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TDK-Lambda
ZWS10
・
15B
・
30B Series
Instruction Manual
ZWS10B, ZWS15B
ZWS30B
6. Wiring Method
(1)
The output load line and input line shall be separated each other and twisted individually to improve noise.
(2)
Use all lines as thick and short as possible to made lower impedance.
(3)
Noise can be reduced by attaching a capacitor to the load terminals.
(4)
For safety and EMI considerations, connect between
terminal of input connector and Frame Ground terminal of equipment firmly.
7. External Fuse Rating
Refer to the following fuse rating when selecting the external fuses that are to be used on input line. Surge current flows when line turns on.
Have to use slow-blow or time-lag type fuse, not fast-blow fuse. Fuse rating is considered by in-rush current value at line turn-on. Do not
select the fuse according to input current (RMS.) values under the actual load condition
ZWS10B, ZWS15B: 2.0A
ZWS30B: 3.15A
8. Before concluding that the unit is at fault
(1)
Check if the rated input voltage is connected.
(2)
Check if the wiring of input and output is correct.
(3)
Check if the wire thickness is enough.
(4)
Check if the output current and output wattage dose not over specification.
(5)
Check if the output voltage control (V.ADJ) is properly adjusted. OVP might be triggered and output is shut down.
(6)
Audible noise can be heard when input voltage waveform is not sinusoidal wave.
(7)
Audible noise can be heard during Dynamic-Load operation.
(8)
Ensure that a large capacitor is not connected on the output side. Please use within maximum capacitance shown below.
Maximum external capacitance
MODEL
3.3V
5V
12V
15V
24V
ZWS10B
10,000uF
10,000uF
2,000uF
1,400uF
300uF
ZWS15B
10,000uF
10,000uF
2,500uF
1,000uF
500uF
ZWS30B
10,000uF
10,000uF
2,700uF
1,500uF
600uF
9. Altitude
The clearance in power supply can meet 3000m altitude of IEC60664-1.
