Puls Dimension CP Series User manual

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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1/30
P R E L I M I N A R Y
REDUNDANCY POWER SUPPLY
AC 100-240V Wide-range Input
Width only 48mm
Built-in Decoupling Mosfet for 1+1 and n+1 Redundancy
Efficiency up to 95.2%
20% Output Power Reserves
Safe HiccupPLUS Overload Mode
Easy Fuse Breaking – 3 times nominal current for 12ms
Active Power Factor Correction (PFC)
Minimal Inrush Current Surge
Full Power Between -40°C and +60°C
DC-OK Relay Contact
Current Sharing Feature Included
3 Year Warranty
GENERAL DESCRIPTION
The CP-Series, part of the DIMENSION power supply
family are cost optimized without compromising
quality, reliability and performance.
The CP20.241-Rx units include a decoupling MOSFET for
building 1+1 or n+1 redundant power supply systems
without the need of external redundancy modules.
These redundancy power supplies come with three
connection terminal options; screw terminals, spring-
clamp terminals or plug connector terminals which
allows replacement on an active application.
The most outstanding features of these units are high
efficiency, electronic inrush current limitation, active
PFC and the wide operational temperature range.
The devices also have a power reserve of 20% included,
which may even be used continuously at temperatures
up to +45°C. Additionally, they can deliver 3 times the
nominal output current for 12ms which helps to trip
fuses on faulty output branches.
With high immunity to transients and power surges, low
electromagnetic emission, a DC-OK signal contact for
remote monitoring, and a large international approval
package, makes this unit suitable for nearly every
application.
SHORT-FORM DATA
Output voltage DC 24V 0%/+6%
Adjustment range -
Output current 24A Below +45°C ambient
20A At +60°C ambient
15A At +70°C ambient
Output ripple max. 50mVpp 20Hz to 20MHz
AC Input voltage AC 100-240V -15%/+10%
Mains frequency 50-60Hz ±6%
AC Input current 4.28 / 2.25A At 120 / 230Vac
Power factor 0.99 / 0.95 At 120 / 230Vac
AC Inrush current 10 / 4.5Apk At 120 / 230Vac
Efficiency 93.8 / 95.2% At 120 / 230Vac
Losses 31.7 / 24.2W At 120 / 230Vac
Temperature range -40°C to +70°C
Hold-up time 32ms
Size (w x h x d) 48x124x127mm Without DIN-rail and
plug connectors
Weight 830g / 1.83lb CP20.241-R1
CP20.241-R3
850g / 1.87lb CP20.241-R2
ORDER NUMBERS
Power Supply CP20.241-R2 With hot swappable plug
connectors
(preferred inventory item)
CP20.241-R1 With quick-connect
spring-clamp terminals
CP20.241-R3 With screw terminals
Accessory ZM5.WALL Wall mount bracket
MARKINGS
IND. CONT. E
Q.
UL 508, planned
UL 60950-1,
planned
Marine, planned
Class I Div 2,
planned
IECEx ATEX
II 3G Ex ec nC II T4 Gc
planned

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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P R E L I M I N A R Y
INDEX
Page Page
1. Intended Use .......................................................4
2. Installation Requirements...................................4
3. AC-Input...............................................................5
4. DC-Input...............................................................6
5. Input Inrush Current ...........................................6
6. Output .................................................................7
7. Hold-up Time.......................................................8
8. DC-OK Relay Contact ..........................................9
9. Efficiency and Power Losses..............................10
10. Lifetime Expectancy ..........................................11
11. MTBF ..................................................................11
12. Functional Diagram...........................................12
13. Terminals and Wiring........................................13
14. Replacing Units while the System is Running..14
15. Front Side and User Elements...........................15
16. EMC....................................................................16
17. Environment ......................................................17
18. Protection Features ...........................................18
19. Safety Features ..................................................18
20. Dielectric Strength ............................................19
21. Approvals.......................................................... 20
22. RoHS, REACH and Other Fulfilled Standards .. 20
23. Physical Dimensions and Weight ..................... 21
24. Accessories ........................................................ 23
24.1. ZM5.WALL – Wall/Panel Mount Bracket .23
25. Application Notes............................................. 24
25.1. Peak Current Capability ...........................24
25.2. Adjusting the Output Voltage.................25
25.3. Charging of Batteries ...............................25
25.4. Back-feeding Loads ..................................25
25.5. External Input Protection.........................26
25.6. Output Circuit Breakers............................26
25.7. Series Operation .......................................27
25.8. Parallel Use to Increase Output Power....27
25.9. Parallel Use for Redundancy ....................28
25.10. Inductive and Capacitive Loads................29
25.11. Operation on Two Phases ........................29
25.12. Use in a Tightly Sealed Enclosure ............29
25.13. Mounting Orientations ............................30
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.
No part of this document may be reproduced or utilized in any form without our prior permission in writing.

