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5.7 INPUTS/OUTPUTS
•
DIRECT ANALOG 1 DEFAULT: This setting specifies the value of direct analog input 1 when the associated direct
device is offline and the
offline and the default mode is set to "Last Known", the value of direct analog input 1 remains at the last received value.
This value is stored as an IEEE 754 / IEC 60559 floating-point number. Because of the large range for this setting, not
all values can be stored – some values may be rounded to the closest possible floating point number.
•
DIRECT ANALOG 1 UNITS: This setting provides a four-character string that is used in the direct analog input 1 actual
values display.
•
DIRECT ANALOG 1 PU: This setting defines the per-unit base factor when using the
FlexAnalog™ value in other N60 features, such as FlexElements™. This value is used to normalize the direct analog
input 1 FlexAnalog™ quantity to its per-unit base. Refer to the FlexElements™ section for additional details on per-unit
base values.
d) APPLICATION EXAMPLE
Direct analog input FlexAnalog parameters (the
in other N60 functions that use FlexAnalog parameters.
The
DIR ANA 1 INTEGRITY
to
FORCED
DIR ANA 32 FORCED
operand can be active (logic 1) at any time. If a direct device is offline, all of the associated trigger operands will be inactive
(logic 0).
The following figure illustrates the operation of the direct analogs feature.
In this example, UR-1 is configured to use four out of its 32 analog channels. These four values are selected from two
sources. UR-2 is configured to receive two out of the four analog values sent, and UR-3 is set to receive three values. Note
that
is effectively being received at both UR-2 and UR-3.
SRC 2 FREQ
5
5-180
DIRECT ANALOG 1 DEFAULT MODE
DIR ANALOG INPUT 1
to
DIR ANA 32 INTEGRITY
FlexLogic™ operands are provided to indicate the most recent trigger condition: Only one
UR-1
SRC1 P
SRC1 PF
Pool of
FlexAnalog
SRC2 FREQ
parameters
SRC1 V1 Mag
UR-2
Remote Analog 7
Pool of
FlexAnalog
parameters
Remote Analog 3
UR-3
Remote Analog 2
Pool of
FlexAnalog
Remote Analog 3
parameters
Remote Analog 9
Figure 5–86: DIRECT ANALOGS SAMPLE APPLICATION
N60 Network Stability and Synchrophasor Measurement System
is set to "Default Value". When the associated direct device is
to
DIR ANALOG INPUT 32
,
to
DIR ANA 1 DEADBAND
DIR ANA 32 DEADBAND
UR-1 is configured to send four
Analog Out 1
analog values as outputs 1, 2, 3,
and 4, respectively.
Analog Out 2
Analog Out 3
Analog Out 4
TX
RX
UR-2 is configured to receive
Analog In 7
SRC1 P
UR-1 as direct analog inputs 7
and 3, respectively.
Analog In 3
TX
RX
UR-3 is configured to receive
SRC1 PF SRC2 FREQ
SRC1 V1 Mag
Analog In 2
direct analog inputs 2, 3, and 9,
Analog In 3
respectively
Analog In 9
5 SETTINGS
DIRECT ANALOG INPUT 1 ACTUAL
values) are available for use
, and
DIR ANA 1
SRC2 FREQ
and
from
,
, and
from UR-1 as
847007A1.CDR
GE Multilin
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