Alarm Setpoint Learning Saves Time
September 28, 2004
Utilizing your Circuit Monitor's alarm functionality to detect power quality events is one of the most powerful tools of a PowerLogic system. Now you can simplify your setup process by taking advantage of advanced Circuit Monitor alarm functionality with "automatic" alarm configuration capabilities known as Alarm Setpoint Learning for the Series 4000 Circuit Monitor (CM4000). Alarm Setpoint Learning learns normal operating ranges for specified alarm quantities then recommends or automatically configures alarm setpoints with minimal end user involvement.
Jon Bickel, Hardware Product Manager, explains how using alarms in a learn mode can detect change in an innovative way. Bickel states "having the CM4000 learn about its "electrical environment" over a period of time allows the meter to know what is normal and what is abnormal for an electrical circuit. For example, characterizing the day to day voltage swings on an electrical circuit gives the user a better idea of what values to use when setting the alarm thresholds. This feature even allows the meter to automatically self-configure even during the learning mode or after the learn period is complete."
The Alarm Setpoint Learning capability is executed via the System Manager software (SMS) version 3.3.2 or later in conjunction with CM4000 Firmware Rev. 12.64 or later. From the CM4000 Device Onboard Alarms/Events Setup, the user selects the quantities and the period of time for the learning process then initiates the learn mode during a period of "normal" operation (normal meaning typical day not during the winter shutdown, or during a period when a third shift has been added to meet a temporary increase in production demand.) The learn mode analyzes the variation of any alarm parameter over a learning window and can recommend or automatically set alarm parameters based on the levels observed during the learn mode.
Alarm Setpoint Learning is available for CM4000 standard-speed and high-speed analog alarms, disturbance alarms, or waveshape alarms. Bickel concludes "over the life time of the system, this feature can save end users a tremendous amount of time configuring and fine-tuning alarm setpoints."