GE Multilin 489, Руководство по связи

Страница: 69 / 78

489 GENERATOR MANAGEMENT RELAY – COMMUNICATIONS GUIDE 65
• 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.
CG.5.3 Binary / Frozen Counter (Objects 20/21)
Table CG–7: Counters Point List
INDEX ROLLOVER
POINT
DESCRIPTION
0 50000 Number of Breaker Operations
1 50000 Number of Thermal Resets
2 50000 Number of Trips (total)
3 50000 Number of Digital Input Trips
4 50000 Number of Sequential Trips
5 50000 Number of Field-Breaker Discrepancy Trips
6 50000 Number of Tachometer Trips
7 50000 Number of Offline Overcurrent Trips
8 50000 Number of Phase Overcurrent Trips
9 50000 Number of Negative Sequence Overcurrent Trips
10 50000 Number of Ground Overcurrent Trips
11 50000 Number of Phase Differential Trips
12 50000 Number of Undervoltage Trips
13 50000 Number of Overvoltage Trips
14 50000 Number of Volts/Hertz Trips
15 50000 Number of Phase Reversal Trips
16 50000 Number of Underfrequency Trips
17 50000 Number of Overfrequency Trips
18 50000 Number of Neutral Overvoltage (Fundamental) Trips
19 50000 Number of Neutral Undervoltage (Third Harmonic) Trips