Siemens 9810 Series, User Manual, Page: 124 / 218

Alarms and alerts
EV1 EV2
∆T1
∆T2
∆T3
Min1
Min2
A Pickup setpoint
B Dropout setpoint
ΔT1 Pickup time delay period (in seconds)
EV1 Start of alarm condition
ΔT2 Dropout time delay (in seconds)
EV2 End of alarm condition
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, download ION Reference at
www.usa.siemens.com/pds.
Sag/swell alarms
Your meter monitors your power system’s voltage and current for sags and swells
(INCITS (CBEMA) Type 2 and Type 3 disturbances); it then reports the
disturbance’s magnitude and duration.
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,
download
ION Reference at www.usa.siemens.com/pds.
Related Topics
• Configuring Sag/Swell logging using ION Setup
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 (setting it to Force Off) will disable all
alarming functions of the associated digital input.
See the ION Reference, available from www.usa.siemens.com/pds, for more
information about the Digital Input module.
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