TDK-Lambda DRJ15, DRJ15/E, DRJ30/E, DRJ50, DRJ30 Instruction Manual

TDKLambda

DRJ15100 Series

INSTRUCTION MANUAL

DRJ15100 Series

Instruction Manual

BEFORE USING THE POWER SUPPLY UNIT

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. There are risks of igniting these
substances and exploding by an arcing.

WARNING

• When installing, ensure that work is done in accordance with the instruction manual.When installation is improper, there is
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.

• Do not touch this product or its internal components while circuit in operation, or shortly after shutdown. There may be high
voltage or high temperature present and you may receive an electric shock or burn.

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

• Do not drop or insert anything into this product. It might cause a failure, fire and electric shock.

• Do not use this product under unusual condition such as emission of smoke or abnormal smell and sound etc.
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 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 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

• 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.

• This power supply is designed and manufactured for use within an end product such that it is accessible to
SERVICE ENGINEERS only.

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

• Input voltage, Output current, Output power, ambient temperature and ambient humidity should be kept within specifications,
otherwise the product will be damaged.

• Do not use this product in environment with a strong electromagnetic field, corrosive gas or conductive substances.

• For applications, which require very high reliability (Nuclear related equipment, medical equipment, traffic control equipment, etc.),
it is necessary to provide a failsafe mechanism in the end equipment.

• Never operate the product under over current or shortcircuit conditions, or outside its specified Input Voltage Range.
Insulation failure, smoking, burning or other damage may occur.

• This product contains a printed circuit board utilizing surface mounted devices.
PCB stress such as bending, twisting etc. could cause damage. Therefore, please handle with care.

• This power supply 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.

• The information in this document is subject to change without prior notice. Please refer to the latest version of the data sheet,
etc., for the most upto date specifications of the product.

• No part of this document may be copied or reproduced in any form without prior written consent of TDKLambda.

Note : CE MARKING

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

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1. Model name identification method

DRJ 15 241 /□

Option (*1) (*1)Blank : Block terminal type

Single phase AC input /C2 : Block terminal type

Rated Output Voltage /C2E : European terminal type

Output Power type (*2) Option of DRJ100

Series Name

2. Terminal Explanation

TDKLambda

DRJ15100 Series

INSTRUCTION MANUAL

/E : European terminal type

compliant with UL609501 Class 2 output (*2)

compliant with UL609501 Class 2 output (*2)

DRJ15, DRJ30 DRJ15/E, DRJ30/E

+V

+VN-V

24VDC/1.25A

V.ADJ

DRJ30-24-1

100-240VAC

DC OK

L

-V -V

24VDC/1.25A

V.ADJ

DC OK

DRJ30-24-1/E

100-240VAC

N

1

+V : +Output terminal

2

-V : -Output terminal

3

Output voltage adjustment trimmer
(DRJ100/C2 and /C2E do not have.)

4

L : Input terminal Live line (Fuse in line)

5

N : Input terminal Neutral line

6

: PE (Protective earthing) terminal

7

L

Output monitoring indicator (Green LED)

*All terminal screw are M3.5

DRJ50 DRJ50/E DRJ100, DRJ100/C2 DRJ100/E, DRJ100/C2E

+V

24VDC/2.1A

V.ADJ

DRJ50-24-1

100-240VAC

-V

-V

DC OK

L

N

+V

24VDC/2.1A

V.ADJ

DRJ50-24-1/E

100-240VAC

N

DC OK

-V+V -V

L

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2/14

+V -V-V

24VDC/4.2A

V.ADJ

DRJ100-24-1

100-240VAC

DC OK

L

N

+V -V+V -V

24VDC/4.2A

V.ADJ

DRJ100-24-1/E

100-240VAC

DC OK

L

N

TDKLambda

DRJ15100 Series

INSTRUCTION MANUAL

3. Connecting method

Pay attention to the input wiring. If it is connected to wrong terminal, the power supply will be damaged.

• Input must be off when making connections.

• Connect terminal to earth (frame ground of the equipment etc.) by thick wire for safety and improvement

of noise sensitivity.

DRJ15, DRJ30 DRJ50 DRJ100, DRJ100/C2

+V

24VDC/0.63A

V.ADJ

DRJ15-24-1

100-240VAC

N

-V

DC OK

L

Load

＋ －

+V

24VDC/2.1A

V.ADJ

DRJ50-24-1

100-240VAC

-V

-V

DC OK

L

N

Load

＋ －

+V -V-V

24VDC/4.2A

V.ADJ

DRJ100-24-1

100-240VAC

DC OK

L

N

Recommended torque : DRJ15, DRJ30 Input, Output terminal 1.0N·m (10.2kgf·cm) ~ 1.4N·m (14.2kgf·cm)

DRJ15, DRJ30 terminal 1.0N·m (10.2kgf·cm)
DRJ50, DRJ100 Input, Output terminal, terminal

1.0N·m (10.2kgf·cm) ~ 1.4N·m (14.2kgf·cm)

