Basler Electric DGC-2020HD - Manual (Page 160)

150 9469300990 Rev B
Logic Outputs
Setting group function logic has four logic variable outputs, SG0 through SG3. The appropriate variable is
asserted when each setting group is active. These logic variables can be used in programmable logic to
modify the logic based upon which setting group is active.
Changing Setting Groups
When the DGC-2020HD switches to a new setting group, all functions are reset and initialized with the
new operating parameters. The settings change occurs instantaneously so at no time is the DGC-2020HD
off line.
Setting Group Selection
There is a direct correlation between each logic input and the setting group that will be selected. That is,
asserting input D0 selects SG0 and asserting input D1 selects SG1, etc. The active setting group latches-
in after the input is read so they can be pulsed. It is not necessary that the input be maintained. If one or
more inputs are asserted at the same time, the numerically higher setting group will be activated. A pulse
must be present for approximately one second for the setting group change to occur.
Logic Connections
Setting Group logic connections are made on the BESTlogicPlus screen in BESTCOMSPlus. The setting
group logic block is illustrated in Figure 87.
Figure 87. Setting Group Logic Block
Generator Protection DGC-2020HD