ABB 615 Series ANSI, Техническое руководство, Страница: 82 / 713

1MAC050144-MB C
Section 3
Basic functions
615 series ANSI 75
Technical Manual
Figure 10: Limit value supervision for RTD (130)
The range information of “High-high limit” and “Low-low limit” is combined from all
measurement channels to the Boolean ALARM output. The range information of “High
limit” and “Low limit” is combined from all measurement channels to Boolean
WARNING output.
Table 47: Settings for X130 (RTD) analog input limit value supervision
When the measured value exceeds either the Value maximum setting or the Value minimum
setting, the corresponding quality is set to out of range and a maximum or minimum value
is shown when the measured value exceeds the added hysteresis, respectively. The
hysteresis is added to the extreme value of the range limit to allow the measurement
slightly to exceed the limit value before it is considered as out of range.
3.10.10 Deadband supervision
Each input has an independent deadband supervision. The deadband supervision function
reports the measured value according to integrated changes over a time period.
Function Settings for limit value supervision
X130 (RTD) analog input Out of range Value maximum
High-high limit Val high
high
limit
Hight limit Val high limit
Low limit Val low limit
Low-low limit Val low low limit
Out of range Value minimum
AI_RANGE#=1
AI_RANGE#=3
AI_RANGE#=0
Hysteresis
Val high high limit
Val high limit
Val low limit
Val low low limit
AI_RANGE#=2
AI_RANGE#=4
Y
t
AI_RANGE#=0
Value Reported
Value maximum
Value minimum
Out of Range
*8,'$(&'$$%'''&9(1