Puls PIANO Series User manual

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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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1/20
POWER SUPPLY
AC 100-240V Wide-range Input
Active PFC
Width only 59mm
Efficiency up to 95.3%
Safe HiccupPLUS Overload Mode
Full Power Between -25°C and +55°C
DC-OK Relay Contact
3 Year Warranty
P
RODUCT
D
ESCRIPTION
These PIANO series units are extraordinarily compact,
industrial grade power supplies that focus on the
essential features needed in today’s industrial
applications. The excellent cost/performance ratio
presents many new and exciting opportunities without
compromising quality or reliability.
The unit is equipped with a wide-range input voltage
stage, many safety approvals and a wide operational
temperature range, which makes the unit applicable for
global use.
The addition of a DC-OK signal makes the unit suitable
for many industry applications such as process control,
factory automation or many other critical applications,
where preventive function monitoring can help to avoid
long downtimes.
S
HORT
-
FORM
D
ATA
Output voltage
DC 24V
Nominal
Adjustment range
24 – 28V
Factory setting 24.1V
Output current
20.0 – 17.1A
Below +55°C ambient
12.5 – 10.7A
At +70°C ambient
Derate linearly between +55°C and +70°C
Input voltage
AC AC 100-240V
±10%
Mains frequency
50-60Hz
±6%
AC Input current
4.3 / 2.3A
At 120 / 230Vac
Power factor
0.99 / 0.97
At 120 / 230Vac
AC Inrush
current 15 / 35A pk
A
t 120 / 230Vac, 40°C,
cold start
Efficiency
94.2 / 95.3%
At 120 / 230Vac
Losses
29.6 / 23.7W
At 120 / 230Vac
Hold-up time
27 / 27ms
At 120 / 230Vac
Temperature range
-25 to +70°C
Size (WxHxD)
59x124x127mm
Weight
810g / 1.97lb
O
RDER
N
UMBERS
Order number:
Power Supply PIC480.241D
M
AIN
A
PPROVALS
For details or a complete approval list see chapter 19.
IEC 62368-1
IEC 61010-1 (planned)
IEC 61010-2-201 (planned)
IND. CONT. EQ.
(planned)

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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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2/20
I
NDEX
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.......................................................8
8. DC-OK Relay Contact ..........................................8
9. Efficiency and Power Losses................................9
10. Functional Diagram...........................................10
11. Front Side and User Elements...........................10
12. Connection Terminals .......................................11
13. Lifetime Expectancy ..........................................11
14. MTBF ..................................................................11
15. EMC....................................................................12
16. Environment......................................................13
17. Safety and Protection Features ........................14
18. Dielectric Strength............................................ 15
19. Approvals and Fulfilled Standards................... 16
20. Regulatory Compliance.................................... 16
21. Physical Dimensions and Weight ..................... 17
22. Accessory........................................................... 18
22.1. YR40.242 Redundancy Module................18
22.2. PIRD20.241 Redundancy Module.............18
22.3. UF20.241 Buffer module ..........................18
23. Application Notes............................................. 19
23.1. Charging of Batteries ...............................19
23.2. Series Operation .......................................19
23.3. Parallel Use to Increase Output Power....19
23.4. Parallel Use for 1+1 Redundancy .............19
23.5. Operation on Two Phases ........................20
23.6. Use in a Tightly Sealed Enclosure ............20
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.
T
ERMINOLOGY AND
A
BREVIATIONS
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 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 100V and AC 230V parameters are valid at 50Hz mains
frequency. AC 120V parameters are valid for 60Hz 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.

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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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3/20
1. I
NTENDED
U
SE
This device is designed for installation in an enclosure and is intended for commercial use, such as in industrial control,
process control, monitoring, measurement, Audio/Video, information or communication equipment or the like.
Do not use this device in equipment where malfunction may cause severe personal injury or threaten human life.
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 industrial, residential, commercial and light-industrial environments.
If this device is used in a manner outside of its specification, the protection provided by the device may be impaired.

