21
5.
Operation
5.1
Inrush Current Limiting
5.
2
(PFC)
Power Factor Correction
5.
3
Output Voltage Adjustment
●
Built-in AC inrush current limiting circuit.
●
Since the inrush current limiting circuit mainly consists of a NTC
thermistor and a relay, inrush current will be much higher than the
specified value if the thermistor is not allowed sufficient time to
cool down. After turning off the supply, a 10 second cool down
period is recommended before turning on again.
●
Built-in active power factor correction (PFC) function, power factor
(PF) will be 0.98 or better at full load condition. PF will be less than
0.98 if it is not at full load condition.
●
Output voltage can be adjusted via SVR, PV or communication
interface.
A.
Have the DIP switch position-3 set as
B.
Output voltage can be trimmed by the SVRs T
.
he one on the top for
fine-tune, the other for coarse-tune, please refer to illustration
below.
5. .1
3
SVR
Figure
5 1
-
ON
OFF
1 2 3
(
)
coarse-tune
(
)
fine-tune
DIP SW1
5
22
A.
Have the DIP switch position-3 set as
B.Connect output of the external DC source to PV+ and
, as
-V(signal)
shown in Figure 5-2.
C.Relationship between output voltage and external DC source is
shown in Figure 5-3.
D.When increasing the output to a higher voltage level, please
reduce the loading current accordingly. Output wattage of the unit
should not exceed the rated value under any circumstance.
5.3.2 PV (Output Voltage Programming)
ON
OFF
1 2 3
(
)
coarse-tune
(
)
fine-tune
DIP SW1
LOAD
+V
-V
PIN3,4 PV+
PIN1,2 -V(Signal)
EXTERNAL VOLTAGE (DC)(0~5V)
Figure
5 2
-
EXTERNAL VOLTAGE (DC)
OUTPUT
VOL
TA
GE(%)
◎
The rated current should change with the
Output Voltage Programming accordingly.
◎
he 100% output voltage is 48/115/
T
216/334V.
OUTPUT
CURRENT
(%)
OUTPUT VOLTAGE
Figure
5 3
-
Non-Linear
100
40
60
70
80
83.3
20
V
103.5
300.6
194.4
57.5
115V
167
380V
108
230V
43.2
115
334
216
48
138
400
260
57.6
24
55V
50
100
120
Vout
0
1
4
4.41
4.37
V
4.7 4.8
113.7
114.5
106.5
380V(Default)
55V(Default)
230V(Default)
L type Blank type
5
