Monitored Data - ABB Relion Technical Manual

1MRK 502 048-UUS A
15.1.6
15.1.7
Technical manual

Monitored data

Table 452: PCGGIO Monitored data
Name Type
CNT_VAL INTEGER
SCAL_VAL REAL
Operation principle
The registration of pulses is done according to setting of CountCriteria parameter on one
of the 9 binary input channels located on the BIO module. 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 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 value is stored in semiretain memory.
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 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 time tagged, and transmitted
to the station HMI. This time corresponds to the time when the value was frozen by the
function.
The BLOCK and READ_VAL inputs can be connected to logics, which are intended to
be controlled either from the station HMI or/and the local HMI. As long as the BLOCK
signal is set, the pulse counter is blocked. The signal connected to READ_VAL performs
Values (Range) Unit
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Section 15
Metering
Description
Actual pulse counter value
Scaled value with time and
status information
631