PULS

Power supply unit

DIMENSION series

CD-series

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

NEC Class 2 and ATEX approval
galvanic isolation
20% power reserve

14.4Vdc-32.4Vdc (24Vdc nom.)
36Vdc absolute max. continuous input voltage with no damage to the DC/DC converter

DC

3.8A (at 24Vdc)
3W/+60°C...+70°C (derating)

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

24Vdc (fixed voltage)
500mV turn-ON overshoot

6ms (buffer time at 24Vdc input)

spring-clamp connections

output overvoltage protection (31Vdc typ. / 32Vdc max.)
Short-circuit current -- min. 3A continuous current (short circuit impedance 200mΩ) / max. 6A 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

0.905 (24Vdc 3.8A input)

DIN rail mounting

650ms start-up delay (24Vdc 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

4.25A (24Vdc input; full 24Vdc output; 3.8A)
1.6A peak max. inrush (at 24Vdc input)

(24Vdc input; 24V output load; 3.8A) 9.7 W
(24Vdc input; 24V output load; 1.9A) 5.5 W

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

Commercialized

CD5241L1

(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
NEC CLASS 2
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; 1.9A output; 1AC 24Vdc input) 228000 hours
(at 40°C; 3.8A output; 1AC 24Vdc input) 134000 hours
(at 25°C; 3.8A output; 1AC 24Vdc input) 378000 hours

24VDC-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
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.

50mVpp (20Hz...20MHz; 50Ω)

1487000h (at 40°C; 24Vac input; MTBF SN 29500 IEC 61709)
2534000h (at 25°C; 24Vac input; MTBF SN 29500 IEC 61709)
665000h (at 40°C; 24Vac input; MTBF MIL HDBK 217F)
937000h (at 25°C; 24Vac input; MTBF MIL HDBK 217F)