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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P R E L I M I N A R Y
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.
AC 230V A figure displayed with the AC or DC before the value represents a nominal voltage with
standard tolerances (usually ±15%) included.
E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V)
230Vac A figure with the unit (Vac) at the end is a momentary figure without any additional
tolerances included.
50Hz vs. 60Hz As long as not otherwise stated, AC 230V parameters are valid at 50Hz mains frequency.
may A key word indicating flexibility of choice with no implied preference.
shall A key word indicating a mandatory requirement.
should A key word indicating flexibility of choice with a strongly preferred implementation.
1+1 Redundancy Use of two identical power supplies in parallel to provide continued operation following most
failures in a single power supply. The two power supply outputs should be isolated from each
other by utilizing diodes or other switching arrangements. E.g. two 10A power supplies are
needed to achieve a 10A
redundant system.
N+1 Redundancy Use of three or more identical
power supplies in parallel to
provide continued operation
following most failures in a
single power supply. All power
supply outputs should be
isolated from each other by
utilizing diodes or other
switching arrangements.
E.g.: To achieve a 40A redundant system, five 10A power supplies are needed in a N+1
redundant system.
N+1
Redundancy
1+1
Redundancy
AC
DC
CP20-Rx
Load
+
-
AC
DC
CP20-Rx
AC
DC
CP20-Rx
AC
DC
CP20-Rx
AC
DC
CP20-Rx
AC
DC
AC
DC
AC
DC
CP20-Rx CP20-Rx
CP20-Rx
Load
+
-

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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P R E L I M I N A R Y
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 power supply 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.
Install device in an enclosure providing protection against electrical, mechanical and fire hazards.
Mount the unit on a DIN-rail so that the input terminals are located on the bottom of the unit. For other mounting
orientations see de-rating requirements in this document. See chapter 25.13.
Unused screw terminals should be securely tightened.
Do not unplug the connectors more often than 20 times in total.
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 15%!
Keep the following installation clearances: 40mm on top, 20mm on the bottom (measured from the ventilation grid),
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 power supply).
A disconnecting means shall be provided for the output of the power supplies when used in applications according to
CSA C22.2 No 107.1-01.
For use in a controlled environment according to CSA 22.2 No 107.1-01.
WARNING Risk of electrical shock, fire, personal injury or death.
- Do not use the power supply without proper grounding (Protective Earth). Use the terminal on the input connector
for earth connection and not one of the screws on the housing.
- Turn input 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 are 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 surfaces may cause burns.

