DPP240-24-3 - Power Supply TDK-Lambda - Free user manual and instructions

Product Type	Power Supply (AC-DC)
Brand	TDK-Lambda
Model	DPP240-24-3
Input Voltage	AC (input parameters per rating plate)
Output Voltage	24 V (typical for DPP series)
Output Power	240 W (from model)
Output Current	10 A (derived from power and voltage)
Protection Index	IPX0
Pollution Degree	2
Overvoltage Category	II
PCB Group	IIIb
Cooling Type	Natural convection (unobstructed ventilation)
Internal Fuse	Yes, not user-replaceable
Ground Connection	Mandatory, floating outputs possible
Hot Surfaces	Yes, do not touch during operation
Ventilation Safety Distance	Minimum 50 mm around vents
Maintenance	Not repairable by user
Intended Use	Host equipment accessible to competent persons
Operating Environment	Indoor, no liquids or solvents
End-of-Life Disposal	Special components, follow local regulations
Certifications	Complies with applicable safety standards

Frequently Asked Questions - DPP240-24-3 TDK-Lambda

What is the input voltage of the DPP240-24-3 power supply?

The power supply accepts an AC input voltage. The exact values are indicated on the product rating plate. Follow the input parameters listed in the manual's limitations.

Can I repair the power supply myself in case of failure?

No, these products cannot be repaired by the customer. Only TDK-Lambda UK LTD or its authorized agents are permitted to carry out repairs. In the event of an internal defect, the module must be returned to the manufacturer.

How do I clean the DPP240-24-3 power supply?

The power supply is rated IPX0, meaning it is not protected against liquids. Do not use any chemicals, solvents, cleaners, or liquids. Use a dry, lint-free cloth to dust the exterior.

What is the required clearance around the ventilation openings?

Ensure a free space of at least 50 mm between any obstruction and the ventilation openings to guarantee adequate cooling.

Can I connect the outputs to earth?

Yes, the (+) or (-) outputs can be connected to earth or left floating according to your application needs. Ensure the power supply is properly connected to a reliable earth.

What should I do if the internal fuse blows?

The internal fuse is a critical component that should not be replaced by the user. If the power supply stops working, contact TDK-Lambda or an authorized agent for repair.

Can I use this power supply as an external source accessible to operators?

No, the enclosure and chassis are designed to protect experienced personnel. During operation, some parts may become very hot. The power supply must be installed in host equipment with access restricted to competent persons.

What is the maximum output power of the DPP240-24-3?

The model DPP240-24-3 indicates a rated power of 240 W with an output voltage of 24 V, corresponding to a maximum current of 10 A. Check the exact specifications on the rating plate.

How do I properly dispose of this power supply at end of life?

The power supply contains components requiring special measures. Follow local regulations for recycling electronic waste. Do not dispose of it with household waste.

Can I use the power supply in a humid or dusty environment?

The power supply is rated IPX0, so no protection against ingress of liquids or dust. Use it only in a dry, clean environment with pollution degree 2.

USER MANUAL DPP240-24-3 TDK-Lambda

General Safety Instructions:

ENGLISH

READ SAFETY INSTRUCTIONS

Servicing:

These products are not customer serviceable. TDK-Lambda UK LTD. and their authorised agents only are permitted to carry out repairs.

Critical Components:

These products are not authorised for use as critical components in nuclear control systems, life support systems or equipment for use in hazardous environments without the express written approval of the Managing Director of TDK-Lambda EMEA.

Product Usage:

These products are designed for use within a host equipment which restricts access to authorised competent personnel.

Environmental:

These products are IPX0, and therefore chemicals/solvents, cleaning agents and other liquids must not be used.

Environment:

This power supply is a switch mode power supply for use in applications within a Pollution Degree 2, overvoltage category II environment. Material Group IIIb PCB's are used within it.

Output Loading:

The output power taken from the power supply must not exceed the rating stated on the power supply label, except as stated in the product limitations in this handbook.

Input Parameters:

This product must be operated within the input parameters stated in the product limitations in this handbook.

End of Life Disposal:

The unit contains components that require special disposal. Make sure that the unit is properly disposed of at the end of its service life and in accordance with local regulations.

RISK OF ELECTRIC SHOCK

High Voltage Warning:

Dangerous voltages are present within the power supply. The professional installer must protect service personnel from inadvertent contact with these dangerous voltages in the end equipment.

This product must be reliably earthed and professionally installed in accordance with the prevailing local electrical wiring regulations and safety standards.

The (+) or (-) output(s) can be earthed or left floating.

An internal fuse protects the unit and must not be replaced by the user. In case of internal defect, the unit must be returned to TDK-Lambda UK LTD or one of their authorised agents.

HOT SURFACE

External Hot Surfaces:

In accordance with local regulations for Health and Safety at work, manufacturers have an obligation to protect service engineers as well as users. In order to comply with this, a label must be fitted to these products which is clearly visible to service personnel accessing the overall equipment, and which legibly warns that surfaces of these products may be hot and must not be touched when the products are in operation.

