ABB Relion 670 Series Technical Reference Manual page 935

1MRK505222-UUS C
15.2.3
15.2.3.1
15.2.3.2
Technical reference manual
Principle of operation
Event counter (CNTGGIO) has six counter inputs. CNTGGIO stores how many times
each of the inputs has been activated. The counter memory for each of the six inputs is
updated, giving the total number of times the input has been activated, as soon as an
input is activated.
To not risk that the flash memory is worn out due to too many writings, a mechanism
for limiting the number of writings per time period is included in the product. This
however gives as a result that it can take long time, up to several minutes, before a new
value is stored in the flash memory. And if a new CNTGGIO value is not stored before
auxiliary power interruption, it will be lost. CNTGGIO stored values in flash memory
will however not be lost at an auxiliary power interruption.
The function block also has an input BLOCK. At activation of this input all six
counters are blocked. The input can for example, be used for blocking the counters at
testing.The function block has an input RESET. At activation of this input all six
counters are set to 0.
All inputs are configured via PCM600.
Reporting
The content of the counters can be read in the local HMI.
Reset of counters can be performed in the local HMI and a binary input.
Reading of content can also be performed remotely, for example from a IEC 61850
client. The value can also be presented as a measuring value on the local HMI
graphical display.
Design
The function block has six inputs for increasing the counter values for each of the six
counters respectively. The content of the counters are stepped one step for each
positive edge of the input respectively.
The function block also has an input BLOCK. At activation of this input all six
counters are blocked and are not updated. Valid number is held.
The function block has an input RESET. At activation of this input all six counters are
set to 0.
Section 15
Monitoring
929