MEAN WELL DDR-240 Series 240W DIN Rail Type DC to DC Converter User Manual

MEAN WELL DDR-240 Series 240W DIN Rail Type DC to DC Converter User Manual

Features

• Compliance to BS EN/EN50155 and BS EN/EN45545-2 railway standard

• Width only 40mm

• 2:1 wide input range

• -40-+70C wide working temperature

• 150% peak load capability

• Current sharing up to 960W(3+1)

• DC output adjustable

• Cooling by free air convection

• Can be installed on DIN rail T S-35/7.5 or 15

• Protections: Short circuit / Overload / Over voltage /
  Over temperature / Input reverse polarity/
  Input under voltage protection

• 4KVdc I/O isolation(Reinforced isolation)

• DC OK relay contact

• Remote ON-OFF control

• 3 years warranty

Applications

• Bus,tram,metro or railway system
• Industrial control system
• Semi-conductor fabrication equipment
• Factory automation
• Electro-mechanical
• Wireless network
• Telecom or datacom system

GTIN CODE
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Description

DDR-240 series is a 240W DIN Rail type DC-DC converter with main features including DIN rail-type easy installation, ultra slim width (40mm), 2:1 wide input voltage, fanless design, -40-+70 t wide operating temperature, 4KVdc I/O isolation, 150% peak load, current sharing, DC OK, adjustable output voltage and full protective functions.

This series of models has various input options: 16.8-33.6V / 33.6-67.2V / 67.2-154V and two output options: 24V / 48V and can be used for industrial & railway control, security control, communication system and other fields.

Suitable applications include to DC buck/boost regulator, increasing system insulation level and voltage drop compensation along cable.. .etc.

Model Encoding

SPECIFICATION

Block Diagram

Derating Curve

Output Derating VS input voltage

Peak Loading

DC OK Relay Contact

Function Manual

1. Current sharing

• Parallel operation is available by connecting the units shown as below (P+,P- are connected mutually in parallel) :
• The voltage difference among each output should be minimized that less than 0.2V is required.
• The total output current must not exceed the value determined by the following equation (Output current at parallel operation) =(The rated current per unit) x (Number of unit) x 0.9.
• In parallel operation 4 units is the maximum, please consult the manufacture for other applications.
• When in parallel operation, the minimum output load should be greater than 3% of total output load. (Min. load > 3% rated current per unit x number of unit)

2. Remote ON-OFF Control
※ The power supply can be turned ON-OFF by using the “Remote ON-OFF” function.

Input Fuse

There is one fuse connected in series to the positive input line, which is used to protect against abnormal surge. Fuse specifications of each model are shown as below.

Input Under-Voltage Protection

If input voltage drops below Vimin, the internal control IC shuts down and there is no output voltage. It recovers automatically when input voltage reaches above Vimin,please refer to the cruve below.

Input Reverse Polarity Protection

There is a MOSFET connected in series to the negative input line. If the input polarity is connected reversely, the MOSFET opens and there will be no output to protect the unit.

Inrush Current

Inrush current is suppressed by a resistor during the initial start-up, and then the resistor is bypassed by a MOSFET to reduce power consumption after accomplishing the start-up.

Hold-up Time

EN50155: 2007 version – B/C- type comply with S2 level (10ms)@ 70% load ; D-type comply with S2 level (10ms)@ full load, Please refer to the table and curves show below for the hold up time specification.

EN50155: 2017 version – Comply with S1 level

Efficiency vs Load & Vin Curve

The efficiency vs load & Vin curves of each model are shown as below.

Immunity to Environmental Conditions

EN45545-2 Fire Test Conditions

Mechanical Specification

Installation Instruction

This series fits DIN rail TS35/7.5 or TS35/15.
For installation details, please refer to the Instruction manual

I nstallation Manual
Please refer to : http://www.meanwell.com/manual.html

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