PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

POWER SUPPLY










AC 200-240V Regional Input
Cost Optimized without Compromising Quality or
Reliability
Optional with Conformal Coated PC-Boards
Active PFC
Width only 49mm
Efficiency 95.7%
Full Power Between -25°C and +55°C
DC-OK Relay Contact Included
3 Year Warranty

GENERAL DESCRIPTIONSHORT-FORM DATA

These PIANO series units are extraordinarily compact,industrial grade power supplies that focus on theessential features needed in today’s industrial
applications. The excellent cost/performance ratio
presents many new and exciting opportunities withoutcompromising quality or reliability.

Output voltage
Adjustment range
Output current

The mechanically robust housing is made of a highgrade, reinforced molded material, which permits theunits to be used in surrounding temperatures up to
70°C.
Since typical industrial applications do not require
multiple mains inputs, the reduction to a regional input
voltage range (AC 200-240V) simplifies the circuitry andhas significant advantages for reliability, efficiency andcost.
The addition of a DC-OK signal makes the unit suitable
for many industry applications such as: process,automation and many other critical applications where
preventive function monitoring can help to avoid long
downtimes.
The PIC480.241C-C1 device is the same as
PIC480.241C but with conformal coated pc-boards.

the

ORDER NUMBERS
Power Supply

Accessory

PIC480.241C
PIC480.241C-C1
YR40.242
PIRD20.241

DC 24V24 - 28V
20A
15A
17.1A
12.8A
Output power
480W
360W
Output ripple< 100mVpp
AC Input voltage
AC 200-240V
Mains frequency
50-60HzAC Input current
2.2A
Power factor
0.99
AC Inrush current
26A peakEfficiency
95.7%
Losses
21.6W
Temperature range -25°C to +70°C
Derating
8W/°C
Hold-up time
30ms
Dimensions
49x124x124mm
Weight620g / 1.37lb

at 24V, amb <55°C
at 24V, amb <70°C
at 28V, amb <55°C
at 28V, amb <70°C
ambient <55°C
ambient <70°C
20Hz to 20MHz±10%±6%
at 230Vac
at 230Vac
at 230Vac, 40°C
at 230Vac
at 230Vac
operational+55 to +70°C
at 230Vac
WxHxD

MARKINGSWith conformal
coated pc-boards
Redundancy module
Redundancy module

IEC 61010-2-201

UL 61010-2-201

Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

IEC 62368

1/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

INDEX
Page
1. Intended Use .......................................................3
2. Installation Instructions ......................................3
3. AC-Input...............................................................4
4. DC-Input...............................................................5
5. Input Inrush Current ...........................................5
6. Output .................................................................6
7. Hold-up Time .......................................................7
8. DC-OK Relay Contact ..........................................7
9. Efficiency and Power Losses................................8
10. Lifetime Expectancy and MTBF...........................8
11. Functional Diagram .............................................912. Terminals and Wiring ..........................................9
13. Front Side and User Elements ...........................10
14. EMC ....................................................................11
15. Environment ......................................................12
16. Safety and Protection Features ........................13
17. Dielectric Strength ............................................14Page
18. Approvals and Fulfilled Standards ................... 15
19. Regulatory Compliance .................................... 15
20. Physical Dimensions and Weight ..................... 16
21. Accessory ........................................................... 17
21.1. YR40.242 Redundancy Module ................ 17
21.2. PIRD20.241 Redundancy Module ............. 17
22. Application Notes ............................................. 18
22.1. Back-feeding Loads .................................. 18
22.2. External Input Protection ......................... 18
22.3. Parallel Use to Increase Output Power .... 18
22.4. Parallel Use for 1+1 Redundancy ............. 18
22.5. Series Operation ....................................... 19
22.6. Inductive and Capacitive Loads................ 19
22.7. Charging of Batteries ............................... 19
22.8. Operation on Two Phases ........................ 19
22.9. Use in a Tightly Sealed Enclosure ............ 19

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 theword. As the state of our knowledge and experience is constantly changing, the information in this data sheet issubject to revision. We therefore kindly ask you to always use the latest issue of this document (available underwww.pulspower.com). No part of this document may be reproduced or utilized in any form without our priorpermission in writing.

