Basler Electric BE1-851 - Manual (Page 312)

HMI Display
This tab (see Figure 14-8) allows the user to change the screen scroll list. Only the code for the latest
version of BESTCOMS is contained within BESTCOMS. If you have an earlier version of the embedded
firmware in your relay and selected that information on the General Information tab under General
Operation Screen, you can select a screen scroll item in BESTCOMS that is not available in the relay. If
you do, you will get an error code immediately.
Figure 14-8. General Operation Screen, HMI Display Tab
Setting Group Selection
Pull down the Screens menu and select Setting Group Selection or click on the Setting Group
Selection icon that is shown at the right margin of this paragraph. This screen (Figure 14-9)
does not have folder tabs and it is labeled Setting Group Selection/Setting Group Automatic
Control Settings.
Setting group selection involves programming the relay to automatically select one group out of four
protective element setting groups in response to system conditions. When the system is normal, the
default or normal group is 0. Auxiliary setting groups allow adapting the coordination settings to optimize
them for a predictable situation. Sensitivity and time coordination settings can be adjusted to optimize
sensitivity or clearing time based upon source conditions or to improve security during overload
conditions. Near the bottom of Figure 14-9, there is a Monitor Setting window for Setting Groups 1, 2 and
3. This field in each group allows you to select which element controls that specific group selection. The
Switch Threshold sets the level for the monitored element and the Switch Time sets the time delay to
prevent the group change from changing the instant that the monitored element exceeds the Switch
Threshold setting. Return Threshold and Time does the same thing for changing back to the previous
group.
You do not have to depend only on monitored conditions to change group selection. The active Setting
Group can be controlled at any point in time by the setting group control logic. (Refer to Section 4,
Protection and Control, for more information on Setting Groups.) The setting group control also has an
alarm output variable SGC (Setting Group Changed). This output is asserted whenever the BE1-851
switches from one setting group to another. The alarm bit is asserted for the SCCON time setting.
You can click in the Setting Group Change (SGC) Alarm Timer (Sec) field and set the SGCON Time
setting.
14-8 BE1-851 BESTCOMS™ Software 9289900990 Rev R