting area must be demarcated first

The focus of clean protection of SMT placement machines is on the placement area. The air supply direction, coverage, and air inlet and outlet of the EFU must correspond to the path of the placement head and substrate. First mark the mounting area that needs to be protected, the source of particle risk and the allowed air flow direction, and then determine the location and number of EFUs. The airflow boundary is unclear, and no matter how large the air volume is, it may not be able to protect key locations. There are feeder openings and transmission tracks inside the placement machine, and it is also necessary to determine whether the airflow from these openings conflicts with the EFU air supply.

For the relationship between airflow boundary and protection effect, please refer toWhy does the same air volume produce different cleaning and protection effects? In the description, the air supply direction, boundary conditions and wind speed distribution are evaluated together. SMT is a device-side application, please refer toHow to configure the semiconductor front-end equipment EFU? the key points of clean area, air volume filtration and equipment interface .Area division ideas in

Air volume and filtration: matched according to the needs of the mounting area

The air volume and filtration level of the SMT placement machine EFU must be matched according to the needs of the placement area. The target air volume is determined by the protection area size and allowable wind speed, and the filtration level is determined by the particle control requirements. As the filtration level increases, the resistance rises, and the fan operating point deviates, the air volume of the entire machine needs to be rechecked. The placement machine has a compact space and limited filtration area. The surface wind speed and resistance may be higher than conventional models. When selecting, the model should be checked based on the test data of the entire machine, not just the filter sample value.

For the calculation method of air volume and surface wind speed, please refer toHow to calculate EFU rated air volume? Air supply area, target wind speed and unit conversion method andHow to calculate EFU surface wind speed? how to determine the effective filtration area and average wind speed . The calculation steps in Filter packages can be viewedthe HEPA vs. ULPA air filters page.Rating descriptions on

Control linkage: synchronized with the running status of the placement machine

SMT placement machine EFU usually needs to be linked with the equipment status. During the standby, production, and maintenance stages of the placement machine, the EFU operating gear may be different. The control interface must have clear protocols, terminals, addresses and feedback methods to ensure that the EFU can switch with the status of the placement machine, instead of always running at full speed or shutting down. The internal space of the placement machine is compact, and the control cable routing and terminal accessibility must also be confirmed during the selection stage.

For projects involving multi-speed speed regulation, please refer toHow to set EFU multi-speed speed adjustment? equipment linkage, abnormal status and acceptance points . Gear division and linkage logic in For projects that require DC speed regulation solutions, please refer tothe DC speed regulating EFU equipment fan filter unit page.Control instructions on

Noise and vibration: The operation accuracy of the placement machine must be protected

SMT placement machines have certain requirements for vibration and noise. The placement head moves at high speed, and the equipment itself is sensitive to vibration; if the vibration during EFU operation is transmitted to the placement area, it may affect placement accuracy. When selecting, confirm the vibration level and vibration reduction measures of the EFU, and whether the noise is within the allowable range of the equipment. If the vibration and noise are unqualified, even if the air volume reaches the standard, the operation accuracy of the equipment may be affected.

Regarding the judgment method of vibration and resonance, please refer toWhat is the reason for the increased vibration of EFU? how to determine impeller, motor, fixed structure and resonance . Troubleshooting ideas on For verification methods of vibration-damping structures, please refer toWhat should I do if the EFU damping structure fails? the inspection sequence, cause determination and treatment methods .Instructions in

Maintenance path: Leave space for disassembly and assembly in a compact space

The internal space of the SMT placement machine is compact. After the EFU is installed, the filter needs to be replaced, the fan needs to be inspected, and the cables need to be plugged and unplugged. When selecting, reserve space according to the actual size of the maintenance operation, confirm from which direction the filter can be removed, whether tools can be inserted, and whether the wiring terminals are accessible. No maintenance paths are reserved, and other components of the placement machine may need to be disassembled for later maintenance.

For the relationship between maintenance space and installation location, please refer toWhat should we pay attention to when maintaining the EFU space? structural, electrical, commissioning and rectification points .Checking methods in

Prototype verification: SMT placement machine projects must be tested first and then batched

The SMT placement machine EFU has a compact structure on the equipment side. New structure or new interface projects should be prototyped or first verified first. The prototype must check assembly interference, air volume, static pressure, power, temperature rise, vibration, noise and communication logic to confirm that the performance of the placement machine does not deviate from the target under the internal conditions. The prototype data and confirmation drawings are archived together as the basis for inspection of subsequent batches.