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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. I
NSTALLATION
I
NSTRUCTIONS
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 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.
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 +55°C and 90°C for ambient temperatures up to +70°C. Ensure that all strands of a stranded wire
enter the terminal connection. Unused screw terminals should be securely tightened. Use ferrules for wires on the
input terminals.
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 enclosure does not provide protection against
spilled liquids.
The isolation of the device is designed to withstand impulse voltages of overvoltage category III according to IEC
60664-1.
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.
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) the overvoltage category is reduced
to level II and a reduction in output current 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 20A without additional protection device. For
higher branch circuits use an additional protection device. If an external input protection device is utilized, do not use
one smaller than a 10A B- or 6A 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.

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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-I
NPUT
The device is suitable to be supplied from TN, TT or IT mains networks with AC voltage.
AC input
Nom. AC 100-240V
AC input range
Min. 90-264Vac Continuous operation
Min. 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. 81Vac Steady-state value, see Fig. 3-1
Shut
-down voltage Typ. 63Vac / 71Vac At no load / nominal load, steady-state value, see Fig. 3-1
External input protection
See recommendations in chapter 2.
AC 100V AC 120V AC 230V
Input current
Typ. 5.2A 4.3A 2.3A At 24V, 20A, see Fig. 3-3
Power factor
Typ. 0.99 0.99 0.97 At 24V, 20A, see Fig. 3-4
Crest factor
Typ. 1.6 1.7 2.0 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. 420ms 300ms 230ms See Fig. 3-2
Rise time
Typ. 100ms 100ms 100ms At 24V, 20A const. current load,
0mF load capacitance, see Fig. 3-2
Typ. 140ms 140ms 140ms At 24V, 20A const. current load,
20mF load capacitance, see Fig. 3-2
Turn
-on overshoot Max. 200mV 200mV 200mV See Fig. 3-2
Fig. 3-1 Input voltage range, typ. Fig. 3-2 Turn-on behavior, definitions
Turn-on
90V
Rated
input range
max.
500ms
V
IN
P
OUT
300Vac
264V
Shut-down
Start-up
delay Rise Time
Overshoot
- 5%
Output
Voltage
Input
Voltage
Fig. 3-3 Input current vs. output load at 24V Fig. 3-4 Power factor vs. output load
20A0 2.5 57.5 10 12.5 15 17.5
0
1
2
3
4
5
6A
Input Current, typ.
a) 100Vac
b) 120Vac
c) 230Vac
b
a
c
Output Current
Power Factor, typ.
2 4 6 8 10 12 14 16 18 20A
0.75
0.8
0.85
0.9
0.95
1.0
a) 100Vac
b) 120Vac
c) 230Vac
a, b
c
Output Current

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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-I
NPUT
Do not operate this power supply with DC-input voltage.
5. I
NPUT
I
NRUSH
C
URRENT
An active inrush limitation circuit (NTCs, which are bypassed by a relay contact) 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.
15A
peak
18A
peak
42A
peak
At 40°C, cold start
Typ. 13Apeak 13Apeak 25Apeak At 25°C, cold start
Typ. 13Apeak 15Apeak 35Apeak At 40°C, cold start
Inrush energy
Max.
3A²s
3A²s
3A²s
At 40°C, cold start
Fig. 5-1 Typical turn-on behaviour at nominal load, 120Vac
input and 25°C ambient
Fig. 5-2 Typical turn-on behaviour at nominal load, 230Vac
input and 25°C ambient
20ms/DIV
Input voltage 500V/DIV
Output
voltage
Input current
5A/DIV
Ipeak = 13A

