Rockwell Automation 284D ArmorStart - Getting Started - Manual (Page 18)

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Publication 284D-QS001D-EN-P - July 2006
The working space around the ArmorStart may be minimized as the
ArmorStart does not require examination, adjustment, servicing or
maintenance while energized. In lieu of this service, the ArmorStart is
meant to be unplugged and replaced after proper lockout/tag-out procedures
have been employed.
Since the ArmorStart is available with a factory installed HOA keypad
option this may require the ArmorStart to be selected and installed as
follows if the application requires frequent use of the hand operated
interface by the equipment operator:
1. They are not less than 0.6 m (2 ft) above the servicing level and are
within easy reach of the normal working position of the operator.
2. The operator is not placed in a hazardous situation when operating
them.
3. The possibility of inadvertent operation is minimized.
If the operated interface is used in industrial establishments where the
conditions of maintenance and supervision ensure that only qualified
persons operate and service the ArmorStart's operator interface, and the
installation is located so that inadvertent operation is minimized then other
installation locations with acceptable access can be provided.
DeviceNet Network Installation
The ArmorStart Distributed Motor Controller contains the equivalent of
30 in. (0.76 m) of Device Net drop cable's electrical characteristics and
therefore 30 in. of drop cable must be included in the DeviceNet drop cable
budget for each ArmorStart in addition to actual drop cable required for the
installation.
Other DeviceNet System Design Considerations
The separation of the control power and DeviceNet power is recommended
as a good design practice. This minimizes the load on the DeviceNet supply,
and prevents transients which may be present on the control power system
from influencing the communication controls.