Basler Electric BE1-851 - Manual (Page 86)

Recloser Fail Timer (79F)
This timer begins when the 79C output becomes TRUE and continues counting until the STATUS input
becomes TRUE. If the 79F timer times out, the recloser function is driven to lockout and the 79LO and
79F outputs become TRUE. The relay remains in Lockout until the breaker is manually closed and the
STATUS input remains TRUE for the reset time.
Sequence Controlled Block (79SCB)
This output becomes TRUE when either the 52 status input OR the 79C input is TRUE AND the
sequence operation (shot counter) matches one of the programmed steps of the S-79SCB command.
Figure 4-32 illustrates 79SCB logic.
Figure 4-32. 79SCB Logic
BESTlogic™ Settings for Reclosing
BESTlogic settings are made from the BESTlogic Function Element screen in BESTCOMS. Figure 4-33
illustrates the BESTCOMS screen used to select BESTlogic settings for the reclosing element. To open
the BESTlogic Function Element screen for Reclosing (79), select Reclosing from the Screens pull-down
menu. Alternately, settings may be made using the SL-79 ASCII command.
Figure 4-33. BESTlogic Function Element Screen, 79
At the top center of the BESTlogic Function Element screen is a pull-down menu labeled Logic. This
menu allows viewing of the BESTlogic settings for each preprogrammed logic scheme. A custom logic
scheme must be created and selected in the Logic pull-down menu at the top of the screen before
BESTlogic settings can be changed. See Section 7, BESTlogic Programmable Logic.
Enable the reclosing function by selecting its mode of operation from the Mode pull-down menu. To
connect the element’s inputs, select the button for the corresponding input in the BESTlogic Function
Element screen. The BESTlogic Expression Builder screen will open. Select the expression type to be
4-30
BE1-851 Protection and Control 9289900990 Rev R