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2.37
Analog Outputs
2.37.1 Functional Description
2.37.2 Setting Hints
General
Measured Values
7UM62 Manual
C53000-G1176-C149-3
Depending on the variant ordered, the 7UM62 machine protection can have up to four
analog outputs (plug-in modules on ports B and D). The values to be transmitted via
these interfaces have been specified during the configuration of the scope of
protection functions (see Section 2.2). A maximum of four of the following analog
outputs are available.
• Measured positive sequence current I
• Measured negative sequence current I
• Measured positive sequence voltage U
• Measured value |P| (absolute value of active power) in percent of the rated
operational apparent power √3·U
• Measured value |Q| (absolute value of reactive power) in percent of the rated
operating apparent power √3·U
• Measured value frequency f in percent of the nominal frequency,
• Measured value |cosϕ| (absolute value of power factor) in percent, referred to 1.00,
• Measured value rotor temperature Θ
permissible rotor temperature,
• Measured value stator temperature Θ
temperature.
Operating nominal quantities are the nominal values set at addresses 0251 UN GEN/
MOTOR and 0252 SN GEN/MOTOR (see also Section 2.3).
For measured values that can be negative (power, power factor), absolute values are
formed and output.
Analog values are output as load-independent currents. The analog outputs have a
nominal range between 0 mA and 20 mA, their operating range can be up to 22.5 mA.
The conversion factor and the scope of validity are set.
You have specified during the configuration of the analog outputs (Section 2.2,
addresses 0173 through 0176) which of the analog inputs available will be used for
what measured values. Set Disabled if a function is not needed. The other
parameters associated to that analog output are masked out in that case.
If you have selected measured values for the analog outputs (Section 2.2, addresses
0173 through 0176), you specify for the available outputs the conversion factor and
the range of validity; these are
in percent of the rated operational current;
1
in percent of the rated operational current;
2
in percent of the rated voltage;
1
·I
,
N
N
·I
,
N
N
/Θ
in percent of the maximum
R
R max
/Θ
in percent of the tripping
S
S TRIP
Analog Outputs
239
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