Valmet M851006 M2 SCU System Control Unit Module
M851006 is the M2 SCU system control unit module of Valmet VPA system, which belongs to the core board of VPA paper machine process analysis and control subsystem. M851006 is responsible for collecting data from various paper machine sensors, executing local process control logic, completing bus communication between modules, and exchanging data with the upper level DCS system to achieve paper machine process parameter monitoring, actuator control, and fault diagnosis reporting.
Parameter Specifications
| Item | Specifications |
|---|---|
| Product Type | M2 SCU System Control Unit Module |
| Part Number | M851006 |
| Applicable System | Valmet VPA System |
| Processor | 16-bit industrial MCU |
| Onboard RAM | 512KB |
| Onboard Flash Memory | 2MB |
| System Bus | VPA internal backplane bus |
| Communication Interface | RS485, proprietary VPA field bus |
| Power Supply | 24VDC |
| Power Consumption | Max 6W |
| Input Current | Max 250mA |
| Isolation Voltage | 1000V DC between bus and field side |
| Operating Temperature | -10℃ ~ +60℃ |
| Storage Temperature | -30℃ ~ +85℃ |
| Relative Humidity | 5%~95% RH, non-condensing |
| Mounting Mode | Rack slot mounting |
| Protection Class | IP20 |
| EMC Standard | CE Class B |
| Supported Sensors | Paper machine sensors, position transmitters |
| Diagnostic Function | Power, communication, hardware self-test |
| Dimension | Standard VPA module form factor |
| Origin | Finland |
Valmet M851006 M2 SCU System Control Unit Module
Brand Introduction：
Valmet is headquartered in Finland and its automation business was formerly under Metso. In 2013, Metso’s automation business was merged into Valmet and it is a leading supplier of process industrial equipment and automation solutions for the global pulp and paper, energy, biomass, mining, and building materials industries. Its main products include complete production lines, DCS automation systems, field instruments, valves, analytical instruments, and full lifecycle spare parts and maintenance services.
Core automation products:
Valmet DNA Distributed Control System (DCS) is the main process control system of Valmet, including the old IOP series I/O and the new generation ACN series I/O hardware (D201435L CXW controller D201134L AI8C、D201136L DI16C、D201126L DI8P、D201129L DO8P、D201436L DO16C Etc.)
- Hardware: ACN rack, redundant controller module, analog input/output, digital input/output I/O card, bus communication module; Support module hot plugging, channel level fault diagnosis, wide temperature industrial working conditions, support 1:1 controller redundancy, ensuring uninterrupted continuous production.
- Software: Process control software, human-machine interface HMI, historical trends, alarm management, advanced process control APC, equipment status monitoring, asset operation and maintenance management software.
- New generation platform: DNAe , web architecture DCS, strengthened network security, suitable for key process devices such as power plants and ships.
Product features
- Designed specifically for the Valmet VPA paper machine dedicated control system, serving as an SCU control unit responsible for local process logic operations and on-site data acquisition.
- Equipped with industrial grade MCU, built-in flash memory and memory, it can independently run local control programs without relying on the upper computer to complete basic process monitoring.
- Integrate VPA backplane bus and RS485 communication interface to achieve data exchange between modules in the same rack and interface with upper level DCS system.
- Onboard hardware self diagnostic function, real-time monitoring of power supply, communication link, chip status, and uploading fault information to the system alarm.
- Backboard electrical isolation design, isolates on-site interference, protects core circuits, and improves the stability of paper machine operation in humid and dusty environments.
- Rack slot installation, supporting quick insertion and removal, convenient for on-site shutdown maintenance and replacement.
- The circuit board is equipped with a three proof coating, which is resistant to moisture, dust, and vibration, and is suitable for harsh working conditions in paper workshops.
- Modular architecture, compatible with VPA series I/O and measurement modules, allowing for flexible expansion of measurement points.
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