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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.
DRJ120, 240 Series
Instruction Manual
1/14
TDK-Lambda
DRJ120, 240 Series
INSTRUCTION MANUAL
PA637-04-01B

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Summary of Contents for TDK-Lambda DRJ120 Series

  • Page 1 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.
  • Page 2: Caution On Use

    TDK-Lambda DRJ120, 240 Series INSTRUCTION MANUAL • 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.
  • Page 3 TDK-Lambda DRJ120, 240 Series INSTRUCTION MANUAL 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.
  • Page 4 TDK-Lambda DRJ120, 240 Series INSTRUCTION MANUAL 1. Model Name Identification Method DRJ 120 – 24 – 1 /□ Option (*1) (*1) Blank : Block terminal type : European terminal type Single phase AC input Rated output voltage Output power type Series name 2.
  • Page 5: Block Diagram

    TDK-Lambda DRJ120, 240 Series INSTRUCTION MANUAL 3. Block Diagram 4. Sequence time chart 5/14 PA637-04-01B...
  • Page 6: Connecting Method

    TDK-Lambda DRJ120, 240 Series INSTRUCTION MANUAL 5. Connecting Method Pay attention to the input wiring. If it is connected to wrong terminal, the product will be damaged.  Input must be off when making connections.  Connect terminal to earth by thick wire for safety and improvement of noise sensitivity.
  • Page 7: Inrush Current

    TDK-Lambda DRJ120, 240 Series INSTRUCTION MANUAL 6-3. Inrush Current DRJ120 is equipped with power thermistor to limit the inrush current. The higher current will flow at higher ambient temperature or re-input condition. DRJ240 is equipped with a relay. Higher current may flow when input turn on interval is short. Please select input switch and fuse carefully with the high temperature and re-input condition.
  • Page 8: Parallel Operation

    TDK-Lambda DRJ120, 240 Series INSTRUCTION MANUAL 6-8. Series Operation For series operation, either method (A) or (B) is possible. Method (A) Method (B) Power Power Load Supply Supply Load Power Power Load Supply Supply In case of method (A), please connect bypass diode to prevent reverse voltage.
  • Page 9 TDK-Lambda DRJ120, 240 Series INSTRUCTION MANUAL 6-11. Withstand Voltage This series is designed to withstand 3.0kVAC between input and output, 1.77kVAC between input and terminal and 500VAC between output and terminal for 1 minute. When test a withstand voltage, set current limit of withstand voltage tester at 20 mA (for between output and terminal: 100 mA).
  • Page 10: Mounting Directions

    TDK-Lambda DRJ120, 240 Series INSTRUCTION MANUAL 7. Mounting Directions 7-1. Mounting Directions The standard mounting is direction (A) and other possible mounting directions are (B) and (C).    Mounting (A) Mounting (B) Mounting (C) Output terminal Input terminal...
  • Page 11 TDK-Lambda DRJ120, 240 Series INSTRUCTION MANUAL DRJ240, DRJ240/E (AC input & DC input : 120VDC ≤ x ≤ 370VDC) Mounting (A) Mounting (B) Mounting (C) Load (%) Mounting Mounting Mounting (°C) -25 - 25 77.5 Ambient temperature (°C) 7-3. Surrounding Space Refer to the below table to provide sufficient distance (X, Y, Z) when unit is mounted with other devices.
  • Page 12: Wiring Method

    TDK-Lambda DRJ120, 240 Series INSTRUCTION MANUAL 8. Wiring Method (1) The input line and output load line shall be separated, and use all lines as thick and short as possible to make lower impedance. The input line and output load line shall be twisted or use shielded wire to improve noise sensitivity.
  • Page 13 TDK-Lambda DRJ120, 240 Series INSTRUCTION MANUAL 10. External Fuse rating Refer to the following fuse rating when selecting the external input fuse. The surge current flows when input turn on. Use slow blow fuse or time lag fuse. Fast blow fuse cannot be used.
  • Page 14: Warranty Period

    TDK-Lambda DRJ120, 240 Series INSTRUCTION MANUAL 12. Before concluding that the product is at fault, perform the following checks: (1) Check the rated input is correct applied. (2) Check the input and output wiring are connected correctly. (3) Ensure the wire size is not too thin.

This manual is also suitable for:

Drj240 seriesDrj240Drj120Drj120/eDrj240/e

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