Puls PIRD20.241 Data Sheet

PIRD20.241

PIANO-Series

GENERAL DESCRIPTION

The PIRD20.241 is a 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. The module is suitable for power supplies with constant current overload behavior as well as any kind of “hiccup” overload behavior.

The PIRD20.241 is the perfect solution to use in a redundant system, if the power supply itself is equipped with a DC-OK signal.

Another application for this redundancy module is to separate sensitive loads from non-sensitive loads. This avoids the distortion of the power quality for the sensitive loads which can cause controller failures.

ORDER NUMBER

Redundancy Module PIRD20.241

DC 12-28V, 20A, DUAL INPUT REDUNDANCY MODULE

REDUNDANCY MODULE

 Cost Effective Solution to Build Redundant Systems  Dual Input with Single Output  Two Diodes (Common Cathode)  DC 12-28V ±25% Wide-range Input  Full Power Between -40°C and +55°C  Width only 39mm  Large Screw Terminals  Easy Wiring:

Distribution Terminal for Negative Pole Included

 3 Year Warranty

SHORT-FORM DATA

Input voltage DC 12-28V ±25% Input voltage range Input current 2x 0-10A ambient < +55°C 2x 0-6.25A ambient < +70°C Output current 0-20A ambient < +55°C 0-12.5A ambient < +70°C

Input to output voltage drop

Power losses 0W at no load typ. 4.6W input: 2x5A typ. 11.2W input: 2x10A Temperature range -40°C to +70°C operational Derating 0.5A/°C +55 to +70°C Dimensions 39x124x124mm WxHxD Weight 280g / 0.62lb

9-35Vdc

26A at cont. overload/

typ. 0.46V typ. 0.56V

short circuit input: 2x5A

input: 2x10A

MARKINGS

IND. CONT. E

UL 508

Jan. 2017 / Rev. 2.0 DS-PIRD20.241 All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted

UL 60950-1

EMC

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PIRD20.241

PIANO-Series

DC 12-28V, 20A, DUAL INPUT REDUNDANCY MODULE

INDEX

Page Page

1. Intended Use .......................................................3

2. Installation Requirements...................................3

3. Input and Output Characteristics .......................4

4. Power Losses........................................................5

5. Lifetime Expectancy and MTBF...........................5

6. Terminals and Wiring..........................................6

7. Functional Diagram.............................................6

8. Front Side and User Elements.............................7

9. EMC......................................................................8

10. Environment ........................................................9

11. Protection Features ...........................................10

12. Safety Features ..................................................10

13. Dielectric Strength ............................................10

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.

14. Approvals.......................................................... 11

15. RoHS, REACH and Other Fulfilled Standards .. 11

16. Physical Dimensions and Weight ..................... 12

17. Application Notes............................................. 13

17.1. Using Only One Input Instead of Both

Channels...............................................................13

17.2. Recommendations for Redundancy.........13

17.3. Inductive and Capacitive Loads................14

17.4. Use in a Tightly Sealed Enclosure ............14

17.5. Example: Redundancy for Controls .........14

17.6. Example: 1+1 Redundancy up to 10A......15

17.7. Example: 1+1 Redundancy up to 20A......15

TERMINOLOGY AND ABREVIATIONS

DC 24V 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)

24Vdc A figure with the unit (Vdc) at the end is a momentary figure without any additional

tolerances included.

may A key word indicating flexibility of choice with no implied preference

shall A key word indicating a mandatory requirement

should A key word indicating flexibility of choice with a strongly preferred implementation

1+1 Redundancy Use of two identical power supplies in parallel to provide continued operation following most

failures in a single power supply. The two power supply outputs should be isolated from each other by utilizing diodes or other switching arrangements. E.g. two 10A power supplies are needed to achieve a 10A redundant system.

N+1 Redundancy Use of three or more identical power

supplies in parallel, which are allowed to be connected in parallel for higher output currents, to provide continued operation following most failures in a single power supply. All power supply outputs should be isolated from each other by utilizing diodes or other switching arrangements. E.g.: To achieve a 40A redundant system, five 10A power supplies are needed in a N+1 redundant system. Ensure that the utilized power supplies are allowed to be connected in parallel to increase the output power.

ACDCACDCACDCACDCACDCAC

IN 1

IN 2 IN 1

OUT

N+1

Redundancy

OUT

Load

IN 2 IN 1

OUT

IN 2

1+1

Redundancy

ACDCAC

IN 1

OUT

Load

IN 2

Jan. 2017 / Rev. 2.0 DS-PIRD20.241 All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted

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PIRD20.241

PIANO-Series

DC 12-28V, 20A, DUAL INPUT REDUNDANCY MODULE

1. INTENDED USE

This redundancy module is designed for installation in an enclosure and is intended for the general use such as in industrial control, office, communication, and instrumentation equipment.

