Log in News & Media | Downloads | Corporate | Careers | Legal Notes
+49 911 99 33 5-0
info@men.de

PU3 - Power Supply Unit, 36 to 48 VDC, 35 W

3U 8 HP PSU

The PU3 3U 8HP power supply unit is a plug-in device for 19" systems (e.g. VMEbus, CompactPCI) and is especially designed for railway computer systems, being fully compliant with EN 50155.

Download data sheet

  • PU3 Product Image0712-0002 Configuration example
  • PU3 Product Image

Main Features

  • 19" rack mountable
  • 3U, 8 HP
  • Input 36 to 48 VDC nom. (25.2..60 V)
  • Max. input voltage range 21.6 to 67.2 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)
PU3 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: 36-48 VDC
  • Wide input range: 0.7 x nominal voltage < nominal voltage < 1.25 x nominal voltage (according to EN50155)
    • 25.2..60 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)
    • 21.6..67.2 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 PU3 Models
0712-0003

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

Related Hardware
0712-0002
PU2 - Power Supply Unit, 24 VDC, 35 W

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

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