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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. O
UTPUT
The output provides a SELV/PELV rated voltage, which is galvanically isolated from the input voltage.
The output is designed to supply any kind of loads, including capacitive and inductive loads. If extreme large
capacitors, such as EDLCs (electric double layer capacitors or “UltraCaps”) with a capacitance > 3F are connected to the
output, the unit might charge the capacitor in an intermittent mode.
The output is electronically protected against overload, no-load and short-circuits. In case of a protection event,
audible noise may occur.
Output voltage
Nom.
DC 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 settings
Typ. 24.1V ±0.2%, at full load and cold unit
Line
regulation Max. 10mV Between 90 and 300Vac
Load regulation
Max. 100mV Between 0A and 20A, static value, see Fig. 6-1
Ripple and noise voltage
Max. 100mVpp Bandwidth 20Hz to 20MHz, 50Ohm
Output current
Nom. 20.0A At 24V and an ambient temperature below 55°C
Nom.
12.5A
At 24V and 70°C ambient temperature
Nom. 17.1A At 28V and an ambient temperature below 55°C
Nom. 10.7A At 28V and 70°C ambient temperature
Derate linearly between +55°C and +70°
Overload behaviour
Continuous current For output voltage above 13Vdc, see Fig. 6-1
Intermittent current1) For output voltage below 13Vdc, see Fig. 6-1
Overload/ short
-circuit current Max. 27.5A Continuous current, see Fig. 6-1
Typ. 30A Intermittent current peak value for typ. 1s
Load impedance 50mOhm, see Fig. 6-2
Discharge current of output capacitors is not included.
Max. 11A Intermittent current average value (R.M.S.)
Load impedance 50mOhm, see Fig. 6-2
Output capacitance
Typ. 6 800µF Included inside the power supply
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) At heavy overloads (when output voltage falls below 13V), the power supply delivers continuous output current for 2-5s. After this, the
output is switched off for approx. 7s before a new start attempt with duration of 1s is automatically performed. This cycle is repeated as
long as the overload exists. If the overload has been cleared, the device will operate normally.
Fig. 6-1 Output voltage vs. output current, typ. Fig. 6-2 Short-circuit on output, intermittent current, typ.
Output voltage
30A
24V
Output current
13V
0V 5A 10A 15A 25A0A
Adjustment range
28V
A
B
20A
A: continuous current
B: intermittent current
Output
Current
0
30A
7s 7s
7s 1s 1s
2-5s
t
Short -circuit Normal
operation
Normal
operation
First
pulse

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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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8/20
7. H
OLD
-
UP
T
IME
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. 54ms 54ms 54ms At 24V, 10A, see Fig. 7-1
min. 44ms 44ms 44ms At 24V, 10A, see Fig. 7-1
typ. 27ms 27ms 27ms At 24V, 20A, see Fig. 7-1
min. 22ms 22ms 22ms 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
60ms
85 120 155 190 230Vac
Input Voltage
40
50
Hold-up Time
24V, 20A, typ.
24V, 10A, min.
24V, 10A, typ.
24V, 20A, min.
- 5%
Hold-up Time
Zero Transition
Output
Voltage
Input
Voltage
8. DC-OK
R
ELAY
C
ONTACT
This feature monitors the output voltage on the output terminals of a running power supply.
Contact closes
As soon as the output voltage reaches 22V.
Contact opens
As soon as the output voltage falls below 22V.
Switching hysteresis
Typically 0.3V
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 section 18.
Fig. 8-1 DC-ok relay contact behavior
22V
open
Output Voltage
closed

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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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9/20
9. E
FFICIENCY AND
P
OWER
L
OSSES
AC 100V AC 120V AC 230V
Efficiency
Typ.
93.6%
94.2%
95.3%
At 24V, 20A
Average efficiency
*) Typ. 93.4% 93.8% 94.5% 25% at 5A, 25% at 10A,
25% at 15A, 25% at 20A
Power losses
Typ. 5.7W 4.6W 3.5W At 24V, 0A
Typ. 15.6W 14.8W 13.2W At 24V, 10A
Typ. 32.8W 29.6W 23.7W At 24V, 20A
*) 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 at 24V,
typ.
Fig. 9-2 Losses vs. output current at 24V, typ.
Efficiency
4 6 8 10 12 14 16 18 20A
88
89
90
91
92
93
Output Current
94
95
96%
(a)
(b)
(c)
(a) 100Vac
(b) 120Vac
(c) 230Vac
Power Losses
0 2 4 6 8 10 12 14 20A
10
0
20
30
40W
16 18
Output Current
(a)
(b)
(c)
(a) 100Vac
(b) 120Vac
(c) 230Vac
Fig. 9-3 Efficiency vs. input voltage at 24V,
20A, typ.
Fig. 9-4 Losses vs. input voltage at 24V, 20A,
typ.
Efficiency
85 120 155 190 225 260Vac
90
91
92
93
Input Voltage
94
95
96%
Power Losses
0
20
30
40W
85 120 155 190 225 260Vac
Input Voltage
10

