DC/DC CONVERTER 88-360Vdc Wide-range Input Width only 65mm Efficiency up to 94.6% ATEX and IECEx Approved Excellent Partial Load Efficiency 20% Output Power Reserves Safe HiccupPLUS Overload Mode Easy Fuse Tripping due to High Overload Current (typ. 45A for 15ms) Minimal Inrush Current Surge Full Power Between -25°C and +60°C DC-OK Relay Contact Reverse Input Polarity Protected Current Sharing Feature for Parallel Use 3 Year Warrant GENERAL DESCRIPTION SHORT-FORM DATA The Dimension C-Series are cost optimized power supplies and DC/DC converters without compromising quality, reliability and performance. The C-Series is part of the DIMENSION power supply family. The most outstanding features of CPS20.481-D1 are the wide DCinput range, high efficiency, electronic inrush current limitation, wide operational temperature range. Output voltage Adjustment range Output current The C-Series includes all the essential basic functions. The devices have a power reserve of 20% included, which may even be used continuously at temperatures up to +45°C. Additionally, the CPS20.481-D1 can deliver about 4 times the nominal output current for 15ms which helps to trip fuses on faulty output branches. High immunity to transients and power surges as well as low electromagnetic emission, a DC-OK relay contact and a large international approval package for a variety of applications makes this unit suitable for nearly every situation. ORDER NUMBERS DC 48V 48 - 56V 10A 12A 8.6A 10.3A Output power 480W 576W Output ripple < 50mVpp AC Input voltage DC Input voltage DC 110-300V DC Input current 4.68 / 1.69A Inrush current typ. 6 / 4A peak Efficiency 93.1 / 94.6% Losses 35.6 / 27.4W Temperature range -25°C to +70°C Derating 12W/°C Hold-up time typ. 26 / 26ms Dimensions 65x124x127mm Weight 940g 2.1lb DC/DC converter CPS20.481-D1 48-56V Standard unit IND. CONT. EQ. Wall mount bracket Side mount bracket Redundancy module Oct. 2013 / Rev. 1.2 DS-CPS20.481-D1-EN All parameters are specified at 48V, 10A, 300Vdc, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0 Marine, pending

The information presented in this document is believed to be accurate and reliable and may change without notice. No part of this document may be reproduced or utilized in any form without permission in writing from the publisher. 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 represents a nominal voltage with standard tolerances (usually ±15%) included. E.g.:...

1. INTENDED USE This device is designed for installation in an enclosure and is intended for the general professional use such as in industrial control, office, communication, and instrumentation equipment. Do not use this DC/DC converter in aircraft, trains, nuclear equipment or similar systems 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...

3. AC-INPUT Do not operate this DC/DC converter with AC-input voltage. Use the CPS20.241 unit instead. 4. DC-INPUT Use a battery or a similar DC source. A supply from the intermediate DC-bus of a frequency converter is not recommended and can cause a malfunction or damage the unit. nom. min. min. Slew rate for voltage between input to earth (ground) Allowed input ripple voltage peak value, allowed for transients Allowed voltage between input to earth (ground) 50Hz –10kHz 10kHz – 50kHz steady-state value, see Fig. 4-1 steady-state value at 2.5A load, see Fig. 4-1 steady-state value at 5A load,...

Fig. 4-3 Input current vs. output load at 48V Input Current, typ. 5. INPUT INRUSH CURRENT An active inrush limitation circuit limits the input inrush current after turn-on of the input voltage and after short input voltage interruptions. The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on. Inrush current*) Inrush energy*) Inrush delay *) temperature independent temperature independent temperature independent start-up delay plus rise time Fig. 5-1 Typical input inrush current behaviour at nominal load and 25°C ambient Oct. 2013 / Rev. 1.2...

6. OUTPUT Output voltage Adjustment range Ripple and noise voltage Output current Output power Factory settings Line regulation Load regulation Overload behaviour Short-circuit current Output capacitance *) guaranteed at clockwise end position of potentiometer ±0.2%, at full load, cold unit, in “single use” mode ±0.2%, at full load, cold unit, in “parallel use” mode at no load, cold unit, in “parallel use” mode 88-370Vdc in “single use” mode: static value, 0A 10A; see Fig. 6-1 in “parallel use” mode: static value, 0A 10A, see Fig. 6-2 20Hz to 20MHz, 50Ohm at 48V, ambient temperature <60°C, see...

□innefUSIOfU C-Series Fig. 6-1 Output voltage vs. output current, Output Voltage (Single Use, typ.) Fig. 6-2 Output voltage in "parallel use" Output Voltage (Parallel Use, typ.) Output Current Fig. 6-3 Short-circuit on output. Hiccup™"5 mode, typ. Short -circuit Fig. 6-4 Dynamic overcurrent capability, typ. Output Voltage (dynamic behavior, < 15msi Output Current , All parameters are specified at 48V, 10A, 300Vdc, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

7. HOLD-UP TIME The internal capacitor, which supplies the energy for the hold-up time is isolated by a diode to the input voltage. A short on the input line does not discharge the internal hold-up capacitor. Hold-up Time Fig. 7-1 Hold-up time vs. input voltage Fig. 7-2 Shut-down behavior, definitions Hold-up Time Input Voltage Output Voltage Hold-up Time Input Voltage 8. DC-OK RELAY CONTACT This feature monitors the output voltage, which is produced by the DC/DC converter itself. It is independent of a backfed voltage from a unit connected in parallel to the DC/DC converter output. Contact closes...