Capabilities Of The Access 9360 During An Event - Siemens ACCESS 9340 Reference Manual

PMCM-9340D-0208
2/2008

Capabilities of the ACCESS 9360 During an Event

© 2008 Siemens Energy & Automation, Inc. All Rights Reserved.
The ACCESS 9360 calculates rms magnitudes, based on 128 data
points per cycle, every 1/2 cycle. This ensures that even sub-cycle
duration rms variations are not missed.
The meter is configured with 12 default voltage disturbance alarms
for all voltage channels. Current sag and swell alarms are available
by configuring custom alarms. A maximum of 12 disturbance alarms
are available. When the ACCESS 9360 detects a sag or swell, it can
perform the following actions:
•
Perform a waveform capture with a resolution from 185 cycles
at 16 samples per cycle on one channel down to 3 cycles at 128
samples per cycle on all six channels of the metered current and
voltage inputs (see Figure 9–1 on page 104). Use ION Setup to
setup the event capture and use WinPM.Net to retrieve the
waveform.
•
Record the event in the alarm log. When an event occurs, the
ACCESS 9360 updates the alarm log with an event date and time
stamp with 1 millisecond resolution for a sag or swell pickup, and
an rms magnitude corresponding to the most extreme value of the
sag or swell during the event pickup delay. Also, the ACCESS
9360 can record the sag or swell dropout in the alarm log at the
end of the disturbance. Information stored includes: a dropout
time stamp with 1 millisecond resolution and a second rms
magnitude corresponding to the most extreme value of the sag or
swell. Use WinPM.Net to view the alarm log.
NOTE: The meter display has a 1 second resolution.
•
Force a data log entry in up to 3 independent data logs. Use ION
Setup to set up the data logs and then use WinPM.Net to view the
data logs.
•
Operate any output relays when the event is detected.
•
Indicate the alarm on the display by flashing the maintenance
icon to show that a sag or swell event has occurred.
Chapter 10—Disturbance Monitoring (ACCESS 9360)
ACCESS 9340 and 9360 Meters
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