Programmable DC Power Supply User’s Guide
13
accuracy of OVP setting impossible reach to output voltage, please make a allowance
during operation. Incorrect setting of OVP will lead to error action to power supply, or the
OVP does not work when voltage of power supply over the bearable voltage of load.
2.7.2 The using of sense function
S+ and S- terminals are used for sample the load voltage and stabilize it according to
sampled voltage parameters, to lower the voltage drop to minimum and ensure the load
voltage stability. Wire resistance is required less than 100mΩ, if too high, the wire
resistance and load capacitance make up a low-pass RC filter, taking phase lag to output
and lead to instability, also bring in interference.
When S+ and S- terminals connected to circuit (enable the sense function), please turn on
the sense function, otherwise the output voltage will get lower.
When S+ and S- terminals are idle (disable the sense function), please turn off the sense
function, otherwise the output voltage will get higher.
2.7.3 The requirement to AC power supply
For the high power of this unit, the transformer at power-on will get a short saturation and
periodic shock current, using the lighting air switch (C type release characteristic) may
cause switch trip at power-on. A dynamic air switch (D type release characteristic) is
advised for offer the AC power source, the capacitance of which should not less than 16A.
2.8 Basic Operation
2.8.1 Setting of output voltage
Method 1
: Use the number keys to set. Press
【
Volt
】
key, then enter voltage value by the
number keys on the front panel.
Press the key of
【
ENTER
】
to save the setting. So the
voltage value in the interface is the entered value.
For example
：
Set the voltage value to be 32.00V.
Press the keys of
【
Volt
】
【
3
】
【
2
】
【
.
】
【
0
】
【
0
】
【
0
】
【
ENTER
】
in turn.
Method 2
: Use the knob to set. Pressing the key of
【
RPG Enable
】
, and the voltage value
will be varied with the rotating of the knob. Press
【
RPG Coarse
】
key to change step.
2.8.2 Setting of output current
Method 1
: Use the number keys to set. Press
【
Curr
】
key, then enter current value by the
number keys on the front panel.
Press the key of
【
ENTER
】
to save the setting. So the