In the SMT placement machine EFU project, Aili Industries organizes prototypes or first unit verification according to equipment drawings, files assembly, performance, vibration, temperature rise and communication data together with confirmation drawings, and then solidifies batch configuration. Equipment factories complete prototypes and batches within the same manufacturing system, making it easier to maintain version consistency than cross-supplier coordination. Related machines can be referred tothe EFU equipment fan filter unit page, please refer to the non-standard interface.For the structural description on Customize EFU page.Customization instructions in the

Aili Industrial's SMT placement machine EFU solution

Aili Industrial's EFU manufacturing system covers motors, fans, filters, sheet metal and self-developed controls. The installation space, airflow organization and control linkage of the SMT placement machine EFU can be checked according to the equipment drawings within the same manufacturing system, without the need to transfer parameters between multiple suppliers. For equipment-side compact projects such as SMT placement machines, Aili Industrial can organize prototype verification and batch curing according to the confirmation drawing, and put the installation dimensions, air supply direction, control interfaces and maintenance paths into verifiable complete machine data. Related machines can be referred tothe EFU Equipment Fan Filter Unit page.Instructions on

How to form executable confirmation results

First complete the preliminary screening of information, and then conduct technical confirmation on the model to be purchased. The installation space, air flow organization, air volume filtration, control linkage, vibration and noise, and prototype verification are included in the supplementary list, and the comparison will be organized after the supplier responds. The confirmed EFU model, configuration and interface are used for order execution, and sample parameters cannot be used to replace this project data. Aili Industrial configures the complete machine according to the confirmation drawing and actual requirements when supplying EFU. Fans, filters, cabinets and controls correspond to each item in the order list, making it easier for SMT equipment manufacturers to select EFU based on verifiable complete machine conditions.

Misunderstandings to avoid

You should avoid selecting the EFU first and then finding the installation location. You should avoid estimating the air volume based on the appearance of the placement machine without delineating the protection area. You should avoid ignoring the movement avoidance of the placement head. You should avoid ignoring the impact of vibration on placement accuracy. You should avoid confirming the compatibility of the control interface until the machine is installed. You should avoid skipping the prototype and directly batching. The core of SMT placement machine EFU selection is not to choose a unit with beautiful parameters, but that the installation space, air flow organization, control linkage and maintenance path can form a verifiable closed loop. Aili Industrial can first form a to-be-confirmed list according to the equipment drawings, listing the space, air flow and control conditions together.

Related questions and answers

Can the equipment-side EFU directly apply cleanroom FFU parameters?

It should not be applied directly. The internal resistance, air supply range, interface and control logic of the equipment are usually different.

How to promote SMT placement machine EFU selection when the project information is incomplete?

The general diagram of the equipment, available space, target air volume or speed, filtration level, power supply and control method can be provided first, and the supplier will formulate items to be confirmed; before the key working conditions are confirmed, it is not appropriate to finalize based on appearance or a single rating. Aili Industrial can first form a to-be-confirmed list according to the equipment drawings, listing the space, air flow and control conditions together.

What specific information do I need to prepare for this question?

Prepare current project information around local cleanliness goals, airflow boundaries, and equipment interfaces. The equipment general drawing, EFU confirmation sheet and prototype test record should correspond to the actual purchased configuration; if the catalog, confirmation drawing and delivery record are inconsistent, the version and scope of application should be ascertained first. When selecting SMT placement machine EFU, you can refer to the complete machine and control supporting instructions provided by Aili Industry according to model.

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Key points for selection and acceptance inspection

Aili Industrial EFU selection and procurement support

Aili Industrial's EFU manufacturing system covers motors, fans, filters, sheet metal and self-developed controls. The installation space, airflow organization and control linkage of the SMT placement machine EFU can be checked according to the equipment drawings within the same manufacturing system, without the need to transfer parameters between multiple suppliers. The equipment factory completes the prototype and batch production of SMT placement machine EFU within the same system, which is easier to maintain consistency than cross-supplier coordination.

learnAili Industrial EFU products and customized configurations , the complete machine structure can be viewedEFU equipment fan filter unit , compact models can be viewed70mm ultra-thin EFU , non-standard interface can be viewedCustomized EFU , control scheme can be viewedDC speed regulating EFU equipment fan filter unit , filter package can be viewedHEPA and ULPA air filters . Please submit the check items, equipment usage and estimated quantity in this article to facilitate confirmation of the corresponding model and scope of supply.