RACOM DCC24 User manual

Service manual for DC/DC converter
.
DCC24
.
version 1.2
9/15/2015
www.racom.eu
RACOMs.r.o. •Mirova1283•59231NoveMestonaMorave•CzechRepublic
Tel.:[phone]•Fax:[phone]•E-mail: [e-mail]

Table of Contents
1. DC/DC converter ............................................................................................................................. 5
1.1. Brief description .................................................................................................................... 5
1.2. Application ............................................................................................................................ 5
1.3. External circuitry ................................................................................................................... 6
1.4. Technical parameters of the DCC 24 ................................................................................... 6
1.5. Product Consistency ............................................................................................................ 6
2. Declarations .................................................................................................................................... 7
2.1. Declaration of Conformity ..................................................................................................... 7
2.2. Country of Origin .................................................................................................................. 9
3. DCC24 Installation Instructions ..................................................................................................... 10
3.1. Assembly of the DCC24 ..................................................................................................... 10
4. Warranty and Servicing ................................................................................................................. 11
5. Conditions for DCC24 ................................................................................................................... 12
5.1. Important Warning .............................................................................................................. 12
5.2. Conditions of Liability for Defects and Instructions for Safe Operation of Equipment ........ 12
3© RACOM s.r.o. – DCC24

4

1. DC/DC converter
1.1. Brief description
• The DCC 24 is a switched step-down converter, which converts DC voltage in the range 20 V to
60 V on the input side to 13.8 V / 2.5 A DC on the output side.
• The converter has high efficiency, typically better than 80 %.
•It is resistant to polarity reversal of the input voltage, undervoltage at the input, shorting at the output
and connecting voltage to the output terminals. If the input voltage descents under 16.5 V (at Iout
= 2,5 A) then the converter switched off to prevent the unstable conditions.
• Assembly on to DIN rail TS35.
• Minimum ground plan dimension: 35 × 75 mm.
• Maximum demand charge: 35 W.
1.2. Application
• The DCC24 converter is suitable for DC voltage supply to electrical devices when it is necessary
to convert DC voltages in the 20 V to 60 V range to 13.8 V DC and with a maximum output current
of 2.5 A.
• It is typically used for supplying MORSE system devices (MR25 and MR400 radio modems) media
where the backed up distribution is 24 V DC (or 48 V DC).
• Due to its high efficiency and small dimensions the DCC24 converter finds use in supplying elec-
tronic equipment located in mobile devices with a 24 V DC on-board network.
• The design and construction of this device allows for long-term loading and for this reason it is
primarily determined for continuously running applications.
5© RACOM s.r.o. – DCC24
DC/DC converter

• DC/DC converter is designated for Assembly on to DIN rail TS35, ground plan dimension is 35 ×
75 mm.
1.3. External circuitry
Connections of input and output wires to terminals of the converter are shown in the following diagram:
Terminals are of ENTRELEC type and enable connection of conductors with maximum cross section
of 2,5 mm2.
1.4. Technical parameters of the DCC 24
24 VRated input voltage (DC)
1.5 ARated input current
19 V – 60 VRecommended range of input voltages (DC)
16,88 V – 60 VMaximum range of input voltages (DC)
13.8 VOutput voltage
max. ±3 % at 19–60 V,
max. ±6,5 % at 16,8–19 V
Max. output voltage deviation
2.5 AMaximum output current
> 100 000 hoursMTBF (mean time between failures)
-25 to +55 °COperating range of temperature
10–90 %Relative humidity
35 × 75 × 100 mmDimensions: length × width × height
Note
For converters manufactured before February 2008, is the input voltage in the range of
20–60 V.
1.5. Product Consistency
Railway Safety Appliance Standards Regulations
CSN EN 50155 ed. 2nd: 2002. art. 10.2.8.2
CSN EN 50121 art. 7: tab. 3 and 4
Electronic appliances in railway vehicles
CSN EN 50121-3-2 art. 8EMC (Electromagnetic Compatibility)
CSN EN 61373Vibrations and beats
RACOM s. r. o. hereby declares that its GPRS modem MG100 complies of the European Uniondirectives
89/336/EEC. This equipment therefore bears the CE marking.
DCC24 – © RACOM s.r.o.6
DC/DC converter

2. Declarations
2.1. Declaration of Conformity
7© RACOM s.r.o. – DCC24
Declarations

Fig. 2.1: Declaration of conformity
DCC24 – © RACOM s.r.o.8
Declarations

2.2. Country of Origin
Country of Origin Declaration
Producer: RACOM s.r.o.
Address: Mirova 1283, 592 31 Nove Mesto na Morave, Czech Republic
VAT No: CZ46343423
We, the manufacturer, hereby declare that Country of Origin of the RAy microwave links
and its accessories is the Czech Republic, EU.
Nove Mesto na Morave,
Jiri Hruska, CEO
1 of March 2014
www.racom.eu
RACOM s.r.o. • Mirova 1283 • 592 31 Nove Mesto na Morave • Czech Republic
Tel.: [phone] • Fax: [phone] • E-mail: [email protected]
Part Number Description
MS2000/12 230 V AC / 13.8 V DC, intelligent back-up
MS2000/24 230 V AC / 24 V DC, intelligent back-up
MSU120 Arbitrary solar panel / 14.7 V DC
DCC24 20-60 V DC / 13.8 V DC
Fig. 2.2: Country of Origin declaration for MS2000
9© RACOM s.r.o. – DCC24
Declarations

3. DCC24 Installation Instructions
• The device is designed for industrial use for assembly into premises with limited access (electrical
switchboards).
• Wiring up must be carried out by an individual with knowledge of the regulation No. 50/78 Coll. The
source is designed for assembly into switchboards by attaching to a mounting plate on to a DIN
rail. The mounting plate and DIN rail must be properly grounded in accordance with valid standards.
The source must be located in such a way so as not to prevent air circulation necessary for cooling
purposes.
• Conductors must be wired into labelled terminals in accordance with valid standards. Terminals are
only designed for connecting copper conductors of max. diameter 2.5 mm2and do not serve for
switching devices under voltage. If there is a larger distance from the converter to the solar panel
or to the accumulator, where installation leads longer than 3 m would be required, we recommend
wiring in conductors with a greater diameter from the shortest possible distance from the converter
in order to limit power losses in the circuit when it is at maximum charging current.
• We do not recommend changing accumulator poles when wiring up.
•Colour coding of low voltage conductors must comply with the requirements of respective standards.
3.1. Assembly of the DCC24
The DCC24 converter is a special device requiring special assembly. RACOM´s own employees as-
semble all supplied devices at the user's premises. For subsequent maintenance RACOM shall train
the user's specialists who will have the Operating regulations for radio data networks and MORSE
Firmware - Documentation available to help them.
DCC24 – © RACOM s.r.o.10
DCC24 Installation Instructions