9-13
IM 253421-01E
Using External Input/Output
9
Explanation
Setting the Comparator Limit Values in case of Normal Measurement
You can set the type of the limit and its value for each relay seperately.
• Relay setting
Selects the relay (ch1 to ch4) for which the limit item and its value will be set.
• Setting the limit item
The following sections are available. When the comparator mode is dual, ch1&ch2
and ch3&ch4 are pairs and the same limit item should be set for the channels of
one pair.
V (voltage), A (current), P (active power), VAr (reactive power), VA (apparent
power), PF (power factor), VFrq (voltage frequency)
*1
, AFrq (current frequency)
*1
,
Ph (total Watt-hour Wh), Ah (total Ampere-hour), dEG (phase angle), VP(peak
value of voltage), AP(peak value of current), MATH(computation), Ph+ (positive
watt hour value Wh+), Ph– (negative watt hour value Wh–), Ah+ (positive ampere
hour value
*2
), Ah– (negative ampere hour value
*2
),
– – – – (no data)
*1 If either one of the display functions, V Hz or A Hz, is turned on, the frequency of
the corresponding function is output. If both functions are turned OFF, the frequency of
the function that was lighted last will be output.
*2 For details related to the positive and negative directions of the ampere hour, see page
6-3.
• Setting the limit value
Setting range: 0.000 to
±
9999
Initial setting: The limit item: limit value: exponent of the limit value (see next
section) are initialized for each channel.
ch1 : V1 : 600.0 : E+0 (set 600 V of voltage to ch1)
ch2 : A1 : 20.00 : E+0 (set 20.00 A of current to ch2)
ch3 : P1 : 1.200 : E+3 (set 1.2 kW of active power to ch3)
ch4 : PF1 : 1.000 : E+0 (set a power factor of 1 to ch4)
• Setting the exponent
The following selections are available. The initial value is as described above.
E–3 (10
–3
), E+0 (10
0
), E+3 (10
3
), E+6 (10
6
)
Setting the Comparator Limit Values in case of Harmonic Analysis
You can set the type of the limit and its value for each relay seperately.
• Relay setting
Selects the relay (ch1 to ch4) for which the limit item and its value will be set.
• Setting the limit item(corresponding to column A in the procedure)
The following selections are available. When the comparator mode is dual,
ch1&ch2 and ch3&ch4 are pairs and the same limit item should be set for the
channels of one pair.
V (voltage), A (current), P (active power), PF (power factor),
Vt (harmonic distortion of voltage), At (harmonic distortion of current),
CV (relative harmonic content of each voltage harmonic order),
CA (relative harmonic content of each current harmonic order),
CP (relative harmonic content of each active power harmonic order),
Vd (voltage phase angle of each order), Ad (current phase angle of each order),
– – – – (no data)
*
For the meanings of the harmonic analysis values, see chapter 7, “Using the Harmonic
Analysis Function (Optional).”
9.6 Setting the Comparator Limit Values (optional)
