Simga2N Traction Advanced Manual– V1.3 Page 36 (166) ©2021 DMC GmbH Herten Germany
3.3 Mechanical installation
The DMC Simga2NController family’s mechanical dimensions are reported in the figure above. Ever through all the
controllers meet the IP65 protection against dust and water, it is suggested to choose carefully the installation location
to protect them from damage.
The Controllers should be bolted down to a flat (0.2mm max. Deviation) paint free surface, eventually lightly coated
with a thermal transfer compound, by means of the 4 fixing M8 holes provided. Care should be taken not to trap any
wires, etc., under the controller.
The mounting surface MUST be a substantial metal section of the vehicle for the full controller ratings to be achieved.
If there is no sufficient cooling surface available, then we advise to use a ripped aluminium heat sink supported by a fan,
or mount the heat sink in such a way that the driving wind cools the system.
3.3.1 Line contactor
The contactor mounting plane can affect performance; contactors should never be mounted with their terminal studs
vertically down. For further applications information on contactors, please consult DMC GmbH in Herten.
As blow-out magnets are fitted to contactors (except 24V) ensure that no magnetic particles can accumulate in the
contact gaps and cause malfunction. Ensure that contactors are wired with the correct polarity to their power terminals
as indicated by the + sign on the top moulding.
The Simga2Ncan be used with permanently-connected on-board chargers, as long as the maximum allowed voltage of
the particular controller model is not exceeded. If the batteries should not be charged during operation, a change-over
contactor as line contactor is a good solution to fit both the charger and the controller in the truck.
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