TERMINOLOGY AND ABREVIATIONSPE andsymbolPE 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 withstandard tolerances (usually ±15%) included.
E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V)

230VacA 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.

shouldA key word indicating flexibility of choice with a strongly preferred implementation.

Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

2/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

1. INTENDED USEThis 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.
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 industrial, residential, commercial and light-industrial environments

2. INSTALLATION INSTRUCTIONSWARNING-

Risk of electrical shock, fire, personal injury or death.

Turn power off before working on the device and protect against inadvertent re-powering.
Do not open, modify or repair the device.
Use caution to prevent any foreign objects from entering into the housing.
Do not use in wet locations or in areas where moisture or condensation can be expected.
Do not touch during power-on, and immediately after power-off. Hot surface may cause burns.

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 thefactory 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 aredesigned 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.
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 spilledliquids.
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 coverventilation 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.
Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

3/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

3. AC-INPUT
AC input
AC input range

nom.

Allowed voltage L or N to earth
Input frequency
Turn-on voltage
Shut-down voltage
External input protection

AC 200-240V
suitable for TN-, TT- and IT mains networks
180-264Vac
continuous operation
264-300Vac< 500msmax.
300Vaccontinuous, IEC 62103
nom.
50–60Hz±6%
typ.
150Vacsteady-state value, see Fig. 3-1
typ.
130Vacsteady-state value, see Fig. 3-1
See recommendations in chapter 23.3.

Input current
Power factor*)
Crest factor**)Start-up delay
Rise time

typ.
typ.
typ.
typ.
typ.

2.2A
0.99
1.6
400ms
60ms

typ.

240ms

max.

200mV

Turn-on overshootat 24V, 20A, 230Vac, see Fig. 3-3
at 24V, 20A, 230Vac, see Fig. 3-4
at 24V, 20A, 230Vac
see Fig. 3-2
at 24V, 20A const. current load, 0mF load capacitance,
see Fig. 3-2
at 24V, 20A const. current load, 20mF load capacitance,
see Fig. 3-2
resistive load, 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.

Rated
input range

max.
500ms

Turn-onShut-down

POUT

Fig. 3-2 Turn-on behavior, definitions

Input
Voltage- 5%

OutputVoltage

VIN
180V

Start-up
delay

264V 300Vac

Fig. 3-3 Input current vs. output load at 24V

Fig. 3-4 Power factor vs. output load

Input Current, typ.

Power Factor, typ.

2.5

0.98

2.0

0.96

1.5

0.94

1.0

0.92

1.00

3A

0.5

Output Current

0
0

2

4

6

Rise
Time

OvershootFig. 3-1 Input voltage range, typ.

8 10 12 14 16 18 20A

0.90

Output Current

0.88
2

4

6

8 10 12 14 16 18 20A

Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

4/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

4. DC-INPUT
Do not operate this power supply with DC-input voltage.

5. INPUT INRUSH CURRENTA NTC inrush limiter, which is bypassed by a relay contact during normal operation, limits the input inrush current
after turn-on of the input voltage.
Inrush current*)

Inrush energy*)
*)

max.
typ.
typ.
max.

32Apeak
26Apeak
16Apeak
2.1A2s

40°C ambient, 230Vac, cold start
40°C ambient, 230Vac, cold start
25°C ambient, 230Vac, cold start
40°C ambient, 230Vac, cold start

The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on.
Fig. 5-1 Input inrush current, typical behavior
230Vac input, 24V, 20A output, 25°C ambient

Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

5/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

6. OUTPUT
Output voltage
Adjustment range

nom.

Short-circuit current

min.
max.
typ.