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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P R E L I M I N A R Y
3. AC-INPUT
AC input nom. AC 100-240V Suitable for TN-, TT- and IT mains networks
AC input range min. 85-264Vac Continuous operation
min. 264-300Vac < 500ms
Allowed voltage L or N to earth max. 300Vac Continuous, IEC 62477-1
Input frequency nom. 50–60Hz ±6%
Turn-on voltage typ. 82Vac Steady-state value, see Fig. 3-1
Shut-down voltage typ. 72Vac Steady-state value, see Fig. 3-1
External input protection See recommendations in chapter 25.5.
AC 100V AC 120V AC 230V
Input current typ. 5.17A 4.28A 2.25A At 20A, see Fig. 3-3
Power factor*) typ. 0.996 0.996 0.980 At 20A, see Fig. 3-4
Crest factor**) typ. 1.65 1.63 1.63 At 20A
Start-up delay typ. 450ms 420ms 440ms See Fig. 3-2
Rise time typ. 45ms 45ms 45ms At 20A const. current load, 0mF
load capacitance, see Fig. 3-2
typ. 90ms 90ms 90ms At 20A const. current load, 20mF
load capacitance,, see Fig. 3-2
Turn-on overshoot max. 200mV 200mV 200mV See Fig. 3-2
*) The power factor is the ratio of the true (or real) power to the apparent power in an AC circuit.
**) The crest factor is the mathematical ratio of the peak value to RMS value of the input current waveform.
Fig. 3-1 Input voltage range Fig. 3-2 Turn-on behavior, definitions
Turn-on
85V
Rated
input range
max.
500ms
V
P
OUT
IN
300Vac264V
Shut-down
Start-up
delay Rise Time
Overshoot
- 5%
Output
Voltage
Input
Voltage
Fig. 3-3 Input current vs. output current Fig. 3-4 Power factor vs. output current
24A
24681012141618
0
1
2
3
4
5
6A
Input Current, typ.
Power Factor, typ.
2 4 6 8 1012141618 24A
20 22
a) 100Vac
b) 120Vac
c) 230Vac
b
a
c
Output Current
0.75
0.8
0.85
0.9
0.95
1.0
a, b
c
a) 100Vac
b) 120Vac
c) 230Vac
Output Current
20 22

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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P R E L I M I N A R Y
4. DC-INPUT
DC input nom. DC 110-150V ±20%
DC input range min. 88-180Vdc Continuous operation
DC input current typ. 4.64A At 110Vdc, at 20A
Allowed Voltage L/N to Earth max. 375Vdc Continuous, IEC 62477-1
Turn-on voltage typ. 80Vdc Steady state value
Shut-down voltage typ. 70Vdc Steady state value
Fig. 4-1 Wiring for DC Input Instructions for DC use:
+
-
Load
L
PE
+
-
Power Supply
AC
Battery
N
DC
a) 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.
b) Connect +pole to L and –pole to N.
c) Connect the PE terminal to an earth wire or to the
machine ground.
5. INPUT INRUSH CURRENT
An active inrush limitation circuit 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.
AC 100V AC 120V AC 230V
Inrush current max. 15Apeak 12Apeak 5.5Apeak Temperature independent
typ. 12Apeak 10Apeak 4.5Apeak Temperature independent
Inrush energy max. negligible small
Fig. 5-1 Typical input inrush current
behaviour at nominal load and 25°C ambient
Output
100mS/DIV
Input
230Vac
24Vdc
Input Current 5A / DIV

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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P R E L I M I N A R Y
6. OUTPUT
Output voltage nom. DC 24V 0%/+6%
The device is featured with a “soft output regulation characteristic” in order to
achieve current share between multiple devices, when they are connected in
parallel. The “soft output regulation characteristic” regulates the output voltage in
such a manner that the voltage at no load is approx. 4% higher than at nominal
load.
Adjustment range See chapter 25.2
Factory settings typ. 24.1V ±0.2%, at full load, cold unit
typ. 25.1V At no load, cold unit
Line regulation max. 10mV 85-300Vac
Load regulation typ. 1000mV Static value, 0A Æ20A; see Fig. 6-1
Ripple and noise voltage max. 50mVpp 20Hz to 20MHz, 50Ohm
Output current nom. 24A1) Below 45°C ambient temperature, see Fig. 17-1
nom. 20A At 60°C ambient temperature, see Fig. 17-1
nom. 15A At 70°C ambient temperature, see Fig. 17-1
typ. 60A Up to 12ms once every five seconds, see Fig. 6-3
The output voltage stays above 20V. See chapter 25.1
for more peak current measurements.
Overload behaviour Continuous current Output voltage > 13Vdc, see Fig. 6-1
HiccupPLUS®mode2) Output voltage < 13Vdc, see Fig. 6-1
Short-circuit current min. 26A3) Load impedance <10mOhm, see Fig. 6-1
max. 31A3) Load impedance <10mOhm, see Fig. 6-1
max. 9.8A3) Average (R.M.S.) current, load impedance 50mOhm,
see Fig. 6-2.
min. 55A Up to 12ms, load impedance <10mOhm, see Fig. 6-3
typ. 70A Up to 12ms, load impedance <10mOhm, see Fig. 6-3
Output capacitance typ. 8 000μF Included inside the power supply
1) Power Boost
This power/ current is continuously allowed up to an ambient temperature of 45°C.
Above 45°C, do not use this power/ current longer than a duty cycle of 10% and/ or not longer than 1 minute every 10 minutes.
2) HiccupPLUS®Mode
At heavy overloads (when output voltage falls below 13V), the power supply delivers continuous output current for 2s. After this, the
output is switched off for approx. 18s before a new start attempt is automatically performed. This cycle is repeated as long as the overload
exists. If the overload has been cleared, the device will operate normally. See Fig. 6-2.
3) Discharge current of output capacitors is not included.
Fig. 6-1 Output voltage vs. output current, typ. Fig. 6-2 Short-circuit on output, HiccupPLUS mode, typ.
Output Voltage
0
4
8
12
28V
16
20
24
025
40A155 10 20 30 35
Output Current
Continuous
current
Hiccup
PLUS
mode
Output
Current
0
29A
18s
t
18s
18s 2s 2s
2s
Short -circuit Normal
operation
Normal
operation

