YOKOGAWA WT210, User Manual, Page: 151 / 316

9-15
IM 760401-01E
External In/Output Function
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.
• Selecting the relay
Selects the relay for assigning the type of limit from Ch1 to ch4.
• Selecting the type of limit (correspons 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 only the same type of limit can be selected 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), AFrq (current frequency), 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
*
), Ah– (negative ampere hour value
*
), – – – – – – (no data)
* For details concerning the positive value of the ampere hour, refer to page 6-3.
• Selecting the element (corresponds to column B in the procedure)
• WT210 (760401) no such element setting available;
• WT230 (760502) element can be selected from 1, 3, or 4
• WT230 (760503) element can be selected from 1, 2, 3, or 4
The element number 4 represents
Σ
.
• Setting the limit value
No element setting is available on the WT210.
Setting range: 0.000 to
±
9999
Initial setting:
ch1 : V (type) : 1 (element) : 600.0 (value) : E+0 (exponent) [ 600 V voltage
limit of element 1 for channel 1]
ch2 : A (type) : 1 (element) : 20.00 (value) : E+0 (exponent) [ 20.00 A current
limit of element 1 for channel 2]
ch3 : P (type) : 1 (element) : 1.200 (value) : E+3 (exponent) [ 1.2 kW active
power limit of element 1 for
channel 3]
ch4 : PF (type) : 1 (element) : 1.000 (value) : E+0 (exponent) [ Power factor 1
limit of element 1 for channel 4]
• Selecting 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 Measurement
You can set the type of the limit and its value for each relay seperately.
• Selecting the relay
Selects the relay (ch1 to ch4) for which the type of limit and its value will be set.
• Selecting the type of limit (corresponds 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 only the same type of limit can be selected 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 details on the meaning of harmonic measurement values, see chapter 7.
9.6 Setting the Comparator Limit Values (Option)