MAN Diesel & Turbo DAU-11 Data Acquisition Unit 1882350-0

MAN Diesel & Turbo DAU-11 Data Acquisition Unit 1882350-0 with ID Key 1142738-0

The MAN Diesel & Turbo DAU-11 (MPN: 1882350-0) paired with the Electronic Identification Key Module (MPN: 1142738-0) is an FPGA-based data acquisition computer engineered for online cylinder combustion pressure monitoring on MAN B&W two-stroke marine diesel engines. Installed inside the engine room control cabinet, the unit samples real-time analog signals from fixed cylinder pressure sensors alongside crankshaft angle encoder pulses.

The bundled 1142738-0 ID Key plugs directly into the multi-pin D-sub interface to store engine-specific hardware configuration, node identification, and calibration parameters, enabling rapid plug-and-play module replacement without manual software re-addressing.

Model Details

• Primary Unit Designation: PMI-DAU 11 / DAU-11 (Data Acquisition Unit)
• Primary Manufacturer Part Number (MPN): 1882350-0
• Companion Module Designation: Electronic Identification Key (ID Key)
• Companion Module MPN: 1142738-0 (Hardware Revisions 1.5 / 1.7)
• System Architecture: MAN B&W Online PMI (Performance Measuring Instrument) & CoCoS-EDS

Features

1. FPGA-Based High-Speed Signal Processing: Dedicated Field-Programmable Gate Array (FPGA) hardware executes deterministic, real-time sampling of high-frequency combustion pressure waveforms across all engine cylinders simultaneously.
2. Hardware-Bound Configuration via ID Key 1142738-0: Includes the metal-housed D-sub ID Key module (Revisions 1.5 / 1.7) that retains node identity, subnet/IP allocation, and engine parameters across unit swaps.
3. Multi-Channel Sensor & Crank-Angle Synchronization: Synchronizes analog transducer inputs from fixed cylinder head pressure sensors with crankshaft angle encoder signals for crank-angle-resolved pressure-volume analysis.
4. Marine Engine-Room Rated Construction: Built for continuous operation inside vessel engine-room automation enclosures, resisting high ambient temperatures, continuous hull vibration, and electromagnetic interference.

Technical Details

Compatibility

• Compatible Engine Series: MAN B&W Two-Stroke Low-Speed Marine Diesel Engines equipped with Online PMI / PMI Auto-tuning systems (including MC-C, ME, ME-C, and ME-B series).
• Compatible Control & Monitoring Platforms:
  • MAN Engine Control System (ECS) & Engine Monitoring System Main Operating Panel (EMS MOP)
  • MAN CoCoS-EDS (Computer Controlled Surveillance – Engine Diagnostics System)
  • MAN Multi-Purpose Controller (MPC) architecture (via ID Key 1142738-0)

Part Number Cross-References

• 1882350-0: PMI-DAU 11 (Standard legacy/current hardware assembly supported across PMI 1101 through PMI 1910)
• 1883855-1: PMI-DAU 12 (Successor hardware generation introduced with PMI 1703-1.1 and supported in PMI 1910)
• 1884513-0: PMI-DAU variant supported in PMI 1910 (Versions 1–5+)
• 1142738-0: Electronic ID Key Module (Revisions 1.5 and 1.7)

Applications

• Continuous online combustion pressure monitoring on ocean-going merchant vessels (container ships, VLCCs, bulk carriers, LNG carriers).
• Closed-loop PMI Auto-tuning for automatic fuel injection timing and exhaust valve balance adjustments on MAN B&W ME/ME-C engines.
• Real-time engine thermodynamic diagnostics and cylinder wear trend logging within CoCoS-EDS.
• Stationary two-stroke diesel power plant engine monitoring and testbed performance validation.

Frequently Asked Questions

What is the function of the MAN Diesel & Turbo DAU-11 (1882350-0)?

The DAU-11 (1882350-0) is an FPGA-based Data Acquisition Unit used on MAN B&W two-stroke marine diesel engines. It collects real-time analog signals from fixed cylinder pressure sensors and crankshaft angle encoders, calculates combustion metrics and sends the data over Ethernet to the EMS MOP for PMI Auto-tuning and CoCoS-EDS engine diagnostics.

Why does the DAU-11 require the 1142738-0 ID Key module?

The 1142738-0 ID Key is an electronic identification module that attaches to the DAU-11’s D-sub connector. It retains the unit’s hardware node identity, IP/subnet network configuration, and engine-specific calibration parameters, allowing engineers to swap out a failed DAU-11 without manually reconfiguring network addresses on the EMS MOP.

Is part number 1882350-0 compatible with newer PMI software versions?

Yes. The PMI-DAU 11 (MPN: 1882350-0) is supported across legacy and modern MAN PMI software releases, including PMI 1101, 1202, 1205, 1703, and PMI 1910 (Versions 1 through 7.1).

Can the DAU-11 (1882350-0) be replaced with a PMI-DAU 12 (1883855-1)?

While the PMI-DAU 12 (1883855-1) is the successor hardware platform supported in PMI 1703-1.1 and PMI 1910, replacing a DAU-11 with a DAU-12 requires verifying shipboard PMI software version compatibility and wiring harness pinouts. Using a direct replacement DAU-11 (1882350-0) ensures identical mechanical, electrical, and firmware drop-in compatibility.

What precautions are required when installing the 1142738-0 ID Key?

The 1142738-0 ID Key is an Electrostatic Sensitive Device (ESD). Always wear a grounded anti-static wrist strap, ensure the DAU-11 power supply is completely isolated before connecting or disconnecting the ID Key, and secure both integrated locking screws on the D-sub housing to prevent vibration-induced intermittent contact.