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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P R E L I M I N A R Y
Fig. 6-3 Dynamic overcurrent capability, typ.
Output Voltage (dynamic behavior, < 12ms)
0
4
8
12
28V
16
20
24
070A3010 40 5020 60
Output Current
7. HOLD-UP TIME
AC 100V AC 120V AC 230V
Hold-up Time typ. 65ms 65ms 65ms At 10A, see Fig. 7-1
min. 54ms 54ms 54ms At 10A, see Fig. 7-1
typ. 32ms 32ms 32ms At 20A, see Fig. 7-1
min. 24ms 24ms 24ms At 20A, see Fig. 7-1
Fig. 7-1 Hold-up time vs. input voltage Fig. 7-2 Shut-down behavior, definitions
0
10
20
30
40
80ms
90 120 155 190 230Vac
Input Voltage
50
60
Hold-up Time
20A, typ.
10A, min.
10A, typ.
70
20A, min.
- 5%
Zero Transition
Output
Voltage
Input
Voltage
Hold-up Time

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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P R E L I M I N A R Y
8. DC-OK RELAY CONTACT
This feature monitors the output voltage of the power supply in front of the decoupling device (see also chapter 12).
Contact closes As soon as the output voltage reaches typ. 22Vdc.
Contact opens As soon as the output voltage dips below 22Vdc.
Short dips will be extended to a signal length of 100ms. Dips shorter than 1ms will be ignored.
Contact ratings Maximal 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A, resistive load
Minimal permissible load 1mA at 5Vdc
Isolation voltage See dielectric strength table in chapter 20.
Fig. 8-1 DC-ok relay contact behavior
100ms
22Vdc
<
1ms
open openclosed closed
>
1ms

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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P R E L I M I N A R Y
9. EFFICIENCY AND POWER LOSSES
AC 100V AC 120V AC 230V
Efficiency typ. 93.2% 93.8% 95.2% At 20A
typ. 93.1% 93.7% 95.1% At 24A (Power Boost)
Average efficiency*) typ. 92.8% 93.4% 94.6% 25% at 5A, 25% at 10A,
25% at 15A. 25% at 20A
Power losses typ. 3.9W 3.5W 3.3W At 0A
typ. 17.4W 16.4W 13.8W At 10A
typ. 35.0W 31.7W 24.2W At 20A
typ. 42.7W 38.7W 29.7W At 24A (Power Boost)
*) 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. 9-1 Efficiency vs. output current, typ Fig. 9-2 Losses vs. output current, typ.
Efficiency
4 6 8 101214 1820 24A
87
88
90
91
92
93
94
95
96%
Output Current
16 22
(a)
(b)
(c)
(a) 100Vac
(b) 120Vac
(c) 230Vac
Power Losses
0 2 6 8 12 14 24A
5
10
20
30
0
40W
18 20410 16
Output Current
22
(a)
(b)
(c)
(a) 100Vac
(b) 120Vac
(c) 230Vac
35
25
15
Fig. 9-3 Efficiency vs. input voltage at 20A,
typ.
Fig. 9-4 Losses vs. input voltage at 20A, typ.
Efficiency
Power Losses
120 180 230 264Vac
90
91
92
93
Input Voltage
94
95
96%
120 180 230 264Vac
10
15
20
25
Input Voltage
30
35
40W
100
100

