ABB RELION 670 Series Technical Manual page 1106

Section 16
Monitoring
ACC_HOUR output represents the accumulated time in hours and the ACC_DAY output
The
represents the accumulated time in days.
tAlarm and tWarning are user settable time limit parameters in hours. They are also independent
of each other, that is, there is no check if
tAddToTime is a user settable time parameter in hours.
tAlarm , tWarning and tAddToTime are possible to be defined with a resolution of 0.1 hours (6
minutes).
The limit for the overflow supervision is fixed at 99999.9 hours. The outputs will reset and the
accumulated time will reset and pickup from zero if an overflow occurs.
16.10.6.1 Operation accuracy
The accuracy of TEILGAPC depends on essentially two factors
• the pulse length
• the number of pulses, that is, the number of rising and falling flank pairs
In principle, more pulses may lead to reduced accuracy.
16.10.6.2 Memory storage
The value of the accumulated time is retained in a non-volatile memory,
• at every falling edge of the input
• at every even 6 minutes, after a rising edge of the input
• after a manual addition of time
Consequently in case of a power failure, there is a risk of losing the difference in time between
actual time and last time stored in the non-volatile memory.
16.10.7 Technical data
Table 797: TEILGAPC Technical data
Time limit for alarm supervision,
tAlarm
Time limit for warning supervision,
tWarning
Time limit for overflow supervision
1100
Function
(0 - 99999.9) hours
(0 - 99999.9) hours
Fixed to 99999.9 hours
tAlarm > tWarning .
IN
IN
Range or value
1MRK 502 066-UUS B
GUID-B6FBEFD7-17C8-41C6-B5D5-32E1205E6752 v1
GUID-B49698FF-0AB2-4792-A7CB-5534313B6CA0 v2
GUID-F5E124E3-0B85-41AC-9830-A2362FD289F2 v1
Accuracy
±0.1% of set value
±0.1% of set value
±0.1%
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