Electromagnetic compatibility
27
Read this manual carefully before starting any work!
This is particularly applicable to the chapter “General Safety Instructions”
and the respective safety instructions in the chapters.
Suppressor diodes are to be installed in a delta connection upstream of the engine and upstream of the
engine coupling joint (if not already installed on the engine by MAN):
S Type 5KP36CA (between positive terminal/negative terminal as well as positive terminal/ground)
S Type 5KP15CA (between negative terminal/ground).
Or a voltage filter 51.25907-0027/Schurter FMBB 5500.290 per 10 A power load.
Fundamentally, shielded cables are to be installed for the power supply (terminals 15, 30, 31 starting from
the battery) and all CAN lines. The shielding must be grounded at both ends.
If the cables are longer than 10 m, a further shielding contact point to functional ground must be provided at
least every 10 m.
The aftertreatment systems require shielding of the cables to the supply module (pins 1, 3) and the power
supply cables from the battery to the supply module terminal 30 and terminal 31 (pins 2 and 4 on the
supply module). The shielding must be connected to ground at both ends of each cable!
Details of these EMC-protective measures can be found in the circuit diagram for the respective engine type.
The “shielded cables” protective measure may not be necessary if the system manufacturer has verified
(by performing an EMC test of the entire system) that the applicable EMC regulations, instructions,
standards and customer specifications for deploying and operating the machine have been observed.
Here, the system manufacturer acts at their own risk. In this event, MAN Truck & Bus SE assumes no
liability for any EMC problems that arise.
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