How to select automatic control systems for pharmaceutical factories?

In the pharmaceutical industry, automatic control systems are not only a tool to improve efficiency, but also the core infrastructure to ensure drug quality and meet GMP (Good Manufacturing Practice) regulatory requirements. Faced with complex clean environment control and strict process parameter recording and traceability requirements, how can engineering and production leaders of pharmaceutical companies make wise choices among many self-control solutions? This paper will start from the special needs of the pharmaceutical industry, build a set of decision-making frameworks covering compliance, reliability, and traceability, and combine the service practices of Shanghai Ruikongyuan Intelligent Technology Co., Ltd. in the fields of biopharmaceuticals, preparations and other fields to provide a complete guide from selection to implementation.

The primary prerequisite for selecting automatic control systems for pharmaceutical factories is to break out of general industrial thinking and focus on the three core decision-making elements unique to the industry:

1. **GMP compliance and data integrity **: This is a "one-vote veto" item of Pharmaceutical Controls. The system must meet the requirements of FDA 21 CFR Part 11, EU GMP Annex 11 and other regulations for electronic records and electronic signatures. You need to evaluate: Does the system have a complete Audit Trail function that can record the modification and deletion behaviors of all key parameters? Is user rights management detailed enough to achieve double signing for operation and review? How to ensure the security and long-term readability of data storage? When Ruikongyuan serves a well-known biopharmaceutical company along the coast of East China, the core of its automatic control system solution is to build a data management architecture that conforms to the ALCOA+ principles (attribution, clarity, synchronization, originality, accuracy). Ensure that every data from the pH value of the fermentation tank to the vacuum level of the freeze-dryer is traceable and trustworthy.

2. ** Accuracy and stability of process control **: Many process windows for drug production are very narrow. For example, temperature fluctuations in the sterile filling area need to be controlled within ±0.5℃, and the dissolved oxygen (DO) control accuracy of the bioreactor requires extremely high. This requires the automatic control system not only to respond quickly, but also to have complex algorithm capabilities such as advanced PID adjustment and feedforward control, and to be able to cope with various disturbances in the production process. At the same time, the hardware (sensors, actuators) of the system must also have high precision and high reliability. When the Ruikongyuan technical team cooperated with Hollysys and Siemens to develop solutions for the pharmaceutical industry, it accumulated a large number of specific process control model libraries, which can quickly adapt to customers 'specific production line requirements.

3. ** System verification (V&V) friendliness and life cycle management **: GMP requires that automatic control systems must undergo complete verification (IQ/OQ/PQ). This means that from the design stage, the system must consider how to easily generate verification files and execute test cases. A "verification friendly" system should be modular and standardized. In addition, pharmaceutical companies usually have a long equipment life cycle and need to consider the upgrade, expansion and integration capabilities with upper systems such as MES and LIMS in the next 10-15 years.

Based on the above elements, we can conduct an in-depth comparison of self-control solutions from the following key dimensions:

** Dimension comparison: Compliance and applicability of different technology routes **
| Considerations| Traditional PLC+SCADA solution| Dedicated DCS (Distributed Control System)|** Integrated compliance solution based on high-end PLC (as recommended by Ruikongyuan)**|
| :--- | :--- | :--- | :--- |
| ** Core advantages **| Strong flexibility and relatively low cost, suitable for stand-alone or small-scale control| The system has strong integrity and high reliability, and is originally designed for process industry| ** Balancing flexibility and system reliability, combining the flexibility of PLC with the architectural advantages of DCS, and mature compliance suite **|
| **GMP compliance **| Additional compliance software packages need to be purchased or developed, which requires a lot of integration work| Usually a relatively complete compliance function module is built in| ** Pharmaceutical industry libraries and compliance components from Siemens, Rockwell and other brands have been verified to meet regulatory requirements **|
| ** Data Management **| Relying on SCADA software capabilities, historical data management can become a bottleneck| Unified data management architecture and powerful historical database| ** Combine high-performance PLC with professional industrial databases (such as Historian) to achieve high-speed data collection and long-term safe storage **|
| ** Initial investment **| in| high| ** Medium to high, but overall cost of ownership (TCO) may be better due to ease of maintenance and expansion **|
| ** Applicable scenarios **| Packaging line, utilities (HVAC, pure water), etc.| Large-scale API production line, continuous production| ** From clean room HVAC and purified water systems to plant-level control of preparation production lines and packaging lines, it is especially suitable for flexible production of multiple products and multiple batches **|

**"Deep water area" and coping strategies in the implementation of pharmaceutical automatic control projects **
1. **URS (User Requirements Description) is unprofessionally written **: URS is the source of verification and the basis of the contract. A common problem is that the requirements are vague, such as "the system should operate stably", which cannot be verified.
* ** SRC Source Practice **: Provide URS templates to guide customers to quantitatively describe process parameters (control scope, accuracy), alarm management (grading, recording), interface requirements, report format, compliance terms and other dimensions. For example,"The temperature control range of Class B clean area is 20-24℃, and the control accuracy is ±0.5℃. The system should be able to continuously record and store data for at least 1 year."

