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3-6 For First Time Users PLZ-4W
3.3 Operating area of the PLZ-4W
As shown in Fig. 3-3, the PLZ-4W can be used within the area enclosed by the con-
stant voltage line according to the rated voltage (L1), the constant power line
according to the rated power (L2), the constant current line according to the rated
current (L3), and the constant voltage line according to the minimum operating volt-
age (L4) (operating area where specifications are guaranteed). For PLZ-4Ws with
the minimum operating voltage of 0 V, the specifications are guaranteed at input
voltages at 0 V and greater. For 1.5 V input types, the specifications are guaranteed
at input voltages of 1.5 V and greater. If the current is decreased, these types can be
used even at voltages lower than 1.5 V. However, the specifications are not guaran-
teed. (Actual operating area)
Minimum voltage at which the current starts flowing to the PLZ-4W is approxi-
mately 0.3 V.
The PLZ-4W detects no signal at an input voltage less than or equal to approxi-
mately 0.3 V and an input current less than or equal to approximately 1 % of the
range rating. If the input voltage is gradually increased from 0 V, no current will
flow until 0.3 V is exceeded. Once a current greater than or equal to 1 % of the
range rating (When PLZ-4W is set by the M range: greater than or equal to 1 % of H
range) starts flowing, the current can flow at voltages less than equal to 0.3 V.
If the minimum operating voltage (L5) in the actual operating area is reached, the
operating status on the display indicates C.R using outline characters (see section
4.4, "Display”).
Fig. 3-3 Operating area
PLZ164W
(1.5 V input type)
H range
PLZ164WA
(0 V input type)
H range
0.1
1
10
100
0.1 1 10
Input current [A]
Input voltage [V]
Actual operating area
165 W
150
5
1.5
0.3
1.1 33
Logarithmic
scale
Operating area where
specifications are
guaranteed
L1
L2
L3
L5
L4
L5
0
0.5
0.3
1
0 10
Input current [A]
Input voltage [V]
Operating area where
specifications are
guaranteed
33
1.5
2.0
1.3
20 30
Actual operating area
L3
L4
Low voltage area
Low voltage area
<1.5 V
Logarithmic
scale
0.1
0.3
1
10
100
0.1 1 10
Input current [A]
Input voltage [V]
Operating area where
specifications are
guaranteed
165 W
150
5
1.1 33
L1
L2
L3
L4
0
0.5
0.3
1
0 10
Input current [A]
Input voltage [V]
Operating area where
specifications are
guaranteed
33
1.5
2.0
20 30
L3
Low voltage area