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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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10/20
10. F
UNCTIONAL
D
IAGRAM
Fig. 10-1 Functional diagram
+
+
-
-
Output
Over-
Voltage
Protection
PFC
Converter
Output
Voltage
Regulator
Power
Converter
Output
Filter
Temper-
ature
Shut-
down
Input Fuse
Input Filter
Input Rectifier
Inrush Current Limiter
V
OUT
L
N
DC-ok
Contact
DC-ok
LED
DC-ok
Relay
11. F
RONT
S
IDE AND
U
SER
E
LEMENTS
Fig. 11-1 Front side
A Input Terminals
N, L Line input
PE (Protective Earth) input
B Output Terminals
Two identical + poles and two identical - poles
+ Positive output
–Negative (return) output
C DC-OK LED (green)
On, when the output voltage is above 18V.
D Output Voltage Adjustment Potentiometer
E DC-OK Relay Contact
The DC-OK relay contact is not synchronized with the DC-OK LED.
See chapter 8 for details.

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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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11/20
12. C
ONNECTION
T
ERMINALS
The terminals are IP20 finger safe constructed and suitable for field- and factory wiring.
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
13. L
IFETIME
E
XPECTANCY
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
72 000h 79 000h 102 000h At 24V, 20A and 40°C
167 000h
171 000h
197 000h
At 24V, 10A and 40°C
203 000h 223 000h 288 000h At 24V, 20A and 25°C
472 000h 485 000h 557 000h At 24V, 10A and 25°C
14. 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
595 000h
611 000h
704 000h
At 24V, 20A and 40°C
1 090 000h 1 116 000h 1 252 000h At 24V, 20A and 25°C
MTBF MIL HDBK 217F
274 000h 275 000h 289 000h At 24V, 20A and 40°C, Ground Benign GB40
368 000h 370 000h 386 000h At 24V, 20A and 25°C, Ground Benign GB25
59 000h 59 000h 63 000h At 24V, 20A and 40°C, Ground Fixed GF40
76 000h 76 000h 80 000h At 24V, 20A and 25°C, Ground Fixed GF25

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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
12/20
15. 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.
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 industrial, residential, commercial and light-industrial environments.
EMC Immunity
Electrostatic discharge
EN 61000-4-2 Contact discharge
Air discharge
8kV
8kV
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 N
L PE, N PE
2kV
4kV
Criterion A
Criterion A
Surge voltage on output
EN 61000-4-5 + -
+ / - PE
1kV
2kV
Criterion A
Criterion A
Surge voltage on DC
-OK EN 61000-4-5 DC-OK signal PE 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 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
Performance criterions:
A: The 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.
EMC Emission
Conducted emission
input lines
EN 55011, EN 55022, FCC Part 15, CISPR 11, CISPR 22 Class B
C
onducted emission
output lines
IEC/CISPR 16-1-2, IEC/CISPR 16-2-1 Limits for DC power port acc.
EN 61000-6-3 not fulfilled
Radiated emission
EN 55011, EN 55022 Class B
Harmonic input current
EN 61000-3-2 Fulfilled, Class A limits
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.
Switching frequencies:
PFC
converter 80kHz to 130kHz Input voltage and load dependent
Main converter
75kHz to 180kHz Output voltage and load dependent
Auxiliary converter
60kHz
Fixed frequency

