ABB 615 Series - Page 125

GUID-63CA9A0F-24D8-4BA8-A667-88632DF53284 V1 EN
Figure 32: Integral deadband supervision
The deadband value used in the integral calculation is configured with the Value
deadband setting. The value represents the percentage of the difference between the
maximum and minimum limits in the units of 0.001 percent * seconds. The reporting delay
of the integral algorithms in seconds is calculated with the formula:
t s
Y
( )
( )
=
− ⋅Value maximum Value minimum
deadband
s
100000
∆
GUID-CC447162-C1B4-4E74-A253-828F388266EB V2 EN (Equation 3)
Example of X130 (RTD) analog input deadband supervision
Temperature sensor Pt100 is used in the temperature range of 15...180 °C. Value unit
“Degrees Celsius” is used and the set values Value minimum and Value maximum are set
to 15 and 180, respectively.
Value deadband = 7500 (7.5% of the total measuring range 165)
AI_VAL# = AI_DB# = 85
If AI_VAL# changes to 90, the reporting delay is:
t s( )
( )
.=
° − ° ⋅
° − °
≈
180 15
7500
100000
90 85
2 5
C C
%s
s
C C
s
GUID-F47EF6B6-9A14-44A2-AD19-BC067E4A7D78 V3 EN (Equation 4)
Table 55: Settings for RTD analog deadband supervision
Function
Setting Maximum/minimum (=range)
RTD analog input Value deadband Value maximum / Value minimum
(=20000)
1MAC059074-MB A Section 3
Basic functions
615 series ANSI 119
Technical Manual