DC/DC CONVERTER 24V DC-Input Isolated 24Vdc Output NEC Class 2 Output Quick-connect Spring-clamp Connection Terminals Efficiency up to 90.5% Width only 32mm Full Power Between -25°C and +60°C Soft-start Function Included Minimal Inrush Current Surge Reverse Input Polarity Protection 3 Year Warranty GENERAL DESCRIPTION SHORT-FORM DATA 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 or can also be used to refresh and stabilize the 24Vdc on the end of long cable runs. The basic units include all the essential basic functions while the -S1 version is equipped with quickconnect spring clamp terminals, a DC-OK-contact which monitors the output and an input-low-relay-contact. The –L1 version additionally fulfills the NEC Class 2 requirements. All devices except the CD5.241-L1 have a PowerBoost of 20% incorporated. This extra power can even be used continuously up to +45°C. Output voltage Adjustment range Output current Output power Output ripple Input voltage Input voltage range Input current Input inrush current Efficiency Losses Temperature range Derating Hold-up time Dimensions NEC Class 2 20Hz to 20MHz full specified at 24Vdc input at 24Vdc input at 24Vdc input operational +60 to +70°C at 24Vdc input WxHxD 24V->24V, NEC Class 2, CD5.241-L1 Spring-clamp-terminals, 24V->24V, CD5.241-S1 Spring-clamp-terminals, Input-low, DC-OK signals ORDER NUMBERS DC/DC Converter Standard unit Wall mount bracket Side mount bracket Jan. 2014 / Rev. 1.1 DS-CD5.241-L1-EN All parameters are specified at 24V, 3.8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0

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. PE is the abbreviation for Protective Earth and has the same meaning as the symbol Earth, Ground This document uses the term “earth” which is the same as the U.S. term “ground”. To be defined, value or description will follow later. A figure displayed with the AC or DC before the value...

1. INTENDED USE 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. This device is designed for use in hazardous, non-hazardous, ordinary or unclassified locations. 2. INSTALLATION REQUIREMENTS This device may only be installed and put into operation by qualified personnel. This device does not contain serviceable parts. The tripping of an internal fuse...

3. INPUT VOLTAGE Input voltage Input voltage range max. Allowed voltage between input and earth Turn-on voltage Shut-down voltage Input current Start-up delay Rise time Turn-on overshoot Input capacitance Allowed input ripple voltage full specified absolute maximum continuous input voltage with no damage to the DC/DC converter in case the output voltage is not grounded. 47Hz-40kHz, the momentary input voltage must always be within the specified limits. steady-state value, see Fig. 3-1 steady-state value, see Fig. 3-1 steady-state value, see Fig. 3-1 at 24Vdc input and output 24V, 3.8A, see Fig....

□IfUiefDSIOfl) CD-Series I 4. SOFT-START AND INPUT INRUSH CURRENT SURGE 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. Inrush current Inrush energy Fig. 4-1 Input inrush current, typical behavior Input Voltage Output: 24V, 3.8A, constant current load Upper curve: Input current 2A/DIV Middle curve: Input voltage 20V/DIV Lower curve: Output...

□IfUiefDSIOfl) CD-Series Adjustment range min. - not adjustable Factory setting_24.1V_±0.2%, at full load, cold unit_ Line regulation max. 25mV Input voltage variations between 18 to 32.4Vdc Load regulation max. 100mV static value, OA -> 3.8A Ripple and noise voltage max. 50mVpp 20Hz to 20MHz, 50Ohm Short-circuit current min. 3A continuous current, short circuit impedance 200mOhm max. 6A continuous current, short circuit impedance 200mOhm Output voltage vs. output current, Output Voltage Fig. 5-2 Current limitation vs. input voltage, (23V constant voltage load), typ. Output Current Peak current...

6. 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. Hold-up Time input 24Vdc, output: 24Vdc, 1.9A, see Fig. 6-1 input 24Vdc, output: 24Vdc, 3.8A, see...

7. EFFICIENCY AND POWER LOSSES Efficiency Power losses Efficiency vs. output current at 24V, typ. Losses vs. output current at 24V, typ. Power Losses Output Current Output Current Efficiency vs. input voltage at 24V, 3.8A, typ. Losses vs. input voltage at 24V, 3.8A, typ. Power Losses Input Voltage Input Voltage Jan. 2014 / Rev. 1.1 DS-CD5.241-L1-EN All parameters are specified at 24V, 3.8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0