MAN Marine Diesel MMDS-CLC 6.3 Monitor Screen

Product Parameters

• Model Number: 51.27721-7043 (MMDS-CLC 6.3)
• Manufacturer: MAN Truck & Bus / MAN Marine
• Series: Marine Monitoring and Diagnostic System (MMDS)
• Display Type: Color LCD with LED Backlight
• Screen Size: 6.3-inch
• Operating Voltage: 24 Vdc (Nominal)
• Interface: CAN Bus (MAN-bus), RS-485, Analog inputs
• Housing Material: Rugged Marine-grade Plastic/Aluminum

Product Description The MMDS-CLC 6.3 (51.27721-7043) is an advanced engine monitoring and diagnostic display unit designed specifically for MAN marine diesel engines. As a central interface for the operator, it provides real-time visualization of critical engine performance data, including RPM, oil pressure, coolant temperature, fuel consumption, and battery voltage. The unit features high-contrast graphics that remain legible under direct sunlight, a prerequisite for flybridge installations. Beyond simple monitoring, the CLC 6.3 acts as a diagnostic hub, displaying active fault codes and maintenance reminders directly from the engine’s electronic control units (ECUs).

Product Applications This monitor is a standard component on a wide range of MAN marine propulsion systems used in luxury yachts, commercial fishing vessels, and high-speed patrol boats. It is typically installed in the main bridge console or at the secondary steering station. The MMDS system allows for the synchronized monitoring of twin-engine setups, providing the captain with a consolidated view of both port and starboard engine health to ensure safe and efficient vessel operation.

Product Specifications

• Weight: 1.25 kg
• Dimensions: 15.0 cm x 17.5 cm x 8.5 cm
• Country of Origin: Germany
• Protection Rating: IP66 (Front panel) / IP65 (Rear)
• Storage Temperature: -30°C to +85°C

Operational Precautions

• Power Cycling: Avoid frequent “hard” power-offs by cutting the main battery switch while the engine is running; always use the ignition key or system standby button to ensure the monitor saves its configuration and event logs.
• Sunlight Exposure: While designed for marine use, prolonged exposure to extreme UV rays can eventually degrade the anti-glare coating. Use the provided protective cover when the vessel is not in use.
• Firmware Updates: Ensure the firmware version of the display is compatible with the engine’s EDC (Electronic Diesel Control) software version to prevent data communication lag or incorrect fault code descriptions.
• Cleaning Protocol: Do not use high-pressure water or harsh chemical cleaners on the screen. A soft microfiber cloth dampened with fresh water is recommended to remove salt residue.

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