YOKOGAWA WT210, User Manual, Page: 154 / 316

9-18
IM 760401-01E
Explanation
Comparator Display Function
This function allows you to verify the set limits together with measurement/computation data
on the display when using the comparator function. The display is as follows, depending on
whether the comparator function is set to single or dual mode.
• Display in case the comparator function is set to single mode
A
B
C
VA
var
TIME
PF
m
k deg
M %
V Hz
m
A k h
M W
V
A
W
h
1 2 3
Channel (Relay)
(Selectable from ch1 to ch4 by )
Unit prefix
(Illuminates as necessary in each display)
Unit
(One unit corresponding to relay
on display A illuminates. The unit V, A, or
W corresponding to the measured,
computed, or limit values shown on
displays B and C is illuminated.)
Input element
(One element corresponding
to relay on display A illuminates)
Limit value (Corresponding to the relay on display A)
Measured or computed data (Corresponding to the relay on display A)
• Display in case the comparator function is set to dual mode
A
B
C
VA
m
k var
M
TIME
PF
m
k deg
M %
V Hz
m
A k h
M W
V
A
W
V
A
W
h
1 2 3
*
*
*
Unit prefix
(Illuminates as necessary in each display)
Unit
(One unit corresponding to relay
on display A and B illuminates. The unit V,
A, or W corresponding to the measured,
computed, or limit values shown on
displays A, B, and C is illuminated.)
Input element
(One element corresponding
to relay on display A and B illuminates)
Limit value (Display the limit value of ch1
or ch3 by )
Measured or computed data (Corresponding to the relay on display A and B)
Limit value (Displays the limit value of ch2 or ch4 by )
The limit values on display A and B will show the pairs of ch1&ch2 and ch3&ch4 alternately by
pressing the keys. Check the displayed limit value, unit, or the limit value setting menu
to see which pair is being displayed,
Comparator Display Function ON/OFF
This setting allows you to turn the above described display function ON or OFF.
• oN: The comparator display will appear by pressing the ENTER key after selecting “on”;
• oFF: The normal measurement or harmonic measurement display will appear by
pressing the ENTER key after selecting “oFF.”
Note
• Pressing the FUNCTION or ELEMENT key will result in an error. Other keys can be operated.
• 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.
• Determination is done by internal data of the input signal, and not by displayed data. For
example, when the limit is set to 10.00 and the internal data of the input signal coming from a
lower value reaches 9.999, the relay will not be activated. Only when the internal data
reaches a value of 10.000, the relay will be activated.
9.7 Comparator Display (Option)