¡
When power consumption is measred, please measure it by average
mode. The value is changed by environment.
1.10 Remote ON/OFF
¡
Option -R is available to provide a remote ON/OFF function.
Please see ”5. Option and Others” for details.
1.11 Remote Sensing
¿
PLA100F, PLA150F, PLA300F
¡
These models do not have this function.
¿
PLA600F
¡
Option -W is available to provide a remote sensing function.
Please see ”5. Option and Others” for details.
1.12 LV Alarm
¿
PLA100F, PLA150F, PLA300F
¡
These models do not have this function.
¿
PLA600F
¡
Option -W is available to provide an alarms function. Please see
”5. Option and Others” for details.
2
Series Operation and
Parallel Operation
2.1 Series Operation
¡
You can use a power supply in series operation. The output cur-
rent in series operation should be lower than the rated current of a
power supply with the lowest rated current among power supplies
that are serially connected. Please make sure that no current ex-
ceeding the rated current fl ows into a power supply.
Load
Power
Supply
+
-
+
-
Power
Supply
Load
Load
Power
Supply
+
-
+
-
Power
Supply
Fig.2.1 Examples of connecting in series operation
1.6 Output Ripple and Ripple Noise
¡
Output ripple noise may be infl uenced by measurement environ-
ment, measuring method Fig.1.2 is recommended.
+Vout
-Vout
Load
150mm
C
2
C
1
Osiloscope/
Ripple noise meter
Bw:20MHz
Differential probe
+
C
1 :
Film capacitor 0.1
μ
F
C
2 :
Aluminum electrolytic capacitor 22
μ
F
Fig.1.2 Measuring method of Ripple and Ripple Noise
Remarks :
When GND cable of probe with fl ux of magnetic force from power
supply are crossing, ripple and ripple noise might not measure
correctly.
Please note the measuring environment.
Bad example
Good example
Fig.1.3 Example of measuring output ripple and ripple noise
1.7 Output Voltage Adjustment
¡
To increase an output voltage, turn a built-in potentiometer clock-
wise. To decrease the output voltage, turn it counterclockwise.
¡
When output voltage is adjusted, it should be turned slowly.
¿
PLA300F, PLA600F
¡
We are offering an Option -V, which doesn’t have a built-in poten-
tiometer but instead enables you to adjust the output voltage by
using an external potentiometer (please see 5 Option and Others).
1.8 Isolation
¡
For a receiving inspection, such as Hi-Pot test, gradually increase
(decrease) the voltage for the start (shut down). Avoid using Hi-
Pot tester with the timer because it may generate voltage a few
times higher than the applied voltage, at ON/OFF of a timer.
1.9 Low Power Consumption
¿
PLA100F, PLA150F
¡
Low power consumption function is built-in in PLA100F and PLA150F.
(No load power consumption: 1.5W typ)
¡
In 0 to 30% load, switching power loss is reduced by burst operation.
By this function, ripple and ripple noise specifi cation are changed.
¡
Ripple and ripple noise are changed by used condition. Please con-
tact us about detail.
AC-DC Power Supplies Enclosed type
Instruction Manual
PLA-13
PLA
me̲pla1.indd PLA-13
me pla1 indd PLA-13
2014/03/04 10:34:42
2014/03/04 10:34:42
