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PM850 waveform association with an alarm

Metering & Power Quality

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Sven_Ortmann
Commander Commander
Commander
0 Likes
2
170

PM850 waveform association with an alarm

Hi,

how is it possible to associate a waveform with an alarm at an PM 850?

i read about it but i did not fint settings in ION Setup

4945

4944

Here i have some events with waveform but no alarms

4946

4947

on the device i can see the waveforms, but how can i connect the waveforms to see direktly with one klick on alarms?

4948


Accepted Solutions
Hal_Etheridge
Janeway Janeway
Janeway
0 Likes
0
120

Re: PM850 waveform association with an alarm

Waveforms and alarms are actually independent of each other.  What this means is that just because there is an alarm there may or may not be an associated waveform.  Also vice versa.  Note that an alarm *may* trigger a waveform capture but this is dependent on the device configuration.  Likewise a waveform can be triggered without an associated event (like a manual trigger).

What the software does to associate the two types of log data is to match the timestamps of the event and the waveform (or data log) and display them together.  This is done through a custom log query request.  For examples have a look at the log queries on the default Vista diagrams.  The devices with PQ typically do this sort of query so they would be a good first place to look (ie the PQ specific diagrams).  Typical diagram log queries are much simpler - much like a tabular report - just query a particular measurement for that source and display all timestamped values.  The PQ log queries do additional filtering and joining of multiple measurements to display a more complete system view of the PQ incident.

See Answer In Context

2 Replies 2
Robert_Lee
Captain Captain
Captain
0 Likes
0
120

Re: PM850 waveform association with an alarm

Hi Sven,

For the older PowerLogic devices, associating waveforms to an alarm is just a means to say that when an alarm occurs, that it will trigger a waveform capture.  This can be done using ION Setup (or PMCU) via the Onboard Alarms/Events setup dialog.  There is a checkbox that appears near the bottom of the alarm options which indicate if you wish to trigger a waveform capture if the alarm goes active.

4952
When our PME software downloads the meter events and waveforms, it will then see that the two pieces of data are somewhat connected and show the icon as you've stated.  Manually triggered waveforms however will not appear in such a manner nor can you assign them to events after the fact (not that I know of but maybe some one from the PME team can clarify if it is possible).

Hal_Etheridge
Janeway Janeway
Janeway
0 Likes
0
121

Re: PM850 waveform association with an alarm

Waveforms and alarms are actually independent of each other.  What this means is that just because there is an alarm there may or may not be an associated waveform.  Also vice versa.  Note that an alarm *may* trigger a waveform capture but this is dependent on the device configuration.  Likewise a waveform can be triggered without an associated event (like a manual trigger).

What the software does to associate the two types of log data is to match the timestamps of the event and the waveform (or data log) and display them together.  This is done through a custom log query request.  For examples have a look at the log queries on the default Vista diagrams.  The devices with PQ typically do this sort of query so they would be a good first place to look (ie the PQ specific diagrams).  Typical diagram log queries are much simpler - much like a tabular report - just query a particular measurement for that source and display all timestamped values.  The PQ log queries do additional filtering and joining of multiple measurements to display a more complete system view of the PQ incident.