15
Fig. 6
Note : If the load is remote, oscillation might happen due to inductance and capacitance of
the output line. In such a case, connect an electrolytic capacitor of some 100
μ
F in
parallel with the load as shown above.
7-3. Remote Control of Constant-voltage (Resistance, voltage)
---------- Precautions When Using Remote Control -----------
This unit adopts the floating circuit system. It has terminals isolated from the frame and
controls output power on the basis of the positive (+) output terminal.
To control the constant voltage and constant current settings using external voltage,
connect the positive (+) output terminal and GND terminal on the front panel as follows.
The GND and positive (+) terminals should be connected with the short bar (as shown
above) or open (as shown below) :
Note : In case of output voltage or current control by external voltage, the negative side of
the external voltage line is connected to the (+S) terminal (GND level of the analog
control circuit inside of the unit) side.
Use floated external voltage circuit from any conductive materials against output
potential of the main unit in a floating condition to prevent accidents or
malfunctioning. In case of using plural number of power supplies with external
＋
＋Ｓ
－
－Ｓ
Load
Two core shield
+
（Note）
×
×
GND
＋
－
Load
Short bar
＋
－
Load
GND
