Puls PIANO, PIM90.241 Series Manual

P R E L I M I N A R Y

PIM90.241

PIANO-Series

PRODUCT DESCRIPTION

The PIANO series units are extraordinarily compact
industrial grade DIN-rail 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 mechanically robust housing is made of a high­grade, reinforced molded material, which permits the
units to be used in surrounding temperatures up to
+70°C.

The PIM90.241 is equipped with push-in terminals,
which are optimized for automated wiring.

The unit is designed as “Class of Protection” II unit and
fulfills the safety and EMC requirements without an
input PE connection. This saves wiring costs.

ORDER NUMBERS

Power Supply PIM90.241

24V, 3.8A, 90W, SINGLE PHASE INPUT

OWER SUPPLY

P

 100-240V Wide Range Input
 Cost Optimized without Compromising Quality or

Reliability

 No PE connection required
 Width only 36mm
 Efficiency up to 93.8%
 Low No-load Power Losses
 Full Power Between -10°C and +60°C
 Push-In Terminals
 3 Year Warranty

SHORT-FORM DATA

Output voltage DC 24V Nominal
Adjustment range 24 – 28V Factory setting 24.1V
Output current 3.8 – 3.2A Below +60°C ambient

2.8 – 2.4A At +70°C ambient
Derate linearly between +60°C and +70°C

Input voltage AC AC 100-240V ±10%
Mains frequency 50-60Hz ±6%
Input current AC 1.45 / 0.95A At 120 / 230Vac
Power factor 0.58 / 0.45 At 120 / 230Vac
Input inrush current 18 / 40A peak At 40°C 120 / 230Vac
Efficiency 92.1 / 93.8% At 120 / 230Vac
Losses 7.9 / 6.0W At 120 / 230Vac
Hold-up time 25 / 119ms At 120 / 230Vac
Temperature range -10°C to +70°C
Size (W x H x D) 36x90x91mm Without DIN-Rail
Weight 270g / 0.6lb

MAIN APPROVALS

For details and a complete approval list see chapter 18.

Ind. Cont. Eq.

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

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P R E L I M I N A R Y

PIM90.241

PIANO-Series

24V, 3.8A, 90W, SINGLE PHASE INPUT

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.......................................................8

8. Efficiency and Power Losses................................9

9. Functional Diagram...........................................10

10. Front Side and User Elements...........................10

11. Connection Terminals .......................................11

12. Lifetime Expectancy ..........................................11

13. MTBF ..................................................................11

14. EMC....................................................................12

15. Environment......................................................13

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.

16. Safety and Protection Features........................ 14

17. Dielectric Strength............................................ 15

18. Approvals.......................................................... 15

19. Other Fulfilled Standards................................. 15

20. Physical Dimensions and Weight..................... 16

21. Application Notes............................................. 17

21.1. Peak Current Capability ...........................17

21.2. Charging of Batteries ...............................18

21.3. Series Operation .......................................18

21.4. Parallel Use to Increase Output Power....18

21.5. Parallel Use for 1+1 Redundancy ............. 18

21.6. Operation on Two Phases ........................19

21.7. Use in a Tightly Sealed Enclosure ............19

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 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.

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

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2/19

P R E L I M I N A R Y

PIM90.241

PIANO-Series

24V, 3.8A, 90W, SINGLE PHASE INPUT

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 power supply in equipment, where malfunction may cause severe personal injury or threaten human
life.

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

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P R E L I M I N A R Y

PIM90.241

PIANO-Series

24V, 3.8A, 90W, SINGLE PHASE INPUT

2. INSTALLATION INSTRUCTIONS

WARNING

- Turn power off before working on the device. Protect against inadvertent re-powering.

- Make sure that the wiring is correct by following all local and national codes.

- Do not modify or repair the unit.

- Do not open the unit as high voltages 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.
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.

The device is designed for pollution degree 2 areas in controlled environments. No condensation or frost allowed.
The enclosure of the device provides a degree of protection of IP20.
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” II equipment according to IEC 61140.
The device is suitable to be supplied from TN-, TT- and IT mains networks. The voltage between the L or N terminal

and the PE terminal must not exceed 300Vac continuously.
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). See additional requirements in this document for use above

2000m (6560ft).
Keep the following minimum installation clearances: 40mm on top, 20mm on the bottom, 0mm left and right side.

