active counters can also be read by the LON General Interrogation command (GI) or
IEC 61850.
Pulse counter (PCGGIO) function in the IED supports unidirectional incremental
counters. That means only positive values are possible. The counter uses a 32 bit
format, that is, the reported value is a 32-bit, signed integer with a range
0...+2147483647. The counter is reset at initialization of the IED.
The reported value to station HMI over the station bus contains Identity, Scaled Value
(pulse count x scale), Time, and Pulse Counter Quality. The Pulse Counter Quality
consists of:
•
Invalid (board hardware error or configuration error)
•
Wrapped around
•
Blocked
•
Adjusted
The transmission of the counter value by SPA can be done as a service value, that is,
the value frozen in the last integration cycle is read by the station HMI from the
database. PCGGIO updates the value in the database when an integration cycle is
finished and activates the NEW_VAL signal in the function block. This signal can be
connected to an Event function block, be time tagged, and transmitted to the station
HMI. This time corresponds to the time when the value was frozen by the function.
The pulse counter function requires a binary input card, BIMp, that is
specially adapted to the pulse counter function.
shows the pulse counter function block with connections of the inputs and
outputs.
Section 16
1MRK505222-UUS C
Metering
984
Technical reference manual
Summary of Contents for Relion 670 series
Page 1: ...Relion 670 series Line differential protection RED670 ANSI Technical reference manual...
Page 2: ......
Page 40: ...34...
Page 50: ...44...
Page 60: ...54...
Page 126: ...120...
Page 384: ...378...
Page 496: ...490...
Page 556: ...550...
Page 602: ...596...
Page 620: ...614...
Page 794: ...788...
Page 864: ...858...
Page 988: ...982...
Page 998: ...992...
Page 1084: ...1078...
Page 1164: ...1158...
Page 1168: ...1162...
Page 1220: ...1214...
Page 1230: ...1224...
Page 1231: ...1225...