DC 24V
24-28V
30V***)
24.1V
50mV
150mV
100mVpp
20A
15A
17.1A
12.8A
480W
360W
cont. current
HiccupPLUS mode**)
21A*)
25A*)
8.1A

Output capacitancetyp.

4 300µF

max.
typ.
max.
max.
max.
nom.
nom.
nom.
nom.
nom.
nom.

Factory settings
Line regulation
Load regulation
Ripple and noise voltage
Output current

Output power
Overload behaviour

*)
**)

***)

guaranteed
at clockwise end position of potentiometer±0.2%, at full load, cold unit
187-264Vac
static value, 0A  20A; see Fig. 6-1
20Hz to 20MHz, 50Ohm
at 24V, ambient temperature <55°C, see Fig. 6-1
at 24V, ambient temperature <70°C, see Fig. 6-1
at 28V, ambient temperature <55°C, see Fig. 6-1
at 28V, ambient temperature <70°C, see Fig. 6-1
ambient temperature <55°C
ambient temperature <70°C
output voltage > 13.5Vdc, see Fig. 6-1
output voltage < 13.5Vdc, see Fig. 6-1
load impedance 50mOhm, see Fig. 6-1
load impedance 50mOhm, see Fig. 6-1
average (R.M.S.) current, load impedance 50mOhm,
see Fig. 6-1
included inside the power supply

Discharge current of output capacitors is not included.
HiccupPLUS ModeAt heavy overloads (when output voltage falls below 13.5V), the power supply delivers continuous output current for 5s. After this, theoutput is switched off for approx. 8s before a new start attempts with duration of 1s are automatically performed. This cycle isrepeated as long as the overload exists. If the overload has been cleared, the device will operate normally.
This is the maximum output voltage which can occur at the clockwise end position of the potentiometer due to tolerances. It is notguaranteed value which can be achieved. The typical value is about 28.5V.
Fig. 6-1
Output voltage vs. output current, typ.
Output Voltage

Adjustment
Range

28V

Continuous
current

24
20

Fig. 6-2
Short-circuit (50mOhm) on output, HiccupPLUS mode, typ.
OutputCurrent

Normaloperation

Normaloperation

Short -circuit

23A

16

First
pulse: 5s

12
HiccupPLUS
mode

8
4
0

Output Current

0

5

10

15

20

t

0
5s

25

8s

1s

8s

1s

8s

30A

Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

6/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

7. HOLD-UP TIME
Hold-up Time

typ.
min.
typ.
min.

65ms
55ms
30ms
23ms

Fig. 7-1 Hold-up time vs. input voltage
Hold-up Time

80ms
70
60
50
40
30
20
10
0
102 120

at 24V, 10A, 230Vac, see Fig. 7-1
at 24V, 10A, 230Vac, see Fig. 7-1
at 24V, 20A, 230Vac, see Fig. 7-1
at 24V, 20A, 230Vac, see Fig. 7-1
Fig. 7-2 Shut-down behavior, definitionsa) 24V 10A typ. c) 24V 20A typ.
b) 24V 10A min. d) 24V 20A min.

a
b
c
d

Zero Transition
Input
Voltage

Hold-up Time

Input Voltage

155

190

- 5%

OutputVoltage

230Vac8. DC-OK RELAY CONTACT
This feature monitors the output voltage, which is produced by the power supply itself. It is independent of a back-fed
voltage from a unit connected in parallel to the power supply output (e.g. redundant application).
Threshold voltage
Contact closes
Contact opens
Contact ratings
Isolation voltage

typ.
21.4V (fixed)
As soon as the output voltage reaches 21.4V.
As soon as the output voltage falls below 21.4V.
max.
60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A
resistive loadmin.
1mA at 5Vdc
min. permissible load
See dielectric strength table in section 18.

Fig. 8-1 DC-ok relay contact behavior
Output Voltage
21.4V

open

closedMar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

7/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

9. EFFICIENCY AND POWER LOSSES
Efficiency
Average efficiency*)
Power losses

*)

typ.
typ.
typ.
typ.
typ.