Increase the 0mm to 15mm in case the adjacent device is a heat source.
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 6A B- or 4A 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.

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

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

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P R E L I M I N A R Y

PIM90.241

PIANO-Series

24V, 3.8A, 90W, SINGLE PHASE INPUT

3. AC-INPUT

The device is suitable to be supplied from TN-, TT- and IT mains networks with AC voltage. For suitable DC supply
voltages see chapter 4.

AC input Nom. AC 100-240V
AC input range Min. 90-264Vac Continuous operation
Min. 264-300Vac For maximum 500ms
Allowed voltage L or N to earth Max. 300Vac Continuous according to IEC 62477-1
Input frequency Nom. 50–60Hz ±6%
Turn-on voltage Typ. 55Vac Steady-state value, see Fig. 3-1
Shut-down voltage Typ. 47Vac Steady-state value, see Fig. 3-1
External input protection See recommendations in chapter 2.

AC 100V AC 120V AC 230V
Input current Typ. 1.69A 1.45A 0.95A At 24V, 3.8A, see Fig. 3-3
Power factor Typ. 0.6 0.58 0.45 At 24V, 3.8A, see Fig. 3-4
Start-up delay Typ. 50ms 50ms 50ms See Fig. 3-2
Rise time Typ. 21ms 21ms 20ms At 24V, 3.8A constant current load,

Typ. 42ms 42ms 40ms At 24V, 3.8A constant current load,

Turn-on overshoot Max. 100mV 100mV 100mV See Fig. 3-2

Fig. 3-1 Input voltage range Fig. 3-2 Turn-on behavior, definitions

P

OUT

Rated

input range

max.

500ms

Input
Voltage

0mF load capacitance, see Fig. 3-2

2mF load capacitance,, see Fig. 3-2

Turn-on

Shut-down

90V

V

IN

300Vac264V

Output
Voltage

- 5%

Start-up

delay

Rise

Time

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

Input Current, typ.

1.8A

1.5

1.2

0.9

0.6

0.3

0

012

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

output voltage

a: 100Vac
b: 120Vac
c: 230Vac

a

b

c

Output Current

3

www.pulspower.com Phone [phone] Germany

4A

Fig. 3-4 Power factor vs. output load at 24V

Power Factor, typ.

0.6

0.5

0.4

0.3

0.2

0.1

0.4 1.0 2.0 3.0

output voltage

a) 100Vac, 50Hz
b) 120Vac, 60Hz
c) 230Vac, 50Hz

Output Current

Overshoot

a
b

c

4.0A

5/19

P R E L I M I N A R Y

PIM90.241

PIANO-Series

24V, 3.8A, 90W, SINGLE PHASE INPUT

4. DC-INPUT

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

5. INPUT INRUSH CURRENT

A NTC limits the input inrush current after turn-on of the input voltage. The inrush current is input voltage and
ambient temperature dependent. The output load has no impact on the inrush current value.

The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on.

Inrush current Max. 17A
Typ. 14A
Max. 15A
Typ. 12A
Inrush energy Max. 0.3A

AC 100V AC 120V AC 230V

22A

peak

18A

peak

20A

peak

16A

peak

2

s 0.4A2s 1.7A2s At 40°C ambient, cold start

peak

peak

peak

peak

Fig. 5-1 Typical turn-on behavior at 230Vac

and 25°C ambient

48A
40A
43A
35A

Fig. 5-2 Zoom into the first inrush peak

peak

peak

peak

peak

At 40°C ambient, cold start
At 40°C ambient, cold start
At 25°C ambient, cold start
At 25°C ambient, cold start

Input current 20A/DIV

Input voltage 1000V/DIV

20ms/DIV

Fig. 5-3 Typical turn-on behavior at 120Vac

and 25°C ambient

Input current 10A/DIV

Input voltage 500V/DIV

20ms/DIV

Output voltage

Output voltage

Ipk = 35A

Input current
5A/DIV

Fig. 5-4 Zoom into the first inrush peak

Ipk = 16A

1ms/DIV

Input current
5A/DIV

1ms/DIV

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

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A

P R E L I M I N A R Y

PIM90.241

PIANO-Series

24V, 3.8A, 90W, SINGLE PHASE INPUT

6. OUTPUT

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 unlimited inductive loads. Capacitive loads should not be

larger than 5500μF with 3.8A or 7000μF with 1.9A additional current load.

