T1689 Technical Manual Rev 07
Drive (CDM) Design
MV3000 Air Cooled DELTA
InItial CDM ARRANGEMENT
Page 85
3.6
INITIAL CDM ARRANGEMENT
This section provides guidance for:
•
Enclosure sizing;
•
Positioning of DELTA components within the enclosure.
Specifications of individual DELTA components can be found in Section 2: Specification.
Further details relating to the assembly processes can be found in Section 5: CDM Assembly.
3.6.1
General Design Considerations
The CDM layout should include sufficient clearance to fit each component. Consideration should be given to
servicing access.
Ensure positions allow removal and replacement of all required modules/components.
•
Do not obstruct the DELTA power modules or control components by installing other equipment
in front of them.
When a 600 mm (23.6 in) deep enclosure is used, careful planning is required as there is limited space in front
of the modules for interconnections, door flanges and ventilation.
3.6.1.1
Component Weight
The weight of components must be considered in the CDM design. Most heavy components would be best
located at the base of the cabinet.
3.6.1.2
Thermal Considerations
Position the components with the lowest temperature rating and those dissipating small air losses in the lowest
temperature airflow, e.g.:
•
adjacent to the air inlet of the enclosure in an IP21 application;
•
adjacent to the air outlet from an air-to-liquid heat exchanger for an IP54 enclosure.
Allow space throughout the enclosure for adequate airflow.
3.6.1.3
Cable Routing
Consider the power cable entry and exit points as this will determine the enclosure’s internal arrangement.
Mechanical support will be required for all cables. Ensure that features are designed into the enclosure to
support cables.
The bend radii of all cables must be respected. Space must be allowed in the design for cables to change
direction.
Access is required to main and control connections of the modules.
For cable segregation, see Section 3.5.4: Routing & Segregation Of Cables.
