Avatar Predictive Alarms

Predictive Alarms (PA) alert you of possible events regarding the applications being monitored. Predictive Alarms are triggered by a combination of configured protection functions and PV Input conditions. This section describes the configuration and requirements for the Predictive Alarms function.

The following is the list of avatars with configurable predictive alarms:

Motor One Direction
Motor Two Directions
Motor Y/D One Direction
Motor Y/D Two Directions
Motor Two Speeds
Motor Two Speeds Two Directions
Pump
Conveyor One Direction
Conveyor One Direction - SIL Stop, W. Cat 1/2*
Conveyor Two Directions
Conveyor Two Directions - SIL Stop, W. Cat 1/2

You can set up Predictive Alarms to send a specific message for a protection function without assigning a PV Input condition. PV Input conditions that trigger Predictive Alarms occur when the configured PV Inputs for the avatar are within a selected region of operation based on configurable thresholds. When either the protection function alarm resets or the PV Inputs exit the selected region of operation, the Predictive Alarm resets. Avatars support up to ten Predictive Alarms.

Avatars with Predictive Alarms support the following behavior for the PV Input PA Status output, applying a hysteresis of 5% (rounding down, from the range of valid values).

NOTE: Hysteresis is a window to avoid spurious state changes with small signal variations on analog sensors.

Predictive Alarm Hysteresis

	Hysteresis		PV Input PA Status
	PV Input value		High
	PV Input PA High Threshold		Nominal
	PV Input PA Low Threshold		Low

The following settings are needed to configure Predictive Alarms on avatars with Predictive Alarms support:

Alarm Input
Alarm Definition