Output voltage Nom. DC 24V
Adjustment range Min. 24-28V Guaranteed value
Max. 29.0V 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 85 and 300Vac
Load regulation Max. 100mV Between 0 and 3.8A, static value, see Fig. 6-1
Ripple and noise voltage Max. 100mVpp Bandwidth 20Hz to 20MHz, 50Ohm
Output current Nom. 3.8A At 24V and an ambient temperature below 60°C
Nom. 3.2A At 24V and 70°C ambient temperature
Nom. 2.8A At 28V and an ambient temperature below 60°C
Nom. 2.4A At 28V and 70°C ambient temperature
Overload protection Included Electronically protected against no-load, overload

and short circuit. In case of a protection event,

audible noise may occur.
Overload behaviour Continuous current Output voltage >14Vdc, see Fig. 6-1.
Intermittent current1) Output voltage <14Vdc, see Fig. 6-1.
Overload/ short-circuit current Max. 6.7A Continuous current, see Fig. 6-1.
Typ. 8.6A Intermitted current peak value for typ. 20ms

Load impedance 150mOhm, see Fig. 6-2.

Discharge current of output capacitors is not included.
Max. 3.2A Intermitted current average value (R.M.S.)

Load impedance 150mOhm, see Fig. 6-2.
Output capacitance Typ. 1 600μF 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 14V), the power supply delivers continuous output current for 20ms. After this, the output is

switched off for approx. 160ms before a new start attempt is automatically performed. This cycle is repeated as long as the overload exists. If the
overload has been cleared, the device will operate normally. See Fig. 6-2.

Fig. 6-1 Output voltage vs. output current, typ. Fig. 6-2 Intermittent , typ.

Output Voltage

28V

24

20

16

12

A: continuous current

8

B: intermitted current

4
0

012

Adjustment range

A

Output Current

43 5 6 7 89

Output
Current

8.6A

Normal

operation

Short -circuit

Normal

operation

B

10

0

20
ms

160ms

20
ms

160ms

20
ms

160ms

t

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

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P R E L I M I N A R Y

PIM90.241

PIANO-Series

24V, 3.8A, 90W, SINGLE PHASE INPUT

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. 40ms 60ms 242ms At 24V, 1.9A, see Fig. 7-1
Min. 32ms 48ms 194ms At 24V, 1.9A, see Fig. 7-1
Typ. 14ms 25ms 119ms At 24V, 3.8A, see Fig. 7-1
Min. 11.5ms 20ms 95ms At 24V, 3.8A, see Fig. 7-1

Fig. 7-1 Hold-up time vs. input voltage Fig. 7-2 Shut-down behavior, definitions

120ms

Hold-up Time

100

80

60

40

20

0

90

a b

155 190 230Vac

120

a) 24V 1.9A typ.
b) 24V 1.9Amin.
c) 24V 3.8A typ.
d) 24V 3.8A min.

Input Voltage

c

d

Input
Voltage

Output
Voltage

Hold-up Time

Zero Transition

- 5%

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

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P R E L I M I N A R Y

PIM90.241

PIANO-Series

24V, 3.8A, 90W, SINGLE PHASE INPUT

8. EFFICIENCY AND POWER LOSSES

AC 100V AC 120V AC 230V
Efficiency typ. 90.6% 92.1% 93.8% At 24V, 3.8A (full load)
Average efficiency1) typ. 90.5% 91.6% 92.0% 25% at 0.95A, 25% at 1.9A,

Power losses typ. 0.3W 0.3W 0.4W At no load
typ. 5.0W 4.3W 3.8W At 24V, 1.9A (half load)
typ. 9.5W 7.9W 6.0W At 24V, 3.8A (full load)

1) 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. 8-1 Efficiency vs. output current at 24V,

Efficiency

94%

93
92
91
90
89
88
87
86

0.2

typ.

