Description
Product Introduction & Engineering Value
When an electronic marine engine control system begins producing intermittent alarms, the processor module is often one of the first components inspected. The MAN A201SR04 / 5880-0009B serves as a processor control board responsible for executing control logic and coordinating communication within compatible MAN engine management systems.
Designed for continuous operation in demanding marine environments, this module is installed in engine control cabinets where vibration, temperature variation, and electrical noise are expected. Replacing a failed processor board with the correct hardware revision helps restore control functionality while avoiding unnecessary changes to the existing automation architecture.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | MAN Diesel & Turbo / MAN B&W |
| Model | A201SR04 |
| Alternate Part Number | 5880-0009B |
| Product Type | Processor Control Module |
| Construction | Multilayer Printed Circuit Board |
| Typical Supply Voltage | 24 VDC* |
| Installation | Marine Engine Control Cabinet |
| Primary Function | Processor-Based Engine Control |
| Application | Marine Diesel Engine Automation |
| Cooling | Passive Convection |
| Environment | Shipboard Machinery Spaces |
| Service Type | Replacement Electronic Control Module |
*Control voltage should always be confirmed against the vessel’s electrical drawings and MAN service documentation. Some publicly listed specifications are reseller-provided rather than official manufacturer data.
Field Application & The “Trench” Experience
During sea trials following scheduled maintenance, a bulk carrier experienced sporadic communication faults between the engine control cabinet and several field devices. Sensor calibration and wiring inspections found no abnormalities, yet processor diagnostics continued reporting internal communication errors.
Engineers isolated the issue to the A201SR04 / 5880-0009B processor module. After installing a verified replacement and confirming configuration parameters, the control network stabilized and engine operation returned to normal without requiring software redevelopment or cabinet rewiring.
Typical applications include:
- MAN electronically controlled two-stroke propulsion engines
- Marine auxiliary diesel generator control systems
- Shipboard engine monitoring and automation cabinets

A201SR04 5880-0009B

A201SR04 5880-0009B
Transparency SOP: QA & Testing
Every processor module is evaluated before shipment using documented inspection procedures.
- Verify the complete part number (A201SR04 / 5880-0009B) and hardware markings.
- Inspect PCB surfaces for corrosion, damaged traces, or unauthorized repairs.
- Check edge connectors and component solder joints.
- Perform power-on verification using compatible marine control equipment when available.
- Verify processor initialization and communication functions.
- Package the module in anti-static materials with reinforced shipping protection.
Both New Surplus and professionally refurbished inventory should undergo inspection and functional verification before delivery.
The Veteran’s Tech Trap Guide
⚠️ Don’t Order by the Base Number Alone
Always match both A201SR04 and 5880-0009B. MAN marine control systems frequently use multiple PCB revisions that are not guaranteed to be interchangeable.
⚠️ Verify the Root Cause First
Processor communication alarms are often caused by unstable 24 VDC control power, connector oxidation, or network wiring issues rather than a defective PCB.
PRO TIP:
Before removing the existing module, record all diagnostic codes and save controller configuration data whenever possible. This can significantly reduce recommissioning time after installation.
Dynamic FAQ
Q1. What is the function of the MAN A201SR04 / 5880-0009B?
It is a processor control module used within compatible MAN marine engine electronic control systems to execute control functions and manage communication between system components.
Q2. Is the 5880-0009B number interchangeable with ?
The two numbers identify the same assembly in many supplier references, but the complete identification label, hardware revision, and application should always be verified before ordering.
Q3. Can this module be installed without software changes?
If the replacement has the correct hardware revision and firmware compatibility, it is typically installed as a direct replacement. Configuration verification should still be completed during commissioning.
Q4. Is this module available as New Surplus?
Yes. Depending on supplier inventory, the module is commonly available as New Surplus or professionally refurbished stock. Functional testing is recommended before shipment.
Q5. What should be checked before replacing the board?
Inspect the control power supply, cabinet backplane, communication wiring, connector condition, and diagnostic logs. Many apparent PCB failures originate from external electrical issues rather than the processor module itself.
Q6. Is warranty coverage available?
Most industrial and marine automation suppliers provide warranty coverage for both New Surplus and refurbished / 5880-0009B modules. Warranty duration depends on the product condition and supplier policy.




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