The acceptance criteria for custom-built non-standard automation equipment generally cover multiple aspects. Below are the commonly applied standards:
- Technical Performance Indicators
Functional Completeness: The equipment must perform all functions specified in the contract. It should execute all production tasks according to the predefined process flow and operational requirements, with seamless and fault-free integration between functional modules.
Precision and Accuracy: Depending on its application, the equipment’s processing accuracy, positioning accuracy, and measurement accuracy must meet design specifications and industry standards. For instance, dimensional machining accuracy for non-standard automated machining equipment might be required to be within ±0.01 mm.
Production Efficiency: Under rated operating conditions, the equipment must meet or exceed the agreed-upon production efficiency metrics, such as units produced per hour or processing speed.
Stability and Reliability: The equipment must operate continuously and stably under specified working conditions for a predetermined duration. Unplanned downtime should be below the stipulated threshold, and the Mean Time Between Failures (MTBF) must satisfy contractual requirements.
- Mechanical Structure and Appearance
Mechanical Structure: The mechanical framework must be robust and stable, with all component connections secure and free from looseness or deformation. During operation, mechanical parts should not generate abnormal vibration or noise.
Appearance Quality: The equipment exterior should be clean and aesthetically pleasing, without significant scratches, dents, peeling paint, or other defects. Surface treatments must comply with relevant standards, featuring uniform painting, consistent color, and plating free from peeling or rust.
Safety Guards: The equipment must be equipped with comprehensive safety protection devices, such as guardrails, safety interlocks, emergency stop buttons, and warning signs. These guards must be securely installed in appropriate locations to effectively protect operators.
- Electrical System
Electrical Performance: The electrical system must comply with applicable national standards and industry regulations. This includes good electrical insulation, reliable grounding, and accurate, stable control of equipment operation by the electrical control system, without electrical faults or malfunctions.
Wiring and Identification: Electrical wiring must be neat and standardized. Wire specifications and models should conform to design requirements and be clearly labeled. Components within the electrical control cabinet should be logically arranged for easy operation and maintenance.
Control System Functionality: The control system must feature a comprehensive Human-Machine Interface (HMI) that is user-friendly and intuitive. It should include capabilities for parameter setting, fault alarm indication, and data logging. The system must enable manual/automatic mode switching and integrated control with other equipment.
- Software System
Functional Implementation: The software system must accurately execute all equipment control functions, interfacing seamlessly with the hardware system without software faults or system freezes.
Compatibility and Scalability: The software must demonstrate good compatibility with the operating system, databases, and other software used by the equipment. It should also possess a degree of scalability to facilitate future functional upgrades and maintenance.
Data Management: The software system must include functions for data storage, query, and analysis, enabling effective management of equipment operational data and production data. The accuracy and integrity of this data must be guaranteed.
- Operability and Maintainability
Ease of Operation: Equipment operation should be straightforward and convenient, allowing operators to become proficient in a short time. The HMI should adhere to ergonomic principles, with controls like buttons and handles positioned logically for easy access and use.
Maintainability: The equipment must be designed for easy maintenance. Components should allow for quick and convenient disassembly and replacement, with good accessibility and sufficient workspace for repairs. Necessary maintenance tools and spare parts for wear items should be provided, along with detailed maintenance manuals and operating instructions.
- Environmental Compliance and Safety
Environmental Requirements: Equipment operation must comply with national and local environmental standards. Emissions such as noise, exhaust gases, and wastewater must remain within prescribed limits.
Safety Performance: Beyond the specified safety guards, the overall design and manufacturing of the equipment must conform to relevant safety standards and be free of potential hazards. For example, moving parts must have appropriate safeguarding to prevent operator access to danger zones.
The acceptance process typically involves the customer, the equipment manufacturer, and potentially third-party inspection agencies. They conduct a comprehensive and detailed inspection and testing regimen based on the contract specifications and relevant standards to ensure the equipment meets the customized requirements and intended operational needs.