95.7%
95.2%
1.35W
10.7W
21.6W

at 24V, 20A, 230Vac
25% at 5A, 25% at 10A, 25% at 15A. 25% at 20A
at 24V, 0A, 230Vac
at 24V, 10A, 230Vac
at 24V, 20A, 230Vac

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.
Power Losses

Efficiency

97%

24W

96

20

95

16

94

12

93

8
4

92
Output Current

91
4

6

8

10

12

14

16

Output Current

00

18 20A

2

4

6

8 10 12 14 16 18 20A

10. LIFETIME EXPECTANCY AND MTBF
Lifetime expectancy*)

MTBF**) SN 29500, IEC 61709
MTBF**) MIL HDBK 217F

93 000h
264 000h*)
51 000h
144 000h*)
482 000h
894 000h
207 000h
279 000h
45 000h
57 000hat 24V, 10A and 40°C, 230Vac
at 24V, 10A and 25°C, 230Vac
at 24V, 20A and 40°C, 230Vac
at 24V, 20A and 25°C, 230Vac
at 24V, 20A and 40°C, 230Vac
at 24V, 20A and 25°C, 230Vac
at 24V, 20A and 40°C, 230Vac;
Ground Benign GB40
at 24V, 20A and 25°C, 230Vac;
Ground Benign GB25
at 24V, 20A and 40°C, 230Vac;
Ground Fixed GF40
at 24V, 20A and 25°C, 230Vac;
Ground Fixed GF25

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 thecapacitor’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.
**) MTBF stands for Mean Time Between Failure, which is calculated according to statistical device failures, and indicates reliability of adevice. 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 thatstatistically 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.
*)Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

8/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

11. FUNCTIONAL DIAGRAM
Fig. 11-1 Functional diagram

L
N

Input Fuse
Input Filter
Input Rectifier
Inrush Current Limiter

Temperature
Shutdown

PFC
ConverterPower
Converter

OutputOverVoltage
Protection

OutputFilter

+
+
-

DC-ok
Relay

DC-ok
Contact
DC-ok
LED

OutputVoltage
Regulator

VOUT

12. TERMINALS AND WIRING
The terminals are IP20 finger safe constructed and suitable for field- and factory wiring.
Type
Solid wire
Stranded wire
American Wire Gauge
Maximal wire diameter
Wire stripping length
Screwdriver
Recommended tightening torque

Input and output
Screw terminals
max. 6mm2
max. 4mm2
AWG20-10
2.8mm (including ferrules)
7mm / 0.28inch
3.5mm slotted or cross-head No 2
1Nm, 9lb.in

DC-OK-Signal
Push-in terminals
max. 1.5mm2
max. 1.5mm2
AWG28-16
1.6mm (including ferrules)
7mm / 0.28inch
not required
not applicable

Instructions:a) Use appropriate copper cables that are designed for minimum operating temperatures of:
75°C for ambient up to 55°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.

Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

9/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

13. FRONT SIDE AND USER ELEMENTS
Fig. 13-1 Front sideA

Input Terminals (screw terminals)
N, LLine input
PE (Protective Earth) input

B

Output Terminals (screw terminals, two pins per pole)+
Positive output–
Negative (return) output

C

Output voltage potentiometer
Guaranteed adjustment range: 24-28V
Factory set: 24.1V

D DC-OK LED (green)
On, when the output voltage is >18V
E

DC-OK Relay Contact (push-in terminals)
Description see chapter 8.

Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

10/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

14. EMCThe power supply is suitable for applications in industrial environment.
A detailed EMC report is available on request.
EMC Immunity
Electrostatic discharge
Electromagnetic RF field
Fast transients (Burst)

Surge voltage on input
Surge voltage on output
Surge voltage on DC-OK
Conducted disturbance
Mains voltage dips

Voltage interruptions
Voltage sags

Powerful transients

According generic standards: EN 61000-6-1 and EN 61000-6-2
contact discharge
8kV
Criterion A
EN 61000-4-2
air discharge
8kV
Criterion A
EN 61000-4-3
80MHz-2.7GHz
10V/m
Criterion A
input lines
4kV
Criterion A
EN 61000-4-4
output lines
2kV
Criterion A
DC-OK signal (coupling clamp)
2kV
Criterion A
LN
2kV
Criterion A
EN 61000-4-5
L  PE, N  PE
4kV
Criterion A+500V
Criterion A
EN 61000-4-5+ / -  PE
1kV
Criterion A
EN 61000-4-5
DC-OK signal  PE
1kV
Criterion A
EN 61000-4-6
0.15-80MHz
10V
Criterion A
0% of 200Vac
0Vac, 20ms
Criterion A
EN 61000-4-11
40% of 200Vac
80Vac, 200ms
Criterion C
70% of 200Vac
140Vac, 500ms
Criterion C
EN 61000-4-11
0% of 200Vac (=0V)
5000msCriterion C
SEMI F47 0706
dips on the input voltage according to SEMI F47 standard
80% of 200Vac (160Vac)
1000msCriterion A
70% of 200Vac (140Vac)
500ms
Criterion C
50% of 200Vac (100Vac)
200ms
Criterion C
VDE 0160
over entire load range
750V, 0.3ms
Criterion A

Criterions:
A: Power supply shows normal operation behavior within the defined limits.
B: Temporary voltage dips possible. No change in operation mode.
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
Conducted emission
input lines
Conducted emission
output lines**)Radiated emission
Harmonic input current

According generic standards: EN 61000-6-3, EN 61000-6-4
EN 55011, EN 55032, FCC Part 15,
Class B fulfilled
CISPR 11, CISPR 32
limits for DC power port according EN
IEC/CISPR 16-1-2, IEC/CISPR 16-2-1
61000-6-3 not fulfilled
EN 55011, EN 55032
Class B fulfilled
Class A fulfilled between 0A and 20A load
EN 61000-3-2Class C fulfilled between 7A and 20A load
EN 61000-3-3
fulfilled*)

Voltage fluctuations,
flickerThis device complies with FCC Part 15 rules.
Operation is subjected to following two conditions: (1) this device may not cause harmful interference, and (2) thisdevice must accept any interference received, including interference that may cause undesired operation.
*) tested with constant current loads, non pulsing**) for information only, not mandatory for EN 61000-6-3

Switching Frequencies
Switching frequency 1
Switching frequency 2

The power supply has two converters with two different switching frequencies included.
40-120kHzPFC converter, input voltage and output power dependent
80-140kHz
Main converter, output voltage and output power dependentMar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

11/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

15. ENVIRONMENT
Operational temperature*)
Storage temperature
Output de-rating
Humidity**)Vibration sinusoidal
Shock
Altitude-25°C to +70°C (-13°F to 158°F)-40°C to +85°C (-40°F to 185°F)
8W/°C
5 to 95% r.h.
2-17.8Hz: ±1.6mm; 17.8-500Hz: 2g***)2 hours / axis***)30g 6ms, 20g 11ms***)3 bumps / direction, 18 bumps in total
0 to 2000m (0 to 6 560ft)
2000 to 6000m (6 560 to 20 000ft)

reduce output power according Fig. 15-1
for storage and transportation
55°C to 70°C (131°F to 158°F)
IEC 60068-2-30
IEC 60068-2-6
IEC 60068-2-27

without any restrictions
reduce output power or ambient temperature,
see Fig. 15-2
IEC 62103, EN 50178, overvoltage category II
30W/1000m or 5°C/1000m> 2000m (6500ft), see Fig. 15-2
III
IEC 62477-1, altitudes up to 2000m
II
altitudes from 2000m to 6000m
2
IEC 62477-1, not conductive
The unit does not release any silicone or other LABS-critical substances and is suitable foruse in paint shops.

