Schneider Electric 4000

63230-300-212 Chapter8—Waveform an d Event Capture

April 2001 Typesof Waveform Captures

109

Theadaptive waveform capture is used to record longerevents than can’tbe

recorded witht he disturbancewaveform capture. For example,using the

adaptivewaveform capture youcould get a detailed view of an entire recloser

sequence.Each time a sag orswell is detected, the circuit monitor triggers

the waveformcapture. The circuit monitor initiates an adaptivewaveform

capture automaticallywhen an alarm condition occurs, or the waveform

capture can alsobe tr iggeredby an external device such as a protective

relay.The unique feature of the adaptive waveformcapture is that it can be

enabled to stoprecording at the dropout of the alarm, which allows you to

capture data while thealarm is true. You can also initiate this waveform

capture at anytime.

In SMS, for the adaptivewaveform capture, you select the sample rate,and

how many secondsof the event the circuit monitor will capture(see

Table 8–2). Youcan also select how many channelsto record. Selecting

fewerchannels lets you record more seconds.

Choose fewersamples per cycle when you want to seemore total seconds;

choosefewer channels to see a longerduration. See the SMS online help for

instructions on settingup adaptive waveform captures.

NOTE: The circuitmonitor also records the status of up to 16 digital inputsthat canbe displayed along with the waveformcapture. This is configuredbydefault.

Tabl e 8–2: AvailableResolutions for Adaptive Waveform Captures

Samples per Cycle

(Resolution) Max. Duration

(withper-phase currentand voltagechannels)

16 110 seconds

32 55seconds

64 27seconds

128 13 seconds

256 6seconds

512 3 seconds

Adaptive WaveformCapture