Basler Electric BE1-700 - Manual (Page 97)

Figure 4-35. BESTlogic Function Element Screen, Breaker Failure
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 breaker failure function by selecting its mode of operation from the Mode pull-down menu. To
connect the elements 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
used. Then, select the BESTlogic variable, or series of variables to be connected to the input. Select
Save when finished to return to the BESTlogic Function Element screen. For more details on the
BESTlogic Expression Builder, see Section 7, BESTlogic Programmable Logic. Select Done when the
settings have been completely edited.
Table 4-25 summarizes the BESTlogic settings for Breaker Failure Protection.
Table 4-25. BESTlogic Settings for Breaker Failure Protection
Function Range/Purpose Default
Mode 0 = Disabled, 1 = Enabled 0
INI Logic expression that enables function when TRUE. 0
BLK Logic expression that disables function when TRUE. 0
Operating Settings for Breaker Failure Protection
Operating settings are made using BESTCOMS. Figure 4-36 illustrates the BESTCOMS screen used to
select operational settings for the breaker failure element. To open BESTlogic Function Element screen
for the breaker failure element, select Breaker Failure from the Screens pull-down menu. Alternately,
settings may be made using the SP-50BF ASCII command or through the HMI interface using Screen
5.3.1.1.
9376700990 Rev M BE1-700 Protection and Control 4-41