MAN B&W 3171197‑4

• Operating Ambient Temperature: ‑10 °C … +55 °C
• Storage Temperature: ‑25 °C … +70 °C
• Vibration Resistance: Complies with IEC 60068‑2‑6 marine‑vibration test standard
• Protection Rating: Front‑panel IP54 when panel‑mounted; rear‑side electronics IP20
• Weight: 3.74 kg total unit weight
• Communication Interface: Multi‑channel serial marine‑engine‑system internal bus connection
• Display Device: Digital numeric LED‑segment display for engine‑parameter read‑out
• Operator Controls: Tactile membrane push‑buttons, selector rotary switch, emergency‑stop push‑button

Functional Features

• Real‑time visual display of engine‑speed, cylinder‑pressure, exhaust‑gas‑temperature, lubricating‑oil‑pressure‑and‑temperature, cooling‑water‑temperature and fuel‑system parameters
• Local operator command input for engine start‑stop, mode‑selection, parameter‑configuration and alarm‑acknowledge operations
• Multi‑channel visual alarm‑LED indication for engine‑fault‑and‑abnormal‑condition events
• Data exchange with main‑engine ECU and ship‑automation monitoring systems
• Alarm‑latch function for fault‑event storage for post‑fault troubleshooting review
• Marine‑hardened anti‑vibration and anti‑humidity electronic‑circuit design

Application Scenarios

• Bridge‑and‑engine‑room local control stations aboard ocean‑going cargo vessels equipped with MAN B&W two‑stroke main propulsion diesel engines
• Marine‑engine‑system retrofits, spare‑panel replacement for existing ship‑board installations
• On‑board engine‑commissioning, troubleshooting and routine‑monitoring operator interface

Performance Parameters

• Continuous stable operation under marine high‑humidity and salt‑spray ambient conditions
• Fault‑alarm‑response latency less than 200 ms for critical‑engine‑safety signals
• Data‑update refresh‑rate for main‑engine operating‑parameters at 1 Hz

Material Composition

• Front‑panel housing: Painted marine‑grade steel sheet‑metal assembly
• Membrane keypad: Polyester‑membrane switch with abrasion‑resistant printed‑overlay
• Internal control‑circuitry: FR‑4 marine‑qualified multilayer printed‑circuit board; industrial‑grade integrated circuits and passive components; aluminium heat‑spreader mounting plate for main‑processor board
• Hardware fasteners: Anti‑corrosion plated steel screws

Structural Characteristics

• Panel‑mount cut‑out form‑factor for installation inside engine‑room console cabinet
• Front‑side human‑interaction area containing display, push‑buttons, rotary‑selector‑switch and emergency‑stop device
• Rear‑compartment houses main electronic‑circuit‑board assembly, wiring terminal blocks and bus‑interface connectors
• Mechanical shock‑absorbing mounting features for mitigating ship‑hull‑transmitted vibration

Working Principle Unit receives real‑time engine‑measurement‑data via internal‑system serial bus from main‑engine control‑unit; microprocessor logic processes measurement values, drives LED numeric‑display and alarm‑indicator lamps; operator‑key inputs are encoded and transmitted back over communication bus towards engine‑control‑unit to execute operator‑initiated engine‑control commands.

Installation Requirements

• Panel‑mount into rigid marine‑engine‑room console structure, ensure proper gasket sealing to maintain front‑panel IP54 rating
• Connect 24 VDC power supply and system‑communication bus using marine‑approved shielded‑cable assemblies
• Rear‑electronics compartment must maintain adequate ventilation, avoid condensation accumulation
• Mechanical mounting hardware must resist ship‑board continuous‑vibration excitation

Usage Notes

• Avoid direct salt‑water splash exposure on rear‑electronics compartment
• Disconnect 24 VDC supply before opening rear‑enclosure cover for service work
• Periodically inspect membrane‑keypad overlay for abrasion‑damage; damaged overlay can permit moisture ingress into electronics
• All system‑parameter modification operations must comply with MAN B&W engine‑system‑operation manuals