Puls YR20.246 Data Sheet

YR20.246

Y-Series

GENERAL DESCRIPTION

The YR20.246 is a redundancy module for building redundant power supply systems. It is equipped with two input channels and one output. The two inputs are decoupled by MOSFET technology.

The device is equipped with an automated load sharing feature, which can compensate a small voltage imbalance between the power supplies connected to the inputs in order to achieve an even current share. It also monitors the function of the redundancy circuitry and provides a signal in case of a failure or a high output current, which could prevent redundancy if one power supply fails. If this feature is not required the YR20.242 is available.

The redundancy utilizes MOSFETs instead of diodes for the decoupling of the two input channels. This reduces the heat generation and the voltage drop between input and output. The redundancy module does not require an additional auxiliary voltage.

Due to the low power losses, the unit is very slender and only requires 32mm width on the DIN-rail. Large connection terminals allow for a safe and fast installation. The large international approval package makes this unit suitable for nearly every application.

ORDER NUMBERS

Redundancy YR20.246 Module

Accessory ZM11.SIDE Side mount bracket

24-28V, 20A, DUAL REDUNDANCY MODULE

MOSFET REDUNDANCY MODULE

 For 1+1 Redundancy with Automated Load Sharing  Dual Input with Single Output  Redundancy OK Signal Included which Reports the Loss

of Redundancy

 160% (32.5A) Peak Load Capability  Reverse Input Polarity Protection  Full Power Between -40°C and +70°C  Width only 32mm  Rugged Metal Housing  Easy Wiring:

Distribution Terminal for Negative Pole Included

SHORT-FORM DATA

Input voltage DC 24-28V ±25% Input voltage range 18-35Vdc Input current 2x 0-12A ambient <+45°C 2x 0-10A ambient <+70°C Output current 0-24A ambient <+45°C 0-20A ambient <+70°C

Input to output voltage drop

max. 26A

0.1-0.5V

0.2-0.5V

**)

in overload short circuit mode

input: 2x5A input: 2x10A

Power losses 1.7W at no load

2.6-4.7W

5.6-8.7W

**)

input: 2x5A

**)

input: 2x10A Temperature range -40°C to +70°C operational Dimensions 32x124x117mm WxHxD Weight 310g, 0.69lb

*) Currents at voltages below 6V **) Depending on load share function

MARKINGS

IND. CONT. E

UL 508

UL 60950-1

Class I Div 2

planned

IECEx ATEX

Jul. 2017 / Rev. 1.4 DS-YR20.246-EN All parameters are typical values specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

Marine

planned

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YR20.246

Y-Series

24-28V, 20A, DUAL REDUNDANCY MODULE

INDEX

Page Page

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. “Redundancy OK” Relay Contact.......................8

10. “Load Share OK” Relay Contact .........................8

11. Automated Load Sharing....................................9

12. EMC....................................................................10

13. Environment ......................................................11

14. Protection Features ...........................................12

15. Safety Features ..................................................12

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.

16. Dielectric Strength............................................ 12

17. Approvals.......................................................... 13

18. RoHS, REACH and Other Fulfilled Standards .. 13

19. Physical Dimensions and Weight ..................... 14

20. Accessories ........................................................ 15

20.1. ZM11.SIDE - Side Mounting Bracket........15

21. Application Notes............................................. 16

21.1. Using Only One Input Instead of Both

Channels...............................................................16

21.2. Recommendations for Redundancy.........17

21.3. Inductive and Capacitive Loads................17

21.4. Sidewards Installation Clearances............17

21.5. 1+1 Redundancy up to 10A...................... 18

21.6. Mounting Orientations ............................19

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.

ACDCAC

IN 1

IN 2

OUT

Load

Jul. 2017 / Rev. 1.4 DS-YR20.246-EN All parameters are typical values specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

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YR20.246

Y-Series

24-28V, 20A, DUAL 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. If damage or malfunction should occur during installation or operation, immediately turn power off and send unit to

the factory for inspection. To ensure a proper load share function ensure that the wiring between the two power supplies and the redundancy

module is identical. Mount the unit on a DIN-rail so that the input terminals are located on the bottom and the output terminals on the

top of the unit. For other mounting orientations see de-rating requirements of chapter 21.6 in this document. 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). See chapter 21.4 for other allowed clearances when used with the PULS DIMENSION series in a 1+1 redundant configuration.

Use only power supplies with a negligible output ripple voltage in the low frequency range between 50Hz and 10kHz when used in marine applications according to the GL regulations.

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.

