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communication I/O functions (MVGGIO) are provided with measurement
supervision functionality. All measured values can be supervised with four settable
limits: low-low limit, low limit, high limit and high-high limit. The measure value
expander block has been introduced to enable translating the integer output signal
from the measuring functions to five binary signals: below low-low limit, below low
limit, normal, above high-high limit or above high limit. The output signals can be
used as conditions in the configurable logic or for alarming purpose.
3.9.3
Operation principle
The input signal must be connected to a range output of a measuring function block
(CMMXU, RESCMMXU, RESVMMXU, VPHMMXU, VPPMMXU,
PWRMMXU, CSMSQI, VSMSQI or MVGGIO). The function block converts the
input integer value to five binary output signals.
Table 32:
Input integer value converted to binary output signals
Output
Measured supervised value
below low-low
limit
between low‐
low and low
limit
between low
and high limit
between high-
high and high
limit
above high-
high limit
LOWLOW
High
LOW
High
NORMAL
High
HIGH
High
HIGHHIGH
High
3.9.4
Application
The current and voltage measurement functions (CMMXU, RESCMMXU,
RESVMMXU, VPHMMXU, VPPMMXU and PWRMMXU), current and voltage
sequence measurement functions (CSMSQI and VSMSQI) and IEC 61850 generic
communication I/O functions (MVGGIO) are provided with measurement
supervision functionality. All measured values can be supervised with four settable
limits: low-low limit, low limit, high limit and high-high limit. The measure value
expander block (MVEXP) has been introduced to enable translating the integer output
signal from the measuring functions to five binary signals: below low-low limit,
below low limit, normal, above high-high limit or above high limit. The output signals
can be used as conditions in the configurable logic or for alarming purpose.
3.9.5
Signals
Table 33:
MVEXP Input signals
Name
Type
Default
Description
RANGE
INTEGER
0
Measured value range
Section 3
1MRS757256 F
Basic functions
66
PML630/Compact Load-Shedding Solution
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