SATEC SA300 ezPAC Operation Manual - Manual (Page 28)

Chapter 3 Using the RDM Data Display
28 SA300 Substation Automation Unit
• When direct wiring is used, voltages are displayed in volts with
one decimal place, and power in kilowatts with three decimal
places.
• When wiring via PT is used, the PT ratio up to and including 4.0,
voltages are displayed in volts, and power in whole kilowatts.
• For the PT ratio above 4.0, voltages are displayed in kilovolts,
and power in megawatts with three decimal places.
Currents are displayed in amperes with two decimal places.
Primary and Secondary Volts
Volts are displayed in primary (default) or secondary units. Change the volts display
mode through the Display Setup Menu (see
Configuring the RDM ).
Auto Scroll
With Auto Scroll option enabled (see Configuring the RDM ), the common
measurements display (main screen) s crolls automatically after 30 seconds of
uninterrupted use.
To stop auto scrolling, press either arrow key.
Auto Return to the Main Screen
With Auto Return option enabled (see Configuring the RDM ), the display
automatically returns to the main screen from any other measurement screen after 30
seconds of uninterrupted use.
Simple Reset of Accumulated Data
When changing data via the communications is not password protected, you can
reset the Min/Max registers, maximum demands and energies from the display mode
without entering the reset menu.
Diagnostics Display
If a critical error occurs in the SA300, the RDM stops updating the display and shows
a diagnostic message “Critic Error”. The diagnostic page in the Status Information
display (see Status Information Display below) indicates a critical error until the error
is cleared. See Device Diagnostic Codes in Appendix F for the list of diagnostic
events that cause a critical error.
Clear the device diagnostics error via the RDM from the Status Information display
(see
285H
Resetting Device Diagnostics ), or examine what event caused the critical error
and clear the device diagnostics through HyperTerminal (see
286H
Using HyperTerminal )
or through PAS (see
287H288H
Viewing and Clearing Device Diagnostics in Chapter 11).
134B
Navigation Keys
The RDM navigation keys are used as follows:
244B
MIN/MAX
MIN/MAX - Selects the Min/Max and Max. Demand Display
245B
THD/TDD
THD/TDD - Selects the Power Quality - Total Harmonics Display
246B
ENERGY
ENERGY - Selects the Energy Display
ENERGY
ENTER
THD/TDD
ESC
S
T
MIN
MAX
diAG
Error
Critic