Altitude de-rating
Over-voltage category
Degree of pollution
LABS compatibility*)

Operational temperature is the same as the ambient or surrounding temperature and is defined as the air temperature 2cm below theunit.
**) Do not energize while condensation is present***) Tested on a DIN-Rail with a thickness of 1.3mm.
Fig. 15-1 Output current vs. ambient temp.

Fig. 15-2 Output current vs. altitude
Allowed Output
Current at 24V

Allowable Output Current at 24V
20A

24A
20A

15A

C
B
A

16A
10A

12A
8A

5A
Ambient Temperature

0
-25

-10

0

+20

+40

+55 +70°C

A... Tamb < 55°C
B... Tamb < 45°C
C... Tamb < 35°C

4A

Altitude

0
0

2000

4000

6000m

Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

12/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

16. SAFETY AND PROTECTION FEATURES
Isolation resistance

Output over-voltage protection

500MOhm

Min.

500MOhm

Min.

500MOhm

Min.

500MOhm

Typ.
Max.

30.5Vdc
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.
I
According to IEC 61140
A PE (Protective Earth) connection is required
IP 20
According to EN/IEC 60529
Output shut-down with automatic restart.
Included
Temperature sensors are installed on criticalcomponents inside the unit and turn the unit off insafety critical situations, which can happen e.g. when
ambient temperature is too high, ventilation is
obstructed or the de-rating requirements are notfollowed. There is no correlation between theoperating temperature and turn-off temperaturesince this is dependent on input voltage, load andinstallation methods.
MOV (Metal Oxide
For protection values see chapter Fehler!
Varistor)
Verweisquelle konnte nicht gefunden werden.
(EMC).
Not user replaceable slow-blow high-braking
Includedcapacity fuse
0.33mA / 0.69mA
At 230Vac, 50Hz, TN-,TT-mains / IT-mains
0.43mA / 0.89mA
At 264Vac, 50Hz, TN-,TT-mains / IT-mains

Class of protection
Ingress protection
Over-temperature protection

Input transient protection

Internal input fuse
Touch current (leakage current)

At delivered condition between input and output,
measured with 500Vdc
At delivered condition between input and PE,
measured with 500Vdc
At delivered condition between output and PE,
measured with 500Vdc
At delivered condition between output and DC-OK
contacts, measured with 500Vdc

Min.

Typ.
Max.

Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

13/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

17. DIELECTRIC STRENGTH
The output voltage is floating and has no ohmic connection to the ground. Type and factory tests are conducted by
the manufacturer. Field tests may be conducted in the field using the appropriate test equipment, which applies thevoltage 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.
Type test

60s

A
2500Vac

B
3000Vac

C
500VacD
500VacFactory test

5s

2500Vac

2500Vac

500Vac

500VacField test

5s

2000Vac

2000Vac

500Vac

500Vac

10mA

10mA

10mA

1mA

Fig. 17-1 Dielectric strength

Input

DC-ok
B *)

L
N

Cut-off current setting
B

A

D
OutputEarth, PEC+-

To fulfil the PELV requirements according to EN60204-1 § 6.4.1, werecommend that either the + pole, the – pole or any other part ofthe output circuit shall be connected to the protective earthsystem. 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.

Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

14/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

18. APPROVALS AND FULFILLED STANDARDSUL 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
CB Scheme Certificate
IEC 61010-2-201 Electrical Equipment for Measurement, Control
and Laboratory Use - Particular requirements for control
equipment
CB Scheme Certificate
IEC 62368-1 Audio/video, information and communication
technology equipment - Safety requirements
Output safety level: ES1

UL 61010

IEC 61010

IEC 62368

ISA-71.04-1985

Manufacturer's Declaration (Online Document)
Airborne Contaminants Corrosion Test
Severity Level: G3 Harsh
H2S: 100ppb
NOx: 1250ppb
Cl2: 20ppb
SO2: 300ppb
Test Duration: 3 weeks, which simulates a service life of at least 10
years
Paint Wetting Impairment Substances Test (or LABS-Test)
Tested for Zone 2 and test class C1 according to VDMA 24364-C1-L/W
for solvents and water-based paints

