Puls Dimension CD Series Manual

Dc/dc converter 12v, 8a

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Manual (27 pages)

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CD-Series

ENERAL

ESCRIPTION

The Dimension CD-Series offer DIN-rail DC/DC converters

in the 92-120W output power range in a very compact

housing. These DC/DC converters are allowed to run

with a battery or similar sources.

The CD5.121 converts a 24V voltage to a 12V voltage.

The CD5.121 includes all the essential basic functions

and has a power reserve of 20% included. This extra

power can be used continuously up to +45°C.

The output is electrically isolated from the input in a

safe way. The input is protected against reversed

voltages and contains a soft start function.

CD-Series

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Summary of Contents for Puls Dimension CD Series

Page 1 CD5.121 DC/DC Converter 12V, 8A CD-Series DC/DC C ONVERTER 24V DC-Input Isolated 12Vdc Output Efficiency up to 88.2% Width only 32mm 20% Output Power Reserves Full Power Between -25°C and +60°C Soft-start Function Included Minimal Inrush Current Surge Reverse Input Polarity Protection 3 Year Warranty ENERAL ESCRIPTION...
Page 2: Table Of Contents
The information presented in this document is believed to be accurate and reliable and may change without notice. Some parts of this unit are patent by PULS (US patent No 091662,063, Des. 424,529, …). No part of this document may be reproduced or utilized in any form without permission in writing from PULS GmbH. ERMINOLOGY AND...
Page 3: Intended Use
CD5.121 DC/DC Converter 12V, 8A CD-Series 1. I NTENDED This device is designed for installation in an enclosure and is intended for the general use such as in industrial control, office, communication, and instrumentation equipment. Do not use this DC/DC converter in equipment where malfunction may cause severe personal injury or threaten human life.
Page 4: Input Voltage
CD5.121 DC/DC Converter 12V, 8A CD-Series 3. I NPUT OLTAGE Input voltage nom. DC 24V Input voltage range 18.0-32.4Vdc full specified 14.4-18.0Vdc maximal 60 seconds or with de-rating see Fig. 3-2 max. 36.0Vdc absolute maximum continuous input voltage with no damage to the DC/DC converter Allowed voltage between input max.
Page 5: Soft-Start And Input Inrush Current Surge
CD5.121 DC/DC Converter 12V, 8A CD-Series 4. S START AND NPUT NRUSH URRENT URGE Inrush current limitation An active inrush limitation circuit (inrush limiting resistor which is bypassed by a relay contact) limits the input inrush current after turn-on of the input voltage. The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on.
Page 6: Output
CD5.121 DC/DC Converter 12V, 8A CD-Series 5. O UTPUT Output voltage nom. Adjustment range min. 12-15V guaranteed max. 16.1V at clockwise end position of potentiometer Factory setting 12.0V ±0.2%, at full load, cold unit Line regulation max. 25mV Input voltage variations between 18 to 32.4Vdc Load regulation max.
Page 7: Hold-Up Time
CD5.121 DC/DC Converter 12V, 8A CD-Series 6. H The input side of the DC/DC converter is equipped with a bulk capacitor which keeps the output voltage alive for a certain period of time when the input voltage dips or is removed. The bulk capacitor can be discharged by loading the DC/DC converter on the output side or through a load which is parallel to the input.
Page 8: Efficiency And Power Losses
CD5.121 DC/DC Converter 12V, 8A CD-Series 7. E FFICIENCY AND OWER OSSES Input 24Vdc Efficiency typ. 88.2% at 12V, 8A Power losses typ. 0.6W at no output load typ. 6.4W at 12V, 4A typ. 12.8W at 12V, 8A typ. 16.8W at 12V, 9.6A Fig.
Page 9: Functional Diagram
CD5.121 DC/DC Converter 12V, 8A CD-Series 8. F UNCTIONAL IAGRAM Fig. 8-1 Functional diagram Output Voltage Regulator Reverse Polarity Input Fuse Power Protection Output & Converter & Filter Input Filter Inrush Chassis Limiter Ground Output Over- Over- Temperature Voltage Protection Protection 9.
Page 10: Terminals And Wiring
CD5.121 DC/DC Converter 12V, 8A CD-Series 10. T ERMINALS AND IRING Input Output Type screw terminals screw terminals Solid wire max. 6mm max. 6mm Stranded wire max. 4mm max. 4mm American Wire Gauge 20-10 AWG 20-10 AWG Wire stripping length 7mm / 0.275inch 7mm / 0.275inch Screwdriver...
Page 11: 12. Emc
