Description
MAN B&W 3171197-4 – Control Module for Marine Engine Automation and Safety Systems
The MAN B&W 3171197-4 is a factory-grade control module designed for MAN B&W marine engine cabinets. It typically functions as an I/O and logic interface inside the engine’s automation/safety rack—handling signals from sensors and field devices and relaying commands back to actuators. From my experience, this module is used in low-speed/medium-speed engine applications where stable 24 VDC control, reliable isolation, and marine EMC resilience matter. One thing I appreciate is how it is built for form-fit-function replacement, which lowers downtime during maintenance at sea.
Company’s Order Placement Process and Guarantees
- Warranty period: 365 days
- Delivery time: 1 week for in-stock; no more than one month at the latest
- Payment method: 50% advance payment, full payment for delivery
- Express delivery options: FedEx, UPS, DHL
Each unit is electrically inspected before dispatch. You’ll receive photos and test notes prior to shipment, which in many cases helps the onboard team prepare wiring and minimize installation time.
Key Features
- Form-fit-function replacement – Designed to slot into MAN B&W engine control racks with matching connectors and mounting points.
- 24 VDC marine control – Accepts standard shipboard 24 VDC supplies for dependable operation across typical vessel environments.
- Isolated I/O channels – Opto-isolation helps protect upstream electronics from transients and ground loops commonly seen in engine rooms.
- Signal flexibility – Supports discrete 24 VDC inputs/outputs and 4–20 mA analog signals used for pressure, temperature, and flow feedback.
- Conformal-coated PCB – Moisture and salt-mist resistance for improved reliability in marine atmospheres.
- Service-friendly design – Front-access connectors and status LEDs (on most revisions) assist with quick diagnostics and swap-outs.
Technical Specifications
| Brand / Model | MAN B&W 3171197-4 |
| HS Code (customs reference) | 840999 (Parts for compression-ignition internal combustion engines) |
| Power Requirements | 24 VDC nominal (typ. 18–32 VDC), power draw < 10 W in most cases |
| Dimensions & Weight | Plug-in rack module; approx. 233 × 160 mm PCB format; ~0.4 kg (varies by revision) |
| Operating Temperature | 0 to +55 °C typical for marine cabinet electronics |
| Signal Input/Output Types | 24 VDC digital inputs/outputs; 4–20 mA analog inputs (typical) |
| Communication Interfaces | Proprietary rack/backplane bus; some revisions include serial diagnostics (e.g., RS-485) |
| Installation Method | Cabinet-mounted, plug-in card; secured via edge guides and front fasteners |
Application Fields
You might notice this module across MAN B&W engine control cabinets where robust I/O handling is needed. Typical scenarios include:
- Main engine automation on ocean-going vessels (propulsion monitoring, interlocks, alarms)
- Fuel and cylinder lubrication control blocks on two-stroke and four-stroke platforms
- Auxiliary generator sets and engine-driven pumps where common 24 VDC marine control is used
- Shore-side test benches and engine simulators for maintenance and training
Feedback we hear from chiefs and ETOs is consistent: the plug-and-play fit saves hours during port stays, especially when a quick swap gets the engine back to “ready” status.
Advantages & Value
- Reliability at sea – Marine-grade design with isolation and coating to handle humidity, vibration, and electrical noise.
- Compatibility – Intended for MAN B&W racks; minimizes engineering changes and leverages existing wiring looms.
- Reduced downtime – Swap-in replacement; we can pre-check I/O and supply connector photos so crews can prepare tools and labels.
- Procurement confidence – 365-day warranty, traceable test reports, and clear logistics timelines.
- Lifecycle support – Guidance on equivalent revisions and compatible modules if your cabinet has mixed generations.
Installation & Maintenance
- Environment – Install in a sealed engine-room cabinet meeting marine standards; allow ventilation; avoid condensation.
- Power & wiring – Use a stable 24 VDC supply; observe polarity; route analog and digital lines separately where possible to reduce noise.
- ESD care – Handle with ESD protection; isolate cabinet power before insertion/removal; verify backplane connectors are clean.
- Commissioning – After installation, verify I/O channel mapping, alarm status, and any interlock logic; run a controlled function test.
- Routine maintenance – Inspect connectors quarterly, clean dust with dry air, and check mounting tightness. Firmware updates may apply only to specific revisions; confirm before attempting any update.
Quality & Certifications
- Manufactured to MAN B&W standards for marine engine control systems
- Typically built to meet marine EMC and environmental norms (e.g., IEC/EN practices used for bridge/cabinet electronics)
- CE marking where applicable; system-level approvals (DNV, ABS, LR) usually apply to the complete control cabinet
- Warranty: 365 days from delivery
If you’re matching an existing cabinet, share the rack photo and your current module label (including revision). We’ll confirm fit and advise on compatible alternatives if your system mixes older and newer board generations.
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