15
LCD/LED display 1 shows the output current and display LCD/LED 2 the
output
voltage.
If display LCD/LED 2 shows 3.2A and the CC LED constant current
mode 4 flashes on, the
device is overloaded
or
there is a
short-
circuit
.
3. Check the load and all test leads.
4.3
Short-Circuit Identification
1. Switch off the power supply.
2. Turn the control dials 3, 4, 12 and 13 to maximum.
3. First switch on the power supply, then the load.
3.2 Ampere is displayed at LCD/LED display 2 and LED constant current
mode flashes on.
If
0.0V
is displayed at
LCD/LED display 1
, load is
short-circuit
.
If
another value
is shown, the device is
overloaded
.
Avoid this situation!
4.4 Operating as a constant current source
1. Turn on the power supply unit with separated or switched off load by
mains
switch
6.
2. Turn the voltage regulators 12 and 13 clockwise completely on.
3. Turn current regulators 3 and 5 counterclockwise completely off.
4. Connect the load or turn it on.
5. Use the regulators 3 and 5 to adjust the current.
The constant current display (CC ) shines.
4.5 Operating as a constant voltage source
1. Turn on the power supply unit with separated or switched off load by
mains
switch
6.
2. Turn on the current regulators 3 and 5 clockwise.
3. Turn off the voltage regulator 12 and 13 in counterclockwise
direction.
4. Connect the appropriate variable load or turn it on.
5. Use the voltage regulators 12 and 13 for adjusting the voltage.
The constant voltage display (CV) shines.
4.6
Current limitation
When used as a constant voltage source, the output current control is set to
maximum in general. The current may be further limited for specific
applications by the corresponding channel is shorted and the current limit
value
is
set.
