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PU6 - Power Supply Unit, 24 VDC, 100 W

3U 12 HP PSU

The PU6 is a plug-in power supply unit for 19" systems (e.g. VMEbus, CompactPCI) and is especially designed for computer systems in public transport vehicles, being fully compliant with EN 50155.

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  • PU6 Product ImagePU6 3U 12 HP Power Supply Unit PSU, 24 VDC, 100 W
  • PU6 Product Image

Main Features

  • 3U, 12 HP, 19" rack mountable
  • 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, 5 V, 12 V
  • Power 100 W
  • H15 DIN41612 plug connector (front and rear)
  • SMBus
  • External I/Os for key input function
  • Standby mode (1 W max.)
  • -40 to +85°C screened
  • Conformal coating
  • EN 50155 compliant (holdup time according to Class S2) (railways)
PU6 Product Image

Technical Data

  • Output voltage and temperature supervision (readable via SMBus)
  • Overtemperature and overvoltage shutdown
  • Communication with CPU
  • Watchdog functionality
  • Independent power supply for operation during standby mode (power consumption less than 1 W)
  • Signals on back connector
  • Voltage level 3.3V
  • Controlled by CPU
  • Communication between the power supply unit and the CPU
Binary I/O
  • 1 binary input
    • Voltage level according to external power supply input voltage (max. 33.6 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
  • 1 binary output
    • Voltage level according to external power supply input voltage
    • Isolated by relays
    • User-specific functionality (controllable via SMBus)
    • Maximum switching power: 60W (example 24V/2.5A)
  • 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
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: < 1.6 W in standby mode
Output Characteristics
  • Output power (max.): 100W
  • Output power (min.): 5W
  • 12V tolerance/overvoltage protection: ±5%
  • 5V tolerance/overvoltage protection: +5%/-3%
  • 3.3V tolerance/overvoltage protection: ±3%
  • Overtemperature shutdown: 50°..90°(adjustable by SMBus command)
  • Holdup time according to EN50155 Class S2
Input and output via DIN 41612 plug connector, type H15
Electrical Specifications
Isolation (according to EN50155)
  • Input/output: 1500VDC/1000V eff
  • Input/shield: 1500VDC/1000V eff
  • Output/shield: 1500VDC/1000V eff
  • Ground/shield: 1500VDC/1000V eff
Mechanical Specifications
  • Dimensions: 3U, 12HP, 128.4mm height
  • Integrated heat sink
  • Weight: 1.1 kg
Environmental Specifications
  • Temperature range (operation): -40..+85°C (no derating)
  • Temperature range (storage): -40..+85°C
  • Airflow: min. 10m³/h
  • Shock: according to EN60068-2-27
  • Continuous shock: according to EN60068-2-29
  • Vibration: according to EN60068-2-6
  • Protection
    • Class of protection: Class II, EN 60950
    • Degree of protection: IP20 (insert in rack), EN60529
190,000+ h @ 40°C according to IEC/TR 62380 (RDF 2000)
Tested according to EN55022 (radio disturbance), EN61000-4-2 (ESD), EN61000-4-4 (burst) and EN61000-4-5 (surge)
Software Support
  • Driver software for SMB communication for Windows, Linux, VxWorks
  • For more information on supported operating system versions and drivers see Software.


Ordering Information

Standard PU6 Models

12HP, 100W, wide range input 24 VDC (16.8..30.0 VDC typ. and 14.4..33.6 VDC for 0.1sec), 12V, 5V and 3.3V output, -40..+85°C screened, conformal coating

Related Hardware
PU5 - Power Supply Unit, 110 VDC, 100 W

12HP, 77..137.5 VDC (110 V nom.), 100 W, coated, -40..+85°C screened




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


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


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