Instruments and Controls
Marine Commercial Control
System (MCC)
Marine Commercial Control (MCC), is a type-approved
control system that monitors your Volvo Penta engine.
MCC comprises an marine control unit (MCU), remote
panel (RP), shutdown unit (SDU) and a relay card.
The MCU is the main system panel and it communi-
cates with all of the engine control units. The slave
panel may be located outside the engine compartment
and handles in exactly the same way as the MCU.
The SDU manages automatic engine shutdown should
the engine show critically low oil pressure (including
reverse gear) or high coolant temperature. It also has
overspeed protection. Electronic systems in the vicinity
of the engine comprise the engine management sys-
tem (EMS) and a power management unit (PM). The
engine management unit manages the injection of fuel
with the aid of a number of sensors. The power man-
agement system manages primary and secondary bat-
tery supply and supplies electrical power to the engine
management unit, MCU and SDU. The unit has over-
current protection with automatic reset.
10 47706582 09-2015 © AB VOLVO PENTA
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