Valmet M8512271 Binary I/O Interface Module
M8512271 is a binary I/O interface module for Valmet paper machine dedicated control system, used in conjunction with M851006 SCU main control unit. M8512271 is responsible for collecting on-site digital switch signals and outputting relay switch signals, completing signal acquisition and driving of paper machine on-site limit, alarm, solenoid valve, indicator light and other equipment; Through VPA backplane bus and SCU main control, data exchange is carried out, device status is uploaded, control instructions issued by the main control are received, and channel fault diagnosis is also available. Specially used for replacing faulty boards in the VPA subsystem of old paper production lines.
Parameter Specifications
| Item | Specifications |
|---|---|
| Product Type | MEMU Memory Board / RAM Memory Module |
| Part Number | M851040, 547006-3A, 547006-3B |
| Applicable System | Valmet VPA Paper Machine Control System |
| Compatible Unit | M851006 SCU control unit |
| Memory Type | RAM + EPROM |
| Backup Battery | 3.6V lithium battery for data retention |
| System Bus | VPA backplane bus |
| Power Supply | 5VDC from rack backplane |
| Max Power Consumption | 4.2W |
| Working Current | Max 210mA |
| Data Retention Time | Up to 5 years with good backup battery |
| Diagnostic Function | Memory self-test, battery low voltage detection |
| Operating Temperature | -10℃ ~ +60℃ |
| Storage Temperature | -30℃ ~ +85℃ |
| Relative Humidity | 5%~95% RH, non-condensing |
| Mounting Mode | Rack slot mounting |
| Protection Class | IP20 |
| EMC Compliance | CE Class B |
| PCB Coating | Conformal coating |
| Net Weight | 310g |
| Dimension | Standard VPA module form factor |
| Origin | Finland |
Valmet M851040 MEMU memory board
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
- 16 mixed digital channels, integrating digital input and relay dry contact output, with one module simultaneously completing on-site switch acquisition and device driving.
- Relay dry contact output, strong and weak electrical isolation, can directly drive solenoid valves, on-site sound and light alarms, contactor circuits, and adapt to AC/DC loads.
- Electrical isolation is established between the on-site circuit and the system backplane to suppress static electricity in the paper machine workshop and electromagnetic interference caused by motor start stop, and to protect the SCU main control board.
- Built in channel level hardware self diagnosis can detect channel disconnections, module power supply abnormalities, relay faults, and upload fault information to the SCU unit.
- The panel is equipped with LED status indicator lights, which respectively indicate module operation, bus communication, input/output status of each channel, and fault alarms, making on-site troubleshooting intuitive.
- Standard VPA rack slot installation, supporting quick insertion and removal, reducing downtime for paper machine maintenance.
- The circuit board is equipped with a three proof protective coating, which is resistant to moisture, fiber dust, and vibration, and is suitable for harsh working conditions in the papermaking and pressing sections.
- Native VPA backplane bus, directly paired with M851006 SCU controller, modular combination, flexible expansion of switch measurement points.
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