Basler BE1-CDS220, Instruction Manual

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BE1-CDS220 Application 8-15
The control switch elements are referred to as virtual because they have no physical form. They exist only
in logic form and can only be operated via the ASCII command interface or the front panel HMI. The virtual
101 switch is used to trip and close the transformer low-side breaker. Virtual control switches 43 and 143
are used to trip and close the transformer high-side breaker. Virtual control switch 243 turns off the 87
protection element and 343 selects whether the setting group control is automatic or manual.
Figure 8-5 is a one-line drawing and Figure 8-6 is a logic drawing that represents the logic settings shown
in Table 8-11. In Table 8-11, the user can see the protection and control elements that are enabled for the
TX-W-CTL application and how the elements are logically wired together (equations). If the user should
decide to build on this scheme, all elements required for a more detailed application are available through
programming. For programming details, refer to Section 7, BESTlogic Programmable Logic.
52-1
86T
T
ri
p
Cl
os
e
Out3
CT Input 1
Out5
Out1
Out2
51N 87
CT Input G
(Optional)
Out4
CT Input 1
Cu
tof
f
CT Input 2
52-2
101
Cl
os
e
T
rip
T C
Auto/Manual
BE1-CDS220
D2843-20.vsd
09-21-00
CT Input 2
151P 151N 151Q
251P 251N 251Q
Group
Control
343
143
43
243
Figure 8-5. Typical One-Line Diagram for TX-W-CTL