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DE212C drive shelf: Site wiring and power

The DE212C drive shelf uses wide-ranging, redundant power supplies that automatically accommodate voltages to the AC power source. The power supplies meet standard voltage requirements for both North American (USA and Canada) operation and worldwide (except USA and Canada) operation. The power supplies use standard industrial wiring with line-to-neutral or line-to-line power connections.

Keep this information in mind when you prepare the installation site for the drive shelf:
  • Protective ground – Site wiring must include a protective ground connection to the AC power source.
    Note: Protective ground is also known as safety ground or chassis ground.
  • Circuit overloading – Power circuits and associated circuit breakers must provide enough power and overload protection. To prevent damage to the drive shelf, isolate its power source from large switching loads, such as air-conditioning motors, elevator motors, and factory loads.
  • Power interruptions – The drive shelf can withstand these applied voltage interruptions:
    • Input transient – 50 percent of the nominal voltage
    • Duration – One half-cycle
    • Frequency – Once every 10 seconds
  • Power failures – If a total power failure occurs, the drive shelf automatically performs a power-on recovery sequence without operator intervention.