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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P R E L I M I N A R Y
10. 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.
AC 100V AC 120V AC 230V
Lifetime expectancy 117 000h 136 000h 164 000h At 10A and 40°C
331 000h 386 000h 465 000h At 10A and 25°C
40 000h 53 000h 90 000h At 20A and 40°C
114 000h 150 000h 253 000h At 20A and 25°C
16 000h 25 000h 47 000h At 24A and 40°C
44 000h 69 000h 134 000h At 24A and 25°C
11. 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.
AC 100V AC 120V AC 230V
MTBF SN 29500, IEC 61709 387 000h 412 000h 543 000h At 20A and 40°C
723 000h 768 000h 976 000h At 20A and 25°C
MTBF MIL HDBK 217F 164 000h 169 000h 199 000h At 20A and 40°C;
Ground Benign GB40
224 000h 231 000h 272 000h At 20A and 25°C;
Ground Benign GB25
34 000h 36 000h 42 000h At 20A and 40°C;
Ground Fixed GF40
45 000h 47 000h 56 000h At 20A and 25°C;
Ground Fixed GF25

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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12/30
P R E L I M I N A R Y
12. FUNCTIONAL DIAGRAM
Fig. 12-1 Functional diagram CP20.241-R1 and CP20.241-R3
Output
Over-
Voltage
Protection
PFC
Converter
Power
Converter
Output
Filter
Output
Power
Manager
Temper-
ature
Shut-
down
Input Fuse
Input Filter
Input Rectifier
Active Inrush Limiter
L
N
Decoupling
*)
+
+
-
-
-
Output
Voltage
Regulator
Output
Voltage
Monitor
V
OUT
DC-ok
Contact
DC-ok
LED
DC-ok
Relay
*) Decoupling utilizes a MOSFET
Fig. 12-2 Functional diagram CP20.241-R2
+
-
Output
Over-
Voltage
Protection
PFC
Converter
Power
Converter
Output
Filter
Output
Power
Manager
Temper-
ature
Shut-
down
Input Fuse
Input Filter
Input Rectifier
Active Inrush Limiter
L
N
Decoupling
*)
Output
Voltage
Regulator
Output
Voltage
Monitor
V
OUT
DC-ok
Contact
DC-ok
LED
DC-ok
Relay
*) Decoupling utilizes a MOSFET

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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13/30
P R E L I M I N A R Y
13. TERMINALS AND WIRING
The terminals are IP20 Finger safe constructed and suitable for field- and factory wiring.
CP20.241-R1 Input Output DC-OK-Signal
Type Quick-connect spring-
clamp termination
Quick-connect spring-
clamp termination
Push-in termination
Solid wire Max. 6mm2Max. 6mm2Max. 1.5mm2
Stranded wire Max. 4mm2Max. 4mm2Max. 1.5mm2
American Wire Gauge AWG 20-10 AWG 20-10 AWG 24-16
Max. wire diameter (including ferrules) 2.8mm 2.8mm 1.6mm
Wire stripping length 10mm / 0.4inch 10mm / 0.4inch 7mm / 0.28inch
Screwdriver 3 mm slotted to open
the spring
CP20.241-R2 Input Output DC-OK-Signal
Type Plug connector with
screw termination
Plug connector with
screw termination
Plug connector with
screw termination
Solid wire Max. 4mm2Max. 6mm2Max. 1.5mm2
Stranded wire Max. 2.5mm2Max. 6mm2Max. 1.5mm2
American Wire Gauge AWG 20-12 AWG 24-10 AWG 26-14
Max. wire diameter (including ferrules) 2.4mm 3.2mm 1.8mm
Recommended tightening torque Max. 0.5Nm, 4.5lb-in Max. 0.6Nm, 5.3lb-in Max. 0.8Nm, 7lb-in
Wire stripping length 7mm / 0.28inch 12mm / 0.47inch 6mm / 0.24inch
Screwdriver 3.5mm slotted or cross-
head No 2
3.5mm slotted or cross-
head No 2
3.5mm slotted
CP20.241-R3 Input Output DC-OK-Signal
Type Screw termination Screw termination Push-in termination
Solid wire Max. 6mm2Max. 6mm2Max. 1.5mm2
Stranded wire Max. 4mm2Max. 4mm2Max. 1.5mm2
American Wire Gauge AWG 20-10 AWG 20-10 AWG 24-16
Max. wire diameter (including ferrules) 2.8mm 2.8mm 1.6mm
Recommended tightening torque Max. 1Nm, 9lb-in Max. 1Nm, 9lb-in -
Wire stripping length 7mm / 0.28inch 7mm / 0.28inch 7mm / 0.28inch
Screwdriver 3.5mm slotted or cross-
head No 2
3.5mm slotted or cross-
head No 2
3mm slotted to open
the spring
Instructions for wiring:
a) Use appropriate copper cables that are designed for minimum operating temperatures 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) Unused terminal compartments should be securely tightened.
e) Ferrules are allowed.

