GE Power Management
469 Motor Management Relay
8-13
8 469 PC SOFTWARE
8.3 USING 469PC
8
8.3.8 WAVEFORM CAPTURE
The 469PC software can be used to capture waveforms from the 469 at the instant of a trip. A maximum of 64
cycles can be captured and the trigger point can be adjusted to anywhere within the set cycles. A maximum of
16 waveforms can be buffered (stored) with the buffer/cycle trade-off.
The waveforms captured are:
•
Phase Currents A, B, and C
•
Differential Currents A, B, and C
•
Ground Current
•
Phase Voltages A-N, B-N, and C-N
1.
With 469PC running and communications established, select the Actual > Waveform Capture menu item
to open the Waveform Capture window.
2.
The waveform of Phase A current of the last 469 trip will appear. The date and time of this trip is displayed
on the top of the window. The RED vertical line indicates the trigger point of the relay.
3.
Press the Setup button to enter the Graph Attribute page. Program the graphs to be displayed by select-
ing the pull down menu beside each Graph Description. Change the Color, Style, Width, Group#, and
Spline selection as desired. Select the same Group# for all parameters to be scaled together.
Figure 8–9: GRAPH ATTRIBUTE PAGE – WAVEFORM CAPTURE
4.
Click Save to store these graph attributes then OK to close this window.
5.
Select the graphs to display by checking the appropriate checkboxes.
6.
The Save button can be used to store the current image on the screen, and Open can be used to recall a
saved image. Print will copy the window to the system printer.
