PULS

Power supply unit

DIMENSION series

CD-series

Power supply unit (PSU) / DC/DC-Converter
20% power reserve

ATEX approval
galvanic isolation
20% power reserve

39Vdc-57Vdc (48Vdc nom.)
30.5-36Vdc for max. 60s

DC

6A (at 24Vdc; -25...+45°C)
5A (at 24Vdc; +45...+60°C)
3W/+60°C...+70°C (derating)

144W (ambient less than 45°C)
120W (ambient less than 60°C)

23-28Vdc (adjustable)
500mV turn-ON overshoot

5.6ms (buffer time at 48Vdc input)

screw-clamp connections

output overvoltage protection (31Vdc typ. / 32Vdc max.)
Short-circuit current -- min. 7A continuous current (short circuit impedance 200mΩ) / max. 10A continuous current (short circuit impedance 200mΩ)
Series / parallel operation -- The DC/DC-converter can be paralleled to increase the output power. Devices can be paralleled for 1+1 redundancy to gain higher system availability. Daisy chaining (jumping from 1 DC/DC-converter output to the next) is allowed as long as the average output current through 1 terminal pin does not exceed 25A. If the current is higher use a separate distribution terminal block.
Back-feeding loads max. 30V -- The unit is resistant and does not show malfunctioning when a load feeds back voltage to the power supply. It does not matter whether the power supply is ON or OFF. The absorbing energy can be calculated according to the built-in large sized output capacitor.
Reverse polarity protection

0.903 (24Vdc 5A input)

DIN rail mounting

670ms start-up delay (48Vdc input)
80ms rise time (nominal input; constant full current load; 0mF load capacitance)

W32mm x H124mm x D102mm

32 mm

Aluminium housing

-25...+70 °C

2.75A (48Vdc input; full 24Vdc output; 5A)
0.8A peak max. inrush (at 48Vdc input)

(48Vdc input; 24V output load; 5A) 12.9 W
(48Vdc input; 24V output load; 2.5A) 6.9 W

For galvanic isolation in mobile applications e.g. ships or forklifts

Commercialized

CD5242

(output stage) 2200 μF

CE marking
UL 508
UL 60950-1
IEC 60950-1 CB-Scheme
IECEx
ATEX
Class I Div. 2 HazLoc
GL Marine
ABS Marine
EAC Registration
EN 61000-6-1 Immunity for residential environments
EN 61000-6-2 Immunity for industrial environments
EN 61000-6-3 Emission for residential environments
EN 61000-6-4 Emission for industrial environments
EN 55011 / EN 55022 class B Disturbance characteristics

(at 40°C; 2.5A output; 1AC 48Vdc input) 169000 hours
(at 40°C; 5A output; 1AC 48Vdc input) 64000 hours
(at 40°C; 6A output; 1AC 48Vdc input) 39000 hours
(at 25°C; 5A output; 1AC 48Vdc input) 181000 hours

48V DC-Input
Isolated 24Vdc Output
Efficiency up to 90.3%
Width only 32mm
20% Output power reserve
Full power between -25°C and +60°C
Soft-start function included
Minimal inrush current surge
Reverse input polarity protection
3 Year warranty
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 CD5.242 converts a 48V voltage to a 24V voltage. The CD5.242 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.

50mVpp (20Hz...20MHz; 50Ω)

951000h (at 40°C; 24Vac input; MTBF SN 29500 IEC 61709)
1560000h (at 25°C; 24Vac input; MTBF SN 29500 IEC 61709)
559000h (at 40°C; 24Vac input; MTBF MIL HDBK 217F)
749000h (at 25°C; 24Vac input; MTBF MIL HDBK 217F)