0.8 2.6

a) 230Vac
b) 120Vac
c) 100Vac

Output Current

a

b

c

3.8A1.4 2.0 3.2

Fig. 8-2 Losses vs. output current at 24V,

Power Losses

10W

typ.

9
8
7
6
5
4
3
2
1
0

a) 100Vac
b) 120Vac
c) 230Vac

0 0.5 4.0A

1.0 1.5 2.0

Fig. 8-3 Efficiency vs. input voltage at 24V,

3.8A, typ.

Fig. 8-4 Losses vs. input voltage at 24V, 3.8A,

typ.

25% at 2.85A. 25% at 3.8A

a

b

c

2.5 3.0

3.5

Output Current

Power Losses

10W

8

6

4

2

85

120 155 190 225 260Vac

Input Voltage

Efficiency

94%

93

92

91

90

89

88

85 120

190 225 260Vac

155

Input Voltage

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

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P R E L I M I N A R Y

PIM90.241

PIANO-Series

9. FUNCTIONAL DIAGRAM

Input

N

L

Fuse
&
Input
Filter

Fig. 9-1 Functional diagram

Input
Rectifier
&
Inrush
Limiter

10. FRONT SIDE AND USER ELEMENTS

Fig. 10-1 Front side

A Output terminals (Push-in terminals)

Dual terminals for the negative and positive pole. Both poles are internally
connected
+ Positive output

- Negative (return) output

Input terminals (push-in terminals)

B

L Phase (Line) input
N Neutral conductor input

DC-ok LED (green)

C

The LED is on, when the output voltage is >18V.

Output voltage potentiometer

D

Power

Converter

Output Over-

Voltage

Protection

24V, 3.8A, 90W, SINGLE PHASE INPUT

V

+
+

-

-

OUT

DC-ok
LED

Output

Voltage

Regulator

Output

Filter

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

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P R E L I M I N A R Y

PIM90.241

PIANO-Series

24V, 3.8A, 90W, SINGLE PHASE INPUT

11. CONNECTION TERMINALS

The terminals are IP20 Finger safe constructed and suitable for field- and factory wiring. Ensure that all strands of a
stranded wire enter the terminal connection! The use of ferrules is recommended.

Type Push-in termination
Solid wire Max. 2.5mm2
Stranded wire Max. 2.5mm2
Stranded wire with ferrules Max. 1.5mm
American Wire Gauge AWG 24-12
Max. wire diameter (including ferrules) 2.3mm
Wire stripping length 10mm / 0.4inch
Screwdriver 3mm slotted to open the spring

2

12. 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 260 000h 292 000h 309 000h At 24V, 1.9A and 40°C
640 000h 720 000h 815 000h At 24V, 1.9A and 25°C
39 000h 64 000h 102 000h At 24V, 3.8A and 40°C
91 000h 147 000h 287 000h At 24V, 3.8A and 25°C

13. 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 T.B.D. T.B.D. T.B.D. At 24V, 3.8A and 40°C
T.B.D. T.B.D. T.B.D. At 24V, 3.8A and 25°C
MTBF MIL HDBK 217F T.B.D. T.B.D. T.B.D. At 24V, 3.8A , 40°C; Ground Benign GB40
T.B.D. T.B.D. T.B.D. At 24V, 3.8A , 25°C; Ground Benign GB25
T.B.D. T.B.D. T.B.D. At 24V, 3.8A , 40°C; Ground Fixed GF40
T.B.D. T.B.D. T.B.D. At 24V, 3.8A , 25°C; Ground Fixed GF25

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

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11/19

P R E L I M I N A R Y

PIM90.241

PIANO-Series

24V, 3.8A, 90W, SINGLE PHASE INPUT

14. 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 is investigated according to EN 61000-6-1, EN 61000-6-2, EN 61000-6-3 and EN 61000-6-4.

