How to set multi-speed speed regulation for multiple EFUs? Work, duty and equipment linkage logic
Direct answer: Multiple EFU systems are often set to working, on-duty and shutdown states. The core of the control logic is not the three buttons, but which EFUs run in each state, at what speed, when to switch, how to give feedback, and what actions the system takes when a single unit fails.
Divide control areas by equipment and process areas
Zoning can be based on equipment units, process sections, maintenance boundaries or operating shifts. Each zone should clearly define the number of EFUs, address range and control authority to prevent one command from affecting unrelated equipment.
Define gear levels using cleaning requirements
The working mode should meet the minimum protection requirements under normal production air volume and duty mode. Whether shutdown mode is completely shut down should be determined based on equipment contamination risks, backflow, and customer process specifications.
Establish clear switching conditions
The mode can be switched by manual, schedule, master equipment signal or host computer instructions. It is necessary to define the status after switching delay, soft start, power failure recovery, communication interruption and emergency stop.
Set up communication and status feedback
When using RS485 and other communications, the address, baud rate, terminal connection and communication lines should be planned. Feedback content can include operation, speed, fault and offline status, and the specific scope is determined by the project.
Verify normal and abnormal scenarios during joint debugging
In addition to starting and stopping each unit one by one, batch startup, power restoration, single unit offline, communication interruption, mode switching and parameter permissions should also be tested. Test records should correspond to the device program version.
FAQ
What speed should be set in duty mode?
There is no uniform percentage and should be determined based on minimum clean air supply requirements and on-site verification.
Can multiple EFUs be started at the same time?
It is necessary to combine the power supply capacity, starting strategy and control system design, and start in batches or delayed start when necessary.
Should the entire zone be shut down if one EFU fails?
Depending on the process risks and control strategy, this should be predefined in the equipment safety and cleanliness requirements.
How does Aili Industrial cooperate with the configuration of multiple EFU control systems?
When multiple EFUs are used in the same equipment or clean area, different speed gears such as working, duty, and standby can be set according to the production status. In the working state, it operates according to the air volume required by the process; when the equipment is suspended or running at low load, it can be switched to the duty speed; in the shutdown state, whether to continue the low-speed air supply is determined according to the equipment cleanliness maintenance requirements.
Multi-speed speed regulation requires unified confirmation of the number of EFUs, grouping methods, speed ranges, switching conditions, communication protocols and exception handling logic. If there are differences in system resistance or air supply area at different locations, each group of EFU may also need to use different speed settings.
Aili Industry can provide complete EFU machines and control system packages, and set up local control, group control, multi-stage speed regulation and RS485 communication according to project requirements. In the early stage of the project, the equipment operation process, number of EFUs, regional divisions and linkage signals can be provided to facilitate the determination of work, duty and equipment linkage plans.
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Conclusion: For multi-speed control of multiple EFUs, the cleanliness target of each mode should be defined first, and then the partition, rotation speed, switching conditions, communication address and exception strategy should be determined. The same mode name does not mean that all areas use the same rotation speed.