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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
13/20
16. E
NVIRONMENT
Operational temperature
-25°C to +70°C (-13°F to 158°F) Operational temperature is the same as the ambient
or surrounding temperature and is defined as the air
temperature 2cm below the unit.
Storage temperature
-40°C to +85°C (-40°F to 185°F) For storage and transportation
Output de
-rating 12W/°C
30W/1000m or 5°C/1000m
Between +55°C and +70°C (131°F to 140°F)
For altitudes >2000m (6560ft), see Fig. 16-2
The de-rating is not hardware controlled. The user has to take this into consideration 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. 16-2 for details
Altitude
Up to 5000m (16 400ft)
See Fig. 16-2 for details
Over
-voltage category II According to IEC 60664-1, for altitudes up to 5000m
Impulse withstand voltages
4kV (according to over-voltage
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 per 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.
LABS compatibility
As a rule, only non-silicon precipitating materials are used. The unit conforms to the
LABS criteria and is suitable for use in paint shops.
Corrosive gases
Tested according to ISA-71.04-1985, Severity Level G3 and IEC 60068-2-60 Test Ke
Method 4 for a service life of minimum 10years in these environments.
Audible noise
Some audible noise may be emitted from the power supply during no load, overload or
short circuit.
Fig. 16-1 Output current vs. ambient temp. Fig. 16-2 Output current vs. altitude
0
0+70°C
20A
+55
Allowed Output Current at 24V
12.5A
Ambient Temperature
-25
2000m 5000m
18.8A
16.3A
20.0A
Altitude
Allowed Output Current at 24V
B
A
AP*) 80kPa 54kPa 110kPa
0m
*) Atmospheric pressure
A... Tamb < 45°C
B... Tamb < 55°C
4000m
62kPa

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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
14/20
17. S
AFETY AND
P
ROTECTION
F
EATURES
Isolation resistance
Min. 500MOhm At delivered condition between input and output,
measured with 500Vdc
Min. 500MOhm At delivered condition between input and PE,
measured with 500Vdc
Min. 500MOhm At delivered condition between output and PE,
measured with 500Vdc
Min. 500MOhm At delivered condition between output and DC-OK
contacts, measured with 500Vdc
PE resistance
Max. 0.1Ohm Resistance between PE terminal and the housing in
the area of the DIN-rail mounting bracket.
Output over
-voltage protection Typ. 30.5Vdc
Max. 32.0Vdc
In case of an internal defect, a redundant circuit limits the maximum output
voltage. The output shuts down and automatically attempts to restart.
Class of protection
I According to IEC 61140
A PE (Protective Earth) connection is required
Ingress
protection IP 20 According to EN/IEC 60529
Over
-temperature protection Included Output shut-down with automatic restart.
Temperature sensors are installed on critical
components inside the unit and turn the unit off in
safety critical situations, which can happen e.g. when
ambient temperature is too high, ventilation is
obstructed or the de-rating requirements are 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.
Input transient protection
MOV (Metal Oxide
Varistor)
For protection values see chapter 15 (EMC).
Internal input fuse
Included Not user replaceable slow-blow high-braking
capacity fuse
Touch current (leakage current)
Typ. 0.12mA / 0.30mA At 100Vac, 50Hz, TN-,TT-mains / IT-mains
Typ. 0.17mA / 0.45mA At 120Vac, 60Hz, TN-,TT-mains / IT-mains
Typ. 0.27mA / 0.71mA At 230Vac, 50Hz, TN-,TT-mains / IT-mains
Max. 0.15mA / 0.38mA At 110Vac, 50Hz, TN-,TT-mains / IT-mains
Max. 0.21mA / 0.56mA At 132Vac, 60Hz, TN-,TT-mains / IT-mains
Max. 0.35mA / 0.91mA At 264Vac, 50Hz, TN-,TT-mains / IT-mains

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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
15/20
18. D
IELECTRIC
S
TRENGTH
The output voltage is floating and has no ohmic connection to the ground.
The output is insulated to the input by a double or reinforced insulation.
Type and routine 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.
We recommend that either the + pole or the – pole 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.
Fig. 18-1 Dielectric strength A B C D
A D
C
B
B *)
N
L
Input DC-ok
Earth, PE Output
-
+
Type test
60s
2500Vac
3000Vac
500Vac
500Vac
Routine test 5s 2500Vac 2500Vac 500Vac 500Vac
Field test 5s 2000Vac 2000Vac 500Vac 500Vac
Field test cut-off
current settings
> 10mA
> 10mA
> 20mA
> 1mA
B*)
When testing input to DC-OK ensure that the maximal 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.