This redundancy module can be used with any type of power supply as long as the maximum output current ratings are not exceeded. It is suitable for power supplies with constant current overload behavior as well as any kind of “Hiccup” overload behavior.

Do not use this redundancy module in equipment, where malfunction may cause severe personal injury or threaten human life.

2. INSTALLATION REQUIREMENTS

This device may only be installed and put into operation by qualified personnel. This device does not contain serviceable parts. Do not energize with wrong input polarity. Device might get damaged. If damage or malfunction should occur during installation or operation, immediately turn power off and send unit to

the factory for inspection. Mount the unit on a DIN-rail so that the input terminals are located on the top and the output terminals on the

bottom of the unit. This device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do

not cover the ventilation grid (e.g. cable conduits) by more than 30%! Keep the following installation clearances:

40mm on top, 20mm on the bottom, 5mm on the left and right sides are recommended when the device is loaded permanently with more than 50% of the rated output current. Increase the side clearance to 15mm in case the adjacent device is a heat source (e.g. another power supply).

The input must be powered from a SELV source (according to IEC 60950-1), a PELV source (according to IEC 62477-1) or an Isolated Secondary Circuit (according to UL 508).

Do not ground or earth the positive output pole which could prevent redundancy in case of a ground failure. Ground the negative output pole when needed.

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 open, modify or repair the unit.

- 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.

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

Jan. 2017 / Rev. 2.0 DS-PIRD20.241 All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted

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PIRD20.241

PIANO-Series

DC 12-28V, 20A, DUAL INPUT REDUNDANCY MODULE

3. INPUT AND OUTPUT CHARACTERISTICS

Number of inputs - 2 Number of outputs - 1 Input voltage nom. DC 12-28V ±25% Input voltage range - 9-35Vdc Voltage drop, input to output typ. 0.46V at 2x5A, see Fig. 3-1 typ. 0.56V at 2x10A, see Fig. 3-1 Input current nom. 2x 0-10A continuous nom. 2x 10-16A for 5 seconds Peak input current max. 1000A for maximal 10ms per input Output current nom. 20A continuous nom. 20-32A for 5 seconds max.

26A *) at continuous overload or short circuit Reverse current max. 4mA per input, -40°C to +70°C Reverse voltage max. 45Vdc voltage applied to the output, continuously allowed

*) Ensure that the continuous output current does not exceed 26A. Check the short-circuit current of the power sources and if the power

source can deliver more than 26A together, use an appropriate fuse on the output.

Fig. 3-1 Input to output voltage drop Fig. 3-2 Test setup for voltage drop measurements

Voltage Drop, typ.

600mV

500mV

400mV

300mV

200mV

100mV

Output:

Input:

0 0

Input, Output Current

5A 15A 20A10A

2x5A2x2.5A

2x10A2x7.5A

PIC120.241x or PIC240.241x

24V, 5A or 24V, 10A

PIC120.241x or PIC240.241x

24V, 5A or 24V, 10A

I1I2=

PIRD20.241

Input 1

Input 2

U2U1= Voltage Drop

Output

Variable

Load,

OUT

0-20A

Output

OUT

U1=

OUT

Jan. 2017 / Rev. 2.0 DS-PIRD20.241 All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted

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PIRD20.241

PIANO-Series

DC 12-28V, 20A, DUAL INPUT REDUNDANCY MODULE

4. POWER LOSSES

Power losses typ. typ.

Fig. 4-1 Power losses at 25°C

Power Losses, typ.

12W

0510

Output Current

0W at no load (stand-by)

4.6W at 24V and 2x5A input current

11.2W

at 24V and 2x10A input current

20A15

5. LIFETIME EXPECTANCY AND MTBF

The redundancy module has two input channels which are completely independent from each other. The dual input redundancy module can be considered as two single redundancy modules combined together in one housing. The only common point is the circuit trace that ties the two separate circuits together at the output.

The MTBF figures below are for the entire dual input module. If the MTBF number of only one path is needed, simply double the value from the table.

Input / output current conditions

Lifetime expectancy

*) min. 113 000h 309 000h

min. 320 000h*) 874 000h*) at 24V and 25°C MTBF

**) SN 29500, IEC 61709 7 837 000h 20 310 000h at 24V 40°C

19 408 000h 46 382 000h at 24V 25°C MTBF

**) MIL HDBK 217F 1 774 000h 1 817 000h at 24Vand 40°C (Ground Fixed GF40)

2 709 000h 2 782 000h at 24Vand 25°C (Ground Fixed GF25) 3 675 000h 3 707 000h at 24Vand 40°C (Ground Benign GB40) 5 620 000h 5 674 000h at 24Vand 25°C (Ground Benign GB25)

*) 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.

**) 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.

N+1

Redundancy

Input: 2x10A

Output: 20A

1+1

Redundancy

Input: 2x5A

Output: 10A

at 24V and 40°C

Jan. 2017 / Rev. 2.0 DS-PIRD20.241 All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted

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