Puls Dimension CD Series User manual

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
DC/DC CONVERTER
24V DC-Input
Isolated 24Vdc Output
Efficiency 94.2%
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
3 Year Warranty
1/25
GENERAL DESCRIPTION
The CD10.241 is a DIN-rail mountable DC/DC converter
of the DIMENSION series which provides a floating,
stabilized and galvanically separated SELV/PELV output
voltage.
The CD-Series is part of the DIMENSION power supply
family. The most outstanding features of CD10.241 are
the high efficiency, the small size and the wide
operational temperature range.
The CD-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.
High immunity to transients and power surges as well as
low electromagnetic emission and a large international
approval package for a variety of applications makes
this unit suitable for nearly every situation.
SHORT-FORM DATA
Output voltage DC 24V
Adjustment range 24 - 28V*)
Output current 12 – 10.3A Below +45°C amb.
10 – 8.6A At +60°C ambient
7.5 – 6.5A At +70°C ambient
Derate linearly between +45°C and +70°C
Input voltage DC 24V -25%/+46%
Input voltage range 18 to 35Vdc
Input current typ. 10.5A At 24Vdc input
Input inrush current typ. 6A peak At 25°C
Efficiency 94.2% At 24Vdc input
Losses 14.8W At 24Vdc input
Temperature range -25°C to +70°C
Hold-up time 4ms At 24Vdc input
Size (W x H x D) 42x124x117mm Without DIN-rail
Weight 500g / 1.1lb
*) extended guaranteed adjustment range down to 23V.
ORDER NUMBERS
DC/DC Converter CD10.241
Accessory ZM2.WALL Wall mount bracket
ZM12.SIDE Side mount bracket
YR20.246 Redundancy module
MARKINGS
Ind. Cont. Eq.
UL 508, planned
UL 60950-1
planned
Class I Div 2
planned
IECEx ATEX
planned
Marine,
planned
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
INDEX
Page Page
1. Intended Use .......................................................3
2. Installation Requirements...................................3
3. Input Voltage ......................................................4
4. Input Inrush Current and Soft-start Behavior....5
5. Output .................................................................6
6. Hold-up Time.......................................................7
7. Efficiency and Power Losses................................8
8. Functional Diagram.............................................9
9. Front Side and User Elements.............................9
10. Terminals and Wiring........................................10
11. Lifetime Expectancy ..........................................11
12. MTBF ..................................................................11
13. EMC....................................................................12
14. Environment ......................................................13
15. Protection Features ...........................................14
16. Safety Features ..................................................14
17. Dielectric Strength ............................................15
18. Approvals...........................................................16
19. RoHS, REACH and Other Fulfilled Standards ...16
20. Physical Dimensions and Weight ..................... 17
21. Accessories ........................................................ 18
21.1. ZM2.WALL - Wall Mounting Bracket.......18
21.2. ZM12.SIDE - Side Mounting Bracket........18
21.3. YR20.246 Redundancy Module ................19
22. Application Notes............................................. 20
22.1. Peak Current Capability ...........................20
22.2. Back-feeding Loads ..................................21
22.3. Inductive and Capacitive Loads................21
22.4. Charging of Batteries ...............................21
22.5. External Input Protection.........................21
22.6. Requirements for the Supplying Source..22
22.7. Series Operation .......................................22
22.8. Parallel Use to Increase Output Power....23
22.9. Parallel Use for Redundancy ....................23
22.10. Use in a Tightly Sealed Enclosure ............24
22.11. Mounting Orientations ............................25
The 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.
TERMINOLOGY AND ABREVIATIONS
PE and symbol 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”.
T.b.d. To be defined, value or description will follow later.
DC 24V A figure displayed with the AC or DC before the value represents a nominal voltage with
standard tolerances included.
E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V)
24Vdc A figure with the unit (Vac) at the end is a momentary figure without any additional
tolerances included.
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
2/25

