Delta MM300 Instruction Manual Page 76

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CHAPTER 4: SOFTWARE OPERATION POWER ANALYSIS
MM300 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL 4–9
4.2 Power analysis
4.2.1 Waveform capture
The EnerVista MM300 Setup software can be used to capture waveforms (or view trace
memory) from the MM300 relay at the instance of a trip, activation of a virtual output, or
other conditions. A maximum of 64 cycles (32 samples per cycle) can be captured and the
trigger point can be adjusted to anywhere within the set cycles.
If the trigger mode is set to "ONE-SHOT," then the trace memory is triggered once; if it is set
to "RETRIGGER," then it automatically retriggers and overwrites the previous data.
The following waveforms can be captured:
Phase A, B, and C currents (Ia, Ib, and Ic)
Ground current (Ig)
Phase A-N, B-N, and C-N voltages (Van, Vbn, and Vcn) if wye-connected. Phase A-B, B-
C, and C-A voltages (Vab, Vbc, and Vca) if delta-connected.
Digital data for output relays and contact input states.
1. With EnerVista MM300 Setup running and communications established, select the
Diagnostics > Waveform menu item to open the Waveform Capture setup window.
2. Click on Trigger Waveform to trigger a waveform capture. Waveform file numbering
starts with the number zero in the MM300, so that the maximum trigger number will
always be one less than the total number of triggers available.
3. Click on the Save to File button to save the selected waveform to the local PC. A new
window will appear, requesting the file name and path. One file is saved as a
COMTRADE file, with the extension "CFG." The other file is a "DAT" file, required by the
COMTRADE file for proper display of waveforms
4. To view a previously-saved COMTRADE file, click the Open button and select the
corresponding COMTRADE file.
5. To view the captured waveforms, click on the Launch Viewer button. A detailed
Waveform Capture window will appear as shown below.
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