Toshiba GR-200-5 Instruction Manual page 869

Counter value monitoring
10.3.4
The IED has the general counter function shown in
(→p. 787). The counter value monitoring is a function to monitor whether the value of a general
counter exceeds a specific value. If the value of the counter exceeds a specific value, the counter
value monitoring function issues an alarm.
Operation
(i)
Application
The general counter function has 32 counters from [COUNT1] to [COUNT32], whereas the
counter value monitoring monitors 4 counters from [COUNT1] to [COUNT4].
The specific values are defined by the settings "[CNK_CNT1:Set] for [COUNT1]" to
"[CNK_CNT4:Set] for [COUNT4]. For example, if the counter value of [COUNT1] exceeds the
setting value [CNK_CNT1:Set], the counter value monitoring issues an alarm.
Settings
Table 10.3-10 Setting for the counter value monitoring
Setting items
CNK_CNT1:Set
CNK_CNT2:Set
CNK_CNT3:Set
CNK_CNT4:Set
Error level
(ii)
Error level has been set at level 4 (Alarm; default), but the user can change it with settings
[CHK_CNT1:Lvl] to [CHK_CNT4:Lvl]. Remember that the user needs to set On setting
[CHK_CNT1:Sw] to [CHK_CNT4:Sw].
Error message
(iii)
When detecting an error, the error message will be shown on LCD screen. LED will be lit up.
Table 10.3-11 Error messages provided by the counter value monitoring (CHK_CNT)
Item
CNT1 error
CNT2 error
CNT3 error
CNT4 error
Error level
Table 10.3-12 Detailed information in the counter value monitoring (CHK_CNT)
Display
area
Top 00000001: counter value monitoring alarm is
row existing
Middle value of setting[CHK_CNT*:Set]
row (expressed in hexadecimal)
Bottom
(No information is displayed)
row
Range Unit
1 - 10000 - Threshold of counter-1 value monitoring
1 - 10000 - Threshold of counter-2 value monitoring
1 - 10000 - Threshold of counter-3 value monitoring
1 - 10000 - Threshold of counter-4 value monitoring
Meaning of the information
Detection of counter-1 value monitoring alarm
Detection of counter-2 value monitoring alarm
Detection of counter-3 value monitoring alarm
Detection of counter-4 value monitoring alarm
Alarm (Level 4)
Meaning of the detailed information
Left column
- 849 -
Chapter Monitoring function: Statics data
Contents
Right column
value of counter [COUNT*]
(expressed in hexadecimal)
(No information is displayed)
(No information is displayed)
6F2T0207 (0.01)
Default
10000
10000
10000
10000
GRE200 (5,6)