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
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 device in equipment where malfunction may cause severe personal injury or threaten human life.
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 is caused by an internal defect.
If damage or malfunction should occur during installation or operation, immediately turn power off and send unit to
the factory for inspection.
Mount the unit on a DIN-rail so that the output terminals are located on top and input terminal on the bottom. For
other mounting orientations see de-rating requirements in this document.
This device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do
not cover ventilation grid (e.g. cable conduits) by more than 30%!
Keep the following installation clearances: 40mm on top, 20mm on the bottom, 5mm on the left and right sides are
recommended when the device is loaded permanently with more than 50% of the rated power. Increase this clearance
to 15mm in case the adjacent device is a heat source (e.g. another DC/DC converter).
The input must be powered from a SELV source (according to IEC 60950-1), a PELV source (according to IEC 62477-1) or
an Isolated Secondary Circuit (according to UL 508).
WARNING Risk of electrical shock, fire, personal injury or death.
- Turn power off before working on the device. Protect against inadvertent re-powering.
- Make sure that the wiring is correct by following all local and national codes.
- Do not modify or repair the unit.
- Do not open the unit as high voltages may present inside.
- Use caution to prevent any foreign objects from entering the housing.
- Do not use in wet locations or in areas where moisture or condensation can be expected.
- Do not touch during power-on, and immediately after power-off. Hot surface may cause burns.
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
3/25

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
3. INPUT VOLTAGE
Input voltage nom. DC 24V -25%/+46%
Input voltage range 18.0-35.0Vdc full specified
max. 36.0Vdc absolute maximum continuous input voltage with no
damage to the DC/DC converter
Allowed voltage between input
and earth
max. 60Vdc or
42.2Vac
in case the output voltage is not grounded.
Allowed input ripple voltage max. 5Vpp 47Hz-500Hz, the momentary input voltage must always
be within the specified limits.
Turn-on voltage typ. 17.5Vdc steady-state value, see Fig. 3-1
Shut-down voltage typ. 15.5Vdc steady-state value, see Fig. 3-1
Input current typ. 10.5A at 24Vdc input and output 24V, 10A, see Fig. 3-3
14,3A at 18Vdc input and output 24V, 10A, see Fig. 3-3
Start-up delay typ. 200ms see Fig. 3-1
Rise time typ. 200ms 0mF, 24V, constant current load 10A, see Fig. 3-2
typ. 200ms 10mF, 24V, constant current load 10A, see Fig. 3-2
Turn-on overshoot max. 250mV see Fig. 3-2
Input capacitance typ. 4 300μF external capacitors on the input voltage bus are allowed
without any limitations.
Fig. 3-1 Input voltage range Fig. 3-2 Turn-on behavior, definitions
Turn-on
17.5Vdc
V
IN
P
OUT
Shut-down
32.4Vdc 15.5Vdc 18.0Vdc
Rated input range
35.0Vdc
Start-up Rise
delay Time
Overshoot
- 5%
Output
Voltage
Input
Voltage
Fig. 3-3 Input current vs. output load
12A
234 6 8
0
4
8
12
16A
10
Output Current
57911
Input: 24Vdc
Input
Current,
typ.
Input:18Vdc
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
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4/25

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
4. INPUT INRUSH CURRENT AND SOFT-START BEHAVIOR
Inrush current limitation
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 typ. 6Apeak +25°C, cold start, input: 24Vdc
typ. 22Apeak +60°C, cold start, input: 24Vdc
Inrush energy typ. negligible -25°C to +70°C, input: 24Vdc
Fig. 4-1 Input inrush current, typical behavior
Input Current
Input Voltage
Output Voltage
Ipk 6A
Input: 24Vdc
Output: 24V, 10A, constant current load
Ambient: 25°C
Input current 2A / DIV
Input voltage 5V / DIV
Output voltage 5V / DIV
Time basis: 100ms / DIV
Soft-start function:
After the DC/DC converter is turned on, the internal output current rises slowly to its nominal value. This method
charges the output capacitors (internal and external capacitors) slowly and avoids high input currents during turn-on.
High input currents can produce a high voltage drop on the input wiring (especially with long and thin cables) which
reduces the terminal voltage on the DC/DC converter. If the terminal voltage is below the shut-down voltage, the
DC/DC converter will turn-off and will make a new start-up attempt. This effect is avoided with the integrated soft-
start function. Please note, that this function increases the rise time of the output voltage by a small amount.
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
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5/25

