Kikusui PLZ-30F, Operation Manuals

Page: 162 / 192

A-2 Appendix PLZ-U
A.2 Basic Operation Modes
The following fi ve operation modes are available on the PLZ-U.
1. Constant current mode (CC mode)
2. Constant resistance mode (CR mode)
3. Constant voltage mode (CV mode)
4. Constant current and constant voltage mode (CC+CV mode)
5. Constant resistance and constant voltage mode (CR+CV mode)
A.2.1 Operation of the CC Mode
In CC mode, the current is kept constant even when the voltage changes.
■
CC mode operation
When the PLZ-U is used in CC mode, the PLZ-U operates as a constant current load
as shown in Fig. A-2. The PLZ-U supplies the speci
fi ed current (I) independent of
the output voltage of the constant-voltage power supply (V1).
Fig. A-2 Equivalent circuit of the constant current load and operation
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Transition of the operating point: Overpower protection (OPP)
We will consider the case when checking the load characteristics of the constant-
voltage power supply of Fig. A-3 using CC mode.
PLZ-U Series
I
V
Constant voltage
power supply
Current is constant even when
the voltage changes
Input current I
Input voltage V
0
I
V
1
5 10 (A)