Rockwell Automation 284D On-Machine ArmorStart Accelerator Toolkit - Manual (Page 55)

Publication IASIMP-QS015C-EN-P - August 2011 55
System Layout and Wiring Chapter 2
Since the ArmorStart device is available with a factory installed HOA keypad option, this may require the
ArmorStart device to be selected and installed as follows. If the application requires frequent use of the
hand-operated interface by the equipment operator:
• they should not be less than 0.6 m (2 ft) above the servicing level and are within easy reach of the
normal working position of the operator.
• the operator is not placed in a hazardous situation when operating them.
• the possibility of inadvertent operation is minimized.
If the operated interface is used in industrial environments where the conditions of maintenance and
supervision ensure that only qualified persons operate and service the ArmorStart 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 0.76 m (30 in) of DeviceNet drop
cable's electrical characteristics and therefore 0.76 m (30 in) of drop cable must be included in the DeviceNet
drop cable budget for each ArmorStart controller in addition to actual drop cable required for the
installation.
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.