CD5.121 DC/DC Converter 12V, 8A CD-Series 12. EMC The DC/DC converter is suitable for applications in industrial environment as well as in residential, commercial and light industry environment without any restrictions. Generic standards: EN 61000-6-1 and EN 61000-6-2 EMC Immunity Electrostatic discharge EN 61000-4-2 Contact discharge...
Page 12: Environment
CD5.121 DC/DC Converter 12V, 8A CD-Series 13. E NVIRONMENT Operational temperature -25°C to +70°C (-13°F to 158°F) reduce output power according Fig. 13-1 Storage temperature -40 to +85°C (-40°F to 185°F) for storage and transportation Output de-rating 1.25W/°C 45-60°C (113°F to 140°F) 2.5W/°C 60-70°C (140°F to 158°F) Humidity...
Page 13: Protection Features
CD5.121 DC/DC Converter 12V, 8A CD-Series 14. P ROTECTION EATURES Output protection Electronically protected against overload, no-load and short-circuits Output over-voltage protection typ. 16.5Vdc in case of an internal power supply defect, a redundant max. 16.8Vdc circuit limits the maximum output voltage. The output shuts down and automatically attempts to restart.
Page 14: Dielectric Strength
CD5.121 DC/DC Converter 12V, 8A CD-Series 16. D IELECTRIC TRENGTH The output voltage is floating and has no ohmic connection to the ground. Type and factory tests are conducted by the manufacturer. Field tests may be conducted in the field using the appropriate test equipment which applies the voltage with a slow ramp (2s up and 2s down).
Page 15: Approvals
CD5.121 DC/DC Converter 12V, 8A CD-Series 17. A PPROVALS EC Declaration of Conformity The CE mark indicates conformance with the - EMC directive and the - ATEX directive. IEC 60950-1 CB Scheme, Edition Information Technology Equipment UL 508 LISTED for use as Industrial Control Equipment; U.S.A.
Page 16: Physical Dimensions And Weight
CD5.121 DC/DC Converter 12V, 8A CD-Series 19. P HYSICAL IMENSIONS AND EIGHT Weight 425g / 0.94lb DIN-Rail Use 35mm DIN-rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm. The DIN-rail height must be added to the unit depth (102mm) to calculate the total required installation depth.
Page 17: Accessories
CD5.121 DC/DC Converter 12V, 8A CD-Series 20. A CCESSORIES ZM1.WALL Wall mounting bracket This bracket is used to mount specific Dimension units onto a flat surface without utilizing a DIN-Rail. The two aluminum brackets and the black plastic slider of the unit have to be removed, so that the two steel brackets can be mounted.
Page 18: Application Notes
CD5.121 DC/DC Converter 12V, 8A CD-Series 21. A PPLICATION OTES 21.1. P URRENT APABILITY Solenoids, contactors and pneumatic modules often have a steady state coil and a pick-up coil. The inrush current demand of the pick-up coil is several times higher than the steady-state current and usually exceeds the nominal output current (including the PowerBoost) The same situation applies, when starting a capacitive load.
Page 19: Charging Of Batteries
CD5.121 DC/DC Converter 12V, 8A CD-Series 21.4. C HARGING OF ATTERIES The DC/DC converter can be used to charge lead-acid or maintenance free 12V VRLA batteries. Instructions for charging batteries: Ensure that the ambient temperature of the DC/DC converter is below 45°C Do not use DC/DC converters in mounting orientations other than the standard mounting orientation (input terminals on the bottom and output terminals on top of the unit).
Page 20: Parallel Use To Increase Output Power
45°C. The CD5.121 can also be Input paralleled with power supplies from the QS10.121 from the DIMENSION QS- series. For other power supplies consult PULS. The output voltages of all DC/DC-converters shall be adjusted to the same value Output (±100mV) at full load.
Page 21: Daisy Chaining Of Outputs
CD5.121 DC/DC Converter 12V, 8A CD-Series 21.9. D AISY HAINING OF UTPUTS Daisy chaining (jumping from one DC/DC-converter output to the next) is allowed as long as the average output current through one terminal pin does not exceed 25A. If the current is higher, use a separate distribution terminal block.
Page 22: Mounting Orientations
CD5.121 DC/DC Converter 12V, 8A CD-Series 21.12. M OUNTING RIENTATIONS Mounting orientations other than input terminals on the bottom and output on the top require a reduction in continuous output power or a limitation in the max. allowed ambient temperature. The amount of reduction influences the lifetime expectancy of the DC/DC converter.

This manual is also suitable for:

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