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
5. OUTPUT
Output voltage nom. 24V
Adjustment range min. 24-28V *)
max. 30V at clockwise end position of potentiometer
Factory setting 24.1V ±0.2%, at full load, cold unit
Line regulation max. 25mV Input voltage variations between 18 to 35Vdc
Load regulation max. 100mV static value, 0A Æ10A
Ripple and noise voltage max. 50mVpp 20Hz to 20MHz, 50Ohm
Output capacitance typ. 4 500μF
Output current nom. 12A at 24V, ambient < +45°C, see Fig. 5-1
nom. 10A at 24V, ambient < +60°C, see Fig. 5-1
nom. 7.5A at 24V, ambient at +70°C, see Fig. 5-1
nom. 10.3A at 28V, ambient < +45°C, see Fig. 5-1
nom. 8.6A at 28V, ambient < +60°C, see Fig. 5-1
nom. 6.5A at 28V, ambient at +70°C, see Fig. 5-1
Output power nom. 288W for ambient temperatures < +45°C
nom. 240W for ambient temperatures < +60°C
nom. 180W at +70°C ambient temperature
Short-circuit current min. 13A continuous current, short circuit impedance 100mOhm
max. 15A continuous current, short circuit impedance 100mOhm
*) extended guaranteed adjustment range from 23V to 28V.
Fig. 5-1 Output voltage vs. output current at
24Vdc input voltage, typ.
Fig. 5-2 Current limitation vs. input voltage,
(23V constant voltage load), typ.
Output Voltage
6/25
0048
4
8
12
28V
16
20
24
16
A
62 10 12 14
Adjustment
Range
Output Current
Output Current
21 27
14A
13.0
13.5
302418
10.0
10.5
11.0
11.5
12.5
12.0
33
Input Voltage
36Vdc
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
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 typ. 8ms at 24Vdc input and 24Vdc, 5A output, see Fig. 6-1
typ. 4ms at 24Vdc input and 24Vdc, 10A output, see Fig. 6-1
Fig. 6-1 Hold-up time vs. input voltage
0
2
4
6
8ms
18 20 22 24 28Vdc
Input Voltage
Hold-up Time
(a) 24V, 5A, typ.
(b) 24V, 5A, min.
(c) 24V, 10A, typ.
(d) 24V, 10A, min.
26
(a)(b)
(c)(d)
Fig. 6-2 Shut-down test setup Fig. 6-3 Shut-down behavior, definitions
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Load
+
-
DC/DC
Converter
DC
Source
+
-
Input
Output
+
-
CD10
S1
- 5%
Hold-up Time
Output
Voltage
Intput
Voltage
S1 opens
Note: At no load, the hold-up time can be up to several seconds. The green DC-ok lamp is also on during this time.
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
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CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
7. EFFICIENCY AND POWER LOSSES
Input 24Vdc
Efficiency typ. 94.2% at 24V, 10A
typ. 93.7% at 24V, 12A (Power Boost)
Average efficiency*) typ. 94.3% 25% at 2.5A, 25% at 5A,
25% at 7.5A. 25% at 10A
Power losses typ. 1.75W at no output load
typ. 6.8W at 24V, 5A
typ. 14.7W at 24V, 10A
typ. 19.5W at 24V, 12A
*) The average efficiency is an assumption for a typical application where the power supply is loaded with 25% of the nominal load for 25%
of the time, 50% of the nominal load for another 25% of the time, 75% of the nominal load for another 25% of the time and with 100%
of the nominal load for the rest of the time.
Fig. 7-1 Efficiency vs. output current at 24V
output and 24Vdc input voltage, typ.
Fig. 7-2 Losses vs. output current at 24V
output and 24Vdc input voltage, typ.
Efficiency
8/25
2
90
92
94
89
95%
12A4810
Output Current
6
91
93
Power Losses
0 2 4 8 10 12A
0
3
9
15
18W
6
6
12
Output Current
Fig. 7-3 Efficiency vs. input voltage at 24V,
10A, typ.
Fig. 7-4 Losses vs. input voltage at 24V, 10A,
typ.
Efficiency
18 20 22 26 28 32Vdc
95%
92.5
93.5
94.5
94.0
93.0
92.0
24 30
Input Voltage
Power Losses
13
14
15
16
17
18
19W
18 20 24 26 28 32Vdc30
Input Voltage
22
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
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CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
8. FUNCTIONAL DIAGRAM
Fig. 8-1 Functional diagram
+
+
-
-
V
OUT
Input Fuse
&
Input Filter
Output
Voltage
Regulator
Power
Converter Output
Filter
DC
ok
Output
Over-
Voltage
Protection
Reverse
Polarity
Protection
&
Inrush
Limiter
Chassis
Ground
+
-
9. FRONT SIDE AND USER ELEMENTS
Fig. 9-1 Front side
AInput terminals
Screw terminals
+Positive input
-Negative (return) input
Chassis ground: can be used to bond the housing to PE
Ground this terminal to minimize high-frequency emissions.
BOutput terminals
Screw terminals, dual terminals per pole, both pins are equal
+Positive output
-Negative (return) output
COutput voltage potentiometer
Open the flap to set the output voltage. Factory set: 24.1V
DDC-OK LED (green)
On when the voltage on the output terminals is > 21V
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
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9/25

