MTU 20V4000M73 series Operating Instructions Manual page 37

Connection box EIM (Engine Interface Module)
The Engine Interface Module (EIM) is the central connection box on the engine. It covers the entire minimum
scope of a marine engine series. It has no controls or parts requiring maintenance.
Functions:
• Start control (start repetition tooth-on-tooth, starter protection)
• Battery-charging generator monitoring
• Open bus interface to the plant (SAE J1939)
• Emergency stop function with wire break monitoring
• Redundant power supply
• Optional control of emergency air-shutoff flaps
• 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 is divided into two parts. The first part is integrated via a Tyco connector X52, 62-pin, in
the engine wiring harness. The second part comprises the signals at which a higher current flows. These sig-
nals are guided out via M-threaded pins and are 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 ECU and EMU
• Electric starter
• Terminal 45 starter A/B (engaged)
• Pneumatic starter
• Starting air pressure valve
• Start-air pressure sensor
• Barring device (barring gear 1 and 2)
• Battery-charging generator (with excitation control)
• Emergency-air shutoff flaps option
• Control signals to SDAF 1+2
• Feedback signals from SDAF 1+2
Electronic Engine Control Unit (ECU)
Functions:
• Engine speed control with fuel and speed limitation according to 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
• RS 232 interface for connection of MTU dialog unit
Electronic Engine Monitoring Unit (EMU), optional
Functions:
• Data processing logistics for analog and binary signals
• Interface for data transfer to CAN field bus for remote control and ship-side monitoring
Electronic Gear Control Unit (GCU), ship-side wall-mounting
Functions:
• Date processing logistics for gear coupling control
• Input/output signals as well as data transfer to CAN field bus for remote control and ship-side monitoring
MS150046/03E 2018-08 | General Information | 35