PULS

Redundancy unit

DIMENSION series

Y-series

Dual-input redundancy module (2 x inputs + 1 x output)

built-in decoupl. MOSFET (for 1+1 or N+1 redundancy)
ATEX approval

18Vdc-35Vdc (24Vdc nom.)

20A (at 48Vdc)

24-48Vdc (24Vdc / 48Vdc nom.)

screw-clamp connections

short-circuit protection (26A threshold at 6V)
Series / parallel operation -- 1+1 Redundancy Use of 2 identical power supplies in parallel to provide continued operation following most failures in a single power supply. The 2 power supply outputs should be isolated from each other by utilizing diodes or other switching arrangements.

DIN rail mounting

W32mm x H124mm x D117mm

32 mm

-40...+70 °C

(18-35Vdc input; 2x5A input) 2.6 W
(18-35Vdc input; 2x10A input) 5.6 W

Commercialized

YR20246

(output stage) 320 μF

CE marking
UL 508
UL 60950-1
IEC 60950-1 CB-Scheme
IECEx
ATEX
Class I Div. 2 HazLoc
EAC Registration
EN 61000-6-1 Immunity for residential environments
EN 61000-6-2 Immunity for industrial environments
EN 61000-6-3 Emission for residential environments

(at 40°C; 10A output; 2x5A input) 372000 hours
(at 40°C; 20A output; 2x10A input) 182000 hours
(at 25°C; 10A output; 2x5A input) 1053000 hours
(at 25°C; 20A output; 2x10A input) 516000 hours

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
The YR20.246 is a redundancy module for building redundant power supply systems. It is equipped with 2 input channels and 1 output. The 2 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 1 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 2 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

100-500mVpp (20Hz...20MHz; 50Ω)

2306000h (at 40°C; 2x5A input; MTBF SN 29500 IEC 61709)
1954000h (at 40°C; 2x10A input; MTBF SN 29500 IEC 61709)
3913000h (at 25°C; 2x5A input; MTBF SN 29500 IEC 61709)
3359000h (at 25°C; 2x10A input; MTBF SN 29500 IEC 61709)
964000h (at 40°C; 2x5A input; MTBF MIL HDBK 217F GB40)
858000h (at 40°C; 2x10A input; MTBF MIL HDBK 217F GB40)
1379000h (at 25°C; 2x5A input; MTBF MIL HDBK 217F GB25)
1226000h (at 25°C; 2x10A input; MTBF MIL HDBK 217F GB25)
278000h (at 40°C; 2x5A input; MTBF MIL HDBK 217F GF40)
243000h (at 40°C; 2x10A input; MTBF MIL HDBK 217F GF40)
381000h (at 25°C; 2x5A input; MTBF MIL HDBK 217F GF25)
330000h (at 25°C; 2x10A input; MTBF MIL HDBK 217F GF25)