Jul. 2017 / Rev. 1.4 DS-YR20.246-EN All parameters are typical values specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

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YR20.246

Y-Series

24-28V, 20A, DUAL REDUNDANCY MODULE

3. INPUT AND OUTPUT CHARACTERISTICS

Number of inputs - 2 Number of outputs - 1 Input voltage nom. DC 24-28V ±25% Input voltage range - 18-35Vdc Voltage drop, input to output typ. 0.1-0.5V at 2x5A, load share function dependent, see Fig. 3-1 typ. 0.2-0.5V at 2x10A, load share function dependent, see Fig. 3-1 typ. 0.24-0.5V at 2x12A, load share function dependent, see Fig. 3-1 Input current nom. 2x 0-12A continuous, ambient temperature < +45°C nom. 2x 0-10A continuous, ambient temperature < +70°C nom. 2x 17A max. 2x 700A for max. 1ms Output current nom. 24A continuous, ambient temperature < +45°C nom. 20A continuous, ambient temperature < +70°C nom. 32.5A for max. 5 seconds

max. 26A in overload /short-circuit (voltage < 6V). Ensure that the

Reverse current max. 1mA at 24V, per input, -40°C to +70°C Reverse voltage max. 40Vdc voltage applied to the output, continuously allowed Output capacitance typ. 320μF

1) The average value (R.M.S. value) of the output current must not exceed the values of the continuous output current.

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

0mV

Output:

Input:

0 0

Depending on

Load Share Regulation

Input / Output Current

5A 15A

2x5A2x2.5A

60°C

25°C

25A

20A10A

2x10A2x7.5A

2x12.5A

for max. 5 seconds

sum of input currents does not exceed this value.

Power Supply

24V, 12A

Power Supply

24V, 12A

I1I2=

YR20.246

Input 1

Input 2

U2U1= Voltage Drop

Output

OUT

Variable

Load, 0-24A

U1=

OUT

Jul. 2017 / Rev. 1.4 DS-YR20.246-EN All parameters are typical values specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

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YR20.246

Y-Series

24-28V, 20A, DUAL REDUNDANCY MODULE

4. POWER LOSSES

Power losses typ. typ.

2.6-4.7W

5.6-8.7W

Standby power losses typ. 1.7W at no output current

Fig. 4-1 Power losses Fig. 4-2 Test setup for power loss measurements

Power Losses, typ

12W

10W

Output:

Input:

25/

20A10A

60°C

25°C

25A

2x12.5A

Depending on

Load Share Regulation

2x5A2x2.5A

Input / Output Current

2x10A2x7.5A

5A 15A

0 0

Power Supply

24V, 12A

Power Supply

24V, 12A

I1I2=

at 2x5A, 25°C ambient temperature at 2x10A, 25°C ambient temperature

YR20.246

Input 1

Input 2

U2U1=Losses

U1=

Output

I1+)(

Output

OUT

Variable

Load, 0-24A

OUT

5. LIFETIME EXPECTANCY AND MTBF

The redundancy module has two input channels which are completely independent from each other. Each control circuit, auxiliary voltage source, or other circuitry in the module are designed separately for each input. 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

372 000h

1 053 000h

**)

MTBF

SN 29500, IEC 61709 2 306 000h 1 954 000h at 24V and 40°C

Input: 2x5A

Output: 10A

182 000h

Input: 2x10A

Output: 20A

516 000h

at 24V and 40°C

at 24V and 25°C

3 913 000h 3 359 000h at 24V and 25°C

**)

MTBF

MIL HDBK 217F 964 000h 858 000h Ground Fixed GF40 (24V and 40°C) 1 379 000h 1 226 000h Ground Fixed GF25 (24V and 25°C) 278 000h 243 000h Ground Benign GB40 (24V and 40°C) 381 000h 330 000h Ground Benign GB25 (24V and 25°C)

*) 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.

Jul. 2017 / Rev. 1.4 DS-YR20.246-EN All parameters are typical values specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

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YR20.246

Y-Series

24-28V, 20A, DUAL REDUNDANCY MODULE

6. TERMINALS AND WIRING

Type Screw termination

Solid wire max. 6mm2 max. 1.5mm2 Stranded wire max. 4mm American Wire Gauge 20-10 AWG AWG 24-16 Max. wire diameter 2.8mm (including ferrule) max. 1.6mm (including ferrules) Wire stripping length 7mm / 0.28inch 7mm / 0.28inch Screwdriver 3.5mm slotted or Pozidrive No 2 not required Recommended tightening torque 0.8Nm, 7lb.in not applicable

Instructions:

a) Use appropriate copper cables that are designed for minimum operating temperatures of:

60°C for ambient up to 45°C and 75°C for ambient up to 60°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) Screws of unused terminal compartments should be securely tightened. e) Ferrules are allowed.

Input and Output Signals

Push-in terminals IP20 Finger safe construction. Suitable for field installation.

max. 1.5mm2

7. FUNCTIONAL DIAGRAM

Input

Voltages

Monitor

Input 1

Input 2

Control

Fig. 7-1 Functional diagram

Input 2Input 1

Load Share

Controller

Output Current

Monitor

Redundancy OK

Controller

Load Share OK

Redundancy OK

Load Share OK Contact

Output current

10A

alarm threshold

20A Output current < IN

Redundancy OK

Redundancy OK Contact

Output

Chassis Ground

Jul. 2017 / Rev. 1.4 DS-YR20.246-EN All parameters are typical values specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

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