GE N60 Instruction Manual page 446

INPUTS/OUTPUTS
The direct analogs feature allows the transmission of analog values between any two UR-series relays supporting the
feature. The communication channel is the same as that used for the direct inputs and outputs feature. When the direct
inputs/outputs and direct analog features are used together on the same channel, the UR-series relays must be using
firmware version 5.20 or higher.
The settings for direct analog input 1 are as follows. The description applies to all 32 direct analog inputs.
DIRECT ANALOG 1 DEVICE ID
the device programmed in this setting.
DIRECT ANALOG 1 NUMBER
input 1 is driven by the input programmed in this setting. This setting value corresponds to the direct analog output
number of the sending device.
DIRECT ANALOG 1 DEFAULT
offline and the
DIRECT ANALOG 1 DEFAULT MODE
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 can be rounded to the closest possible floating point number.
DIRECT ANALOG 1 UNITS
values display.
DIRECT ANALOG 1 PU
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. See the FlexElements section for additional details on per-unit base values.
5.9.7.4 Application example
Direct analog input FlexAnalog parameters (the
5
other N60 functions that use FlexAnalog parameters.
The
DIR ANA 1 INTEGRITY
FlexLogic operands are provided to indicate the most recent trigger condition: Only one operand can be active
32 FORCED
(logic 1) at any time. If a direct device is offline, all of the associated trigger operands are inactive (logic 0).
The 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
3.
5-286
— This value selects the source of the direct analog 1 input. Direct analog input 1 is driven by
— This value specifies which input to extract the value for the direct analog 1 input. Direct analog
— This setting specifies the value of direct analog input 1 when the associated direct device is
is set to "Default Value." When the associated direct device is offline and
— This setting provides a four-character string that is used in the direct analog input 1 actual
— This setting defines the per-unit base factor when using the
DIR ANALOG INPUT 1
to
DIR ANA 32 INTEGRITY, DIR ANA 1 DEADBAND
N60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL
DIRECT ANALOG INPUT 1 ACTUAL
to values) are available for use in
DIR ANALOG INPUT 32
to DEADBAND, and
DIR ANA 32
is effectively being received at both UR-2 and UR-
SRC 2 FREQ
CHAPTER 5: SETTINGS
to
DIR ANA 1 FORCED DIR ANA