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63230-300-212 Chapter 8—Waveform and Event Capture
April 2001 Setting up the Circuit Monitor for Automatic Event Capture
111
© 2001 Schneider Electric All Rights Reserved
There are two ways to set up the circuit monitor for automatic event capture:
• Use an alarm to trigger the waveform capture.
• Use an external trigger such as a relay.
This section provides an overview of the steps you perform in SMS to setup
these event captures.
To set up the circuit monitor for automatic event capture, use
SMS to perform
the following steps:
NOTE: For detailed instructions, refer to the SMS online help.
1. Select the type of event capture (disturbance, adaptive, or 100ms) and
set up the number of samples per cycle, pre-event cycles or seconds, and
duration.
2. Select an alarm condition.
3. Define the pick up and dropout setpoints of the alarm, if applicable.
4. Select the automatic waveform capture option (Capture Waveform on
Event). Check the pickup-to-dropout box if you want it to use it for an
adaptive waveform capture.
5. Repeat these steps for the desired alarm conditions.
When the circuit monitor is connected to an external device such as a
protective relay, the circuit monitor can capture and provide valuable
information on short duration events such as voltage sags. The circuit
monitor must be equipped with digital inputs on an
IOX Extender, or an
IOC-44 Digital I/O Card.
To set up the circuit monitor for event capture triggered by an input, use
SMS
to perform the following steps:
NOTE: For detailed instructions, refer to the SMS online help.
1. Select the type of event capture (disturbance, adaptive, or 100ms) and
set up the number of samples per cycle, pre-event cycles or seconds, and
duration.
2. Create a digital alarm for the input.
3. Select the alarm.
4. Choose the type of event recording you would like.
The circuit monitor can store multiple captured waveforms in its nonvolatile
memory. The number of waveforms that can be stored is based on the
amount of memory that has been allocated to waveform capture. However,
the maximum number of stored waveforms is eighty of each type. All stored
waveform data is retained on power-loss.
SETTING UP THE CIRCUIT MONITOR
FOR AUTOMATIC EVENT CAPTURE
Setting Up Alarm-Triggered
Event Capture
Setting Up Input-Triggered
Event Capture
WAVEFORM STORAGE