YOKOGAWA WT200 User Manual page 101

9.6 Setting the Comparator Limit Values (optional)
9-14
• Setting the harmonic order (corresponds to column B in the procedure)
Setting range: 01 to 50
Initial value: see the following.
The maximum order of harmonic analysis data varies by the fundamental
frequency. Therefore, there might be cases where no analysis data are present up
to the 50th order (and the display will show bars). In such a case, even if you set
an harmonic order, determination will not be carried out. Therefore, before setting,
verify the maximum order (chapter 16 "Specifications") and the fundamental
frequency of the object of measurement.
• Setting the limit value
Setting range: 0.000 to ±9999
Initial setting: The limit item: analysis order: limit value: exponent of the limit value
(see next section) are initialized for each channel.
ch1 : V1 : 01 : 600.0 : E+0 (set 600 V of voltage of the fundamental component to ch1)
ch2 : A1 : 01 : 20.00 : E+0 (set 20.00 A of current of the fundamental component to ch2)
ch3 : P1 : 01 : 1.200 : E+3 (set 1.2 kW of active power of the fundamental component to
ch4 : PF1 : 01 : 1.000 : E+0 (set a power factor of 1 of the fundamental component to ch4)
• Setting the exponent
The following selections are available. The initial value is as described above.
–3
E–3 (10 ), E+0 (10
Note
• The values of V (voltage), A (current), W (active power), VA (apparent power), var (reactive
power), Vpk (voltage peak), and Apk (current peak), while the MAX hold function (see section
4.8) is enabled will be displayed, according to the maximum values (MAX) that are held. The
values that are compared against the limit values are also the maximum values (MAX) that
are held.
• When you use limit values based on harmonic analysis data, make sure to set the harmonic
analysis function to ON (see section 9.8) before you set the comparator function ON .
• Although the four relays used in case of normal measurement and in case of harmonic
analysis are the same, the contents of the settings will be kept for both seperately. For
example, even after setting a limit for ch1 in case of harmonic analysis after previously having
set a limit for ch1 in case of normal measurement, will result in keeping both values.
• The determination method does not change as a result of – (minus) limit values. For
example, if a limit of –1 is set, the relay will not be activated when the input signal value
reaches –2 coming from an even lower value, but will be activated when the input signal
value becomes 0.
• Make sure to set the polarity of the phase angle as well, + for phase lead (and can be
ignored), – for phase lag.
ch3)
0 3 6
), E+3 (10 ), E+6 (10 )
IM 253421-01E