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4.9.4 Operation counter
The TPOS01 function has an operation-counter†; the user can utilize the operation counter to
predict the lifespan of an EDS. The user can select a count mode in response to a device signal.
Table 4.9-22 and Figure 4.9-45 show the mode, for which a user is required to change a mode
in response to a device signal and the signal of the device such as the EDS. For instance of the
P1-control in the TPOS01 function, a user can select the mode using scheme switch [TPOS01-
P1CNTS], which is set to C-On; counting-up is performed when a switch-gear signal gives rise
to a change in state from “Open to Closing”.
Table 4.9-22 Mode of operation counter
Counting-up is performed when a signal changes to closed (ON). When the signal
is changed from “Open to Closed”, the counter value is incremented.
Counting-up is performed when a signal changes to open (OFF). When the signal
is changed from “Closed to Open”, the counter value is incremented.
Counting-up is made when any state change occurs: “Open to Closed” and
“Closed to Open”.
†Note: The operation-counter value is not cleared when power is removed from the IED.
This counter is available in the TPOS01 to TPOS03 functions.
Figure 4.9-45 Device signal
The user can change the value of the operation-counter from either the front panel or
remotely. For example, in the sub-menu for “Operation counter”, the user can set a user-
preferred value for the operation-counter. See Chapter
User interface: Monitoring sub-menu
on how to operate the sub-menu.
TPOS1-CNT
10:48 1/4
TPOS_Dev1-All +
0
TPOS_Dev1-P1 +
0
TPOS_Dev1-P2 +
Operation Counter
10:48 1/3
_TPOS1-CNT >
TPOS2-CNT >
TPOS3-CNT >
Figure 4.9-46 Operation counter sub-menu
Note: With regard to the signal “TPOS01_ST_P1”, the sub-menu represents it as
“TPOS_Dev1-P1”. Analogous to the signal “TPOS01_ST_P1”, the signals
“TPOS01_ST_P2” and “TPOS01_ST_P3” are represented as “TPOS_Dev1-P2” and
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