EMC Immunity

Electrostatic discharge EN 61000-4-2 Contact discharge

Electromagnetic RF field EN 61000-4-3 80MHz-2.7GHz 10V/m Criterion A
Fast transients (Burst) EN 61000-4-4 Input lines

Surge voltage on input EN 61000-4-5 L Æ N

Surge voltage on output EN 61000-4-5 + Æ -

Conducted disturbance EN 61000-4-6 0.15-80MHz 10V Criterion A
Mains voltage dips EN 61000-4-11 0% of 100Vac

Voltage interruptions EN 61000-4-11 0Vac, 5000ms Criterion C
Powerful transients VDE 0160 Over entire load range 750V, 1.3ms Criterion A

Criterions:
A: The device shows normal operation behavior within the defined limits.

B: The device operates continuously during and after the test. During the test minor temporary impairments may occur, which will be

corrected by the device itself.

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

Conducted emission
output lines

Radiated emission EN 55011, EN 55022, CISPR 11, CISPR 22 Class B
Harmonic input current EN 61000-3-2 Fulfilled (Class A)
Voltage fluctuations, flicker EN 61000-3-3 Fulfilled, tested with 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

Main converter 40kHz to 140kHz Input voltage and output load dependent

8kV

Air discharge

Output lines
DC-OK Signal (coupling clamp)

N / L Æ Earthed output

+ Æ (-) Earthed

- Æ (+) Earthed

40% of 100Vac
70% of 100Vac
0% of 120Vac
40% of 120Vac
70% of 120Vac
0% of 200Vac
40% of 200Vac
70% of 200Vac

EN 55011, EN 55022, FCC Part 15,
CISPR 11, CISPR 22

IEC/CISPR 16-1-2, IEC/CISPR 16-2-1 Limits for local DC power

8kV

4kV
2kV
2kV

2kV
4kV

1kV
1kV
1kV

0Vac, 20ms
40Vac, 200ms
70Vac, 500ms
0Vac, 20ms
48Vac, 200ms
84Vac, 500ms
0Vac, 20ms
80Vac, 200ms
140Vac, 500ms

Class B

networks fulfilled.

constant current loads.

Criterion A
Criterion A

Criterion A
Criterion A
Criterion A

Criterion A
Criterion A

Criterion A
Criterion A
Criterion A

Criterion B
Criterion C
Criterion A
Criterion A
Criterion C
Criterion A
Criterion A
Criterion A
Criterion A

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

www.pulspower.com Phone [phone] Germany

12/19

P R E L I M I N A R Y

PIM90.241

PIANO-Series

24V, 3.8A, 90W, SINGLE PHASE INPUT

15. ENVIRONMENT

Operational temperature -10°C to +70°C (14°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 0.1A/°C

0.25A/1000m or 5°C/1000m

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 10 to 90% r.H. According to IEC 60068-2-30

Atmospheric pressure 110-47kPa See Fig. 15-2 for details
Altitude Up to 6000m (20 000ft) See Fig. 15-2 for details
Over-voltage category III For altitudes up to 2000m according to IEC

II For altitudes above 2000m according to IEC

Degree of pollution 2 According to IEC 62477-1, non conductive
Vibration sinusoidal 2-17.8Hz: ±1.6mm; 17.8-500Hz: 2g

2 hours / axis

Shock T.B.D.

3 bumps / direction, 18 bumps in total

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 mounting 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 Compliant to ISA-71.04-1985, Severity Level G3 and IEC 60068-2-60 Test Ke Method 4 for

a service life of minimum 10 years in these environments.

Audible noise Some audible noise may be emitted from the power supply during no load, overload or

short circuit.

Fig. 15-1 Output power vs. ambient temp. Fig. 15-2 Output power vs. altitude

Allowed Output Current at 24V

3.8A

2.8A

B

A

Between +60°C and +70°C (140°F to 158°F)

For altitudes >2000m (6560ft), see Fig. 15-2

No condensation allowed.

