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PU2 - Power Supply Unit, 24 VDC, 35 W

3U 8 HP PSU

The PU2 3U 8HP power supply unit is a plug-in device for 19" systems (e.g. VMEbus, CompactPCI) and is especially designed for computer systems in public transport vehicles, being fully compliant with EN 50155.

  • PU2 Product Image0712-0002 Configuration example
  • PU2 Product Image

Main Features

  • 19" rack mountable
  • 3U, 8 HP
  • Input 24 VDC nom. (16.8 to 30 V)
  • Max. input voltage range 14.4 to 33.6 V (according to EN 50155)
  • Output 3.3 V and 5 V
  • Power 35 W
  • H15 DIN 41612 plug connector (front and rear)
  • SMBus
  • External I/Os for key function
  • -40 to +85°C screened
  • Conformal coating
  • Complies with EN 50155 (railways)
PU2 Product Image

Technical Data

Microcontroller
  • Output voltage and temperature supervision (readable via SMBus)
  • Overtemperature and overvoltage shutdown
  • Communication with CPU
  • Watchdog functionality
SMBus
  • Signals on back connector
  • Voltage level 3.3 V
  • Controlled by CPU
  • Communication between the power supply unit and the CPU
Binary I/O
  • 3 binary inputs
    • Max. voltage 154 VDC
    • Electrically isolated
    • External switch (key) with binary input
    • Switch-on by key input or wake on time
    • Switch-off by key input or software
    • Status of binary inputs readable via SMBus
    • User-specific functionality (depending on firmware)
  • 3 binary outputs
    • Max. voltage 154 VDC
    • Isolated by relays
    • User-specific functionality (controllable via SMBus)
    • Maximum switching power: 60 W
Miscellaneous
  • DC/DC Converter
    • Fuse-protected
  • Two status LEDs on front panel
    • Green LED indicates correct input voltage
    • Yellow LED indicates correct output voltage
  • Alternative power supply at the backplane for use as redundant PSU
  • Short circuit protection
  • Reverse polarity protection by internal protector
  • Fixed switching frequency: 250 KHz
Input Characteristics
  • Nominal voltage input: 24 VDC
  • Wide input range: 0.7 x nominal voltage < nominal voltage < 1.25 x nominal voltage (according to EN50155)
    • 16.8..30 VDC
  • Max. input voltage range: 0.6 x nominal voltage < nominal voltage < 1.4 x nominal voltage with full functionality for 0.1 s, no damage for 1 s (according to EN50155)
    • 14.4..33.6 VDC
  • No load input power: 900 mW
Output Characteristics
  • Output power (max.): 35 W
  • 5V tolerance: +5%/-3%
  • 3.3V tolerance: ±3%
  • Overvoltage protection: +0.5 V/-0.2 V
  • Overtemperature shutdown: 50°...90°(adjustable by SMBus command)
Connection
Input and output via DIN 41612 plug connector, type H15
Electrical Specifications
  • Isolation (according to EN 50155)
    • Input/output: 1,500 VDC/1,000 Vrms
    • Input/shield: 1,500 VDC/1,000 Vrms
    • Output/shield: 1,500 VDC/1,000 Vrms
    • Ground/shield: 1,500 VDC/1,000 Vrms
  • MTBF: 240,600 h @ 40°C (derived from MIL-HDBK-217F)
Mechanical Specifications
  • Dimensions: 3U, 8HP, 128.4 mm height
  • Integrated heat sink
  • Weight: 665 g
Environmental Specifications
  • Temperature range (operation): -40..+85°C
  • Temperature range (storage): -40..+85°C
  • Airflow: min. 10 m³/h
  • Shock: according to EN 60068-2-27
  • Continuous shock: according to EN 60068-2-29
  • Vibration: according to EN 60068-2-6
  • Protection
    • Class of protection: Class II, EN 60950
    • Degree of protection: IP20 (insert in rack), EN 60529
EMC
Tested according to EN 55022 (radio disturbance), EN 61000-4-2 (ESD), EN 61000-4-4 (burst) and EN 61000-4-5 (surge)
Software Support
  • Driver software for Windows, Linux, VxWorks
  • For more information on supported operating system versions and drivers see Software.

Options

Ordering Information

Standard PU2 Models
0712-0002

PU2 - 3U 8HP PSU, input 24 VDC nominal (16.8..30 V), output 5 V, 3.3 V, 35 W, H15 front/back, SMbus, external I/Os for key function, -40..+85°C screened, conformal coating

Related Hardware
0712-0003
PU3 - Power Supply Unit, 36 to 48 VDC, 35 W

PU3 - 3U 8HP PSU, input 36 VDC nominal (25.2..45 V), output 5 V, 3.3 V, 35 W, H15 front/back, SMbus, external I/Os for key function, -40..+85°C screened, conformal coating

Details
0712-0004
PU4 - Power Supply Unit, 72 to 110 VDC, 35 W

PU4 - 3U 8HP PSU, input 110 VDC nominal (77..137.5 V), output 5 V, 3.3 V, 35 W, H15 front/back, SMbus, external I/Os for key function, -40..+85°C screened, conformal coating

Details

Software

Linux
13MD05-90

MDIS5 System (and Device Driver) Package (MEN) for Linux. This software package includes most standard device drivers available from MEN.

Windows
13AD78-70

MDIS4/2004 / MDIS5 Windows driver (MEN) for PU2, PU3, PU4, PU5, PU6 and CCA Rack PSU controller on SMBus

VxWorks
13AD78-06

MDIS5 low-level driver sources (MEN) for PU2, PU3, PU4, PU5, PU6 and CCA Rack PSU controller on SMBus

Application Examples

Intelligent Well System Control

This control platform for intelligent well systems is realized as a pre-validated 3-slot 3U 24HP CompactPCI system with its own rugged power supply unit.