User Manual
A high resolution display with a resolution about 2.6-fold higher than Yokogawa’s previous
model
*
is employed. More setting information and measurement data can be displayed.
M
easurement
d
ata can
b
e
di
sp
l
aye
d
on a s
i
ng
l
e screen,
alon
g
with the respective detailed settin
g
in
f
ormation o
f
6
inputs, such as a voltage range, current range,
s
ynchronization source, wiring system, and filter. You do
not need to switch dis
p
la
y
screens
f
re
q
uentl
y
to con
f
irm
the settings
.
Wi
t
h
t
h
e
WT
1800, t
h
e
d
ata up
d
ate rate can
b
e se
l
ecte
d
f
rom 9 o
p
tions
f
rom the
f
astest data u
p
date rate o
f
50 ms
to an update rate of 20 s for low-speed measurements.
F
or example, i
f
you want to save the avera
g
e data at a
1
-minute interval and ina
pp
ro
p
riatel
y
set the u
p
date rate
of 50 ms, measurement results may be not correct
b
ecause
d
ata can
b
e save
d
on
l
y at a 1-m
i
nute
i
nterva
l
(
once every 20 times)
.
S
uch a risk can be avoided by setting the update rate that
i
s su
i
te
d
to t
h
e
i
nterva
l
at w
hi
c
h
you want to save
d
ata.
T
he setting ranges of voltage and current are
usua
ll
y
di
sp
l
aye
d
w
i
t
h
vo
l
tage an
d
current s
i
gna
l
l
eve
l
s t
h
at are
i
n
p
ut to t
h
e
p
ower ana
ly
zer
.
T
he WT1800
p
rovides not onl
y
this direct dis
p
la
y
b
ut a
l
so a
dd
e
d
a new computat
i
on range
di
sp
l
ay
f
unction to the external current sensor ran
g
e.
T
his function allows
y
ou to dis
p
la
y
the
p
rimar
y
current range for the voltage output type current
s
ensor.
I
t a
ll
ows you to
i
ntu
i
t
i
ve
l
y set a ran
g
e t
h
at
is suited to the primary measurement signal
l
eve
l.
A null function allows you to reset the offset
va
l
ue to zero
i
n t
h
e connecte
d
state.
P
rev
i
ous
l
y,
all in
p
uts could onl
y
be collectivel
y
set to ON or
O
FF. With the WT1800, the null value for each
input can be set to
O
N, H
O
LD, or
O
FF.
I
n a motor evaluation test, the o
ff
set value
f
or
only a particular input can be reset to zero. This
m
akes it
p
ossible to
p
er
f
orm a more accurate
mo
t
o
r
e
v
a
l
ua
ti
o
n t
es
t.
D
isplay the manual on the screen
F
requently used
f
unctions
(
keys
)
can be
p
er
f
ormed without the instruction manual.
Y
ou may, however, want to use a new
f
unction durin
g
evaluation. The WT1800
in
c
l
udes
a
bu
ilt-in in
s
tr
uc
ti
o
n m
a
n
ua
l
o
n th
e
functions, so if a new operation is required,
you can read the explanation o
f
the
f
unction
o
n th
e
sc
r
ee
n
.
The data saving function of the WT Series is
capable of continuously savin
g
data for a lon
g
period o
f
time. However, to check an irre
g
ular
event, data must be retrieved using spreadsheet
s
oftware.
The event tri
gg
er
f
unction allows you to set the
high and low limits and only trigger data that
f
alls into or out of that range to be saved.
Individual null function
F
unct
i
on to reset only a part
i
cular
i
nput s
i
gnal to zero
*
C
omparison with Yoko
g
awa’s previous model WT1600
Computation range display
D
irect dis
p
la
y
o
f
p
rimar
y
current value
s
User-defined event function
C
a
p
ture onl
y
a
p
articular event
Help function
D
i
splay the manual on the screen
A lot of information can be
displayed on a single screen
Data update rate changeable
All Data of 6-input, Single/Three-phase Devices can be Viewed on a
Single Screen
Important Information is Displayed in a Concentrated Format on
High Resolution 8.4-inch XGA Display
All Data of 6-input, Single/Three-phase Devices can be Viewed on a
Single Screen
Important Information is Displayed in a Concentrated Format on
High Resolution 8.4-inch XGA Display
Functions/Displays
Functions/DisplaysFunctions/Displays
urement
E
n
g
li
s
h
h
e
l
p menu supports meas
Dis
p
la
y
exam
p
le of
d
irect input ran
g
e
Display example of
c
omputation ran
g
e
Innovative
function
Innovative
function
Innovative
function
Innovative
function
Innovative
function
Innovative
function
New functionNew function
4