Operation Accuracy - ABB Relion Technical Manual

1MRK 502 048-UUS A
13.9.6.1
13.9.6.2
13.9.7
Technical manual
tAlarm and tWarning are user settable limits. They are also independent, that is, there is
no check if tAlarm > tWarning.
tAlarm and tWarning are possible to be defined with a resolution of 10 ms, depending on
the level of the defined values for the parameters.
tOverflow is for the overflow supervision with a default value tOverflow = 999 999.9
seconds. The outputs freeze if an overflow occurs.

Operation Accuracy

The accuracy of TEIGGIO depends on essentially three factors
• task cycle time
• the pulse length
• the number of pulses, that is the number of rising and falling flank pairs
In principle, a shorter task cycle time, longer integrated time length or more pulses may
lead to reduced accuracy.
Memory storage
The value of the integrated elapsed time is retained in a non-volatile memory, only if any
warning, alarm or/and overflow occurs. Consequently there is a risk of data loss in the
integrated time at a power failure.
Technical data
Table 344: TEIGGIO Technical data
Function
Elapsed time integration 5
20
100
Cycle time (ms) Range or value
0 ~ 999999.9 s
0 ~ 999999.9 s
0 ~ 999999.9 s
Section 13
Logic
Accuracy
±0.05% or ±0.01 s
±0.05% or ±0.04 s
±0.05% or ±0.2 s
505