PULS

Redundancy unit

PIANO series

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

diode technology

9Vdc-35Vdc (12Vdc / 24Vdc)

20A (at 28Vdc)
0.5A/+55°C...+70°C (derating)

12-28Vdc (12Vdc / 24Vdc 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. N+1 Redundancy Use of 3 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.

DIN rail mounting

W39mm x H124mm x D124mm

39 mm

Polycarbonate (PC) housing

-40...+70 °C

42A peak inrush (at 230Vac input)
18A peak inrush (at 120Vac input)

Diode

(nom. load) 11.2 W

Commercialized

PIRD20241

CE marking
UL 508
UL 60950-1
IEC 60950-1 CB-Scheme
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
EN 61000-6-4 Emission for industrial environments
EN 55011 / EN 55022 class B Disturbance characteristics

(at 40°C; 2x10A; N+1 Redundancy) 113000 hours
(at 40°C; 2x10A; N+1 Redundancy) 309000 hours
(at 25°C; 2x5A; 1+1 Redundancy) 320000 hours
(at 25°C; 2x5A; 1+1 Redundancy) 874000 hours

Cost effective solution to build redundant systems
Dual input with single output
2 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
The PIRD20.241 is a redundancy module which can be used to build 1+1 and N+1 redundant systems. It is equipped with 2 input channels which can be connected to power supplies with up to 10A output current and 1 output which can carry nominal currents up to 20A. The module is suitable for power supplies with constant current overload behaviour as well as any kind of hiccup overload behaviour. 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.

460mVpp (20Hz...20MHz; 50Ω)

7837000h (at 40°C; N+1 Redundancy; 2x10A input; MTBF SN 29500 IEC 61709)
20310000h (at 40°C; 1+1 Redundancy; 2x5A input; MTBF SN 29500 IEC 61709)
19408000h (at 25°C; N+1 Redundancy; 2x10A input; MTBF SN 29500 IEC 61709)
46382000h (at 25°C; 1+1 Redundancy; 2x5A input; MTBF SN 29500 IEC 61709)
1774000h (at 40°C; N+1 Redundancy; 2x10A input; MTBF MIL HDBK 217F GF40)
1817000h (at 40°C; 1+1 Redundancy; 2x5A input; MTBF MIL HDBK 217F GF40)
2709000h (at 25°C; N+1 Redundancy; 2x10A input; MTBF MIL HDBK 217F GF25)
2782000h (at 25°C; 1+1 Redundancy; 2x5A input; MTBF MIL HDBK 217F GF25)
3675000h (at 40°C; N+1 Redundancy; 2x10A input; MTBF MIL HDBK 217F GB40)
3707000h (at 40°C; 1+1 Redundancy; 2x5A input; MTBF MIL HDBK 217F GB40)
5620000h (at 25°C; N+1 Redundancy; 2x10A input; MTBF MIL HDBK 217F GB25)
5674000h (at 25°C; 1+1 Redundancy; 2x5A input; MTBF MIL HDBK 217F GB25)