MTU 12V4000M*3 series Operating Instructions Manual page 28

To avoid engine damage from a hydraulic lock due to excessive oil supply to the combustion chambers, the
engine must be started at least once a month.
Electronic system
Electronic control and monitoring system with integrated safety and test system with interfaces to Remote
Control System (RCS) and to Monitoring and Control System (MCS).
Engine Interface Module (EIM)
The Engine Interface Module (EIM) is the central connection box on the engine. It covers the complete mini-
mum scope of a marine engine. It does not comprise controls of components requiring maintenance.
Functions:
• Starter control (start repetition, tooth alignment, starter protection)
• Monitoring of the battery-charging generator
• Open bus interface to the plant (SAE J1939)
• Emergency stop function with line break monitoring
• Redundant supply voltage input
• Emergency air-shutoff flap control (option)
• Key switch logic
• Interface to ECU and EMU
• MCS5 dialog interface
• Control of an MTU lube-oil priming pump (power components in separate MTU PPC Box)
• Connection facility for an MTU Local Operating Station (LOS)
Serial RS422 interface for diagnosis
The engine interface comprises two parts. The first part of signals is integrated in the engine wiring harness
with a 62-pole Tyco connector X52. The second part refers to signals associated with higher currents. These
signals are led out via M threaded pins and also integrated in the engine wiring harness.
Functions
• ECU supply
• EMU supply
• Plant signals (ECU7 connector X1)
• Bus interface (2x MCS5 CAN)
• CAN dialog output (1xMCS5 CAN)
• Emergency stop from EMU and ECU
• Electric starter
• Terminal 45 starter A/B (engaged)
• Pneumatic starter
• Starting-air pressure valve
• Start-air pressure sensor
• Barring gear (1 and 2)
• Battery-charging generator (with exciter control)
• Optional emergency-air shutoff flaps
• Activation signal to air shut-off flaps 1+2
• Feedback signal from air shut-off flaps 1+2
Electronic engine governor (ECU)
Functions:
• Engine speed control with fuel and speed limitation dependent on engine status and operating conditions
• Control of sequential turbocharging, cylinder bank cut-out and air recirculation function
• Data processing logistics for analog and binary signals
• Interface for data transfer to CAN field bus for remote control and ship-side monitoring
26 | General Information | MS15036/00E 2018-08