Standard on all Russelectric automatic transfer switches and
bypass/isolation switches, this microprocessor-based system
controls all operational functions of the automatic transfer switch,
including standard accessories and user-specified optional
accessories. 
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Senses normal and emergency source voltages; indicates ATS position and CPU operation | |
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Provides 3-phase over/under voltage, over/under frequency, phase sequence detection, and phase differential monitoring for both normal and emergency sources | |
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Controller uses industry-standard open-architecture communications protocol for high-speed serial communications via multidrop connection to other controllers and to master terminal | |
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All control setup information, programs, and calibration data are stored in the unit's nonvolatile memory and saved in the event of a control power interruption | |
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Rechargeable NiCad battery provide 5 VDC power to the controller during the engine start timing cycle when no AC or DC power is available | |
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Self-diagnostics perform periodic checks of the memory, I/O and communications systems; invoke a software reset if error is detected | |
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Watchdog timer circuit invokes hardware reset if program execution exceeds 1.6 seconds | |
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Accessory Setup and Services screen allows accessory installation and changes to system setup, calibration, and diagnostic functions | |
Model 2000