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
10. TERMINALS AND WIRING
Input Output
Type screw terminals screw terminals
Solid wire max. 6mm2max. 6mm2
Stranded wire max. 4mm2max. 4mm2
American Wire Gauge 20-10 AWG 20-10 AWG
Max. wire diameter 2.8mm (including ferrules) 2.8mm (including ferrules)
Wire stripping length 7mm / 0.275inch 7mm / 0.275inch
Screwdriver 3.5mm slotted or
Pozidrive No 2
3.5mm slotted or
Pozidrive No 2
Recommended tightening torque 1Nm, 9lb.in 1Nm, 9lb.in
Instructions:
a) Use appropriate copper cables that are designed for an operating temperature of:
60°C for ambient up to 45°C and
75°C for ambient up to 60°C and
90°C for ambient up to 70°C minimum.
b) Follow national installation codes and installation regulations!
c) Ensure that all strands of a stranded wire enter the terminal connection!
d) Screws of unused terminal compartments should be securely tightened.
Daisy chaining of outputs:
Daisy chaining (jumping from one DC/DC-converter output to the next) is allowed as long as the average output
current through one terminal pin does not exceed 25A. If the current is higher, use a separate distribution terminal
block.
Fig. 10-1 Daisy chaining of outputs Fig. 10-2 Using distribution terminals
DC/DC
Converter
+ + - -
Input
Output
Load
+ -
max 25A!
DC/DC
Converter
+ + - -
Input
Output
Load
+ -
Distribution
Terminals
DC/DC
Converter
+ +
- -
Input
Output
DC/DC
Converter
+ +
- -
Input
Output
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
10/25

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
11. LIFETIME EXPECTANCY
The Lifetime expectancy shown in the table indicates the minimum operating hours (service life) and is determined by
the lifetime expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specified in operational hours and
is calculated according to the capacitor’s manufacturer specification. The manufacturer of the electrolytic capacitors
only guarantees a maximum life of up to 15 years (131 400h). Any number exceeding this value is a calculated
theoretical lifetime which can be used to compare devices.
Input 24Vdc
Lifetime expectancy 299 000h at 24V, 5A and 40°C
103 000h at 24V, 10A and 40°C
56 000h at 24V, 12A and 40°C
844 000h at 24V, 5A and 25°C
292 000h at 24V, 10A and 25°C
159 000h at 24V, 12A and 25°C
12. MTBF
MTBF stands for Mean Time Between Failure, which is calculated according to statistical device failures, and indicates
reliability of a device. It is the statistical representation of the likelihood of a unit to fail and does not necessarily
represent the life of a product.
The MTBF figure is a statistical representation of the likelihood of a device to fail. A MTBF figure of e.g. 1 000 000h
means that statistically one unit will fail every 100 hours if 10 000 units are installed in the field. However, it can not
be determined if the failed unit has been running for 50 000h or only for 100h.
For these types of units the MTTF (Mean Time To Failure) value is the same value as the MTBF value.
Input 24Vdc
MTBF SN 29500, IEC 61709 731 000h at 24V, 10A and 40°C
1 321 000h at 24V, 10A and 25°C
MTBF MIL HDBK 217F 358 000h at 10A and 40°C; Ground Benign GB40
556 000h at 10A and 25°C; Ground Benign GB25
731 000h at 10A and 40°C; Ground Fixed GF40
142 000h at 10A and 25°C; Ground Fixed GF25
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
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11/25

