Schweitzer Engineering Laboratories SEL-2020, Instruction Manual, Page: 221 / 470

Date Code 20010518 Settings 6-39
SEL-2020 Instruction Manual
When you exit settings, you will be prompted for settings acceptance, just like in all other
settings classes. If the User region allocation (USER settings in SET A) is insufficient for the
given SET M settings, the SEL-2020 will automatically increase it as necessary. If there is
insufficient memory for the increased User region, you will be warned and the STATUS
command will show the SET M status on the port to be disabled.
Once these settings have been accepted, the SEL-2020 will process them every half second, on
the half second.
SET G - G
LOBAL
S
ETTINGS
Use the SET G command to:
•
Create a device identification string.
•
Select a time synchronization source.
•
Define intermediate logic using SEL
OGIC
Control Equations.
•
Define SEL
OGIC
Control Equations that control optional I/O board output contacts.
Table 6.17: SET G Global Setting Prompts
DEVICE ID
TIME_SRC
LOG_EN (Y/N)
N (O) Y (ES)
V
W
X
Y
Z
XPICKUP
XDROPOOUT
YPICKUP
YDROPOUT
ZPICKUP
ZDROPOUT
OUT1 Only
OUT2 with
OUT3 optional
OUT4 I/O Board
Save changes (Y/N)
Y (ES) N (O)
Settings aborted
Global settings include primarily the intermediate logic and optional output contact logic
available in the SEL-2020. Table 6.18 lists all Global settings and their description strings. You
should use SET G to modify and SHO G to view these settings.
Of the five intermediate logic variables (V, W, X, Y, and Z) described in Table 6.18, X, Y, and Z
have generic pickup/dropout timers associated with them. For the output of a timer to be
asserted, its input must first be asserted for the pickup time. Once a timer is asserted, for its