VDMA 24364

19. REGULATORY COMPLIANCE
EU Declaration ofConformity

REACH Directive

WEEE Directive

RoHS (China RoHS 2)

EAC TR Registration

The CE mark indicates conformance with the- EMC directive- Low-voltage directive- RoHS directive
Manufacturer's Statement
EU-Directive regarding the Registration, Evaluation,
Authorization and Restriction of Chemicals
Manufacturer's Statement
EU-Regulation on Waste Electrical and Electronic Equipment
Registered in Germany as business to business (B2B) products.
Manufacturer's Statement
Administrative Measures for the Restriction of the Use ofHazardous Substances in Electrical and Electronic Products
25 years
EAC Certificate
EAC EurAsian Conformity - Registration Russia, Kazakhstan
and Belarus
8504408200, 8504409000

Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

15/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

20. PHYSICAL DIMENSIONS AND WEIGHT
Width
HeightDepth

WeightDIN-Rail
Plastic Material of Housing
Installation Clearances

49mm
1.93’’
124mm 4.88’’
124mm 4.88’’
The DIN-rail height must be added to the unit depth to calculate the total required
installation depth.
620g / 1.37lb
Use 35mm DIN-rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm.
Flame retardant Polycarbonate (PC) - UL94-V0
Vicat softening temperature specified with 149°C according to ASTM D1525
See chapter 2

Fig. 20-1 Front viewFig. 20-2 Side view

Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

16/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

21. ACCESSORY
21.1. YR40.242 REDUNDANCY MODULEThe YR40.242 is the preferred redundancy module for PIC480.241C power supplies. It is equipped with two input
channels (20A each), which are individually decoupled by utilizing MOSFET technology.
The output current can go as high as 40A.
Using MOSFETs instead of diodes reduces
the heat generation and the voltage drop
between input and output.

FailureMonitor+ + -+ - + --The YR40.242 does not require an
additional auxiliary voltage.

Output+

L N PESee chapter 22.5 for instructions how tobuild a redundant system.

DCOK

Redundancy
Module

PIC480.241C
Power Supply

I

-

-

24-28V
DC-OK

YR40.242

DCOK

Due to the low power losses, the unit is very
slender and only requires 36mm width on
the DIN-rail.

+ + -Input Input2
1

24-28VDC-OK

PIC480.241C
Power Supply
L N PEI

24V,20A
Load

L
N
PE

21.2. PIRD20.241 REDUNDANCY MODULE
The PIRD20.241 is a very cost effective diode redundancy module, which can be used to build 1+1 and N+1 redundant
systems. It is equipped with two input channels, which can be connected to power supplies with up to 10A output
current and one output, which can carry nominal currents up to 20A.
If 20A power supplies are utilized, it is recommended to connect the power supply output to both inputs of theredundancy module. Therefore, two redundancy
modules are required to build a 20A redundant power
Failuresystem.
Monitor+ + --24-28V
DC-OK

+ + -

-

- - + +

PIC480.241C
Power Supply

PIRD20.241- - + +

IN IN
1 2

24-28VDC-OK

DCOK
PIC480.241C
Power Supply
L N PESee chapter 22.5 for instructions
how to build a redundant system.

DCOK
PIRD20.241
Redundancy
ModuleOUT+ - -The PIRD20.241 does not require an
additional auxiliary voltage and isself- powered even in case of ashort circuit across the output.

IN IN
1 2

I

L N PE

Redundancy
ModuleOUT+ - -The PIRD20.241 is the perfect solution to use in a
redundant system, if the power
supply itself is equipped with a DCOK signal.

