5-160 N60 Network Stability and Synchrophasor Measurement System GE Multilin
5.5 FLEXLOGIC 5 SETTINGS
5
The summator performs the following operation:
(EQ 5.8)
where: X represents the programmed input of summator N (determined by the SUMMATOR N INPUT1(6) settings);
S represents the programmed scale of summator N (determined by the SUMMATOR N SCALE 1(6) settings);
P represents the programmed position of summator N (determined by the SUMMATOR N POS1(6) settings).
The resulting Y value can be set as absolute or signed, allowing switching between the signed and absolute values of the
summator.
A user-programmable threshold is available to compare the Y value with a constant when driving the output operand:
(EQ 5.9)
where: Op is an output FlexLogic operand (for example, SUMMATOR 1 OP);
D is the user-programmable threshold (for example, SUMMATOR 1 PICKUP);
Y is the operating value derived earlier (for example, SUMMATOR 1 OUTPUT)
The Y value becomes a FlexAnalog parameter itself. As such, it can be used by other summators, FlexElements, and user-
programmable displays.
The settings for summator 1 are described below. The description applies to all six summators.
• SUMMATOR 1 FUNCTION: When set to “Enabled”, this setting allows summator functionality.
• SUMMATOR 1 INPUT MODE: This setting how the output data is formatted. When set to “Signed”, the sign (positive/
negative) of the input data summation remains intact. When set to “Absolute”, the absolute value of the summation is
used as the output value.
• SUMMATOR 1 HOLD: The output value to the summator is frozen when the FlexLogic operand assigned to this set-
ting is active (on).
• SUMMATOR 1 PICKUP: When the output value of the summator is greater than the value assigned to this setting, the
SUMMATOR 1 OP FlexLogic operand is activated (set to on).
• SUMMATOR 1 HYSTERESIS: When the output value of the summator falls below the SUMMATOR 1 PICKUP – SUMMA-
TOR 1 HYSTERESIS value, the SUMMATOR 1 OP FlexLogic operand is deactivated (set to off). For example, if the SUMMA-
TOR 1 PICKUP is “1.000” and the SUMMATOR 1 HYSTERESIS is “3.0%”, then the SUMMATOR 1 OP FlexLogic operand is set
to off when the resultant output value falls below 0.970.
• SUMMATOR 1 UNITS: This setting creates a character label for the summator output value display.
• SUMMATOR 1 PU BASE: This setting defines the per-unit base factor when using the SUMMATOR 1 OUTPUT FlexAn-
alog quantity in other N60 features, such as FlexElements. This value is used to normalize the SUMMATOR 1 OUTPUT
FlexAnalog quantity (that is, change it to a per-unit quantity). Refer to the FlexElements section for additional details on
per-unit base values.
• SUMMATOR 1 INPUT1(6): These settings select the FlexAnalog quantity to use as a summator input.
• SUMMATOR 1 SCALE1(6): These settings apply a scale factor to their corresponding FlexAnalog input quantity as it
is evaluated.
• SUMMATOR 1 POS1(6): These settings determines if a selected input is used during an evaluation of the summation
process. When the FlexLogic operand selected by this setting is activated (set to on), the summator will use the
SUM-
MATOR 1 INPUT
item multiplied by it's corresponding SUMMATOR 1 SCALE setting and apply it to the resultant output.
• SUMMATOR 1 EVENTS: This setting is used to generate events for the summator. The
SUMMATOR 1 OPERATE event
is created on the rising edge of the
SUMMATOR 1 OP FlexLogic operand.
YP
1
S
1
X
1
P
2
S
2
X
2
P
6
S
6
X
6
+++=
Op YD or Op abs Y D
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