ABB 615 Series - Analog Data Scaling; Fault Record Timestamp

Table 7: Default Class assignment for analog input data
Point index Name/description Default deadband Default change event
assigned class (1, 2, 3 or
none)
See the point list manual. Configurable IED setting 2
3.2.3.1 Analog data scaling
The four scaling options associated with analog input data reporting are None, Ratio,
Multiplicative and Divisor. The selection None means that no scaling is performed
on the source IEC 61850 value. The value is reported as such to DNP.
Ratio, multiplicative and divisor scaling methods
The PCM600 tool contains four value arguments related to the scaling methods:
sourceMinVal, sourceMaxVal, destMinVal and destMaxVal. The use of these
arguments differs depending on the scaling method.
The ratio, multiplicative and divisor scaling methods use the first two arguments,
souceMinVal and sourceMaxVal, to define the source value range inside which the
object is to be used. The complete value range of the object is usually wanted even
though the user could freely define the source range.
Arguments three and four, destMinVal and destMaxVal, define the destination value
range. In ratio scaling, arguments destMinVal and destMaxVal define the
corresponding range of the scaled, reported DNP value.
DNPvalue
sourceValue sourceMinVal
destMaxVal destMinVal
=
−
( )
×
−
( ))
−
( )








+
sourceMinVal sourceMaxVal
destMinVal
GUID-9F985816-2268-412A-AE24-ED90EAC44AD7 V1 EN (Equation 1)
In multiplicative scaling, argument four destMaxVal becomes a scale constant and
argument three destMinVal becomes an offset.
DNPvalue sourceValue destMaxVal destMinVal= × +
( )
GUID-4CB1987F-BDD8-48A2-9389-20B0B2EB271F V1 EN (Equation 2)
In divisor scaling, argument four destMaxVal becomes a scale constant and argument
three destMinVal becomes an offset.
DNPvalue
sourceValue
destMaxVal
destMinVal= +






GUID-01F26415-274B-4844-B861-DB7D6E56D91B V1 EN (Equation 3)
3.2.3.2 Fault record timestamp
When a new fault occurs, the fault number (LD0.FLTMSTA1.OpCnt.stVal)
increments, and it is stored in the DNP AI event buffer. Other points associated with
1MRS756709 A Section 3
Vendor-specific implementation
615 series 17
Communication Protocol Manual