Binary / Frozen Counter (Objects 20/21 - GE 489 Communications Manual

CG.5.3 Binary / Frozen Counter (Objects 20/21)
489 GENERATOR MANAGEMENT RELAY – COMMUNICATIONS GUIDE
• A Status of "Control Operation not Supported for this Point" (4) will be returned if an
attempt was made to operate the point and the relay, owing to its configuration,
does not allow the point to perform its function.
An operate of the Reset point may fail (even if the command is accepted) due to other
inputs or conditions (e.g., blocks) existing at the time. To verify the success or failure of an
operate of this point it is necessary that the associated Binary Input(s) be examined after
the control attempt is performed.
When using object 10 to read the status of any Binary Output, a value of zero will always
be returned. This is due to the fact that all points are "Pulse On" and are deemed to be
normally off.
INDEX ROLLOVER
POINT
0 50000
1 50000
2 50000
3 50000
4 50000
5 50000
6 50000
7 50000
8 50000
9 50000
10 50000
11 50000
12 50000
13 50000
14 50000
15 50000
16 50000
17 50000
18 50000
19 50000
Table CG–7: Counters Point List
DESCRIPTION
Number of Breaker Operations
Number of Thermal Resets
Number of Trips (total)
Number of Digital Input Trips
Number of Sequential Trips
Number of Field-Breaker Discrepancy Trips
Number of Tachometer Trips
Number of Offline Overcurrent Trips
Number of Phase Overcurrent Trips
Number of Negative Sequence Overcurrent Trips
Number of Ground Overcurrent Trips
Number of Phase Differential Trips
Number of Undervoltage Trips
Number of Overvoltage Trips
Number of Volts/Hertz Trips
Number of Phase Reversal Trips
Number of Underfrequency Trips
Number of Overfrequency Trips
Number of Neutral Overvoltage (Fundamental) Trips
Number of Neutral Undervoltage (Third Harmonic) Trips
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