Group: PULS
Catalog excerpts
48V DC-input Isolated 24Vdc output Efficiency 94% Width only 42mm 20% Output power reserves Full power between -25°C and +60°C Soft-start function Minimal inrush current surge Reverse input polarity protection DC-OK relay contact Current sharing feature for parallel use 3 Year warranty PRODUCT DESCRIPTION SHORT-FORM DATA The CD10.242 is a DIN rail mountable DC/DC converter of the highly reliable DIMENSION series. It provides a floating, stabilized and galvanically separated SELV/PELV output voltage of 24Vdc with 48Vdc on the input. Output voltage Adjustment range Output current The efficiency of 94% and a slim design are cost- and space-saving, while at the same time offering additional power reserves of 20% which may even be used continuously at ambient temperatures up to +45°C. For even higher power needs, multiple devices can be connected in parallel. At any time, a DC-OK LED and a signal contact are informing about the status of the device. A high immunity to transients and power surges as well as low electromagnetic emission makes this DC/DC converter suitable for nearly every situation. Input voltage Input current Input inrush current Efficiency Power losses Hold-up time Temperature range Size (W x H x D) Weight For 24Vdc/24Vdc or 48Vdc/48Vdc converters, please see PULS products CD10.241 resp. CD10.482. ORDER NUMBERS MAIN APPROVALS For details or a complete approval list, see chapter 19. DC/DC Converter CD10.242 Mechanical Accessory ZM10.WALL Wall/panel mount bracket ZM12.SIDE Side mount bracket IECEx planned ATEX planned Marine planned Jul 2021 / Rev. 0.1 DS-CD10.242-EN All values are typical figures specified at 48Vdc input voltage 24V, 10A output load, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspow
Open the catalog to page 1The information given in this document is correct to the best of our knowledge and experience at the time of publication. If not expressly agreed otherwise, this information does not represent a warranty in the legal sense of the word. As the state of our knowledge and experience is constantly changing, the information in this data sheet is subject to revision. We therefore kindly ask you to always use the latest issue of this document (available under www.pulspower.com). No part of this document may be reproduced or utilized in any form without our prior permission in writing. PE is the...
Open the catalog to page 21. INTENDED USE This device is designed for installation in an enclosure and is intended for commercial use, such as in industrial control, process control, monitoring, measurement, Audio/Video, information or communication equipment or the like. Do not use this device in equipment, where malfunctioning may cause severe personal injury or threaten human life without additional appropriate safety devices, that are suited for the end-application. If this device is used in a manner outside of its specification, the protection provided by the device may be impaired. 2. INSTALLATION INSTRUCTIONS...
Open the catalog to page 33. DC-INPUT The input can be powered from batteries or similar DC sources and must be a PELV or SELV source or an "Isolated Secondary Circuit" in order to maintain a SELV or PELV output. Check for correct input polarity. The device will not operate when the voltage is reversed. DC input DC input range Allowed voltage between input and earth/ground Allowed input ripple voltage Turn-on voltage Shut-down voltage Input current In the frequency range from 47 to 500Hz, the momentary input voltage must always be within the specified limits. 35Vdc Steady-state value, see Fig. 3-1 32Vdc Steady-state...
Open the catalog to page 4Requirements for the Supplying Source In certain circumstances, the input filter of the DC/DC converter can show a resonant effect which is caused by the supplying network. Especially when additional external input filters are utilized, a superimposed AC voltage can be generated on the input terminals of the DC/DC converter which might cause a malfunction of the unit. Therefore, additional input filters are not recommended. To avoid the resonant effects, the minimal resistance of the supplying network which depends on the inductance of the input network, shall be above the boundary curve in...
Open the catalog to page 54. INPUT INRUSH CURRENT An active inrush limitation circuit (inrush limiting NTC resistor which is bypassed by a MOSFET) 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. Inrush current Inrush energy At 40°C, cold start At 40°C, cold start At 25°C, cold start At 40°C, cold start Fig. 4-1 Typical input inrush current behavior at nominal load and 25°C ambient 5. SOFT-START FEATURE After the DC/DC converter is turned on, the internal output current rises slowly to...
Open the catalog to page 66. OUTPUT The output provides a SELV/PELV rated voltage, which is galvanically isolated from the input voltage and is designed to supply any kind of loads, including unlimited capacitive and inductive loads. The output is electronically protected against overload, no-load and short-circuits. In case of a protection event, audible noise may occur. Output voltage Adjustment range Ripple and noise voltage Output current Overload behavior Overload/ short-circuit current Output capacitance Back-feeding loads Factory setting Line regulation Load regulation Fig. 6-1 Output voltage vs. output...
Open the catalog to page 77. HOLD-UP TIME 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. There is no protection in the DC/DC converter which prevents current from flowing back to the input terminals. If prevention is needed, an external diode should be used. At no load, the hold-up time can be up to several seconds. The green DC-OK LED is also on...
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