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Signal acquisition timing must be adjusted in accordance with the application, in that the
acquisition should be regulated for the nature of the signal; hence, several settings are
provided in the GCNT functions. Thirty-two independent GCNT counters† are available. That
is, counters GCNT01 to GCNT32† can operate simultaneously. The values counted are stored
in the non-volatile memory so that they are not erased if the power supply to the IED is
interrupted.
For simplicity, only the GCNT01 function is discussed; the features in the remaining GCNT02–
GCNT32 functions are identical to the GCNT01 function.
Counter setting for a signal
3.5.1
Setting for count timing
(i)
In the GCNT01 function count timing is grouped into three, as shown in Figure 3.5-2 (a, b, and
c). When the user wishes to count the On(Closed), set On for the scheme switch [GCNT01-
CNTS]; conversely, set Off for the scheme switch when the Off(Open) is to be counted.
Additionally, OnOff is provided for counting the number of pulses. If the GCNT01 function is
not required, set NA for the scheme switch.
Setting the maximum value
(ii)
The GCNT01 function is able to count to 2147483647 (=2
the value "2147483647", the count-value returns to an initial-value. If the user wishes to set a
different maximum number in place of "2147483647", the user can use the setting [GCNT01-
a. On (Closed) signals
"On" is counted on the rising edge of the pulse
Counter
1
2
...
b. Off (Open) signals
"Off" is counted on the falling edge of the pulse
Counter
1
2
c. OnOff (Closed-Open) signals
"OnOff" is counted in response to pulses.
Counter
1
2
...
Figure 3.5-2 Count types
- 380 -
n
...
...
n
...
n
...
−1). When the count-value reaches
31
6F2T0207 (0.01)
GRE200 (5,6)
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