5
3.5
Output Voltage/Current Adjustmen
3.5.1
General adjustment
Output voltage can be trimmed by adjusting SVR (
), please utilize an insulated cross-head screwdriver to
on the terminal end
make an adjustment.
3.5.2
Adjustment with an external 0 - 5Vdc source (Output Voltage Programming)
(1)
Connect output of the external DC source to PV (PIN5 or PIN6) and -V (PIN1) on CN55, shown in Figure 3-1.
(2)
Relationship between output voltage and external DC source is shown in Figure 3-2.
(3)
While increasing the output to a higher voltage level, please reduce the load current accordingly. Output wattage of the
unit should not exceed the rated value under any circumstances.
Figure 3-1 Connection of external DC voltage source
PV
5,6
1
0~5V
-V
Figure 3-2
Note
:
The PHP-3500 will trigger OLP to shut down itself if the output stays at constant current level condition for more than
5 seconds.
3.5 3
.
Output current adjustment (Output Current Programming)
※
Constant current level can be adjusted within a range of 20 -100% of the rated current via an external DC source, wiring
is shown as below.
External voltage
(DC)
Relationship between output current and external DC source is shown as below.
+V
-V
PHP-3500
LOAD
PC
CN55 -V Signal
EXTERNAL
VOLTAGE
3,4
1
OUTPUT
VOL
TA
GE(%)
20
OUTPUT
CURRENT(%)
100
110
Iout
0
External voltage
(VDC)
0.4
1
4.7
V
4.8
Non-Linear
50
100
120
Vout
0.4
0
1
4.7
V
4.8
Non-Linear
◎
The rated current should change with the output voltage
programming accordingly.
90
95
100
120
100
40
60
80
20
OUTPUT VOLTAGE (%)
50
OUTPUT
CURRENT
(%)