The drawing below shows an example of a 300 mm wide control equipment cubicle.
ExplanationItem
Terminal block for auxiliary voltage distri-
bution
1
24 V DC power supply for control circuits2
Circuit breakers for control voltages3
Space for installation of items 2 and 3 for
a second inverter unit
4
(On the left-hand side wall) Terminal
blocks for control circuits and auxiliary
voltage distribution
5
BCU-xx control unit6
Terminal blocks for control unit I/O (option
+L504)
7
Mounting space for additional or optional
circuitry
8…10
Earthing switch of inverter unit output
(optional)
11
Control cable lead-through (optionally on
the roof of the cubicle)
12
Front view
Motor cabling
The motor cabling connects to the module via a quick connector at the back of the module.
By default, each inverter module is cabled individually to the motor. With an optional common
motor terminal cubicle, the outputs of the parallel-connected inverter modules are connected
to a separate cubicle containing a single set of output busbars.
The cubicle is available in bottom-exit and top-exit variants. The standard cabling direction
is down; top exit adds 200 mm to the depth of the cubicle.
30 Hardware description
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