Several companies offer pellet mills with advanced automation features, but the right answer depends on how far the buyer wants automation to extend. A motorized feeder and overload alarm automate a machine. Recipe-driven roller settings automate the pelleting process. MES, SCADA, traceability and production planning automate the factory. These are different investment levels and should not be treated as the same product.
Using a research-style framework similar to those used by major industrial market-analysis firms, this report compares RICHI Machinery, Van Aarsen, Ottevanger and Yemmak. The assessment covers machine control, recipe intelligence, plant integration, production data, safety, serviceability and commercial fit. It also uses published data and actual project examples while keeping model-specific and whole-factory capacities separate.
What counts as advanced pellet mill automation?
| Automation layer | Typical functions | Buyer value |
|---|---|---|
| Level 1: machine protection | Interlocks, overload protection, temperature monitoring and emergency bypass | Protects people and equipment |
| Level 2: closed-loop machine control | Feeder load control, automatic lubrication, roller-gap setting and slip detection | Stabilizes capacity and reduces operator intervention |
| Level 3: recipe automation | Stored machine parameters, steam settings, die speed and product changeover logic | Improves repeatability across formulas and shifts |
| Level 4: line integration | Grinding, batching, mixing, pelleting, cooling, screening and routing control | Prevents one section from creating a bottleneck elsewhere |
| Level 5: MES and business data | Planning, OEE, energy, inventory, traceability, reports and ERP interfaces | Turns production data into management decisions |
A research-grade comparison should ask whether a function is standard or optional, which variables it controls, whether it works at machine or plant level, and how performance is verified. The numbers below are manufacturer-published reference points. Actual output and energy depend on formula, particle size, moisture, pellet diameter, die compression ratio, steam quality, configuration and operator settings.
RICHI Machinery: scalable automation for customized turnkey plants
RICHI Machinery combines industrial pellet equipment with complete project engineering. The company has 30+ years of manufacturing experience, serves projects in 140+ countries, and supplies complete feed production lines from 1–160 T/H. Its standalone feed pellet mill family covers 1–40 T/H; this family range is not a rating for one machine, and final output must be confirmed for the customer’s formulation and operating conditions.
RICHI’s automation strength is configurability. A project can begin with PLC control and variable-frequency drives for key machines, then expand to computerized batching, formula management, production reports, alarms and coordinated routing between grinding, mixing, pelleting, cooling, screening and packing. In an applicable computerized batching configuration, RICHI’s internal engineering reference specifies 10–14 batches per hour and 99.8% batching accuracy. These figures depend on bin arrangement, batch size, ingredient flow, scale design and calibration, so they should be written into a project-specific acceptance test rather than assumed for every plant.
A practical example is a multi-formula poultry and livestock feed plant. The control system can call a stored recipe, verify ingredient routing, meter macro and micro ingredients, record actual weights, regulate material flow to the pellet mill and coordinate cooler discharge. If a scale exceeds tolerance or the wrong route is selected, the system can alarm or stop the sequence. This reduces manual transcription and makes the batch record useful for quality investigation.
RICHI is strongest when the buyer wants automation matched to budget and labor conditions rather than a fixed premium package. A regional feed producer can automate the high-risk sections first and retain simpler local operation elsewhere. The turnkey team can also coordinate installation, commissioning and operator training. Buyers should define I/O lists, report formats, remote-support boundaries, spare-parts delivery lead times and data-backup responsibilities before contract signing.
Van Aarsen: recipe-directed roller control and detailed machine diagnostics
Van Aarsen’s C and CU pellet mill range reaches published capacities of up to 70 T/H, depending on recipe and operating parameters. The range includes die diameters from 600 to 1,200 mm, die speeds from approximately 4.7 to 11.4 m/s across listed configurations, and main-drive options extending to twin 355 kW motors on the CU1200 Titan.
The CU Dynamic platform is especially relevant to advanced automation. Motor-operated roller adjustment allows the control system to use formula-specific gap settings. Active roller-slip detection monitors individual rollers and intervenes when slip begins: the rollers can be repositioned and reset, the operator can be notified, and persistent slip can stop product supply. A die-cleaning mode supports batch-end cleaning and easier restart.
Van Aarsen also publishes a 12-inch touchscreen as the standard operator interface, with a 19-inch option, parameter trending for load, product temperature and capacity, plus alarm history. The Quick Fit die system has an approximate stated change time of 30 minutes. The manufacturer reports that controlled roller positioning can extend die and roller life by up to 30% by preventing metal-to-metal contact during empty running. These are design claims that should be validated against the buyer’s maintenance baseline.
Best fit: feed plants where recipe-to-recipe consistency, automatic mechanical adjustment and diagnostic transparency justify higher control complexity. Buyer check: confirm which dynamic features are included, how recipes are secured, and how the system exchanges data with existing SCADA or MES infrastructure.
Ottevanger: MES-driven production and operator-independent settings
Ottevanger approaches automation from both machine and factory levels. Its Progress MonoRoll uses one large roller, variable die speed through an optional frequency converter, central lubrication and a pneumatic quick-dump chute. The manufacturer states that its High Efficiency configuration can deliver up to 30% more output at the same energy level. It also presents operating choices of at least 15% more capacity or approximately 15% lower energy use while maintaining capacity. These alternatives are not additive and require validation for the actual formula.
