14
TDK-Lambda
LS 200 Series
INSTRUCTION MANUAL
8. Fan Life Expectancy.
The fan life has limitation. Following figure shows the life expectancy of fan against temperature.
Measurement point of fan exhaust temperature
9. Before concluding that the unit is at fault…
Please make the following checks.
(1) Check if the rated input voltage is connected and within specification.
(2)
Check if the wiring of input and output is correct.
(3)
Check if the I/O terminal connection is properly tighten by required torque.
(4)
Check if the wire thickness is enough.
(5)
Check if the output voltage trimmer (V.ADJ) is properly adjusted. OVP might be triggered and output is
shutdown.
(6)
Check if the built-in fan is operating. Is fan stopped or blocked by something?
(7)
Power supply has ventilating holes in front and the back. Check if there is any blockage or dust, etc.
(8)
Is the chassis of power supply abnormally hot? The output is shutdown by OTP operation.
Please disconnect or turn off the AC input and let the unit cool down sufficiently before turning ON the AC
input again.
(9)
Check if the output current and output wattage does not exceed the specification.
(10)
Audible noise may be heard when input voltage waveform is not sinusoidal.
(11)
Audible noise may be heard during dynamic load operation.
(12)
Ensure that a large capacitor is not connected across the output terminals. Please use within maximum ca-
pacitance shown below.
Maximum external capacitance
MODEL 3.3V 5V 7.5V 12V
15V
24V
36V
48V
LS200 10,000uF
5,000uF
1,000uF
Air Flow
P.S.
50m
Temperature
measurement point
F
R
ONT
SI
DE
