INSTRUCTION MANUAL
ZWP350-1000 Series
TDK-Lambda
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8. Wiring Method
(1) The input and output wiring should be separated from each other and twisted individually.
This is to improve noise sensitivity.
(2) All input and output wiring should be as thick and short as possible to achieve 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 protective earth
terminal firmly.
(5) Use AWG#22
–
AWG#16 wire for the input line and output load line.
9. The life Expectancy
The life of power supply depends on the lifetime of build-in aluminium electrolytic capacitor and it is
described in reliability data. The lifetime of aluminium electrolytic capacitor varies depending on the
mounting direction, the load current and the ambient temperature of power supply. Refer to “Electrolytic
Capacitor Lifetime” in reliability data. If power supply is used over the life expectancy, there is a risk of
unexpected output shutdown and specification might not satisfied.
Please contact to TDK-Lambda for maintenance or exchange the product.
10. External Fuse Rating
Refer to the following fuse rating when selecting the external fuse that is to be used on input line. Surge
current flows when line turns on. Slow-blow or time-lag type fuse is required to use. Fast-blow fuse cannot
use. 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.
ZWP350-1000 : 16A
11. 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 size is not too thin.
(4) Check if the output current and output power are within specification.
(5) Check if the output voltage control (V.ADJ) is correctly adjusted.
(6) Check if the remote ON/OFF control connector is not opened.
(7) Audible noise can be heard when input voltage waveform is not sinusoidal wave.
(8) Audible noise can be heard during dynamic load operation.
(9) Ensure that large capacitor is not connected on output side.
The maximum external capacitance is shown below.
12. Warranty Period
This product is warranted for a period of 5 years from the date of shipment. For damage occurred during
normal operation within this warranty period, repair will be free of charge.
24V
30V
36V
48V
10,000uF
8,750uF
7,500uF
5,000uF
Maximum external capacitor
