Inverter unit hardware
￭ General
An inverter unit contains the components required to control one motor. These include one
or more inverter modules connected in parallel, together with the necessary auxiliary
equipment such as control electronics, fusing, cabling and switchgear.
ACS880-107 inverter units range from 1.5 to 5600 kW in power. ACS880-107 inverter units
employ inverter modules from frame size R1i to R8i. Up to approximately 500 kW, inverter
units consist of one module only; higher powers are achieved by connecting multiple R8i
modules in parallel.
All inverter modules have coated circuit boards as standard.
￭ Cabinet system
An inverter unit is built into one or more adjoining cubicles and contains the components
that are required to control one motor. At smaller inverter sizes, a single cubicle may contain
several inverter units, each controlling a different motor. On the other hand, large inverter
units consist of parallel-connected modules and may occupy several cubicles.
Examples of the cabinet configurations are included below as well as in the dimensions and
weights chapter. The motor cabling direction is optionally up or down – see below under
each module frame size for specific information.
￭ Cooling
Each inverter module has its own cooling fan(s). Control cubicles may have additional
cooling fans.
The inverter cubicles have the air intake at the lower part of the door. The intake can
optionally be through the floor, adding 130 mm (5.12”) to the standard depth of 600 mm
(23.62”) of the cabinet.
The cooling air outlets are on the roof of each cubicle. Some configurations have exhauster
fans fitted inside the top compartment of the cubicle. A channeled air outlet is optional.
Hardware description 17
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