Basler Electric BE1-851 - Manual (Page 67)

Figure 4-10. BESTlogic Function Element Screen, Phase (50TP)
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. User or custom
logic must be selected on this menu in order to allow changes to the mode and inputs of the
function/element.
Enable the instantaneous overcurrent function by selecting its mode of operation from the Mode pull-
down menu. When enabled, this element is connected to the CT input circuits.
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 BESTlogic
settings have been completely edited.
Table 4-4 summarizes the BESTlogic settings for Instantaneous Overcurrent Protection.
Table 4-4. BESTlogic Settings for Instantaneous Overcurrent Protection
Function Range/Purpose Default
Mode 0 = Disabled, 1 = Enabled 1
Block Logic expression that disables function when TRUE. 0
Example 1. Make the following settings to the 50TP element. Refer to Figure 4-10.
Mode: Enable
Block: IN1
Operating Settings for Instantaneous Overcurrent Protection
Operating settings are made using BESTCOMS. Figure 4-11 illustrates the BESTCOMS screen used to
select operational settings for the instantaneous overcurrent element. To open the Overcurrent screen,
select Overcurrent from the Screens pull-down menu. Alternately, settings may be made using the S-
x50T ASCII command. Settings can also be made from the front panel HMI using Screens 5.x.1.1 through
9289900990 Rev R BE1-851 Protection and Control 4-11