User manual 09/2009 - Schneider Electric

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User manual 09/2009 - Schneider Electric

AlarmsAlarm on Superiority ConditionActivation of the alarm on a superiority condition is determined using 2 thresholds and 2 time delays.The figure below illustrates activation of an alarm on a superiority condition:SA Pick-up thresholdTA Pick-up time delaySD Drop-out thresholdTD Drop-out time delay1 Alarm: pick-up zone (in green)Alarm on Inferiority ConditionActivation of the alarm on an inferiority condition is determined according to the same principle.The figure below illustrates activation of an alarm on an inferiority condition:SA Pick-up thresholdTA Pick-up time delaySD Drop-out thresholdTD Drop-out time delay1 Alarm: pick-up zone (in green)LV434104 09/2009 107

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