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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14/30
P R E L I M I N A R Y
14. REPLACING UNITS WHILE THE SYSTEM IS RUNNING
This feature is available only for the CP20.241-R2 unit, which is equipped with hot-swappable plug connectors.
Fig. 14-1 Replacing the power supply or redundancy module while the system is running
Load
I I
L
N
PE
1a
L N PE
+
-
CP20.241-R2
Power Supply
DC-OK
DC-
OK
Output 24V 20A
Input
L N PE
+
-
CP20.241-R2
Power Supply
DC-OK
DC-
OK
Output 24V 20A
Input
1b
2a
3a 3b
2b
Replacement instructions (Example for left power supply):
-Switch-off circuit breaker (1a).
-Remove plug (2a).
-Remove plug (3a). The plug prevents the cables from shorting.
-Change power supply.
-Put the plug (3a) back in.
-Put the plug (2a) back in.
-Turn-on the circuit breaker (1a).
-The circuit is redundant again.
To replace the right power supply, repeat the process above using (1b), (2b) and (3b).

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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15/30
P R E L I M I N A R Y
15. FRONT SIDE AND USER ELEMENTS
Fig. 15-1 Front side
CP20.241-R1
Fig. 15-2 Front side
CP20.241-R2
Fig. 15-3 Front side
CP20.241-R3
AInput Terminals
N, L Line input
PE (Protective Earth) input
BOutput Terminals
+ Positive output
–Negative (return) output
COutput voltage potentiometer
See chapter 25.2.
DDC-OK LED (green)
On, when the output voltage is above
22V.
EDC-OK Relay Contact
The DC-OK relay contact is
synchronized with the DC-OK LED.
See chapter 8for details.

