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.
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)
Technical Data
Microcontroller
- 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)
SMBus
- 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)
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
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
Connection
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
MTBF
190,000+ h @ 40°C according to IEC/TR 62380 (RDF 2000)
EMC
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.
Options
Mechanical Specifications
8HP model with smaller heat sink and derating tbd.
Ordering Information
Standard PU6 Models
17PU06-00
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
Software

13MD05-90
MDIS5 System (and Device Driver) Package (MEN) for Linux. This software package includes most standard device drivers available from MEN.

13AD78-70
MDIS4/2004 / MDIS5 Windows driver (MEN) for PU2, PU3, PU4, PU5, PU6 and CCA Rack PSU controller on SMBus

13AD78-06
MDIS5 low-level driver sources (MEN) for PU2, PU3, PU4, PU5, PU6 and CCA Rack PSU controller on SMBus