TDK-Lambda DRJ120 Series, DRJ240 Series, DRJ240, DRJ120, DRJ120/E Instruction Manual

TDK-Lambda

DRJ120, 240 Series

INSTRUCTION MANUAL

DRJ120, 240 Series

Instruction Manual

BEFORE USING THE POWER SUPPLY UNIT (Common)

Be sure to read this instruction manual thoroughly before using this product. Pay attention to all cautions
and warnings before using this product. Incorrect usage could lead to an electrical shock, damage to the unit
or a fire hazard.

DANGER

Never use this product in locations where flammable gas or ignitable substances are present.

INSTALLATION WARNING

• When installing, ensure that work is done in accordance with the instruction manual. When installation is
improper, there is a risk of electric shock and fire.

• Installation shall be done by Service personnel with necessary and appropriate technical training and
experience. There is a risk of electric shock and fire.

• Do not cover the product with cloth or paper etc. Do not place anything flammable around. This might
cause damage, electric shock or fire.

WARNING on USE

• Do not touch this product or its internal components while circuit in operation, or shortly after shutdown.
You may receive a burn.

• While this product is operating, keep your hands and face away from it as you may be injured by an
unexpected situation.

• There are cases where high voltage charge remains inside the product. Therefore, do not touch even if
they are not in operation as you might get injured due to high voltage and high temperature.

You might also get electric shock or burn.

• Do not make unauthorized changes to this product nor remove the cover as you might get an electric
shock or might damage the product. We will not be held responsible after the product has been modified,
changed or dis-assembled.

• Do not use this product under unusual condition such as emission of smoke or abnormal smell and sound
etc. Please stop using it immediately and shut off the product.

It might lead to fire and electric shock. In such cases, please contact us. Do not attempt repair by yourself,

as it is dangerous for the user.

• Do not operate and store these products in environments where condensation occurs due to moisture and
humidity. It might lead fire and electric shock.

• Do not drop or apply shock to this product. It might cause failure. Do not operate these products
mechanical stress is applied.

CAUTION on MOUNTING

• Confirm connections to input/output terminals are correct as indicated in the instruction manual before
switching on.

• Input/output lines, please use the wires as short and thick as possible.

• Do not use this product in special environment with strong electromagnetic field, corrosive gas or
conductive substances and direct sunlight, or places where product is exposed to water or rain.

• Mount this product properly in accordance with the instruction manual, mounting direction and shall be
properly be ventilated.

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TDK-Lambda

DRJ120, 240 Series

• Please shut down the input when connecting input and output of the product.

• When installing in environment where conductive foreign, dust and liquid may be present,

please consider penetration of above foreign material in the power supply by installing filter, to prevent

trouble or malfunction.

CAUTION on USE

• Product individual notes are shown in the instruction manual. If there is any difference with common

notes, individual notes shall have priority.

• Before using this product, be sure to read the catalog and instruction manual. There is a risk of electric

shock or damage to the product or fire due to improper use.

• Input voltage, Output current, Output power, ambient temperature and ambient humidity should be kept

within specifications, otherwise the product will be damaged, or cause electric shock or fire.

• If the built-in fuse is blown, do not use the product even after replacing the fuse as there is a risk of

abnormality inside. Be sure to request repair to our company.

• For products without built-in protection circuit (element, fuse, etc.), insert fuse at the input to prevent

smoke, fire during abnormal operation.
As for products with built-in protection circuit, depending on usage conditions, built-in protection circuit
might not work. It is recommended to provide separate proper protection circuit.

• For externally mounted fuse do not use other fuses aside from our specified and recommended fuse.

• This product was made for general purpose electronic equipment use and is not designed for applications

requiring high safety (such as extremely high reliability and safety requirements. Even though high
reliability and safety are not required, this product should not be used directly for applications that have
serious risk for life and physical safety). Take sufficient consideration in fail-safe design (such as
providing protective circuit or protective device inside the system, providing redundant circuit to ensure
no instability when single device failure occurs).

• When used in environments with strong electromagnetic field, there is possibility of product damage due
to malfunction.

• When used in environment with corrosive gas (hydrogen sulfide, sulfur dioxide, etc.), there is possibility
that they might penetrate the product and lead to failure.

• When used in environments where there is conductive foreign matter or dust, there is possibility of
product failure or malfunction.

• Provide countermeasure for prevention of lightning surge voltage as there is a risk of damage due to
abnormal voltage.

• Connect together the frame ground terminal of the product and the ground terminal of the equipment

for safety and noise reduction. If these ground is not connected together, there is a risk of electric shock.

• Parts with lifetime specifications (built-in fan, electrolytic capacitor) are required to be replaced

periodically. Set the overhaul period depending on the environment of usage and perform maintenance.
If maintenance is not performed, there is possibility of product failure or malfunction.
Also, note that there are cases when EOL products cannot be overhauled.

• Take care not to apply external abnormal voltage to the output. Especially, applying reverse voltage or

over voltage more than the rated voltage to the output might cause failure, electric shock or fire.

• This product has possibility that hazardous voltage may occur in output terminal depending on failure

mode. The output of these products must be protected in the end use equipment to maintain SELV.

• This product contains a printed circuit board utilizing surface mounted devices.

PCB stress such as bending, twisting, etc., could cause damage. Please handle with care.

INSTRUCTION MANUAL

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DRJ120, 240 Series

NOTE

• Take note that traces of sheet metal processing be left in our power supplies.

• When disposing product, follow disposal laws of each municipality.

• Published EMI (CE, RE) and immunity are the result when measured in our standard measurement

conditions and might not satisfy specification when mounted and wired inside end-user equipment.
Use the product after sufficiently evaluating at actual end-user equipment.

• When exporting our products, apply for necessary permissions as required by rules and regulations of

Foreign Exchange and Foreign Trade Control Act.

• Catalogue, contents of the instruction manual may be changed without a prior notice.

Refer to latest catalogue or instruction manual.

• Reproduction or reprinting the instruction manual or its portion is forbidden without our permission.

• CE Marking

CE Marking, when applied to a product covered by this handbook, indicates compliance with the low
voltage directive.

STORAGE METHOD and STORAGE PERIOD

• Store in original package

• Prevent excessive vibration, impact and external force from being applied during storage.

• Store in an area out of direct sunlight

• Temperature and humidity should be within range of product specification (with no condensation)

• Storage period should be up to two years from receiving.

INSTRUCTION MANUAL

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1. Model Name Identification Method

DRJ 120 – 24 – 1 /□

Option (*1)

Single phase AC input

Rated output voltage

Output power type

Series name

2. Terminal Explanation

DRJ120 DRJ120/E

TDK-Lambda

DRJ120, 240 Series

INSTRUCTION MANUAL

(*1) Blank : Block terminal type
/E : European terminal type

DRJ240 DRJ240/E

① +V : + Output terminal
② –V : – Output terminal
③ V.ADJ : Output voltage adjustment trimmer

The output voltage rises when trimmer is turned clockwise.

④ DC OK : Output monitoring indicator

Green LED lights when output voltage is turned on and within specification.

⑤ : Protective Earth (PE) terminal

Connect to safety ground of apparatus or equipment.

⑥ N : Input terminal

Neutral line

⑦ L : Input terminal

Live line (fuse in line)

* All terminal screws are M3.5.

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3. Block Diagram

TDK-Lambda

DRJ120, 240 Series

INSTRUCTION MANUAL

Rectifier

Line Filter

Filter

PFHC Circuit

Switching Circuit

Control Circuit

Rectifier & Filter

4. Sequence time chart

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