MW RSD-60 Series Reliable Railway DC DC Converter Owner’s Manual

MW RSD-60 Series Reliable Railway DC DC Converter

OWNER’S MANUAL

MODEL: RSD-60 series

Features

• Compliance to BS EN/EN50155 and BS EN/EN45545 -2 railway standard
• Ultra compact and 1 U low profile(25 mm)
• 4:1 wide input range
• No minimum load required
• Protections: Short circuit/ Overload/ Over voltage/Input reverse polarity
• 4000VDC 1/0 isolation (Reinforced isolation)
• Half encapsulated , cooling by free air convection
• -40~+70 °C wide working temperature
• Built-in constant current limiting circuit
• LED indicator for power on
• 3 years warranty

Applications

• Bus,tram,metro or railway system
• Highly vibrating, highly dusty, extremely low or high temperature harsh environment Wireless network
• Telecom or datacom system
• Industry control system

GTIN CODE

MW Search: https://www.mea1W1ell.com/serviceGTIN.aspx

Description

RSD-60 is a 60W enclosed type DC -DC reliable railway converter. This series is compliant with BS EN/EN50155/IEC60571 railway standard, constituting three types of models with 4:1 wide but different input ranges 9~36V /18~ 72V /40~160V, suitable for railway and all kinds of transportation systems exploiting the frequently used standard input voltages such as 12V, 24 V, 36V, 48V, 72V, 96V and 11 0V. Various output voltages, 3.3V, 5V, 12V and 24V are available for selection.

This series has the capability of working under -40~+70 °C, low ripple and noise, supreme EMC characteristics, 4KVDC 1/ P-OP, low enclosure profile 25 mm and an interior with semi-potted silicone. It does not only well fits the in- car systems or the facilities by rails for railway, trams and buses but also can be used in the harsh environment with high vibration, high dust, extremely low or high temperature, etc.

Model Encoding

SPECIFICATION

Block Diagram

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 Reverse Polarity Protection

There isa 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.

InputRange and Transient Ability

The series has a wide range input capability. With ££40% of rated input voltage, it can withstand that for 1 second.

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.

Inrush Current

Inrush currentis 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 – L/H type is in compliance with S2 level (10ms), while G types are in compliance with S1 level (3ms)at full load output condition.To fulfil the requirements of S2 level (10ms), G types require de-ratingtheir output load to 50%, please refer to the curve diagrams below.

EN50155: 2017 ver-s Ciompoly nwi th §1level (3ms)

Output Voltage Adjustment

This function is optional, which the standard product does not have it. If you do need the function, please contact MW for details.

Efficiency vs Load & Vin Curve

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

Parallel and Series Connection

Operation in Parallel

Since RSD-60 series don’t have builtin parallel cicuit, it can only use external circuits to achieve the redundant operation but notincreastehe current rating.

1. Add a diode atthe positive-ouotf peuatch power supply (as shown as below), the current rating of the diode should be larger than the maximum output current rating andattachedto a suitable heat sink. This is only for redundant use (increase the reliabiliy of the system) and users have to check suitability of the circut by themselves.

2. Whenusing S.P.S. in parallel connection, the leakage current will incrat tehe asamse etim e. This could pose as a shock hazafror dth e user. So please contact the supplier if you have this kind of application.

B.Operation in Series

RSD-60 can be operated in series. Here are the methods of doing t:

1. Positive and negative terminals are connected as shown as below. According to the connection, you can get the positive and negative output voltages for your loads.

Mechanical Specification

Installation Manual

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

Specifications

• Model: RSD-60 series
• Output Voltage: 3.3V, 5V, 12V, 24V
• Rated Power: 60W
• Input Voltage Range: G: 9~36Vdc, L: 18~72Vdc, H: 40~160Vdc
• Protections: Short circuit, Overload, Over voltage, Input reverse polarity
• Isolation: 4000VDC I/O (Reinforced isolation)
• Working Temperature: -40~+70 degrees Celsius
• Features: Compact design, wide input range, no minimum load required

Product Usage Instructions

Installation

1. Ensure the input voltage matches the specified range for the model.
2. Connect the positive and negative terminals of the input power supply to the corresponding terminals on the converter.
3. Check for correct wiring and secure all connections before powering on.

Operation

1. Power on the converter using the designated switch or power source.
2. Monitor the LED indicator to ensure power is on.
3. Avoid overloading the converter beyond the specified limits to prevent damage.

Maintenance

1. Regularly inspect the converter for any signs of damage or wear.
2. Clean the unit periodically to prevent dust buildup that can affect cooling.
3. Refer to the user manual for troubleshooting steps in case of any issues.

FAQ

Q: What are the applications suitable for this DC-DC Converter?

A: This converter is ideal for use in bus, tram, metro, or railway systems, as well as in environments with extreme temperatures, vibrations, or dust levels.

Q: What are the key protections offered by this converter?

A: The converter provides protection against short circuits, overloads, over voltages, and input reverse polarity.

Q: What is the warranty period for this product?

A: The DC-DC Converter comes with a warranty period of 3 years from the date of purchase.

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