provide power and control cable entries at the floor of the cabinet. The entries are
equipped with grommets and 360° grounding hardware.
For non-UL Listed units, bottom entry/exit is the default cabling arrangement.
￭
Top cable entry/exit (options +H351 and +H353)
The top entry (+H351) and top exit (+H353) options provide power and control cable
entries at the roof of the cabinet. The entries are equipped with grommets and 360°
grounding hardware.
￭
Cable conduit entry (option +H358)
The option provides US/UK conduit plates (plain 3 mm thick steel plates without any
ready-made holes).
￭
Common motor terminal cubicle (option +H359)
As standard, each inverter module must be individually cabled to the motor. This
option provides an additional cubicle containing a single set of terminals for the motor
cables.
The width of the cubicle and the size of the terminals within depend on the power
rating of the drive.
Note that this option is not available with option +E206 (sine filters), In this case, the
motor cables are connected to the sine filter cubicle.
￭
Common output terminals (option +H366)
As standard, each inverter module must be individually cabled to the motor. This
option adds bridging that connects the outputs of multiple (in practice, two or three)
inverter modules mounted in the same cubicle. The bridging balances the motor
current between the modules, which allows more cabling options. For example, it is
possible to use a number of cables that could not otherwise be evenly distributed
between the inverter modules.
WARNING!
The bridging can carry the nominal output of one inverter module. In case of
three parallel modules, ensure that the load capacity of the bridging is not
exceeded. For example, if the cabling connects to the output busbars at one
module only, use the module in the middle.
Note: The +H366 option only interconnects the outputs of inverter modules within
the same cubicle, not modules installed in different cubicles. Therefore, when the drive
has more than three inverter modules, make sure that the load is distributed evenly
between the modules:
• In case of two inverter cubicles of two modules, connect the same number of
cables to each cubicle.
• In case of one inverter cubicle with three modules and another with two, each
cubicle requires a number of cables proportional to the number of modules within.
For example, connect three out of five (or six out of ten, etc.) cables to the cubicle
with three modules, the remaining two out of five (four out of ten) cables to the
cubicle with two modules.
56 Operation principle and hardware description
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