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
13. EMC
The DC/DC converter is suitable for applications in industrial environment as well as in residential, commercial and
light industry environments.
EMC Immunity Generic standards: EN 61000-6-1 and EN 61000-6-2
Electrostatic discharge EN 61000-4-2 Contact discharge
Air discharge
8kV
15kV
Criterion A
Criterion A
Electromagnetic RF field EN 61000-4-3 80MHz-2.7GHz 10V/m Criterion A
Fast transients (Burst) EN 61000-4-4 Input lines
Output lines
4kV
2kV
Criterion A
Criterion A
Surge voltage on input EN 61000-4-5 + Æ- 1kV Criterion A
+/-Æchassis ground 2kV Criterion A
Surge voltage on output EN 61000-4-5 + Æ-
+ / - Æchassis ground
500V
1kV
Criterion A
Criterion A
Conducted disturbance EN 61000-4-6 0.15-80MHz 10V Criterion A
Criterions:
A: DC/DC converter shows normal operation behavior within the defined limits.
C: Temporary loss of function is possible. DC/DC converter may shut-down and restarts by itself. No damage or hazards for the DC/DC
converter will occur.
EMC Emission Generic standards: EN 61000-6-3 and EN 61000-6-4
Conducted emission IEC/CISPR 16-1-2, IEC/CISPR 16-2-1 Class B, input lines
(Limits for DC power ports)
Radiated emission EN 55011, EN 55022 Class B
This device complies with FCC Part 15 rules.
Operation is subjected to following two conditions: (1) this device may not cause harmful interference, and (2) this
device must accept any interference received, including interference that may cause undesired operation.
Switching frequency Variable between 50kHz and 300kHz depending on load and input voltage
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
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12/25

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
14. ENVIRONMENT
Operational temperature1) -25°C to +70°C (-13°F to 158°F) reduce output power according Fig. 14-1
Storage temperature -40 to +85°C (-40°F to 185°F) for storage and transportation
Output de-rating 3.2W/°C 45-60°C (113°F to 140°F)
6W/°C 60-70°C (140°F to 158°F)
Humidity2) 5 to 95% r.H. IEC 60068-2-30
Vibration sinusoidal3) 2-17.8Hz: ±1.6mm; 17.8-500Hz: 2g
2 hours / axis
IEC 60068-2-6
Shock3) 30g 6ms, 20g 11ms
3 bumps / direction, 18 bumps in total
IEC 60068-2-27
Altitude 0 to 6000m (0 to 20 000ft) reduce output power or ambient temperature
above 2000m sea level.
Altitude de-rating 15W/1000m or 5°C/1000m above 2000m (6500ft), see Fig. 14-2
Over-voltage category not applicable The concept of the overvoltage category is
used for equipment energized directly from
the low voltage mains (IEC 60664-1 §4.3.3.2.1).
Degree of pollution 2 IEC 62477-1, not conductive
LABS compatibility The unit does not release any silicone or other LABS-critical substances and is suitable for
use in paint shops.
Corrosive gases ISA-71.04-1985, Severity Level G3, IEC 60068-2-60 Test Ke Method 4
Audible noise Some small audible noise will be emitted from the power supply.
1) Operational temperature is the same as the ambient temperature and is defined as the air temperature 2cm below the unit.
2) Do not energize while condensation is present
3) Tested in combination with DIN-Rails according to EN 60715 with a height of 15mm and a thickness of 1.3mm and standard mounting
orientation. Higher levels allowed when using the wall mounting bracket ZM2.WALL.
Fig. 14-1 Output current vs. ambient temp. Fig. 14-2 Output current vs. altitude at 24V
0
13/25
-25 0 20 40 70°C
2
4
6
8
10
12A
60
Ambient Temperature
continuous
short
term
Allowable Output
Current at 24V
0
0 2000 4000 6000m
2
4
6
8
10
12A
Altitude
A...Tamb<60°C
B...Tamb<50°C
C...Tamb<40°C
C
B
A
shortterm
Allowable Output
Current at 24V
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
15. PROTECTION FEATURES
Output protection Electronically protected against overload, no-load and short-circuits.
In case of a protection event, audible noise may occur.
Output over-voltage protection typ. 31Vdc
max. 32.5Vdc
In case of an internal power supply defect, a redundant
circuit limits the maximum output voltage. The output
shuts down and automatically attempts to restart.
Reverse input polarity protection Included Unit does not start when input voltage is reversed
Output over-current protection Electronically limited See Fig. 5-1
Degree of protection IP 20 According to EN/IEC 60529
Penetration protection > 3.5mm E.g. screws, small parts
Over-temperature protection no -
Input transient protection MOV
(Metal Oxide Varistor)
For protection values see chapter 13 (EMC)
Internal input fuse Included Not user replaceable slow-blow high-braking capacity
fuse
16. SAFETY FEATURES
Classification of output voltage SELV 1) According to IEC/EN 60950-1
PELV 1) According to IEC/EN 60204-1, IEC 62477-1, IEC 60364-4-
41
Class of protection III PE (Protective Earth) connection not required.
A connection of the “Chassis Ground” pin to earth is
recommended for best EMI performance.
Isolation resistance > 500MOhm Input to output, 500Vdc
PE resistance < 0.1Ohm Between housing and Chassis Ground terminal
Touch current (leakage current) The leakage current, which is produced by the DC/DC converter itself, depends on
the input voltage ripple and need to be investigated in the final application.
For a smooth DC input voltage, the produced leakage current is less than 100μA.
1) Provided, that the input voltage meets the requirements of chapter 2.
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
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14/25

