Alarm types
| Type | Description |
|---|---|
| Setpoint (standard) |
Setpoint alarms compare the actual value of a parameter to a specified limit or range of values. These include measured voltage and current values and calculated power quality values. Some setpoint alarms use high-speed measurements for up to 1 millisecond resolution. |
| Digital | Digital alarms are triggered on a digital input’s on/off state. |
| Disturbance (sag/swell) | Disturbance alarms are triggered on a measured sag or swell. |
| Transient | Transient alarms are triggered on a measured transient event. |
| Unary | Unary alarms are not configurable and generate an alarm based on the meter’s state, for example, the meter powering up. |
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Active: the meter detects the alarm condition is met.
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Historical: the alarm condition previously existed but the condition has since returned to a non-alarm state.
See the ION Reference, available from www.se.com, for more information about Setpoint, Relative Setpoint, Digital Input, Disturbance Analyzer, Transient, High-Speed Transient (ION9000T only) and Sag/Swell modules.