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Valmet M851040 Program and Data Storage Carrier
| Brand: Valmet |
| Item NO: M851040 |
| Effect: MEMU Memory Board / RAM Memory Module |
| Condition: In stock, brand new/Used |
| Warranty: 365 days |
| Payment:T/T 50% deposit, 50% balance |
| www.szcxdcs.com |
+86 15359298293
Valmet M851040 Program and Data Storage Carrier
M851040 (MEMU memory board) is a memory storage board card for the dedicated control system of Valmet VPA paper machines. It is used in conjunction with the M851006 SCU system control unit. As the storage medium for programs and data of the VPA system, M851040 is used to store control programs, paper machine process parameters, formula data, and historical collected data. It cooperates with the SCU main control unit to complete calculations and data reading and writing; it is equipped with a built-in backup lithium battery, which can save key process data when the cabinet loses power to prevent parameter loss. It is only used for replacing faults in old VPA control systems of papermaking.

Product features
- The dedicated MEMU memory board for the VPA system serves as the storage module for the SCU main control unit, storing paper machine control programs, process formulas, and calibration parameters.
- It comes with a 3.6V backup lithium battery, which ensures that the process data in the RAM is not lost even after the system is powered off, preventing the resetting of paper machine parameters.
- The power-on automatic memory self-check can identify memory faults and battery under-voltage, and the fault status is reported to the SCU unit via the backplane bus
- The standard VPA backplane interface is compatible with the M851006 SCU board card, and can be used directly for pairing installation, with plug-and-play functionality.
- The circuit board is coated with three-proof protection layer, which is resistant to moisture, dust, and vibration, and is suitable for the harsh working conditions of the papermaking workshop with high temperature and high humidity.
- Slot-type rack installation, with a quick plug-and-unplug structure, shortens the downtime for on-site maintenance.
- The hardware read-write verification mechanism reduces data read/write errors caused by electromagnetic interference in industrial environments.
Valmet M851040 Program and Data Storage Carrier
Core service capability
- Replacement of discontinued parts: Provide original factory compatible or verified replacement solutions for discontinued or obsolete models to reduce system upgrade and renovation costs
- Quick response supply: sufficient inventory of commonly used spare parts, priority response to urgent inquiries, and shortened downtime
- Full chain quality assurance: strict procurement channel management and quality inspection, traceability of key components
- One stop system matching: covering the integrated procurement needs of system level spare parts from control modules to drive devices
Main product range
| Category | Product Details |
|---|---|
| Control Systems (DCS/PLC/CNC) | Panel Controllers, HMI Interfaces, Industrial PCs, CPU Processor Modules, Communication Modules, Analog/Digital I/O Modules |
| Drives & Motion Control | Variable Frequency Drives, Servo Drives, Servo Motors, Power Supply Modules |
| Robot Spare Parts | Robot Control Boards, Axis Computers, Servo Units, I/O Modules and other critical spare parts |
| Condition Monitoring & Safety Systems | Vibration Monitoring Systems, Safety Instrumented Systems (SIS), Redundant Control Systems |


Valmet M851040 Program and Data Storage Carrier
Main brand
| No. | Brand | Country/Region | Main Product Lines | Typical Series/Models |
|---|---|---|---|---|
| 1 | ABB | Switzerland | PLC/DCS Controllers, I/O Modules, Robot Spare Parts, Drive Systems | AC800M, AC800F, AC31, 800xA, Bailey INFI 90, DSQC, Advant OCS, H&B Freelance |
| 2 | Bently Nevada | USA | Condition Monitoring Systems, Vibration Sensors, Eddy Current Probes | 3500/3300 Monitoring System, Eddy Current Probes, Proximitors |
| 3 | TRICONEX | USA | Safety Instrumented Systems (SIS), TMR Redundant Controllers | Tricon System Modules, Communication Modules, I/O Modules |
| 4 | Woodward | USA | Steam/Gas Turbine Control, Speed Governing Systems, Actuators | 505 Governor, ProTech, MicroNet, NetCon |
| 5 | FOXBORO | USA | DCS Systems, I/A Series Control Modules | I/A Series, FBM Modules, Controllers |
| 6 | WESTINGHOUSE | USA | DCS Systems, Ovation Controllers & Modules | Ovation System, WDPF Series |
| 7 | Motorola | USA | Industrial Communication Modules, Embedded Control Modules | MVME Series, VME Bus Modules |
| 8 | GE / GE Fanuc | USA | PLC, Excitation System Modules, CPU/Communication/Analog Modules | IS200/DS200, IC693/IC695/IC697/IC698/IC200/IC660/IC670 |
| 9 | YOKOGAWA | Japan | DCS Systems, CPU Modules, I/O Cards | CENTUM CS3000, CS1000, VP Series |
| 10 | HIMA | Germany | Safety Control Systems, SIL Safety Modules | H41q/H51q, HIMax, HIMatrix |
| 11 | EMERSON | USA | DCS Systems, Redundant Controllers, Safety Systems | Ovation, DeltaV Dual-Channel Redundant Safety Systems |
| 12 | Honeywell | USA | DCS Systems, Process Control Modules | Experion PKS/LS/HS, Plant Scape, TDC2000/3000, TPS, Alcont |
| 13 | ICS TRIPLEX | UK | Trusted Safety Control Systems, TMR Modules | Trusted System, T8000 Series |
| 14 | Kollmorgen | USA | Servo Drives, Servo Motors, Motion Control | S700, S300, AKD Series |
| 15 | PROSOFT | USA | Industrial Communication Modules, Protocol Gateways | MVI69, MVI56, MVI94, MVI71, MVI46, PS69, 3150 |
| 16 | Alstom | France | Power Control, Protection Relays, Control Systems | GEC ALSTHOM, Protection and Control Modules |
| 17 | EATON | USA | Electrical Control, PLC, Power Supplies, Circuit Breakers | XC/XN Series PLC, Moeller Series, Power Supply Modules |
| 18 | Allen-Bradley (Rockwell) | USA | PLC Controllers, I/O Modules, Communication Modules | ControlLogix 1756, CompactLogix 1769, SLC 500 1747/1746, PLC-5 1771/1785 |
| 19 | Schneider | France | PLC, Modicon Series, CPU/Communication Modules | Quantum 140, Modicon M340, Modicon Premium |
————————Shenzhen Changxin Automation Equipment Co Ltd -————————
Products that have been released are welcome for consultation. Due to the wide variety of models, we were unable to upload physical images one by one!
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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 |








