K7 - 8 Safe Digital Outputs, Low-Side Switching for menTCS

SIL 2 to SIL 4 Modular Train Control System I/O Board

The K7 is a safe digital output card for the modular Train Control System (menTCS) focusing on SIL 1, SIL 2, SIL 3 and SIL 4 applications in rolling stock.

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K7 safe I/O board with 8 binary outputs, low-side switching
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Main Features

8 digital outputs, 24 V, 48 V, 72 V, 96 V, 110 V
300 mA per channel, 1200 mA total
Low-side switch outputs (load to supply voltage)
Optical isolation from other cards
Fail-safe board architecture
Certifiable up to SIL 4 (with report from TÜV SÜD)
Developed acc. to EN 50129, EN 50128, IEC 61508
Extensive supervision functions
EN 50155 fully compliant
-40°C to +85°C (qualified components)
Conformal coating

Technical Data

Digital Outputs

Eight channels
Output voltage
- 24 V, 48 V, 72 V, 96 V, 110 V nom. (EN 50155)
- Voltage supplied from external source
Output current
- 300 mA max. per channel
- 1200 mA max. total
Output type
- Low-side switch outputs (load to supply voltage)

Front Interfaces

Digital I/O
- One 24-pin PCB plug
- Eight output channels
Status LEDs
- Binary channel status, one LED per channel
- I/O error
- FSoE activity
- Real-time Ethernet error
- Real-time Ethernet state indication

Rear Interfaces

EBUS
- Two real-time Ethernet channels, ETG.1000
menTCS FSoE
- Slot ID and chassis ID for unique FSoE address

Supervision and Control

Safe supervisor

Check for overvoltage, undervoltage, excess temperature
Watchdog
Monitor self-test

Backplane Standard

ETG.1000 EBUS

Electrical Specifications

Supply voltage
- +12 V (10.8 to 13.2 V)
Power consumption
- 1.6 W typ.
- 2.5 W max.
Isolation voltage
- 1500 V AC

Mechanical Specifications

Dimensions
- 100 mm x 100 mm, 4 HP
Weight
- 196 g (model 06K007-10)

Environmental Specifications

Classification for railway applications
- EN 50155: Rolling stock, vehicle body
Temperature range (operation)
- -40°C to +85°C (qualified components) (EN 50155, class TX)
Temperature range (storage): -40°C to +85°C
Cooling concept
- Air-cooled, airflow 0.5 m/s
Humidity
- EN 50155: Rolling stock, vehicle body
Vibration/Shock
- EN 50155: Rolling stock, vehicle body class B
Altitude: -300 m to +3000 m
Conformal coating

Reliability

MTBF

750 935 h @ 40°C according to IEC/TR 62380 (RDF 2000) (model 06K007-10)

Safety

Functional Safety
- Certifiable to SIL 2, SIL 3 or SIL 4 according to EN 50129 ("safety case" document and certificate from TÜV SÜD)
- Hazard rate (THR) for safety functions <= 1E-8 / h (single card configuration)
- Board maintains safe state after a failure
Electrical Safety
- EN 50155: Rolling stock, vehicle body
Fire Protection
- EN 45545-2, hazard level HL3

EMC

EN 50155: Rolling stock, vehicle body

Software Support