7-4 BE1-951 BESTlogic Programmable Logic 9328900990 Rev L
Table 7-1. Logic Variable Names and Descriptions
Variable
Name
Description
Variable
Name
Description
Inputs and Outputs
59XT 59 Auxiliary Overvoltage Tripped
IN1-IN4 Inputs 1 through 4 Status 59XPU 59 Auxiliary Overvoltage Picked Up
VOA Relay Trouble Alarm Output Status 159XT 159 Auxiliary Overvoltage Tripped
VO1-VO5 Virtual Outputs 1 through 5 (hardware outputs) 159XPU 159 Auxiliary Overvoltage Picked Up
VO6-VO15 Virtual Outputs 6 through 15
Over/Under Frequency
Controls
81T 81 Tripped
TRSTKEY HMI Target Reset Key 181T 181 Tripped
ARSTKEY HMI Alarm Reset Key 281T 281 Tripped
101T Virtual Breaker Control Switch Tripped 381T 381 Tripped
101C Virtual Breaker Control Switch Close 481T 481 Tripped
101SC Virtual Breaker Control Switch Slip Contact 581T 581 Tripped
62 62 Timer Output
Directional Power
162 162 Timer Output 32T 32 Tripped
43 Virtual Switch 43 Output 32PU 32 Picked Up
143 Virtual Switch 143 Output
Time Overcurrent
243 Virtual Switch 243 Output 51PT 51 Phase Overcurrent Tripped
343 Virtual Switch 343 Output 51PPU 51 Phase Overcurrent Picked Up
SG0 Setting Group 0 Active (default) 51NT 51 Neutral Overcurrent Tripped
SG1 Setting Group 1 Active 51NPU 51 Neutral Overcurrent Picked Up
SG2 Setting Group 2 Active 151NT 151 Neutral Overcurrent Tripped
SG3 Setting Group 3 Active 151NPU 151 Neutral Overcurrent Picked Up
Alarm and Monitor
51QT 51 Negative-Sequence Overcurrent Tripped
ALMLGC Logic Alarm 51QPU 51 Negative-Sequence Overcurrent Picked Up
ALMMAJ Major Alarm
Instantaneous Overcurrent
ALMMIN Minor Alarm 50TPT 50T Phase Tripped
OUT1MON Output 1 Monitor (circuit continuity) 50TPPU 50T Phase Picked Up
Reclosing
50TNT 50T Neutral Tripped
79C 79 Close Signal 50TNPU 50T Neutral Picked Up
79RNG 79 Running/Block Tap Changer 150TPT 150T Phase Tripped
79LO 79 Lockout 150TPPU 150T Phase Picked Up
79RST 79 Reset 150TNT 150T Neutral Tripped
79SCB 79 Sequence Control Block 150TNPU 150T Neutral Picked Up
Voltage
50TQT 50T Negative-Sequence Tripped
24T 24 Overexcitation Tripped 50TQPU 50T Negative-Sequence Picked Up
24PU 24 Overexcitation Picked Up 150TQT 150T Negative-Sequence Tripped
25 25 Sync-Check Output 150TQPU 150T Negative-Sequence Picked Up
25VM1 25 Voltage Monitor 1
Breaker Failure
25VM2 25 Voltage Monitor 2 BFT Breaker Failure Tripped
27PT 27 Phase Undervoltage Tripped BFPU Breaker Failure Picked Up
27PPU 27 Phase Undervoltage Picked Up
Fuse Loss
27XT 27 Auxiliary Undervoltage Tripped 60FL Loss of Potential Alarm
27XPU 27 Auxiliary Undervoltage Picked Up
Lockout Protection
47T 47 Negative-Sequence Tripped 86 86 Output
47PU 47 Negative-Sequence Picked Up 186 186 Output
59PT 59 Phase Overvoltage Tripped
59PPU 59 Phase Overvoltage Picked Up
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