WhatsApp: +86 16626708626
Email: 
Phone: +86 16626708626Description
3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | CPU / Central Processor Module |
| Compatible System | Metso Damatic XDi / Metso DNA DCS |
| Primary Function | Application execution, I/O scanning, diagnostics |
| Communication | Proprietary backplane + serial data highway (X-bus or equivalent) |
| Power Supply | 24 V DC (typical for series) |
| Operating Temperature | −20 °C to +60 °C (typical industrial rating) |
| Form Factor | Plug-in PCB for Processing Unit rack |
| Memory | Volatile RAM + non-volatile storage for firmware/application |
| Protocols Supported | System-native; external via compatible modules (Modbus, Profibus, Ethernet in related units) |
| Mounting | Dedicated CPU slot in XDi / DNA rack |
| Condition Notes | Legacy hardware; firmware revision must match existing system |
Exact firmware version, memory size, and current draw vary by hardware revision. Always verify against the OEM datasheet and your existing rack configuration before installation.
4. Product Introduction
The Valmet A413000 is a central processing unit module used in Metso Damatic XDi and related Metso DNA distributed control systems. It functions as the primary computational engine of a Processing Unit rack, executing control logic, scanning I/O, solving PID and sequential functions, and managing communication with operator stations and peer controllers.
This board is a direct hardware replacement for failed or aging CPUs in pulp & paper, mining, power, and process plants still running Damatic XDi or early DNA architectures. Because these systems remain in service worldwide, genuine surplus units with verified functionality continue to be the practical solution for minimizing downtime.
A413000
A413000
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No LEDs or no power-up | Rack power supply or backplane fault | Medium | Measure 24 V DC at rack supply and CPU slot pins | Check PSU and fuses before replacing CPU |
| CPU fails to boot / continuous fault LED | Firmware mismatch or hardware failure | High | Compare firmware revision on label with system requirements; reseat board | Replace with matching revision unit |
| Loss of communication with I/O or operator stations | Network or X-bus issue | Medium | Check network cabling, terminators, and peer status | Isolate whether problem is local to this CPU |
| Application not running / outputs freeze | Corrupted application or memory fault | High | Attempt download of known-good application; monitor diagnostic buffer | Usually requires hardware replacement if download fails |
| Intermittent resets under load | Overheating or power instability | Medium | Monitor rack temperature and supply voltage under load | Improve cooling; verify power quality |
| Module not recognized by engineering tool | Wrong revision or damaged connector | High | Confirm part number and revision; inspect edge connector | Match exact hardware revision; clean contacts |
If diagnostics remain inconclusive, provide photos of the board labels, rack configuration, and any diagnostic logs to technical support.
6. Frequently Asked Questions (FAQ)
Q: Is the Valmet A413000 still available as new from the factory?
A: No. This is a legacy Damatic XDi / early DNA part. Current stock is new surplus or carefully tested used units. Availability is limited and subject to remaining inventory.
Q: Will any A41300x CPU work as a drop-in replacement?
A: Not always. Hardware and firmware revisions must be compatible with your existing system and application. Always note the full part number and revision (e.g., A413000, A413003, A413082) from the failed board and match it as closely as possible.
Q: Do I need to reload the application program after installing a new CPU?
A: Yes in most cases. The control application resides in the CPU. Have a verified backup ready and plan for a controlled download using the appropriate Metso/Valmet engineering tool.
Q: What is the difference between New Surplus and Refurbished units?
A: New Surplus units are unused or factory-overstock boards that have never been installed in a plant. Refurbished units have been previously installed, cleaned, functionally tested on a compatible rack, and verified for proper boot and communication. Both carry functional testing documentation.
Q: Can I hot-swap the A413000?
A: No. Power down the Processing Unit rack before removing or inserting the CPU. Hot-swapping risks damage to the backplane or the module itself.
Q: How do you test these modules before shipment?
A: Each unit undergoes visual inspection for corrosion or rework, power-on self-test on a compatible Damatic/Metso rack, communication handshake verification, and basic functional checks. Test photos and a report are available on request.
Q: What should I check before ordering?
A: Confirm the exact part number and revision on your existing CPU, the system type (Damatic XDi or DNA), and whether you have a current application backup. Firmware mismatch is the most common cause of post-installation problems.
