ABB Relion REG670, Техническое руководство

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17.1.6 Monitored data
Table 713: PCFCNT Monitored data
Name Type Values (Range) Unit Description
CNT_VAL INTEGER - - Actual pulse counter
value
SCAL_VAL REAL - - Scaled value with time
and status information
17.1.7 Operation principle
The registration of pulses is done for positive transitions (0-
>
1) on one of the 16 binary
input channels located on the Binary Input Module (BIM). Pulse counter values are
sent to the station HMI with predefined cyclicity without reset.
The reporting time period can be set in the range from 1 second to 60 minutes and is
synchronized with absolute system time. Interrogation of additional pulse counter
values can be done with a command (intermediate reading) for a single counter. All
active counters can also be read by the LON General Interrogation command (GI) or
IEC 61850.
Pulse-counter logic (PCFCNT) 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. PCFCNT 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 logic function requires a binary input card, BIMp,
that is specially adapted to the pulse-counter logic function.
Figure 454 shows the pulse-counter logic function block with connections of the
inputs and outputs.
1MRK502052-UEN B
Section 17
Metering
983
Technical manual