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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
16/20
19. A
PPROVALS AND
F
ULFILLED
S
TANDARDS
IEC 61010
(planned)
CB Scheme Certificate
IEC 61010-2-201 Electrical Equipment for Measurement, Control
and Laboratory Use - Particular requirements for control
equipment
IEC 62368
CB Scheme Certificate
IEC 62368-1 Audio/video, information and communication
technology equipment - Safety requirements
Output safety level: ES1
UL 61010
-2-201
(former UL 508)
(planned)
Ind. Cont. Eq.
UL Certificate
Listed equipment for category NMTR - UL 61010-2-201 Electrical
Equipment for Measurement, Control and Laboratory Use -
Particular requirements for control equipment
Applicable for US and Canada
E-File: E198865
20. R
EGULATORY
C
OMPLIANCE
CE
EU Declaration of Conformity
Trade conformity assessment for Europe
The CE mark indicates conformance with the European
- RoHS directive,
- EMC directive and the
- Low-voltage directive (LVD)
REACH Directive
Manufacturer's Statement
EU-Regulation regarding the Registration, Evaluation,
Authorisation and Restriction of Chemicals
WEEE Directive
Manufacturer's Statement
EU-Directive on Waste Electrical and Electronic Equipment
RoHS (China RoHS 2)
Manufacturer's Statement
Administrative Measures for the Restriction of the Use of
Hazardous Substances in Electrical and Electronic Products
25 years
EAC
EAC Certificate
EAC EurAsian Conformity - Registration Russia, Kazakhstan and
Belarus

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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
17/20
21. P
HYSICAL
D
IMENSIONS AND
W
EIGHT
Width
59mm 2.32’’
Height
124mm 4.88’’
Depth
127mm 5.0’’
The DIN-rail height must be added to the unit depth to calculate the total required
installation depth.
Weight
810g / 1.79lb
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
Penetration protection
Small parts like screws, nuts, etc. with a diameter larger than 4.5mm
Fig. 21-1 Front view Fig. 21-2 Side view
All dimensions in mm
All dimensions in mm

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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
18/20
22. A
CCESSORY
22.1. YR40.242 REDUNDANCY MODULE
The YR40.242 is a dual redundancy module, which can be used to build 1+1 or N+1 redundant
systems.
The device is equipped with two 20A nominal input channels, which are individually decoupled by
utilizing MOSFET technology. The output can be loaded with a nominal 40A continuous current.
Using MOSFETSs instead of diodes reduces heat generation, losses and voltage drop between input
and output. Due to these advantages, the unit is very narrow and only requires 36mm width on the
DIN-rail.
The device does not require an additional auxiliary voltage and is self-powered even in case of a
short circuit across the output. It requires suitable power supplies on the input, where the sum of the
continuous short circuit current stays below 26A. This is typically achieved when the power supplies
are featured with an intermittent overload behavior (Hiccup Mode).
See chapter 23.4 for wiring information.
22.2. PIRD20.241 REDUNDANCY MODULE
The PIRD20.241 is a dual redundancy module, which can be used to build 1+1 or N+1 redundant
systems.
The device is equipped with two 10A nominal input channels, which are individually decoupled by
utilizing diode technology. The output can be loaded with a nominal 20A continuous current.
The device does not require an additional auxiliary voltage and is self-powered even in case of a
short circuit across the output.
The unit is very narrow and only requires 39mm width on the DIN-rail.
See chapter 23.4 for wiring information.
22.3. UF20.241 BUFFER MODULE
The UF20.241 buffer module is a supplementary device for DC 24V power supplies. It delivers
power to bridge typical mains failures or extends the hold-up time after the AC power is turned
off.
When the power supply provides a sufficient voltage, the buffer module stores energy in the
integrated electrolytic capacitors. When the mains voltage is lost, the stored energy is released to
the DC-bus in a regulated process.
The buffer module can be added in parallel to the load circuit at any given point and does not
require any control wiring.
One buffer module can deliver 20A additional current and can be added in parallel to increase
the output ampacity or the hold-up time.
For longer hold-up times the UF40.241 might also be an option.