The stronger automation differentiator is Batch Explorer MES, developed using experience from more than 250 feed mills worldwide. It can manage raw-material intake, stock, bins, micro ingredients, formulations, dosing, per-recipe machine settings and outloading. Optimal settings from one production order can be stored and reused, reducing dependence on individual operator memory.
An actual example is the MonoRoll installation highlighted at Raiffeisen, where the single-roller design was used to improve production performance. At system level, Ottevanger’s Gantt-based planning can display contamination constraints, screen changes and die changes. Barcode workflows support manual and ultra-low-volume dosing, while track-and-trace reports link ingredients to finished orders. XML, database and REST API interfaces support paperless exchange with external software.
Best fit: multi-product compound-feed plants that want MES, traceability and recipe intelligence to coordinate the entire factory. Buyer check: define interface ownership, cybersecurity, software support, database retention and the procedure for running the mill during a server or network interruption.
Yemmak: automation proven at large turnkey feed-mill scale
Yemmak supplies pellet mills, process equipment, automation and turnkey factories. Its automation case evidence is useful because it shows scale beyond the pellet press. The Şenpiliç project is published as a 240 T/H fully automated feed mill covering roughly 30,000 m² and eight main systems, including intake, sieving, premix, production, storage and soy processing. This is total factory capacity, not the capacity of one pellet mill.
A second example is the Proyem plant: a 100 T/H, approximately 40,000 m² fully automated feed factory with five pellet lines, three using double pelleting, designed to produce five feed categories including cattle feed. These projects demonstrate coordination of multiple lines, storage systems and production routes under one control concept.
At machine level, Yemmak’s wood pellet mill family illustrates its sensor and maintenance approach: 500–5,000 kg/h published capacity, 520, 660 and 900 mm die options, and 160–355 kW motors depending on raw material, pellet diameter and duty. The machines use automated safety sensors and an online-controllable lubrication system. Although this example is biomass-specific, the control principles—machine protection, lubrication monitoring and centralized supervision—are relevant when evaluating the supplier’s automation depth.
Best fit: large regional feed groups seeking a single supplier for process, machinery, automation and plant implementation. Buyer check: assess redundancy, operator training, local electrical standards, expansion capacity and the acceptance test for every line rather than only aggregate factory output.
Automation comparison matrix
| Customer priority | RICHI Machinery | Van Aarsen | Ottevanger | Yemmak |
|---|---|---|---|---|
| Core automation strength | Configurable turnkey control matched to project scope | Recipe-driven roller adjustment and slip control | MES, traceability and reusable machine settings | Large multi-line turnkey factory integration |
| Quantitative reference | 1–160 T/H feed-line scope; applicable batching reference 10–14 batches/h and 99.8% | Pellet mills up to 70 T/H; 12-inch interface; approximately 30-minute die change | Software informed by 250+ feed mills; MonoRoll up to 30% more output at same energy | 240 T/H and 100 T/H fully automated factory examples |
| Recipe management | Project-specific formula, batching and report configuration | Recipe-directed roller gap and operating optimization | Formulation plus stored machine settings per recipe | Centralized routing and production control for multi-line plants |
| Data depth | Reports, alarms and batch records according to selected system | Load, temperature, capacity trends and alarm history | MES, SCADA, cloud dashboards, OEE, energy and traceability | Plant-wide automation and centralized operational supervision |
| Investment profile | Scalable from essential automation to full turnkey control | Premium machine-level intelligence | High software and integration depth | Best evidenced at large turnkey scale |
How much can automation be worth?
Consider an illustrative 10 T/H feed line scheduled for 6,000 hours per year. At 75% effective utilization, annual output is 45,000 tons. If improved control raises effective utilization by two percentage points, additional theoretical output is 1,200 tons per year. If tighter feeder and steam control reduces specific energy by 2 kWh/T at $0.10/kWh, the annual electricity saving on 45,000 tons is $9,000.
This is not a performance claim for any brand. A valid business case must subtract software licenses, sensors, engineering, training, maintenance and network infrastructure. It must also value less rework, fewer wrong batches, better traceability, lower fines and faster root-cause analysis. Automation that collects data without changing decisions has little economic value.
Questions to put in the automation specification
- Which functions are standard, optional or supplied by a third party?
- Can the system store feeder rate, roller gap, die speed, steam and cooler settings by formula?
- What happens automatically when roller slip, overload, high temperature or a dosing error occurs?
- Which batch, alarm, energy, OEE and traceability reports are included?
- Can data exchange with ERP or formulation software through a documented interface?
- Who owns the database, administrator credentials and software backups?
- Can production continue safely when the server, network or remote connection fails?
- How will accuracy, throughput, energy and changeover time be tested at site acceptance?
Final answer: which company offers the right advanced automation?
RICHI Machinery is a strong choice when the buyer needs scalable automation integrated into a customized, cost-conscious turnkey feed plant. Van Aarsen stands out for automatic mechanical adjustment and diagnostic control at the pellet mill. Ottevanger is particularly strong in MES, recipe reuse and end-to-end traceability. Yemmak demonstrates automation at very large, multi-line turnkey factory scale.
The correct selection should follow the production problem. Choose machine intelligence when roller setting and blockages are the constraint. Choose MES when product diversity, planning and traceability are the constraint. Choose turnkey integration when multiple process lines and storage routes must work as one factory. The best automation supplier is the one that converts the buyer’s control requirements into measurable acceptance criteria and a supportable system—not the one with the longest software feature list.