Mdec Governor Assignment - MTU 12 V 2000 P12 Operating Instructions Manual

8.1.2 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
Outputs
Observe max. output current-carrying capacity.
TAA1 Emergency stop
TAA2 Automatic engine stop
2 ) MDEC connector X5 (15 m and 25 m available as an option).
MS150025/02E 2012-10 | Engine Governor Assignment and Circuitry | 165
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 shut‐
down messages such as "Lube oil pressure too
low". The corresponding outputs such as Com‐
bined 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.
Transistor output for emergency stop.
Transistor output for automatic engine stop.