MTU 12 V 2000 P12 Operating Instructions Manual page 24

Grounding
1 PIM
2 SAM
3 Engine governor
4 Battery
5 To engine sensors
Grounding
Both the engine and the generator are connected to ground (8) via equipotential bonding strips (7, 9, 10)
on the mounting frame (11).
EMC
EMC design of the overall system is based on a two-pole ungrounded power supply. This is particularly
relevant to CE labeling as per EMC directive.
Ground connection
The ground of the power supply (battery negative) and all electronic devices (-) should not be connected
to ground (8). The entire electronic system is electrically isolated from ground. This also applies to the
sensors (5). All sensor signal lines and/or supply lines are not connected to the corresponding sensor
housings.
Signal-to-noise ratio
Electrical isolation of the mechanical and electronic components significantly increases the signal-to-
noise ratio. This high signal-to-noise ratio on all electrical lines is necessary for satisfactory transmission
of all data on the CAN bus and also all analog and binary sensor signals.
24 | General Information | MS150025/02E 2012-10
6 Generating set
7 Equipotential bonding
strip
8 Grounding
9 Equipotential bonding
strip
10 Equipotential bonding
strip
11 Mounting frame
12 GND (-)
13 +24 V VDC (+)
X! Inadmissible connec‐
tion!