The ventilation openings on these products must not be impeded. Ensure that there is at least 25mm spacing between any obstruction and the ventilation openings.

The unit cover/chassis is designed to protect skilled personnel from hazards. They must not be used as part of the external covers of any equipment where they may be accessible to operators, since under full load conditions, part or parts of the unit chassis may reach temperatures in excess of those considered safe for operator access.

Attention-Danger haute tension:

SOLO PER I PRODOTTI A CA-CC

RISCHIO DI SCOSSA ELETTRICA

APENAS PRODUTOS CA-CC

RISCO DE CHOQUE ELÉCTRICO

Special Safety Instructions

Standard Specific Safety Instructions:

Whilst all individual outputs are classed as SELV outputs in accordance with the standard IEC/EN/UL/CSA60950-1 (<60Vdc or 42.4V peak), seriesed combinations of these outputs may exceed these values and become hazardous output voltages.

If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.

Environmental Specifications:

Description Operation Storage
Use Indoor -Temperature -25°C - +71°C (derating at 2.5%/°C from 61°C) -25°C - +85°C
Humidity 20 - 95% RH, non-condensing 20 - 95% RH, non-		condensing
Altitude 2000M	4850m (IEC60068-2-13)
Orientation	See Fig 1	ALL
Material Group	IIIb
Pollution Degree	2
Class	I

Level of Insulation:

Dielectric Strength testing is carried out as follows:

Primary mains circuit to earth: - 1500KVAC, 2121VDC

Primary mains circuits to secondary: 3kVAC, 4142VDC*

*This test is not possible with Y capacitors fitted to the unit as damage to these capacitors will occur. It is also necessary to short circuit the output together and to earth.

Safety Approvals:

UL508

UL/cUL60950-1 (2 ^nd Edition)

IEC / EN60950-1(2 ^nd Edition)

CE marking when applied to any DPP240-xx-3 product indicates compliance with the Low Voltage Directive (2006/95/EC) in that it complies with EN60950-1 ( 2^nd Edition).

Fusing: Internal fuses (F1): Single fuse each phase, T2AH, 600V

Symbols:

AC

EARTH

N - Neutral

L - Live

If the earth terminal of the DPP240-xx-3 PSU is connected to the main incoming earth conductor of the end equipment, the installer must cover the earth symbol with a label bearing the earth symbol of IEC60417-5019.

Input Parameters:

Description Operation

Nominal input voltage 340-575VAC three phase

Input frequency range 47 – 63Hz

Maximum input current 0.36A typical

Output Parameters:

Output Watts	Vout (V)	Adjustment	range (V)	Output current (A)
240W		24 22.5 – 28.5 10
		48 47 - 56 5

Adjusting output voltage beyond the stated range may cause overvoltage protection (OVP) to operate, whereby the output will latch off. To reset for normal operation simply adjust the potentiometer to reduce the output voltage to within its range and cycle the input off then on.

All outputs are SELV except under the following circumstance: Outputs connected in series are non-SELV if the total output voltage exceeds 60Vdc

If the total voltage of outputs connected in series exceed the 60Vdc SELV limit then all outputs must be considered non-SELV.

Non-SELV outputs are hazardous and must not be made user accessible. Consideration must be given to service engineers making inadvertent contact with the output terminals in the end equipment.

All outputs have functional spacing to earth, and due consideration must be given to this in the end product design.

Parallel operation - Up to 2 units may be connected in parallel, output loading 10-90% in parallel mode. For parallel connection, ensure the parallel/single switch is in the upper (parallel) position. Connect up to a maximum of 2 units ensuring the connecting wires used are the same type, gauge and length. This will aid current sharing.

Cooling for unit

The unit must be mounted on a DIN rail and must not be inverted, the output connection uppermost.

Fig. 1

Fig. 2

Fig. 3

Standard screw type connection: AWG24 to AWG10 can be used, maximum torque rating for the input connector is 1.0Nm (9 pound-inches), for the output connector 0.62Nm (5.5 Pound-inches).
For UL508 only – Maximum ambient temp 55°C

Mechanical Outline Drawings:

Front panel indicators:

DC ON - The Green LED is on when the output voltage is >75%.

DC LOW - The red LED is on when the output voltage is between 70 - 90%.

The output can be increased by turning the front panel potentiometer clockwise, turning the potentiometer counter clockwise will decrease the output.

Adjusting output voltage beyond the stated range may cause overvoltage protection (OVP) to clamp the output. To reset for normal operation simply adjust the potentiometer to reduce the output voltage to within its range (see table above)

Power ready signal (Rdy) 24V model only.

Contact closed at start up - threshold voltage 17.6 - 19.4Vdc

Contact electrical isolation 500Vdc

Contact rating 60Vdc/0.3A

Weight: DPP240-xx-3 weighs 1100g

TDK·Lambda

TDK-Lambda UK Ltd

Kingsley Avenue, Ilfracombe

Devon, EX34 8ES

Telephone - Sales and Service [phone]

Head Office and Works [phone]

Facsimile [phone]