Alarms and alerts 9810 series - User manual
179 7EN05-0390-08
ΔT3 Alarm duration (in seconds)
Min1 Minimum value recorded during pickup period
Min2 Minimum value recorded during alarm period
The meter records the date and time when the alarm event starts (EV1) and when it ends (EV2).
The meter also performs any task assigned to the event, such as operating a digital output. The
meter also records minimum values (Min1, Min2) before, during or after the alarm period.
Relative setpoint
The meter’s Relative Setpoint modules behave similarly to the Setpoint modules, except the
pickup and dropout levels are set relative to the Nominal input source.
For more information on Relative Setpoint modules, see ION Reference, available on
www.usa.siemens.com/pds.
Sag/swell alarms
Your meter monitors your power system’s voltage and current for sags and swells.
When sag/swell limits are defined and alarming is enabled, the meter reports the disturbance’s
magnitude and duration, and logs data and waveform records associated with the disturbance.
You must configure nominal voltage and current for these alarms to function.
You can manually enter the limits (criteria) used by the meter to identify a sag or swell, or you can
have your meter learn sag/swell limits by monitoring your power system.
For more information on the Sag/Swell and Disturbance Analyzer modules, see ION Reference,
available on www.usa.siemens.com/pds.
Digital alarms
These alarms are triggered when the associated digital input changes state.
You can configure the alarm to be active when the digital input is on or off, depending on the
alarm’s purpose.
For example, if you used a digital input to monitor a breaker that is always supposed to be on, you
would set the alarm to be active when the breaker has tripped.
NOTE: To stop a digital alarm from being displayed, set the alarm priority to Info Only. Disabling
the digital alarm will disable all alarming functions of the associated digital input.
For more information on the Digital Input module, see ION Reference, available on
www.usa.siemens.com/pds.
Transient alarms
Transient alarms are triggered by voltage transient activity (for example, ITI CBEMA Type 1
disturbances).
You must configure nominal voltage for these alarms to function.
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