DRJ15/E, DRJ30/E DRJ50/E DRJ100/E, DRJ100/C2E

+V

-V -V

24VDC/0.63A

V.ADJ

DC OK

DRJ15-24-1/E

100-240VAC

N

L

Load

＋ －

+V

24VDC/2.1A

V.ADJ

DRJ50-24-1/E

100-240VAC

N

-V+V -V

DC OK

L

Load

＋ －

+V -V+V -V

24VDC/4.2A

V.ADJ

DRJ100-24-1/E

100-240VAC

DC OK

L

N

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TDKLambda

DRJ15100 Series

INSTRUCTION MANUAL

4. Explanation of Functions and Precautions

41. Input Voltage Range

Input voltage range is single phase 85264VAC (4763Hz) or 120370VDC.
Input voltage, which is out of specification, might lead unit damage. For cases where conformance to various
safeties required, described as 100240VAC (5060Hz).
In case of using input voltage, which is less than specification, output voltage might repeat start and stop.
Output derating is required for AC input voltage less than 90VAC (less than 100VAC for /C2 and /C2E).
Regarding the output derating, please see at “53. Output Derating according to Input Voltage”.

42. Output Voltage Range

Output voltage is set the rated value at shipment. Output voltage within +18%/10%（5V : +20%/10%,
12V : +25%/10%） can be adjusted by V.ADJ trimmer (except for /C2 and /C2E).
Turning the trimmer clockwise, the output voltage will be increased. Take note when the output voltage is

increased excessively, over voltage protection (OVP) function may trigger and voltage will be shut down.
Furthermore, when increasing the output voltage, reduce the output current as not to exceed the maximum
output power.
When the trimmer turns quickly at no load condition, the output voltage might not change quickly. In this
case, flow the output current, or wait until the output voltage is stable, and then reinput. Please turn the
trimmer slowly during the output voltage adjustment.

43. Inrush Current

This series equipped Power thermistor to limit the inrush current. The higher current will flow at higher
ambient temperature or reinput condition. Please select input switch and fuse carefully with the high
temperature and reinput the power condition. The inrush current value is under cold start at 25℃ in the

specification. Regarding the external fuse, please see at “9. External Fuse Rating”.

44. Over Voltage Protection (OVP)

The OVP function is inverter shut down method and manual reset type. OVP function operates within125145%
(5V : 124146%, 12V : 133156%) of nominal output voltage.
When OVP triggers, the output will be shut down. To reset OVP, remove the input of power supply for a few
minutes, and then reinput. In addition, the setting value of OVP is fixed and not adjustable. Pay attention not to
apply voltage externally to the output terminal to avoid unit failure. In case of inductive load, put protective
diode in series to the output power line.

45. Over Current Protection (OCP)

This series is hiccup mode with automatic recovery.
OCP function operates when the output current exceeds 105% of maximum DC output current of specification.
The outputs will be automatically recovered when the overload condition is removed. Never operate the unit
under over current or shorted conditions, which may lead unit damage. OCP setting is fixed and cannot be
adjusted externally.

46. Output Ripple & Noise

The standard specification for maximum ripple value is measured according to measurement circuit specified
by JEITA RC9131B. When load lines are longer, ripple will becomes larger. In this case, electrolytic capacitor,
film capacitor, etc. might be necessary to use across the load terminal.
The output ripple cannot be measure accurately if the probe ground lead of oscilloscope is too long.

Power

Supply

150mm

+

C1

C2

Load



Coaxial Cable

1.5m 50Ω

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C1 : 0.1uF Cap., Film
C2 : 100uF Cap., Elect
C3 : 4700pF Cap., Ceramic
R1 : 50Ω

Oscilloscope

R1

C3 Bandwidth : 20MHz

47. Series Operation

For series operation, either method (A) or (B) is possible.

Method (A) Method (B)

TDKLambda

DRJ15100 Series

INSTRUCTION MANUAL

Power

Supply

Power

Supply

+V

+V

V

V

＋

Load

－

Power
Supply

Power

Supply

Note :In case of (A), please connect bypass diodes to prevent reverse voltage.

Please select a bypass diode with maximum forward current rating more than output load current.
And maximum reverse voltage must withstand each power supply output voltage.

48. Parallel Operation

(A) Operation to increase the Output Current is not possible.
(B) Operation as a Backup Power Supply is possible as follows.

1.Set the power supply output voltage higher by the amount of forward voltage drop (VF) of the diode.

2.Please adjust the output voltage of each power supply to be the same.

3.Please use within the specifications for output voltage and output power.

4.Please select a reverse current prevention diode with maximum forward current rating more than output
load current. And maximum reverse voltage must withstand each power supply output voltage.

(A) (B)

+V

+V

V

＋

Load

V

－

＋

Load

－

Power

Supply

Power

Supply

+V

+V

V

V

＋

Load

－

Power

Supply

Power

Supply

+V

+V

V

V

＋

Load

－

49. Isolation Test

Isolation resistance between Output  terminal is more than 100MΩ at 500VDC. For safety operation, voltage
setting of DC isolation tester must be done before the test. Ensure that the unit is fully discharged after the test.

■ Output  terminal : 500VDC More than 100M

AC (L)

＋V

AC (N)

－V

Isolation

Tester

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