Date Code 20010625
Front-Panel Interface
11-1
SEL-311L Instruction Manual
SECTION 11: FRONT-PANEL INTERFACE
I
NTRODUCTION
This section describes how to get information, make settings, and execute control operations
from the relay front panel. It also describes the default displays.
F
RONT
-P
ANEL
P
USHBUTTON
O
PERATION
Overview
Note in Figure 11.1 that most of the pushbuttons have dual functions (primary/secondary).
A primary function is selected first (e.g., METER pushbutton).
After a primary function is selected, the pushbuttons revert to operating on their secondary
functions (CANCEL, SELECT, left/right arrows, up/down arrows, EXIT). For example, after
the METER pushbutton is pressed, the up/down arrows are used to scroll through the front-panel
metering screens. The primary functions are activated again when the present selected function
(e.g. metering) is exited (press EXIT pushbutton) or the display goes back to the default display
after no front-panel activity for a settable time period (see global setting FP_TO in the Settings
Sheets at the end of
Section 9: Setting the Relay
; the relay is shipped with FP_TO = 15
minutes).
Figure 11.1: SEL-311L Relay Front-Panel Pushbuttons—Overview
Primary Functions
Note in Figure 11.2 and Figure 11.3 that the front-panel pushbutton primary functions
correspond to serial port commands—both retrieve the same information or perform the same
function. To get more detail on the information provided by the front-panel pushbutton primary
functions, refer to the corresponding serial port commands in Table 10.5 in
Section 10: Line
Current Differential Communications and Serial Port Communications and Commands
. For
example, to get more information on the metering values available via the front-panel METER
pushbutton, refer to the
MET Command (Metering Data)
in
Section 10
.
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