Mdec Governor Assignment - MTU Detroit Diesel 12 V 2000 P62 Technical Publication

Engine Governor Assignment and Circuitry
7.1.2

MDEC governor assignment

Scope of delivery
Included in the scope of delivery are:
• SAM
• W004 MDEC connector X1 10 m long (15 m and 25 m available as an option).
• W003 (4x2.5 mm
The MDEC governor is protected by a 20 A automatic cutout via cable W003 connector X5.
The PIM modules are wired to a separate 10 A fuse (see MTU wiring diagram).
All control, display and communication signals are in interface cable W004 MDEC connector X1.
CAN 1 is transmitted to the PIM module(s) via conductors 48, 49, 50 and CAN 2 via conductors 51, 52, 53.
A 121 ohm CAN bus terminal resistor must be installed for CAN 1 and CAN 2 respectively at the last PIM module.
Terminal resistors for the MDEC governor are already fitted in cable W004 connector X1.
Digital MDEC inputs/outputs
Inputs
Observe input polarity.
BE1 Stop input
BE2 Cylinder cutout
BE3 SISY override
BE4 Fixed speed
BE5 Speed up
BE6 Speed down
BE7 Speed droop 2 / desired speed setting
BE8
BE9
MS15009/00E 06-09
2
) MDEC connector X5 (15 m and 25 m available as an option).
This input is inverted (
line-break protected), i e 24 V DC must always be
applied to BE1 for engine operation.
The cylinder cutout function is deactivated via this input.
Activating BE8 suppresses all VDS operation shutdown
messages such as "Lube oil pressure too low". The
corresponding outputs such as Combined alarm red
are still set.
The fixed speed function is activated via this input.
Binary input for speed up.
Binary input for speed down.
Speed droop can be switched via this input with the
engine running/at a standstill.
Default speed droop setting in the governor:
• 1 = 4%
• 2 = 0%
Not used.
Not used.
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