60664-1

60664-1

According to IEC 60068-2-6

According to IEC 60068-2-27

Allowed Output Current at 24V

3.8A

3.55A

2.8A

C
B

A

A...continuous
B... short term (max. 300s)

0

-10 0

Ambient Temperature

+60

+70°C

Altitude

*)

AP

*) Atmospheric pressure

A... Tamb < 60°C
B... Tamb < 50°C
C... Tamb < 45°C

0

110

2000

80

4000

62

5000m

54kPa

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

www.pulspower.com Phone [phone] Germany

13/19

P R E L I M I N A R Y

PIM90.241

PIANO-Series

24V, 3.8A, 90W, SINGLE PHASE INPUT

16. SAFETY AND PROTECTION FEATURES

Isolation resistance Min. 500MOhm At delivered condition between input and

output, measured with 500Vdc
Output over-voltage protection Typ. 30.5Vdc
Max. 32Vdc
In case of an internal power supply defect, a redundant circuit limits the

maximum output voltage. The output shuts down and automatically

attempts to restart.
Class of protection II According to IEC 61140
Degree of protection IP 20 According to EN/IEC 60529
Over-temperature protection Not included
Input transient protection MOV

(Metal Oxide Varistor)
Internal input fuse Included Not user replaceable slow-blow high-braking

Touch current (leakage current) Typ. 50μA / 120μA At 100Vac, 50Hz, TN-,TT-mains / IT-mains
Typ. 75μA / 170μA At 120Vac, 60Hz, TN-,TT-mains / IT-mains
Typ. 130μA / 270μA At 230Vac, 50Hz, TN-,TT-mains / IT-mains
Max. 80μA / 190μA At 110Vac, 50Hz, TN-,TT-mains / IT-mains
Max. 120μA / 270μA At 132Vac, 60Hz, TN-,TT-mains / IT-mains
Max. 210μA / 400μA At 264Vac, 50Hz, TN-,TT-mains / IT-mains

For protection values see chapter 14 (EMC).

capacity fuse

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

www.pulspower.com Phone [phone] Germany

14/19

P R E L I M I N A R Y

PIM90.241

PIANO-Series

24V, 3.8A, 90W, SINGLE PHASE INPUT

17. DIELECTRIC STRENGTH

The output voltage is floating and has no ohmic connection to the ground. It is recommended 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.

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 phase­terminals together as well as all output poles before conducting the test. When testing, set the cut-off current settings
to the value in the table below.

Fig. 17-1 Dielectric strength

Input Output

L

N

A

+

-

A

Type test 60s 3000Vac
Routine test
Field test 5s 2000Vac
Cut-off current setting for field test > 4mA

5s 2500Vac

18. APPROVALS

EC Declaration of Conformity
planned

IEC 60950-1

nd

Edition

2
planned

IEC 61010-2-201

nd

Edition

2
planned

ANSI/UL 61010-2-201
(former UL 508)
planned

EAC TR Registration
planned

Ind. Cont. Eq.

The CE mark indicates conformance with the

- EMC directive and the

- Low-voltage directive and the

- RoHS directive
CB Scheme for I.T.E.

Information Technology Equipment

CB Scheme for electrical equipment for measurement,
control, and laboratory use - Part 2-201: Particular
requirements for control equipment

Listed as Open Type Device for use in Control Equipment
UL Category NMTR, NMTR7

E-File: E198865

Registration for the Eurasian Customs Union market
(Russia, Kazakhstan, Belarus)

19. OTHER FULFILLED STANDARDS

REACH Directive

IEC/EN 61558-2-16
(Annex BB)

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

Safety Isolating

Transformer

www.pulspower.com Phone [phone] Germany

Directive 1907/2006/EU of the European Parliament and the
Council of June 1
Evaluation, Authorisation and Restriction of Chemicals

Safety Isolating Transformers corresponding to Part 2-6 of the
IEC/EN 61558

st

, 2007 regarding the Registration,

15/19

P R E L I M I N A R Y

PIM90.241

PIANO-Series

24V, 3.8A, 90W, SINGLE PHASE INPUT

20. PHYSICAL DIMENSIONS AND WEIGHT

Width 36mm 1.42’’
Height 90mm 3.54’’
Depth 91mm 3.58’’

The DIN-rail height must be added to the unit depth to calculate the total required

installation depth.
Weight 270g / 0.6lb
DIN-Rail Use 35mm DIN-rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm.
Housing material High-grade polycarbonate/ ABS blend material
Installation clearances See chapter 2
Penetration protection Small parts like screws, nuts, etc. with a diameter larger than 4.2mm.