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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16/30
P R E L I M I N A R Y
16. EMC
The power supply is suitable for applications in industrial environment as well as in residential, commercial and light
industry environment without any restrictions.
EMC Immunity According 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 20V/m Criterion A
Fast transients (Burst) EN 61000-4-4 Input lines
Output lines
DC-OK signal (coupling clamp)
4kV
2kV
2kV
Criterion A
Criterion A
Criterion A
Surge voltage on input EN 61000-4-5 L ÆN
L ÆPE, N ÆPE
2kV
4kV
Criterion A
Criterion A
Surge voltage on output EN 61000-4-5 + Æ-
+ / - ÆPE
1kV
2kV
Criterion A
Criterion A
Surge voltage on Signals EN 61000-4-5 DC-OK signal ÆPE 1kV Criterion A
Conducted disturbance EN 61000-4-6 0.15-80MHz 20V Criterion A
Mains voltage dips EN 61000-4-11 0% of 100Vac
40% of 100Vac
70% of 100Vac
0% of 200Vac
40% of 200Vac
70% of 200Vac
0Vac, 20ms
40Vac, 200ms
70Vac, 500ms
0Vac, 20ms
80Vac, 200ms
140Vac, 500ms
Criterion A
Criterion C
Criterion C
Criterion A
Criterion A
Criterion A
Voltage interruptions EN 61000-4-11 0% of 200Vac (=0V) 5000ms Criterion C
Voltage sags SEMI F47 0706 Dips on the input voltage according to SEMI F47 standard
80% of 120Vac (96Vac)
70% of 120Vac (84Vac)
50% of 120Vac (60Vac)
1000ms
500ms
200ms
Criterion A
Criterion A
Criterion A
Powerful transients VDE 0160 Vver entire load range 750V, 0.3ms Criterion A
Criterions:
A: Power supply shows normal operation behavior within the defined limits.
C: Temporary loss of function is possible. Power supply may shut-down and restarts by itself. No damage or hazards for the power supply
will occur.
EMC Emission According generic standards: EN 61000-6-3 and EN 61000-6-4
Conducted emission
input lines
EN 55011, EN 55015, EN 55022, FCC Part
15, CISPR 11, CISPR 22
Class B
Conducted emission
output lines*)
IEC/CISPR 16-1-2, IEC/CISPR 16-2-1 Limits for DC power port according EN
61000-6-3 fulfilled
Radiated emission EN 55011, EN 55022 Class B
Harmonic input current EN 61000-3-2 Class A fulfilled between 0A and 12A load
Class C fulfilled between 6A and 12A load
Voltage fluctuations, flicker EN 61000-3-3 Fulfilled, tested with constant current
loads, non pulsing
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.
*) for information only, not mandatory for EN 61000-6-3

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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17/30
P R E L I M I N A R Y
Switching Frequencies The power supply has three converters included. Two converters have a fixed switching
frequency and one operates with a variable switching frequency.
Switching frequency 1 110kHz PFC converter
Switching frequency 2 110kHz to 140kHz Main converter, output power dependent
Switching frequency 3 60kHz Auxiliary converter
17. ENVIRONMENT
Operational temperature1) -40°C to +70°C (-40°F to 158°F) See also Fig. 17-1
Storage temperature -40°C to +85°C (-40°F to 185°F) For storage and transportation
Output de-rating 6.4W/°C
12W/°C
+45°C to +60°C (113°F to 140°F), see Fig. 17-1
+60°C to +70°C (140°F to 158°F), see Fig. 17-1
The de-rating is not hardware controlled. The customer has to take care by himself to
stay below the de-rated current limits in order not to overload the unit.
Humidity2) 5 to 95% r.h. IEC 60068-2-30
Vibration sinusoidal 2-17.8Hz: ±1.6mm; 17.8-500Hz: 2g3)
2 hours / axis3)
IEC 60068-2-6
Shock 30g 6ms, 20g 11ms3)
3 bumps / direction, 18 bumps in total
IEC 60068-2-27
Altitude 0 to 2000m (0 to 6 560ft) Without any restrictions
2000 to 6000m (6 560 to 20 000ft) Reduce output current or ambient temperature,
see Fig. 17-2
IEC 62477-1, overvoltage category II
Altitude de-rating 30W/1000m or 5°C/1000m Above 2000m (6500ft), see Fig. 17-2
Over-voltage category III IEC 62477-1, altitudes up to 2000m
II For altitudes from 2000m to 6000m
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 audible noise may be emitted from the power supply during no load, overload or
short circuit.
1) Operational temperature is the same as the ambient or surrounding 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 orientation.
Fig. 17-1 Output current vs. ambient temp. Fig. 17-2 Output current vs. altitude
Allowed Output Current
0
-40 020 40 70°C
4A
8A
12A
16A
20A
24A
60
B
A
A... continuous
B... short term (max. 5s)
0
0 2000m 4000m 6000m
4A
8A
12A
16A
20A
24A
Allowable Output Current
Ambient Temperature Altitude
B
C
A...Tamb<60°C
B...Tamb<50°C
C...Tamb<40°C
D...Shortterm
A
D

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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18/30
P R E L I M I N A R Y
18. 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. 30.5Vdc
max. 32Vdc
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.
Degree of protection IP 20 EN/IEC 60529
Penetration protection > 5mm E.g. screws, small parts
Over-temperature protection yes1) Output shut-down with automatic restart
Input transient protection MOV
(Metal Oxide Varistor)
For protection values see chapter 16 (EMC).
Internal input fuse included Not user replaceable slow-blow high-braking capacity
fuse
1) The temperature sensor is installed inside the isolating transformer and turns the unit off in safety critical situations (e.g. de-rating
requirements not observed, high ambient temperature, ventilation obstructed or the mounting orientation de-rating is not followed).
There is no correlation between the operating temperature and turn-off temperature since this is dependent on input voltage, load and
installation methods.
There is no correlation between the operating temperature and turn-off temperature since this is dependent on input voltage, load and
installation methods.
19. SAFETY FEATURES
Input / output separation Double or reinforced galvanic isolation
SELV IEC/EN 60950-1
PELV IEC/EN 60204-1, EN 62477-1, IEC 60364-4-41
Class of protection I PE (Protective Earth) connection required
Isolation resistance > 500MOhm At delivered condition between input and output,
measured with 500Vdc
> 500MOhm At delivered condition between input and PE,
measured with 500Vdc
> 500MOhm At delivered condition between output and PE,
measured with 500Vdc
> 500MOhm At delivered condition between output and DC-OK
contacts, measured with 500Vdc
PE resistance < 0.1Ohm Resistance between PE terminal and the housing in the
area of the DIN-rail mounting bracket.
Touch current (leakage current) typ. 0.12mA / 0.31mA At 100Vac, 50Hz, TN-,TT-mains / IT-mains
typ. 0.18mA / 0.45mA At 120Vac, 60Hz, TN-,TT-mains / IT-mains
typ. 0.30mA / 0.76mA At 230Vac, 50Hz, TN-,TT-mains / IT-mains
max. 0.16mA / 0.38mA At 110Vac, 50Hz, TN-,TT-mains / IT-mains
max. 0.23mA / 0.55mA At 132Vac, 60Hz, TN-,TT-mains / IT-mains
max. 0.39mA / 0.94mA At 264Vac, 50Hz, TN-,TT-mains / IT-mains

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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19/30
P R E L I M I N A R Y
20. 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. 20-1 Dielectric strength
A B C D
Type test 60s 2500Vac 3000Vac 1000Vac 500Vac
Factory test 5s 2500Vac 2500Vac 500Vac 500Vac
Field test 5s 2000Vac 2000Vac 500Vac 500Vac
Cut-off current setting > 10mA > 10mA > 20mA > 1mA
AD
C
B
B
*)
N
L
Input DC-ok
Earth, PE Output
To fulfil 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.
-
+
B*) When testing input to DC-OK ensure that the max. voltage between DC-OK and the output is not exceeded (column D). We recommend
connecting DC-OK pins and the output pins together when performing the test.

CP20.241-R1, CP20.241-R2,
CP20.241-R3
CP-Series 24V, 20A, SINGLE PHASE INPUT
June 2017 / Rev. 0.1 DS-CP20.241-R2-EN
All parameters are typical values specified at 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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20/30
P R E L I M I N A R Y
21. APPROVALS
EC Declaration of Conformity The CE mark indicates conformance with the
- EMC directive (available),
- Low-voltage directive (available) and the
- ATEX directive (planned)
IEC 60950-1
2nd Edition
planned
CB Scheme,
Information Technology Equipment
UL 508
planned
IND. CONT. E
Q.
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
2nd Edition
planned
Recognized for use as Information Technology Equipment,
Level 5; U.S.A. (UL 60950-1) and Canada (C22.2 No. 60950-1);
E-File: E137006
Applicable for altitudes up to 2000m.
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 12.12.01-2007) and
Canada (C22.2 No. 213-M1987)
EN 60079-0, EN 60079-7
ATEX
planned
II 3G Ex ec nC II T4 Gc
Approval for use in hazardous locations Zone 2 Category 3G.
Number of ATEX certificate: will follow after certification
process.
The power supply 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: will follow after certification
process.
Marine
planned
GL (Germanischer Lloyd) classified
Environmental category: C, EMC2
Marine and offshore applications
EAC TR Registration
(except CP20.241-R3)
Registration for the Eurasian Customs Union market
(Russia, Kazakhstan, Belarus)
22. 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