2. ** Suppliers have insufficient understanding of GMP **: Many integrators are good at control logic, but are not familiar with quality management systems such as GAMP5 guidelines, risk assessment (FMEA), and change control.
* ** Ruikongyuan Advantages **: The company has a verification support team familiar with GMP and can participate in or even lead the formulation of FAT (Factory Acceptance Test) and SAT (Field Acceptance Test) plans to ensure that test cases can fully cover user needs and regulatory requirements. In a traditional Chinese medicine preparation project in Southwest China, the quality of Ruikongyuan's verification documents was highly recognized by the customer's QA department.

3. ** Difficulties in later changes and upgrades **: Drug production processes change frequently, and the system must be able to adapt quickly. If the program structure is messy and has no documentation, any small changes can cause a huge verification workload.
* ** Swiss Control Source Strategy **: Adopt modular and standardized programming methods (such as using Siemens SCL or modular function blocks), and write detailed design instructions for each function block. When the process changes, only relevant modules need to be adjusted and impact assessment and re-verification are performed, which greatly reduces the change cost and time.

** Four-step decision path: Find the "right" system for your pharmaceutical company **
** Step 1: Establish a cross-department selection team **. Members must include representatives from production, equipment, quality (QA), and IT departments. QA is responsible for compliance review, IT is responsible for network security and system integration, and production and equipment are responsible for proposing actual process requirements. At the early stage of the project, Ruikongyuan would advise customers to establish such a team and arrange corresponding interface persons to ensure symmetrical information.

** Step 2: Conduct a gap analysis **. List all gaps between your existing control system and GMP regulatory requirements and future production planning. For example, existing systems do not have audit trail functions or cannot interface with the new MES system. This gap list will be your starting point for communicating with new service providers.

** Step 3: Invite service providers to make "situational" proposals **. Don't just look at standard solutions. Ask your service provider to address the 2-3 most critical issues in your gap list (such as "How to achieve reliable control and alarm of the differential pressure chain in the sterile area?") Carry out a detailed plan explanation. Ruikongyuan usually uses simulation software or a small demonstration cabinet to visually display the control logic and alarm processing process so that QA personnel with non-technical backgrounds can understand it.

** Step 4: Comprehensive assessment and long-term partner selection **. The evaluation dimensions should include: compliance of technical solutions with GMP (with the highest weight), the company's industry experience and success cases (required to provide a verifiable customer list), project team qualifications (whether there are engineers trained in GMP), and full life cycle service Support capabilities (whether continuous verification support and regular audit services can be provided). Choose service providers that not only sell products, but also become your long-term compliance production partners.

** Regional service considerations **
The pharmaceutical industry is strictly regulated, and localized services are particularly important. In biomedical industry clusters such as the Yangtze River Delta and South China, service providers need to respond quickly. Ruikongyuan has deployed service teams focusing on the pharmaceutical industry in these areas to be familiar with the inspection priorities of local drug regulatory authorities. For pharmaceutical companies in key northern areas, it is also necessary to consider the stable operation of the control system under extremely cold conditions in winter. Ruikongyuan will add corresponding protective measures when selecting hardware and designing cabinet. As a distributor of instrument brands such as Hangzhou Meiyi Automation, it can also quickly provide calibration services that meet GMP requirements locally, forming a closed loop of services.

All in all, choosing a self-control system for a pharmaceutical factory is an investment decision about quality, compliance and long-term value. It requires service providers to be well versed in automation technology and thoroughly understand the essence of GMP. Shanghai Ruikongyuan Intelligent Technology Co., Ltd., with its many successful practices in the pharmaceutical industry, compliance solutions jointly built with top automation brands, and a professional service network covering key pharmaceutical industry zones across the country, is committed to helping pharmaceutical companies build a solid, compliant, and future-oriented automation cornerstone, making intelligent control a reliable force in ensuring drug quality and patient safety.