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

All dimensions in mm

All dimensions in mm

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

www.pulspower.com Phone [phone] Germany

16/19

P R E L I M I N A R Y

PIM90.241

PIANO-Series

24V, 3.8A, 90W, SINGLE PHASE INPUT

21. APPLICATION NOTES

21.1. PEAK CURRENT CAPABILITY

The unit can deliver peak currents (up to several milliseconds) which are higher than the specified short term currents.
This helps to start current demanding loads. Solenoids, contactors and pneumatic modules often have a steady state

coil and a pick-up coil. The inrush current demand of the pick-up coil is several times higher than the steady-state
current and usually exceeds the nominal output current. The same situation applies when starting a capacitive load.

The peak current capability also ensures the safe operation of subsequent circuit breakers of load circuits. The load
branches are often individually protected with circuit breakers or fuses. In case of a short or an overload in one branch
circuit, the fuse or circuit breaker need a certain amount of over-current to open in a timely manner. This avoids
voltage loss in adjacent circuits.

The extra current (peak current) is supplied by the built-in large sized output capacitors of the power supply. The
capacitors get discharged during such an event, which causes a voltage dip on the output. The following two examples
show typical voltage dips for resistive loads:

Fig. 21-1 7.6A peak current for 50ms , typ.

(2x the nominal current)

Fig. 21-2 19A peak current for 5ms , typ.

(5x the nominal current)

24V

7.6A

0A

10ms/DIV

Peak current voltage dips Typically from 24V to 16.5V At 7.6A for 50ms and resistive load
Typically from 24V to 13.5V At 19A for 2ms and resistive load
Typically from 24V to 9.5V At 19A for 5ms and resistive load

Output
Voltage

16.5V

Output
Current

24V

19A

0A

1ms/DIV

9.5V

Output
Voltage

Output
Current

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

www.pulspower.com Phone [phone] Germany

17/19

P R E L I M I N A R Y

PIM90.241

PIANO-Series

24V, 3.8A, 90W, SINGLE PHASE INPUT

21.2. CHARGING OF BATTERIES

Do not use the power supply to charge batteries.

21.3. 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.

Unit A

Input

Output

Unit B

Input

Output

+

-

+

-

+

Load

-

21.4. PARALLEL USE TO INCREASE OUTPUT POWER

Do not use the power supply in parallel to increase the output power.

21.5. PARALLEL USE FOR 1+1 REDUNDANCY

Devices can be paralleled for 1+1 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.

This device does not incorporate means to report a defective or non functional power supply. Since this is essential for
redundant systems, chose a redundancy module which monitors and reports an insufficient input voltage or use a
power supply, which has a DC-OK signal included.

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

www.pulspower.com Phone [phone] Germany

18/19

P R E L I M I N A R Y

PIM90.241

PIANO-Series

21.6. 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

Ensure that the wire, which is connected to the N-terminal, is
appropriately fused.

+10%

.

24V, 3.8A, 90W, SINGLE PHASE INPUT

Power Supply

AC

L

N

DC

L3

L1

max.

+10%

240V

L2

21.7. USE IN A TIGHTLY SEALED ENCLOSURE

When the device 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 device.

In the following test setup, the device is placed in the middle of the box, no other heat producing items are inside the
box. The load is placed outside 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 110x180x165mm

Rittal Typ IP66 Box

PK 9516 100, plastic
Input voltage 230Vac 230Vac
Load
Temperature inside the box 34.2°C 35.9°C
Temperature outside the box 24.9°C 25.2°C
Temperature rise 9.3K 10.7K

24V, 3.04A (=80%) 24V, 3.8A; (=100%)

110x180x165mm
Rittal Typ IP66 Box
PK 9516 100, plastic

Nov. 2018 / Rev. 0.1 DS-PIM90.241-EN All figures are typical values at 230Vac 50Hz input voltage, 24V 3.8A output load,
25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

www.pulspower.com Phone [phone] Germany

19/19