4–38 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
DEVICE CHAPTER 4: SETPOINTS
Path: Setpoints > Device > Communications > DNP/IEC104 Point Lists > Analog Input / MME
Points
Analog IP Point 0 Entry
Point 0 Scale Factor
Point 0 Deadband
DNP ANALOG INPUT POINT 0(31) SCALE FACTOR
Range: / 0.001, / 0.01, / 0.1, / 1, / 10, / 100, / 1000, / 10000, / 100000
Default: /1
These are numbers used to scale analog input point values. Each setting represents the
scale factor for the analog input point. For example, if the DNP PHASE A VOLTAGE SCALE
FACTOR setting is set to “/ 1000”, and the Phase A voltage is 72000 V, the Phase A voltage
is sent on to the 889 as 72. The settings are useful when analog input values must be
adjusted to fit within certain ranges in DNP masters.
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Note that a scale factor of ”/ 0.1” is equivalent to a multiplier of 10.
DNP ANALOG INPUT POINT 0(31) DEADBAND
Range: 1 to 100000000 in steps of 1
Default: 30000
The setting is the threshold value to define the condition to trigger unsolicited responses
containing analog input data. Each setting represents the default deadband value for
the associated analog input. For example, to trigger unsolicited responses from the
889 when phase A current changes by 15 A, the DNP CURRENT DEADBAND for Phase A
current should be set to “15”. Note that these settings are the deadband default values.
DNP object 34 points can be used to change deadband values from the default for each
individual DNP analog input point. Whenever power is removed and re-applied to the
889 the new deadbands are in effect.
The binary output points for the DNP protocol, or the CSC/CDC points for IEC 60870-5-104
protocol, can be configured to a maximum of 16 points. The data source for each point is
user-programmable and can be configured by assigning FlexLogic operands. The menu
path for the binary output points (DNP) or CSC/CDC points (IEC 60870-5-104) is shown
below.
Path: Setpoints > Device > Communications > DNP/IEC104 Point Lists > Binary Output /
CSC/CDC Points
Binary Output Point 0 ON
Binary Output Point 0 OFF
...
Binary Output Point 15 ON
Binary Output Point 15 OFF
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The DNP / IEC 60870-5-104 point lists always begin with point 0 and end at the first “Off”
value. Since DNP / IEC 60870-5-104 point lists must be in one continuous block, any points
assigned after the first “Off” point are ignored.
BINARY INPUT POINTS
The DNP binary input data points are configured through the DNP / IEC104 POINT LISTS
BINARY INPUT / MSP POINTS menu. When a freeze function is performed on a binary
counter point, the frozen value is available in the corresponding frozen counter point.
BINARY INPUT POINTS
Static (Steady-State) Object Number: 1
Change Event Object Number: 2
Request Function Codes supported: 1 (read), 22 (assign class)
Static Variation reported when variation 0 requested: 2 (Binary Input with status),
Configurable
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