Basler BE1-CDS220, Instruction Manual

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BE1-CDS220 Application 8-13
Table 8-8. BASIC-TX Function Block Logic
Function Purpose
BESTlogic
Expression
Mode Setting
87
Used for percent-restrained differential protection with high-speed
unrestrained instantaneous differential protection.
0 1 (Enabled)
51N
Used for timed ground-overcurrent protection for independent
ground input circuit.
0 G (Ground Input)
151P Used for timed phase-overcurrent protection for CT input circuit 1. 0 1 (CT Input 1)
151N Used for timed neutral-overcurrent protection for CT input circuit 1. 0 1 (CT Input 1)
151Q
Used for timed negative sequence-overcurrent protection for CT
input circuit 1.
0 1 (CT Input 1)
GROUP
Auto/Manual Logic: Set to 1 (/0) to enable automatic selection. No
manual selection is used.
/0
1 (Discrete
Inputs)
251P Used for timed phase-overcurrent protection for CT input circuit 2. 0 2 (CT Input 2)
251N Used for timed neutral-overcurrent protection for CT input circuit 2. 0 2 (CT Input 2)
251Q
Used for timed negative sequence-overcurrent protection for CT
input circuit 2.
0 2 (CT Input 2)
Table 8-9. BASIC-TX Virtual Switch Logic
State Labels
Switch Purpose Mode Label
Closed Open
N/A No virtual switches used. N/A N/A N/A N/A
Table 8-10. BASIC-TX Output Logic
State Labels
Output Purpose Description Label
True False
VOA Relay Trouble alarm.
OUTA contact closes when relay
trouble alarm occurs.
RELAY-TROU ACTIVE NORMAL
BESTlogic Expression: VOA=0
VO1
Phase differential trip. OUT1
is a high-speed trip contact. OUT1 contact closes if restrained
or unrestrained trip occurs.
87TRIP-OUT TRIP NORMAL
BESTlogic Expression: VO1=87RT+87UT
VO2 Phase differential trip.
OUT2 contact closes if restrained
or unrestrained trip occurs.
87TRIP-OUT TRIP NORMAL
BESTlogic Expression: VO2=87RT+87UT
VO3 Phase differential trip.
OUT3 contact closes if restrained
or unrestrained trip occurs.
87TRIP-OUT TRIP NORMAL
BESTlogic Expression: VO3=87RT+87UT