MTU Detroit Diesel 12 V 2000 P62, Technical Publication

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Product Summary 21
Grounding
1 PIM
2 SAM
3 Engine governor
4 Battery
5 To engine sensors
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 connection!
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.
MS15009/00E 06-09 © MTU