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
17. DIELECTRIC STRENGTH
The output voltage is floating and has no ohmic connection to the ground.
Type and factory tests are conducted by the manufacturer. Field tests may be conducted in the field using the
appropriate test equipment which applies the voltage with a slow ramp (2s up and 2s down). Connect all input
terminals together as well as all output poles before conducting the test.
When testing, set the cut-off current settings to the value in the table below.
Fig. 17-1 Dielectric strength
A B C
Type test 60s 1500Vac 1500Vac 500Vac
Factory test 5s 1500Vac 1500Vac 500Vac
Field test 5s 1000Vac 1000Vac 500Vac
Cut-off current setting 40mA 20mA 12mA
A
C
B
+
Input
Chassis
ground
Output
-
+
-
To fulfill the PELV requirements according to EN60204-1 § 6.4.1, we
recommend that either the + pole, the – pole or any other part of
the output circuit shall be connected to the protective earth
system. This helps to avoid situations in which a load starts
unexpectedly or can not be switched off when unnoticed earth
faults occur.
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
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15/25

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
18. APPROVALS
EC Declaration of Conformity
The CE mark indicates conformance with the
- EMC directive and the
- ATEX directive (planned).
IEC 60950-1
2nd Edition
planned
CB Scheme,
Information Technology Equipment
UL 508
planned
IND. CONT. EQ.
LISTED for use as Industrial Control Equipment;
U.S.A. (UL 508) and Canada (C22.2 No. 107-1-01);
E-File: E198865
UL 60950-1
planned
RECOGNIZED for the use as Information Technology
Equipment, Level 3; U.S.A. (UL 60950-1) and Canada (C22.2
No. 60950-1); E-File: E137006
EN 60079-0, EN 60079-7
ATEX
planned
II 3G Ex ec II T4 Gc
Approval for use in hazardous locations Zone 2 Category 3G.
The device must be built-in in an IP54 enclosure.
IEC 60079-0, IEC 60079-7
planned IECEx Suitable for use in Class 1 Zone 2 Groups IIa, IIb and IIc locations. Number of IECEx certificate: T.B.D.
ANSI / ISA 12.12.01-2007
Class I Div 2
planned
Recognized for use in Hazardous Location Class I Div 2 T4
Groups A,B,C,D systems; U.S.A. (ANSI / ISA 12.12.01) and
Canada (C22.2 No. 213-M1987)
Marine
planned
GL (Germanischer Lloyd) classified
Environmental category: C, EMC2
Marine and offshore applications
EAC TR Registration Registration for the Eurasian Customs Union market
(Russia, Kazakhstan, Belarus)
19. ROHS, REACH AND OTHER FULFILLED STANDARDS
RoHS Directive
Directive 2011/65/EU of the European Parliament and the
Council of June 8th, 2011 on the restriction of the use of
certain hazardous substances in electrical and electronic
equipment.
REACH Directive
Directive 1907/2006/EU of the European Parliament and the
Council of June 1st, 2007 regarding the Registration,
Evaluation, Authorisation and Restriction of Chemicals
(REACH)
IEC/EN 61558-2-16
(Annex BB)
Safety Isolating
Transformer
Safety Isolating Transformers corresponding to Part 2-6 of the
IEC/EN 61558
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
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16/25

