Matsusada R4G Series, Инструкция по эксплуатации

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4 Normal Operation
15
R4G/R4GE series
4 Normal Operation
4-1
Operating Mode Description
R4G/R4GE series power supply units have two operation modes (constant voltage mode and constant
current mode).
Here describes each mode.
The operation mode is determined with the following parameters.
Output voltage setting value
：
V
set
Output current set value
：
I
set
Load resistance
：
R
L
4-1-1
Constant Voltage (CV) Mode
When the load current I
L
is lower than the setting value I
set
(I
L
<I
set
; I
L
=V
set
/R
L
), the unit operates in
CV mode.
In CV mode, the voltage will be constant at the set value ( V
set
) and the load current I
L
varies
depending on the load.
When using the unit in CV mode, set a current value larger than the required current value with the
current setting dial.
A required voltage can be set unless it does not exceed the set current value.
4-1-2
Constant Current (CC) Mode
When the load current I
L
is greater than the setting value I
set
(I
L
>I
set
), the unit operates in CC mode.
In CC mode, the current will be constant at the set value (I
set
) and the load voltage varies depending
on the load.
R
L
＝
Load resistance
V
set
＝
Output voltage set value
I
set
＝
Output current set value
4-1-3
Crossover Mode
In response to changes in load response, the crossover system automatically switches the unit
operating mode.
For example, in CV mode, if the load fluctuates and the current exceeds the current set value, it
automatically switches from CV mode to CC mode. In CC mode, when the load fluctuates and the
load voltage exceeds the set value, it automatically switches from CC mode to CV mode.
Output Voltage
Vset
Constant voltage region
R
L ＞
R
L
＝
R
L
＜
Iset
Output Current
Crossover point
Constant current region
Vset
Iset
0
Vset
Iset
Vset
Iset