I

24V, 20A
Load

L
N
PE

Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

17/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

22. APPLICATION NOTES
22.1. BACK-FEEDING LOADS
Loads such as decelerating motors and inductors can feed voltage back to the power supply. This feature is also called
return voltage immunity or resistance against Back- E.M.F. (Electro Magnetic Force).
This power supply 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 maximum allowed feed-back-voltage is 35Vdc. The absorbing energy can be calculated according to the built-in
large sized output capacitor which is specified in chapter 6.

22.2. EXTERNAL INPUT PROTECTION
The unit is tested and approved for branch circuits up to 30A (UL) and 32A (IEC). An external protection is only
required if the supplying branch has an ampacity greater than this. Check also local codes and local requirements. In
some countries local regulations might apply.
If an external fuse is necessary or utilized, minimum requirements need to be considered to avoid nuisance tripping of
the circuit breaker. A minimum value of 10A B- or 6A C-Characteristic breaker should be used.

22.3. PARALLEL USE TO INCREASE OUTPUT POWER
Do not use the power supply in parallel to increase the output power.

22.4. PARALLEL USE FOR 1+1 REDUNDANCYPower supplies can be paralleled for redundancy to gain higher system availability. Redundant systems require acertain amount of extra power to support the load in case one power supply unit fails. The simplest way is to put two
power supplies in parallel. This is called a 1+1 redundancy. In case one power supply unit fails, the other one is
automatically able to support the load current without any
interruption.
FailureMonitorPlease note: This simple way to build a redundant system does notcover failures such as an internal short circuit in the secondary side of
the power supply. In such a case, the defect unit becomes a load forthe other power supplies and the output voltage can not be
maintained any more. This can only be avoided by utilizing
decoupling diodes which are included in the redundancy module
YR40.241.

+ + -

-

24-28VDC-OK
DCOK

PIC480.241C
Power Supply
L N PE

Recommendations for building redundant power systems:+ - + -

+ + -Input Input
2
1

YR40.242

DCOK

Redundancy
ModuleOutput+--24-28VDC-OK

PIC480.241C
Power Supply
L N PEa)

Monitor the individual power supply units. Therefore, use the
DC-OK relay contact of the PIC480.241C power supply.

b)

Use separate input fuses for each power supply.

c)

Use separate mains systems for each power supply whenever it ispossible.

d)

It is desirable to set the output voltages of all units to the same value (± 100mV) or leave it at the factory setting.

I

I

24V,20A
Load

L
N
PE

Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

18/19

PIC480.241C, PIC480.241C-C1
24V, 20A, 480W, SINGLE PHASE INPUTPIANO-Series

22.5. SERIES OPERATION

Unit A

Power supplies 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 are not SELV any more and can be dangerous.
Such voltages must be installed with a protection against touching.

AC

Earthing of the output is required when the sum of the output voltage isabove 60Vdc.

AC

DC

+
+

Unit B

Avoid return voltage (e.g. from a decelerating motor or battery) which isapplied to the output terminals.

Load

DC

-

+
-

Earth
(see notes)

Keep an installation clearance of 15mm (left / right) between two power supplies and avoid installing the power
supplies on top of each other.
Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple power supplies.

22.6. INDUCTIVE AND CAPACITIVE LOADSThe unit 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 larger than 1.5F are connected to the
output, the unit might charge the capacitor in the HiccupPLUS mode (see chapter 6).

22.7. CHARGING OF BATTERIES
Do not use the power supply to charge batteries.

22.8. OPERATION ON TWO PHASES

240V +10% max.

The power supply can also be used on two-phases of a three-phasesystem. Such a phase-to-phase connection is allowed as long as the
supplying voltage is below 240V+10%.

Power Supply

L1

L3

AC
L
Fuse

internal
fuse

N
PE

L2

DC

22.9. 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.
Enclosure:
Input:

Rittal Type IP66 Box PK 9519 100, plastic, 180x180x165mm
230VacLoad:Temperature inside the box:
Temperature outside the box:
Temperature rise:

24V, 16A; (=80%) load is placed outside the box
51.5°C (in the middle of the right side of the power supply with a distance of 1cm)
25.5°C
26.0K

Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

19/19