Instructions

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TDK-Lambda
GWS 2 50 Series
INSTRUCTION MANUAL
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) 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.
(7) Check if the output current and output wattage does not exceed the specification.
(8) Audible noise may be heard when input voltage waveform is not sinusoidal.
(9) Audible noise may be heard during dynamic load operation.
(10) Ensure that a large capacitor is not connected across the output terminals. Please use within maximum
capacitance shown below.
Maximum external capacitance
MODEL 12V 24V 36V 48V
GWS250 10,000uF 5,000uF 1,000uF
10. Warranty Condition
This product is under warranty for 5 years (based on 24 hours/day operation) from the date of shipment. During the
warranty period, TDK-Lambda will, at it’s option, either repair or replace products prove to be defective.
Warranty applies but not limited to the following.
(1) Average operating temperature (ambient temperature of the power supply unit) is under 40
o
C.
(2) Average load factor is 80% or less.
(3) Installation method : Standard installation.
Following cases are not covered by warranty.
(1) Improper usage and mis-handling like dropping or applying shock to the unit and defects from operation
exceeding specification of the product.
(2) Defects resulting from natural disaster (fire, flood).
(3) Unauthorized modification or repair.