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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
19/20
23. A
PPLICATION
N
OTES
23.1. CHARGING OF BATTERIES
Do not use the power supply to charge batteries.
23.2. SERIES OPERATION
Devices of the same type can be connected in series for higher output
voltages. It is possible to connect as many units in series as needed, providing
the sum of the output voltage does not exceed 150Vdc. Voltages with a
potential above 60Vdc must be installed with a protection against touching.
Avoid return voltage (e.g. from a decelerating motor or battery) which is
applied to the output terminals.
Keep an installation clearance of 15mm (left / right) between two power
supplies and avoid installing the power supplies on top of each other. Do
not use power supplies in series in mounting orientations other than the
standard mounting orientation.
Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple devices.
23.3. PARALLEL USE TO INCREASE OUTPUT POWER
Do not use the power supply in parallel to increase the output power.
23.4. PARALLEL USE FOR 1+1 REDUNDANCY
The device can be used to built 1+1 redundant systems.
1+1 Redundancy:
Devices can be paralleled for redundancy to gain higher system availability. Redundant systems require a certain
amount of extra power to support the load in case one device fails. The simplest way is to put two devices in parallel.
This is called a 1+1 redundancy. In case one device fails, the other one is automatically able to support the load current
without any interruption. It is essential to use a redundancy module to decouple devices from each other. This
prevents that the defective unit becomes a load for the other device and the output voltage cannot be maintained any
more.
1+1 redundancy allows ambient temperatures up to +70°C.
Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple devices.
Recommendations for building redundant power systems:
- Use separate input fuses for each device.
- Use separate mains systems for each device whenever it is possible.
- Monitor the individual devices. Therefore, use the DC-OK signal of the device.
- It is desirable to set the output voltages of all devices to the same value (± 100mV) or leave it at the factory setting.
Unit A
AC
DC
Unit B
AC
DC
-
+
-
+
Load
+
-
Earth
(see notes)

PIC480.241D
PIANO-Series
24V, 20A, 480W, SINGLE PHASE INPUT
Dez. 2019 / Rev. 1.0 DS-PIC480.241D-EN (MR1-RP22G) 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
20/20
Wiring examples:
Fig. 23-1 1+1 Redundant wiring with 1 YR40.242 Fig. 23-2 1+1 Redundant wiring with 2 PIRD20.241
L
N
PE
20A
Load Failure
Monitor
I
YR40.242
Redundancy
Module
Output
Input
1
Input
2
++
--
+-
I
Power
Supply
24V,20A
DC-
OK
+ + --
L N PE
Output
Input
o
o
Power
Supply
24V,20A
DC-
OK
+ + - -
L N PE
Output
Input
o
o
Optionally a YR40.241 can be used, which has the input terminals
on top and output on bottom
L
N
PE
20A
Load
Failure
Monitor
I
PIRD20.241
Redundancy
Module
Output
Input
1
Input
2
++
-
-
+
-
+
I
Power
Supply
24V,20A
DC-
OK
+ +
--
L N PE
Output
Input
o
o
Power
Supply
24V,20A
DC-
OK
+ +
- -
L N PE
Output
Input
o
o
PIRD20.241
Redundancy
Module
Output
Input
1
Input
2
++
--
+
-
+
23.5. OPERATION ON TWO PHASES
The power supply can also be used on two-phases of a three-phase-system.
Such a phase-to-phase connection is allowed as long as the supplying
voltage is below 240V+10%.
Ensure that the wire, which is connected to the N-terminal, is
appropriately fused.
The maximum allowed voltage between a Phase and the PE must be
below 300Vac.
23.6. USE IN A TIGHTLY SEALED ENCLOSURE
When the power supply is installed in a tightly sealed enclosure, the temperature inside the enclosure will be higher
than outside. In such situations, the inside temperature defines the ambient temperature for the power supply.
The following measurement results can be used as a reference to estimate the temperature rise inside the enclosure.
The power supply is placed in the middle of the box, no other heat producing items are inside the box
The temperature sensor inside the box is placed in the middle of the right side of the power supply with a distance of
1cm.
The following measurement results can be used as a reference to estimate the temperature rise inside the enclosure.
Case A Case B
Enclosure size
180x180x165mm
Rittal Typ IP66 Box
PK 9519 100, plastic
180x180x165mm
Rittal Typ IP66 Box
PK 9519 100, plastic
Input voltage
230Vac 230Vac
Load
24V, 16A; (=80%) 24V, 20A; (=100%)
Temperature inside the box
48.3°C 55.3°C
Temperature outside the box
21.0°C 21.0°C
Temperature rise
27.3K
34.3K
240V
+10%
max.
L2
L1
L3
L
N
PE
Power Supply
AC
DC