Disk Logging of Intermittent Power Faults in an Unattended Communication Controller
Original Publication Date: 1987-Sep-01
Included in the Prior Art Database: 2005-Feb-01
In a machine such as a communication controller, the power faults are of the following types: overcurrent, undervoltage, overvoltage, and air flow. They can occur in any power block and be reported to a central point in the power control subsystem. When power faults are detected, as the communication controller is exposed to malfunctions, the power control switches off the power in all the power blocks except in the power control itself, which allows an indication of the power fault to be externally presented to the communication controller. There are several ways of recovering from the power faults. This article describes a mechanism to keep track automatically of these power error recoveries.