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4.8.4 Operation counter
The DPOS01 function has an operation-counter†; the user can utilize the operation-counter to
predict the lifespan of switchgear and other functions. The user can select a count mode using
a setting. Table 4.8-22 and Figure 4.8-32 show the modes, for which a user is required to change
a mode in response to a device signal. For instance for the DPOS01 function, a user can select
the mode using scheme switch [DPOS01-CNTS], which is set to C-On; counting-up is performed
when a switchgear signal gives rise to a change in state from “Off to On”.
Table 4.8-22 Mode of operation counter
Counting-up is performed when a signal changes to closed (On). When the signal
is changed from “Off to On”, the counter value is incremented.
Counting-up is performed when a signal changes to open (Off). When the signal
is changed from “On to Off”, the counter value is incremented.
Counting-up occurs when any state change occurs: that is, “Off to On” or “On to
Off”.
†Note: The operation-counter value is not cleared when power is removed from the IED.
The operation-counter is available in the DPOS01 to DPOS72 functions.
Figure 4.8-32 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
.
DPOS1-CNT1
10:48 1/4
DPOS_Dev1-3Ph +
0
DPOS_Dev1-APh +
0
DPOS_Dev1-BPh +
Operation Counter
10:48 1/25
DPSY1-CNT >
DPSY2-CNT >
_DPOS1-CNT >
DPOS2-CNT >
DPOS3-CNT >
DPOS4-CNT >
Figure 4.8-33 Operation counter sub-menu
Note: With regard to signal “DPOS01_3PH_STATE”, the sub-menu represents it as
“DPOS_Dev1-3Ph”. Analogous to the signal “DPOS01_3PH_STATE”,
“DPOS01_APH_STATE” is represented as “DPOS_Dev1-APh”. Signals
“DPOS01_BPH_STATE” and “DPOS01_CPH_STATE” are displayed in a similar
manner.
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