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
20. PHYSICAL DIMENSIONS AND WEIGHT
Width 42mm 1.65’’
Height 124mm 4.88’’
Depth 117mm 4.61’’
The DIN-rail height must be added to the unit depth to calculate the total required
installation depth.
Weight 500g / 1.10lb
DIN-Rail Use 35mm DIN-rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm.
Housing material Body: Aluminium alloy
Cover: zinc-plated steel
Installation clearances See chapter 2
Fig. 20-1 Front view Fig. 20-2 Side view
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
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17/25

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
21. ACCESSORIES
21.1. ZM2.WALL -WALL MOUNTING BRACKET
This bracket is used to mount the power
supply onto a flat surface without utilizing a DIN-Rail.
21.2. ZM12.SIDE -SIDE MOUNTING BRACKET
This bracket is used to mount DIMENSION units sideways with or without utilizing a DIN-Rail. The two aluminum
brackets and the black plastic slider of the unit have to be detached, so that the steel brackets can be mounted.
For sideway DIN-rail mounting, the removed aluminum brackets and the black plastic slider need to be mounted on
the steel bracket.
Side mounting with DIN-rail brackets Side mounting without DIN-rail brackets
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
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18/25

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
21.3. YR20.246 REDUNDANCY MODULE
19/25
put.
The YR20.246 redundancy module is equipped with two input channels each 10A nominal, which
are individually decoupled by utilizing MOSFET technology. The output can be loaded with
nominal 20A. Using MOSFETs instead of diodes reduces the heat generation and the voltage
drop between input and out
The YR20.246 does not require an additional auxiliary voltage and is self-powered even in case of
a short circuit across the output.
Due to the low power losses, the unit is very slender and only requires 32mm width on the DIN-
rail.
The YR20.246 is equipped with a load share feature, which balance the load current between the
two inputs of the redundancy module.
The “Load Share OK” and the “Redundancy OK” relay contacts enable a remotely alarming of critical situations.
See chapter 22.9 for further wiring information.
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany

CD10.241
CD-Series DC/DC Converter 24V/24V, 10A, 240W
22. APPLICATION NOTES
22.1. PEAK CURRENT CAPABILITY
The unit can deliver peak currents (up to several milliseconds) which are higher than the specified short term currents.
This helps to start current demanding loads. Solenoids, contactors and pneumatic modules often have a steady state
coil and a pick-up coil. The inrush current demand of the pick-up coil is several times higher than the steady-state
current and usually exceeds the nominal output current (including the PowerBoost). The same situation applies when
starting a capacitive load.
The peak current capability also ensures the safe operation of subsequent circuit breakers of load circuits. The load
branches are often individually protected with circuit breakers or fuses. In case of a short or an overload in one branch
circuit, the fuse or circuit breaker need a certain amount of over-current to open in a timely manner. This avoids
voltage loss in adjacent circuits.
The extra current (peak current) is supplied by the power converter and the built-in large sized output capacitors of
the power supply. The capacitors get discharged during such an event, which causes a voltage dip on the output. The
following two examples show typical voltage dips:
Fig. 22-1 Peak loading with 2x the nominal current
for 50ms, typ.
Fig. 22-2 Peak loading with 4x the nominal current
for 5ms, typ.
Output
Voltage
40A Output
Voltage
24V 24V
20A 16V
6V
Output
Current
0A Output
Current
0A
20/25
10ms/DIV 2ms/DIV
Peak load 20A (resistive load) for 50ms
Output voltage dips from 24V to 16V. Peak load 40A (resistive load) for 5ms
Output voltage dips from 24V to 6V.
Peak current voltage dips typ. from 24V to 16V at 20A for 50ms, resistive load
typ. from 24V to 12V at 40A for 2ms, resistive load
typ. from 24V to 6V at 40A for 5ms, resistive load
Jul. 2017 / Rev. 1.1 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany