Puls Dimension CP Series User manual

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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POWER SUPPLY
▪AC 100-240V Wide-range input
▪Width only 48mm
▪Display for condition monitoring and easy analysis of
power errors
▪Efficiency up to 95.6%
▪20% output power reserves
▪Easy Fuse Breaking –3 times nominal current for 12ms
▪Safe HiccupPLUS Overload Mode
▪Full power between -25°C and +60°C
▪DC OK relay contact
▪ALARM relay contact
▪Remote ON/OFF functionality
▪Current sharing feature for parallel use
▪3 Year Warranty
PRODUCT DESCRIPTION
The CP20.248 is a DIN-rail mountable single-phase-input power
supply, which provides a floating, stabilized and galvanically
separated SELV/PELV output voltage.
The device has a condition display integrated which shows real-
time and recorded data informing about the condition of the
power supply and the power line.
A DC OK signal, an alarm signal and remote ON/OFF make the
unit suitable for many applications, where preventive function
monitoring and remote control can help to avoid costly
downtimes.
The device has a power reserve of 20% included, which may
even be used continuously up to +45°C. Additionally it can
deliver 3 times the nominal output current for 12ms, which
helps to trip fuses on faulty output branches.
The device is equipped with a “Single Use / Parallel Use” feature,
which enables a load sharing between power supplies when
they are connected in parallel.
The Dimension CP-Series are cost optimized power supplies
without compromising quality, reliability and performance. The
most outstanding features of this series are the high efficiency,
electronic inrush current limitation, active PFC, wide operational
temperature range and the extraordinary small size.
SHORT-FORM DATA
Output voltage
DC 24V
Nominal
Adjustment range
24 - 28V
Factory setting 24.1V
Output current
24.0 - 20.6A
Below +45°C ambient
20.0 –17.1A
At +60°C ambient
15.0 –13.0A
At +70°C ambient
Derate between +45°C and +70°C
Input voltage AC
AC 100-240V
-15%/+10%
Mains frequency
50-60Hz
±6%
Input current AC
4.26 / 2.23A
At 120 / 230Vac
Power factor
0.99 / 0.98
At 120 / 230Vac
Input voltage DC
DC 110-150V
±20%
Input current DC
4.64A
At 110Vdc
AC Inrush current
10.0 / 4.5Apk
At 120 / 230Vac
Efficiency
94.2 / 95.6%
At 120 / 230Vac
Losses
29.6 / 22.1W
At 120 / 230Vac
Hold-up time
32/ 32ms
At 120 / 230Vac
Temperature range
-25°C to +70°C
Size (WxHxD)
48x124x127mm
Without DIN-rail
Weight
835g / 1.84lb
ORDER NUMBERS
Power Supply CP20.248
Mechanical Accessory
ZM10.WALL Wall/Panel mount bracket
MAIN APPROVALS
For details or a complete approval list see section 22.
IEC 61010-2-201
(planned)

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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INDEX
Page Page
1. Intended Use................................................................3
2. Installation Instructions................................................4
3. AC-Input .......................................................................5
4. DC-Input .......................................................................6
5. Input Inrush Current.....................................................6
6. Output..........................................................................7
7. Hold-up Time................................................................9
8. DC OK Relay Contact ....................................................9
9. Power Supply Condition Display.................................10
10. Remote ON / OFF Function ........................................12
11.“Alarm“ Relay Contact................................................12
12. Efficiency and Power Losses.......................................13
13. Functional Diagram ....................................................14
14. Front Side and User Elements ....................................15
15. Connection Terminals ................................................16
16. Lifetime Expectancy ...................................................17
17. MTBF ..........................................................................17
18. EMC ............................................................................18
19. Environment...............................................................20
20. Safety and Protection Features..................................21
21. Dielectric Strength......................................................22
22. Approvals ................................................................... 23
23. Regulatory Compliance.............................................. 23
24. Physical Dimensions and Weight ............................... 24
25. Accessories................................................................. 25
25.1. ZM10.WALL –Wall/Panel Mount Bracket........ 25
25.2. UF20.241 Buffer Module.................................. 26
25.3. YR40.241 - Redundancy Module ...................... 26
25.4. YR40.242 - Redundancy Module ...................... 26
25.5. YR40.245 - Redundancy Modules..................... 27
26. Application Notes....................................................... 28
26.1. Peak Current Capability.................................... 28
26.2. Output Circuit Breakers.................................... 29
26.3. Charging of Batteries........................................ 30
26.4. Series Operation............................................... 30
26.5. Parallel Use to Increase Output Power ............ 30
26.6. Parallel Use for Redundancy ............................ 31
26.7. Operation on Two Phases ................................ 32
26.8. Use in a Tightly Sealed Enclosure ..................... 32
26.9. Mounting Orientations..................................... 33
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.
Packaging and packaging aids can and should always be recycled. The product itself may not be disposed of as domestic refuse.
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.

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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1. INTENDED USE
This device is designed for installation in an enclosure and is intended for commercial use, such as in industrial control, process control,
monitoring and measurement equipment or the like.
Do not use this device in equipment, where malfunctioning may cause severe personal injury or threaten human life without additional
appropriate safety devices, that are suited for the end-application.
If this device is used in a manner outside of its specification, the protection provided by the device may be impaired.
Without additional measures to reduce the conducted emissions on the output (e.g. by using a filter), the device is not suited to supply a
local DC power network in residential, commercial and light-industrial environments. No restrictions apply for local DC power networks
in industrial environments.

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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2. INSTALLATION INSTRUCTIONS
WARNING
Risk of electrical shock, fire, personal injury or death
- Turn power off before working on the device. Protect against inadvertent re-powering.
- 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.
Obey the following installation instructions:
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 the device in an enclosure providing protection against electrical, mechanical and fire hazards.
Install the device onto a DIN-rail according to EN 60715 with the input terminals on the bottom of the device. Other mounting
orientations require a reduction in output current.
Make sure that the wiring is correct by following all local and national codes. Use appropriate copper cables that are designed for a
minimum operating temperature of 60°C for ambient temperatures up to +45°C, 75°C for ambient temperatures up to +60°C and 90°C
for ambient temperatures up to +70°C. Ensure that all strands of a stranded wire enter the terminal connection. Use ferrules for wires
on the input terminals. Unused screw terminals should be securely tightened.
The device is designed for pollution degree 2 areas in controlled environments. No condensation or frost is allowed.
The enclosure of the device provides a degree of protection of IP20. The housing does not provide protection against spilled liquids.
The device is designed as “Class of Protection I” equipment according to IEC 61140. Do not use without a proper PE (Protective Earth)
connection.
The device is suitable to be supplied from TN, TT or IT mains networks. The continuous voltage between the input terminals and the PE
potential must not exceed 300Vac.
The input can also be powered from a battery or a similar DC source. The continuous voltage between the supply voltage and the
PE/ground potential must not exceed 375Vdc.
A disconnecting means shall be provided for the input of the device.
The device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do not cover ventilation
grid!
The device is designed for altitudes up to 5000m (16400ft). Above 2000m (6560ft) a reduction in output current and over voltage
category is required.
Keep the following minimum installation clearances: 40mm on top, 20mm on the bottom, 5mm left and right side. Increase the 5mm to
15mm in case the adjacent device is a heat source. When the device is permanently loaded with less than 50%, the 5mm can be reduced
to zero.
The device is designed, tested and approved for branch circuits up to 32A (IEC) and 30A (UL) without additional protection device. If an
external fuse is utilized, do not use circuit breakers smaller than 10A B- or C-Characteristic to avoid a nuisance tripping of the circuit
breaker.
The maximum surrounding air temperature is +70°C (+158°F). The operational temperature is the same as the ambient or surrounding
air temperature and is defined 2cm below the device.
The device is designed to operate in areas between 5% and 95% relative humidity.

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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3. AC-INPUT
The device is suitable to be supplied from TN, TT or IT mains networks.
AC input
nom.
AC 100-240V
AC input range
85-264Vac
Continuous operation
264-300Vac
Occasionally for maximal 500ms
Allowed voltage L or N to earth
max.
300Vac
Continuous, according to IEC 60664-1
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 “Installation Instructions”.
AC 100V
AC 120V
AC 230V
Input current
typ.
5.15A
4.26A
2.23A
At 24V, 20A, see Fig. 3-3
Power factor
typ.
0.996
0.996
0.980
At 24V, 20A, see Fig. 3-4
Crest factor*)
typ.
1.65
1.63
1.63
At 24V, 20A, The crest factor is the
mathematical ratio of the peak value to
RMS value of the input current
waveform.
Start-up delay
typ.
450ms
450ms
450ms
See Fig. 3-2
Rise time
typ.
145ms
145ms
145ms
At 24V, 20A const. current load, 0mF
load capacitance, see Fig. 3-2
typ.
160ms
160ms
160ms
At 24V, 20A const. current load, 20mF
load capacitance, see Fig. 3-2
Turn-on overshoot
max.
200mV
200mV
200mV
In single use mode, see Fig. 3-2
Fig. 3-1 Input voltage range
Fig. 3-2 Turn-on behavior, definitions
Turn-on
85V
Rated
input range
max.
500ms
VIN
P
OUT
300Vac264V
Shut-down
Start-up
delay Rise Time
Overshoot
-5%
Output
Voltage
Input
Voltage
Fig. 3-3 Input current vs. output current at 24V output
voltage
Fig. 3-4 Power factor vs. output current at 24V output
voltage
24A
2 4 6 8 10 12 14 16 18
0
1
2
3
4
5
6A
Input Current, typ.
20 22
a)100Vac
b)120Vac
c)230Vac
b
a
c
Output Current
Power Factor, typ.
2 4 6 8 10 12 14 16 18 24A
0.75
0.8
0.85
0.9
0.95
1.0
20 22
a)100Vac
b)120Vac
c)230Vac
a,b
c
Output Current

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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4. DC-INPUT
The device is suitable to be supplied from a DC input voltage. 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.
Connect +pole to L, –pole to N and the PE terminal to an earth wire or to the machine ground.
DC input
nom.
DC 110-150V
±20%
DC input range
88-180Vdc
Continuous operation
DC input current
typ.
4.64A
At 110Vdc, at 24V, 20A
Turn-on voltage
typ.
80Vdc
Steady state value
Shut-down voltage
typ.
70Vdc
Steady state value
Fig. 4-1 Wiring for DC Input
+
-
Load
L
PE
+
-
Power Supply
AC
DC
Battery
N
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.
1A2s
1A2s
1A2s
Temperature independent
Fig. 5-1 Typical turn-on behavior at nominal load and
25°C ambient
Output
100mS/DIV
Input
230Vac
24Vdc
Input Current 5A/ DIV

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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6. OUTPUT
The output provides a SELV/PELV rated voltage, which is galvanically isolated from the input voltage.
The output is electronically protected against no-load, overload and short circuit. In case of a protection event, audible noise may occur.
The output is designed to supply any kind of loads, including inductive and capacitive loads. If capacitors with a capacitance >1F are
connected, the unit might charge the capacitor in an intermittent 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.
The device is equipped with a “Single Use / Parallel Use” feature, which can be selected on the front of the unit. The “Parallel Use” mode
regulates the output voltage in such a manner that the voltage at no load is approx. 4% higher than at nominal load. This achieves a load
sharing between power supplies when they are connected in parallel.
Output voltage
nom.
24V
Adjustment range
min.
24-28V
Guaranteed value
max.
30V
This is the maximum output voltage which can occur at the
clockwise end position of the potentiometer due to tolerances.
It is not a guaranteed value which can be achieved.
Factory setting output voltage
typ.
24.1V
±0.2% in “single use” mode at full load, cold unit
typ.
24.1V
±0.2% in “parallel use” mode at 20A, cold unit (results to 23.9V
±0.2% at 24A and 25.1V ±0.2% at no load)
Line regulation
max.
10mV
Between 85 and 300Vac input voltage change
Load regulation
max.
100mV
Between 0 and 24A in “single use” mode, static value
typ.
1000mV
Between 0 and 20A in “parallel use” mode, static value
Ripple and noise voltage
max.
50mVpp
Bandwidth 20Hz to 20MHz, 50Ohm
Output current
nom.
24A1)
At 24V and an ambient temperature below 45°C
nom.
20A
At 24V and 60°C ambient temperature
nom.
15A
At 24V and 70°C ambient temperature
nom.
20.6A1)
At 28V and an ambient temperature below 45°C
nom.
17.1A
At 28V and 60°C ambient temperature
nom.
13A
At 28V and 70°C ambient temperature
Derate linearly between +45°C and +70°C
Fuse breaking current
typ.
60A
Up to 12ms once every five seconds, see Fig. 6-4.
The fuse braking current is an enhanced transient current which
helps to trip fuses on faulty output branches. The output voltage
stays above 20V.
Overload behavior
Continuous current
For output voltage above 13Vdc, see Fig. 6-1
Intermittent current
For output voltage below 13Vdc, see Fig. 6-1
Overload/ short-circuit current
max.
29.8A
Continuous current, see Fig. 6-1
typ.
29A
Intermitted current peak value for typ. 2s
Load impedance 10mOhm, see Fig. 6-3
Discharge current of output capacitors is not included.
max.
9.8A
Intermitted current average value (R.M.S.)
Load impedance 10mOhm, see Fig. 6-3
Output capacitance
typ.
8 500µF
Included inside the power supply

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Back-feeding loads
Max.
35V
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.
1) This current is also available for temperatures up to +70°C with a duty cycle of 10% and/ or not longer than 1 minute every 10 minutes.
Fig. 6-1 Output voltage vs. output current, typ.
Fig. 6-2 Output voltage in “parallel use” mode, typ.
Output Voltage (SingleUse,typ.)
0025
4
8
12
28V
16
20
24
40A15510 20 30 35
Adjustment
Range
Output Current
A:continuouscurrent
B:intermittedcurrent
A
B
Output Voltage (Parallel Use,typ.)
22V 0 8 16
23V
24V
25V
29V
26V
27V
28V
24A20124
Adjustment
Range
Factory
setting
Output Current
Fig. 6-3 Short-circuit on output, HiccupPLUS®mode, typ.
Fig. 6-4 Dynamic overcurrent capability, typ.
Output
Current
0
29A
18s 18s
18s 2s 2s
2s
t
Short -circuit Normal
operation
Normal
operation
Output Voltage (dynamicbehavior,<12ms)
00
4
8
12
28V
16
20
24
70A3010 40 5020 60
Adjustment
Range
Output Current

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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7. HOLD-UP TIME
The hold-up time is the time during which a power supply’s output voltage remains within specification following the loss of input
power. The hold-up time is output load dependent. At no load, the hold-up time can be up to several seconds. The green DC OK lamp is
also on during this time.
AC 100V
AC 120V
AC 230V
Hold-up Time
typ.
65ms
65ms
65ms
At 24V, 10A, see Fig. 7-1
min.
54ms
54ms
54ms
At 24V, 10A, see Fig. 7-1
typ.
32ms
32ms
32ms
At 24V, 20A, see Fig. 7-1
min.
24ms
24ms
24ms
At 24V, 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
85 120 155 190 230Vac
Input Voltage
50
60
Hold-upTime
24V,20A,typ.
24V,10A,min.
24V,10A,typ.
70
24V,20A,min.
-5%
Hold-up Time
ZeroTransition
Output
Voltage
Input
Voltage
8. DC OK RELAY CONTACT
This feature monitors the output voltage on the output terminals of a running power supply.
The DC OK relay contact is not synchronized with the DC OK Led.
Contact closes
As soon as the output voltage reaches 22V.
Contact opens
As soon as the output voltage dips below 22V.
Short dips will be extended to a signal length of 100ms. Dips shorter than 1ms will be ignored.
Switching hysteresis
Typically 0.7V
Contact ratings
Maximal 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A, resistive load
Minimal permissible load: 1mA at 5Vdc
Isolation voltage
See chapter “Dielectric Strength”.
Fig. 8-1 DC OK relay contact behavior
22V
open
Output Voltage
closed

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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9. POWER SUPPLY CONDITION DISPLAY
The device has an integrated Power Supply Condition Display (PSCD), which shows power supply condition values on front of the unit.
When the power supply is powered on, all LED segments of the PSCD are switched on for 2 seconds to indicate that all segments of the
display are fully-functional.
Located on the right side of the PSCD, a Status Indicator, consisting of three LEDs, shows the basic operation status of the power supply
unit:
- Alarm by red color
- OFF by yellow color
- DC OK by green color
When the input voltage has been switched off, the output power will remain present for a short period of time until the hold-up-time
has elapsed. The internal supply for the Power Supply Condition Display lasts much longer and during that period the display will show
“OFF”flashing. After the next turn-on procedure, the PSCD shows the same menu as selected before the last turn-off sequence.
For the navigation through the Power Supply Condition Display modes, a single “Display” push-button is used.
Navigation through Real-Time and Recorded Data Mode
For data acquisition, the device includes a “Real-time Data Mode”and a “Recorded Data Mode”, both running continuously in parallel.
The “Real-time Data Mode”provides information on current operating data of the unit, while the “Recorded Data Mode”provides
stored data from previous events.
Press the Display push button repeatedly to browse through either the “Real-time Data”or the “Recorded Data”. When “PRESS 2 SEC
FOR PAGE 1 OR 2” is displayed, the modes can be selected by pressing the Display push-button longer than 2 seconds.
Available data in “Real-time Data Mode”:
- Input voltage as RMS value [V]
- Output voltage [V]
- Output current [A]
- Temperature measured close to switching power components [°C]
- Total operating hours [khrs]
Available data in “Recorded Data Mode”:
- Minimum RMS input voltage [V]
- Maximum RMS input voltage [V]
- Number of undershoot transient events on input voltage [Number of events]
- Number of over-voltage transient events on input voltage [Number of events]
- Maximum output voltage [V]
- Maximum output current [A]
- Minimum temperature measured close to switching power components [°C]
- Maximum temperature measured close to switching power components [°C]
Please note: Minimum and Maximum values will be updated continuously until reset by the user.
In the “Recorded Data Mode”each of the non-volatile stored values can be reset to current values by the user by holding the Display
push button. After 2 seconds a flashing value warns that it will be reset if the button will be kept pressed. See the following procedure:

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Error Codes
In the event of an external error, the “Alarm contact” is closed and the status indicator shows “Alarm”. Error details are displayed in the
denomination field and in the running text, which provides an error code.
- “Err2” = Over-temperature protection primary side
- “Err4” = Overload protection
- “Err5” = Over-temperature protection secondary side
- “Err6” = Output over-voltage protection
If the error is cleared, the “Power Supply Condition Display”returns to the display mode, which was selected before. The “Alarm
contact”opens and the “Alarm” indicator light goes off.
An event counter stores the number of each individual error to provide data for a later failure analysis.
Fig. 9-1 Power Supply Condition Display
Fig. 9-2 Mode loops at a glance
Fig. 9-3 Error codes

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
12/33
10.REMOTE ON /OFF FUNCTION
This feature enables the output to switch off by signal input.
A link between pin 15 and 16 turns the power supply off. Pin 15 is referenced to the (-) output voltage.
When multiple power supplies are connected in parallel, pin 15 and pin 16 are also allowed to be
paralleled to control all units with the same switch or transistor.
Please note: The remote ON/OFF function has no safety feature included.
11.“ALARM“RELAY CONTACT
This feature monitors the device and reports an over temperature, output overload, output over voltage or internal failure.
The Alarm relay contact is synchronized with the Alarm LED of the power supply condition display.
Contact closes
As soon as a failure is present.
Contact opens
As soon as the failure disappears.
Contact ratings
Maximal 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A, resistive load
Minimal permissible load: 1mA at 5Vdc
Isolation voltage
See chapter “Dielectric Strength”.
Fig. 10-1 The switch-off and the turn-on timing
Time
Output
Voltage
<1s
1s
AB A B
Pulsesshorter than 1s
will beextendedto 1s
CC
>1s
Remote
ON/OFF
15-16linked
15-16open
A: Turn-on delay according to Fig. 3-2
B: Rise time according to Fig. 3-2
C: No active discharge of the output after switch-off
16
15Remote
ON/OFF

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
13/33
12.EFFICIENCY AND POWER LOSSES
AC 100V
AC 120V
AC 230V
Efficiency
typ.
93.6%
94.2%
95.6%
At 24V, 20A
typ.
93.5%
94.1%
95.5%
At 24V, 24A (Power Boost)
Average efficiency
typ.
93.2%
93.8%
95.0%
25% at 5A, 25% at 10A,
25% at 15A. 25% at 20A
Power losses
typ.
1.5W
1.5W
1.6W
in “Remote OFF” mode
typ.
2.8W
2.8W
3.0W
At 24V, 0A
typ.
16.8W
15.7W
12.7W
At 24V, 10A
typ.
32.8W
29.6W
22.1W
At 24V, 20A
typ.
40.0W
36.1W
27.1W
At 24V, 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. 12-1 Efficiency vs. output current at 24V, typ.
Fig. 12-2 Losses vs. output current at 24V, typ.
Efficiency
4 6 8 10 12 14 18 20 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
0
10
20
30
40W
18 20410 16
Output Current
22
(a)
(b)
(c)
(a)100Vac
(b)120Vac
(c) 230Vac
35
25
15
Fig. 12-3 Efficiency vs. input voltage at 24V, 20A, typ.
Fig. 12-4 Losses vs. input voltage at 24V, 20A, typ.
Efficiency
120 180 230 264Vac
90
91
92
93
Input Voltage
94
95
96%
100
Power Losses
120 180 230 264Vac
10
15
20
25
Input Voltage
30
35
40W
100

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
14/33
13.FUNCTIONAL DIAGRAM
Fig. 13-1 Functional diagram
+
+
-
-
O u t p u t
O v e r -
V o lt a g e
P ro t e c to r
P F C
C o n v e r te r
P o w e r
C o n v e r te r
O u t p u t
F il te r
O u t p u t
P o w e r
M a n a g e r
T e m p e r -
a t u re
S h u t -
d o w n
In p u t F u s e
In p u t F il te r
In p u t R e c ti fie r
In r u sh C u r re n t
L i m i t e r
L
N
-
13
14
O u t p u t
V o lt a g e
R e g u l a t o r VO U T
D C O K C o n t a c t
D C O K L E D
D C O K
R e l a y
L i n k f o r
P a ra lle l U s e
R e m o t e
O N /O F F
17
18
L in k e d : O F F
O p e n : O N
C o n d i tio n
M o n i to r
O F F L E D
A l a r m L E D
D i s p l a y
A la r m C o n t a ct
A la r m
R e l a y
11
12
15
16
D i sp la y p u s h b u t to n

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
15/33
14.FRONT SIDE AND USER ELEMENTS
Fig. 14-1 Front side
AOutput Terminals
Three terminals for the negative and two terminals for the positive
pole. Poles are internally connected.
+ Positive output
-Negative (return) output
BInput Terminals
L Phase (Line) input
N Neutral conductor input
PE (Protective Earth) input
CPower Supply Condition Display
See description below
DOutput Voltage Adjustment Potentiometer
EDisplay Push Button
This push-button can be used to navigate through the display menus
and to select either the Real-time Mode or the Recorded Data Mode.
F Alarm Relay Contact
The alarm relay contact reports an over temperature, output
overload, output over voltage or internal failure. The Alarm relay
contact is synchronized with the Alarm LED of the power supply
condition display.
See chapter “Alarm Relay Contact”for details.
G DC OK Relay Contact
This feature monitors the output voltage on the output terminals of a
running power supply. The DC OK relay contact is synchronized with
the DC OK Led of the power supply condition display.
See chapter “DC OK Relay Contact”for details.
H Remote ON/OFF Input
Link pin 15 and 16 to turn the power supply off.
See chapter “Remote ON / OFF Function”for details.
I “Parallel Use” “Single Use” Link
Link the two terminal poles when power supplies are connected in
parallel. In order to achieve a sharing of the load current between the
individual power supplies, the “parallel use” regulates the output
voltage in such a manner that the voltage at no load is approx. 4%
higher than at nominal load.
Fig. 14-2 Power Supply Condition Display
C1 Status Indicator: Alarm, OFF, DC OK
Alarm: The red Alarm LED reports over-temperature, output overload, output over-
voltage is integrated in the power supply condition display.
OFF: The yellow OFF LED reports that the output has been switched off due to the
remote ON/OFF signal and is integrated in the power supply condition display.
DC OK: The green DC-OK LED reports an output above 22V of a running device
C2 Denomination Fields: Vin, Vout, Iout, °C, Transients and khrs
The symbol stands for transient events
See chapter “Power Supply Condition Display” for details.

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
16/33
15.CONNECTION TERMINALS
The terminals are IP20 Finger safe constructed and suitable for field- and factory wiring.
Input
Output
Signal Terminals
Type
Screw termination
Screw termination
Push-in termination
Solid wire
max. 6mm2
Max. 6mm2
Max. 1.5mm2
Stranded wire
max. 4mm2
Max. 4mm2
Max. 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

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
17/33
16.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
40 000h
51 000h
88 000h
At 24V, 20A and 40°C
111 000h
130 000h
157 000h
At 24V, 10A and 40°C
23 000h
33 000h
63 000h
At 24V, 24A and 40°C
113 000h
145 000h
248 000h
At 24V, 20A and 25°C
313 000h
368 000h
443 000h
At 24V, 10A and 25°C
66 000h
93 000h
178 000h
At 24V, 24A and 25°C
17.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 cannot 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
T.B.D.
T.B.D.
T.B.D.
At 24V, 20A and 40°C
T.B.D.
T.B.D.
T.B.D.
At 24V, 20A and 25°C
MTBF MIL HDBK 217F
T.B.D.
T.B.D.
T.B.D.
At 24V, 20A and 40°C;
Ground Benign GB40
T.B.D.
T.B.D.
T.B.D.
At 24V, 20A and 25°C;
Ground Benign GB25
T.B.D.
T.B.D.
T.B.D.
At 24V, 20A and 40°C;
Ground Fixed GF40
T.B.D.
T.B.D.
T.B.D.
At 24V, 20A and 25°C;
Ground Fixed GF25

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
18/33
18.EMC
The EMC behavior of the device is designed for applications in industrial environment as well as in residential, commercial and light
industry environments.
The device complies with EN 61000-6-1, EN 61000-6-2, EN 61000-6-3, EN 61000-6-4, EN 61000-3-2 and EN 61000-3-3.
The 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.
Without additional measures to reduce the conducted emissions on the output (e.g. by using a filter), the device is not suited to supply a
local DC power network in residential, commercial and light-industrial environments. No restrictions apply for local DC power networks
in industrial environments.
EMC Immunity
Power lines and housing
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
2.7-6GHz
20V/m
10V/m
Criterion A
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
L →N
N →PE
L →PE
2kV
4kV
4kV
Criterion A
Criterion A
Criterion A
Surge voltage on output
EN 61000-4-5
+ →-
+ →PE
- →PE
1kV
2kV
2kV
Criterion A
Criterion A
Criterion A
Conducted disturbance
EN 61000-4-6
0.15-80MHz
10V
Criterion A
Mains voltage dips
EN 61000-4-11
0% of 100Vac
40% of 100Vac
70% of 100Vac
0% of 120Vac
40% of 120Vac
70% of 120Vac
0% of 200Vac
40% of 200Vac
70% of 200Vac
0Vac, 20ms
40Vac, 200ms
70Vac, 500ms
0Vac, 20ms
48Vac, 200ms
84Vac, 500ms
0Vac, 20ms
80Vac, 200ms
140Vac, 500ms
Criterion A
Criterion C
Criterion A
Criterion A
Criterion C
Criterion A
Criterion A
Criterion A
Criterion A
Voltage interruptions
EN 61000-4-11
0V
5000ms
Criterion C
Powerful transients
VDE 0160
Over entire load range
750V, 0.3ms
Criterion A
EMC Immunity
Signal and communication lines
Fast transients (Burst)
EN 61000-4-4
Signals with coupling clamp
2kV
Criterion A
Surge voltage
EN 61000-4-5
DC OK, Alarm contact →PE
1kV
Criterion A
Performance criterions:
A: Device shows normal operation behavior within the defined limits.
C: Temporary loss of function is possible. The device may shut-down and restarts by itself. No damage or hazards for the device will occur.

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
19/33
EMC Emission
Conducted emission
input lines
EN 55011, EN 55032, FCC Part 15, CISPR 11, CISPR
32
Class B
Conducted emission
output lines
IEC/CISPR 16-1-2, IEC/CISPR 16-2-1
Limits for local DC power networks not
fulfilled.
Radiated emission
EN 55011, EN 55032, CISPR 11, CISPR 32
Class B
Harmonic input current
EN 61000-3-2 - Class A equipment
Fulfilled
EN 61000-3-2 - Class C equipment
Fulfilled in the load range from 8 to 24A
Voltage fluctuations, flicker
EN 61000-3-3
Fulfilled, tested with non-pulsing constant
current loads.
Switching Frequencies
PFC converter
100kHz
Fixed frequency
Main converter
80kHz to 140kHz
Output load dependent
Auxiliary converter
60kHz
Fixed frequency
Microcontroller
8MHz, 8MHz, 32MHz
The device utilize in total 3 microcontrollers

CP20.248
CP-Series
24V, 20A, 480W, SINGLE PHASE
May 2020 / Rev 0.1 DS-CP20.248-EN All parameters are typical values specified 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
20/33
19.ENVIRONMENT
Operational temperature
-25°C to +70°C (-13°F to 158°F)
The operational temperature is the ambient or surrounding
temperature and is defined as the air temperature 2cm
below the device.
Storage temperature
-40°C to +85°C (-40°F to 185°F)
For storage and transportation
Output de-rating
6.4W/°C
12W/°C
1.33A/1000m or 5°C/1000m
Between +45°C and +60°C (113°F to 140°F)
Between +60°C and +70°C (140°F to 158°F)
For altitudes >2000m (6560ft), see Fig. 19-2
The de-rating is not hardware controlled. The user has to take care by him-self to stay below the de-
rated current limits in order not to overload the unit.
Humidity
5 to 95% r.h.
According to IEC 60068-2-30
Atmospheric pressure
110-54kPa
See Fig. 19-2 for details
Altitude
Up to 5000m (16 400ft)
See Fig. 19-2 for details
Overvoltage category
II
According to IEC 60664-1, for altitudes up to 5000m
Impulse withstand voltage
4kV (according to overvoltage
category III)
Input to PE
According to IEC 60664-1, for altitudes up to 2000m
Degree of pollution
2
According to IEC 60664-1, not conductive
Vibration sinusoidal
2-17.8Hz: ±1.6mm
17.8-500Hz: 2g
2 hours / axis
According to IEC 60068-2-6
Shock
30g 6ms, 20g 11ms
3 bumps / direction
18 bumps in total
According to IEC 60068-2-27
Shock and vibration is 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. 19-1 Output current vs. ambient temp.
Fig. 19-2 Output current vs. altitude
AllowedOutput Current at 24V
0-25 0 45 70°C
15A
20A
24A
60
B
A
Ambient Temperature
A...90 to264Vac,continuous
B...short term
(max.60severy10minutes)
2000m 5000m
16A
20A
24A
Altitude
Allowed Output Current at 24V
B
A... Tamb < 60°C
B... Tamb < 45°C
C... Short term
A
C
AP*) 80kPa 54kPa110kPa
0m
*) Atmospheric pressure