GE Industrial Solutions MX350 Instruction manual - Manual (Page 60)

3–30 MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL
POWER ANALYSIS CHAPTER 3: INTERFACING WITH THE MX350 AT CONTROLLER
Power analysis
Waveform capture
The EnerVista™ MX350 Setup software can be used to capture waveforms (or view trace
memory) from the MX350 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/Neutral 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™ MX350 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 MX350, 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