KT8
d-SC Remote I/O Extension for 8 Cards

Main Features
- For Applications up to SIL4 (EN5012x) or SIL3 (IEC61508)
- Safe I/O boards
- Certification packages available
- Distributed safe I/O and controller boxes connected via real-time Ethernet
- Support for QNX safe operating system
- Compact 40 HP housing for remote locations
- Full EN 50155 compliance
- Rack-mounted or wall-mounted
Safe Remote I/O for Train Control Systems
KT8 is a safe, remote I/O box inside the duagon SAFE CONTROL (d-SC) System.The modular system platform d-SC is usable for safety-critical train applications like train control, automatic train operation (ATO) and automatic train protection (ATP) up to SIL 4 (EN5012x) or SIL 3 (IEC61508).
The KT8 system consists of the head unit K100 and d-SC I/O board slots. The I/O boards are completely configurable and all system components are directly linked via Ethernet over the backplane. The head unit K100 provides the EtherCAT connections to other d-SC system boxes, the power input for the system and two hex switches. With the hex switches of the K100 the unique chassis ID within an EtherCAT network is defined.
Modular I/O Configuration
Based on modular 19" technology, KT8 provides eight slots for safe I/O cards, which can be configured as built-to-order (BTO) options. d-SC I/O cards support the common I/O requirements requested in trains. The KT series of systems provides scalable sizes of eight slots, six slots and four slots.
Part of the duagon SAFE CONTROL System
d-SC is a modular SIL 4 certifiable family of CompactPCI-based standard products usable for every kind of safety-critical railway application - from a single function to the main control system of the train. It can be configured to control anything in the train that requires functional safety - under SIL 4, SIL 3 or SIL 2 requirements. d-SC communicates via standard EtherCAT real-time Ethernet and interfaces to any type of consist fieldbus network like MVB, CANopen, Profinet etc. This makes it easy to integrate into a TCN network as well as into regionally different Train Control Systems like ETCS, CTCS, ATCS or Klub-U. The high level of flexibility of d-SC results in significant cost and time savings during computerization of the train.
Compact and Cost-Saving Remote I/O
Being modular and SIL 4 certifiable, the KT series reduces the certification risk and efforts. This makes both your system costs and project schedule predictable. All KT systems have a dedicated EtherCAT component, the I/O head, for interconnection of the boxes and power supply. This in turn reduces cabling. I/O functions can still be located close to the remote actors and sensors, with fast data transmission within the d-SC system. The compact format with a maximum width of 40 HP and a reduced depth compared to standard 3U systems allows installation even where space is very restricted, simplifying retrofitting of older trains.
Certification and Standards Compliance Included
Safety-related d-SC components come with certification packages and complete support for the safe operating system QNX, including safe protocols, I/O framework etc. All d-SC components that are safety-relevant are developed according to EN 50128 and EN 50129 standards and comply with all environmental requirements of EN 50155 for rolling stock: temperature, shock, vibration, humidity, dust, isolation, PSU hold-up times, EMC regulations etc.
Mounting and Cooling Options
The system can be wall or rack-mounted, also on a DIN rail, and is air cooled.
- Ethernet
- Two 4-pin M12 connectors, D-coded, 100BASE-T
- Four link and activity LEDs (two per channel)
- d-SC system control
- Two hex switches to configure chassis ID
- Power supply
- One power inlet connector
- One voltage status LED
- Safe I/O
- As configured using plug-in boards
- d-SC I/O Board
- Configurable: yes
- Possible in slots: 1, 2, 3, 4, 5, 6, 7, 8
- Possible Configurations
- Supply voltage
- 24 V, 36 V, 48 V, 72 V, 96 V, 110 V DC nominal; 14.4 to 154 V max. (EN 50155)
- Power interruption class S2 (10 ms) (EN 50155)
- Power consumption
- 16 W approx. (with 8x K1)
- 58 W max.
- Dimensions
- (W) 210 mm, (D) 133 mm, (H) 133 mm without brackets and connectors
- Mounting Possibilities
- Wall/flat surface
- Rack in 19" cabinet
- DIN-rail
- Two systems side-by-side to build a single 19" chassis
- Weight
- 1450 g (barebone configuration)
- Cooling concept
- Air-cooled, airflow 0.5 m/s
- Compliance level: The product is tested and qualified on product model level. Compliance varies between different product models.
- Operating temperature: -40 °C to +70 °C (EN 50125-3:2003, class T2, cubicle, with class T2 maximum extended by 5 °C)
- Storage temperature: -40 °C (EN 60068-2-1:2007, Ab) to +85 °C (EN 60068-2-2:2007, Bb)
- Altitude: +3000m max. (EN 50125-3:2003, class AX)
- Humidity: 100 % RH max. (EN 50125-3:2003, shelter N.C.C., class T1/T2/TX) Non-condensing
- Pollution degree: EN 50124-1:2017, class PD3
- Overvoltage category: EN 50124-1:2017, class OV1
- Shock: 11 ms @ 20 m/s² (EN 50125-3:2003, in a switch cabinet 1 m to 3 m from the track)
- Vibration: 2.3 m/s² (EN 50125-3:2003, in a switch cabinet 1 m to 3 m from the track)
- Electrical safety
- EN 50124-1:2017
- EN 62368-1:2014 + AC:2015
- EMC emission
- EN 50121-4:2016
- EN 61000-6-4:2007 + A1:2011
- EN IEC 61000-6-4:2019
- EMC immunity: EN 50121-4:2016
- Fire protection: for compliance to EN 62368-1:2014 + AC:2015 a fire enclosure is required
- Compliance level
- The product is tested and qualified on product model level. Compliance varies between different product models.
- The product is prepared for use in EN 50155 systems. Some parameters are system-dependent and are specified on system level.
- Operating temperature: -40 °C to +70 °C, +85 °C for 10 min (EN 50155:2021, class OT4, ST1)
- Rapid temperature variations: EN 50155:2021, class H1, no requirements
- Storage temperature: -40 °C (EN 50155:2021) to +85 °C (EN 60068-2-2, Bb)
- Altitude: +3000 m max. (EN 50125-1:2014, class AX)
- Pollution degree: EN 50124-1:2017, class PD2
- Overvoltage category: EN 50124-1:2017, class OV1
- Humidity: +55 °C and +25 °C, 100 % RH max. (EN 50155:2021)
- Shock: 30 ms @ 50 m/s² (EN 61373:2010/AC:2017-09, vehicle body, cat. 1, class B)
- Vibration: 10 min @ 2.02 m/s² (functional) and 5 h @ 11.44 m/s² (long-life) (EN 61373:2010/AC:2017-09, vehicle body, cat. 1, class B, double acceleration)
- Electrical safety
- EN 50155:2021
- EN 50153:2014 + A1:2017 + A2:2020
- EN 50124-1:2017
- EN ISO 13732-1:2008
- Fire protection: EN 45545-2:2020, EL9, HL3
- EMC emission: EN 50121-3-2:2016 + A1:2019
- EMC immunity: EN 50121-3-2:2016 + A1:2019
- Protective coatings: EN 50155:2021, class PC2 (Any PCB protected on both sides) except mSATA SSD assembled on F75P
- Useful life: 20 years (EN 50155:2021, class L4)
- The system uses components which may have a shorter useful life. For details contact duagon.
- PACY (Process Data Framework for Cyclic Applications)
- QNX
Standard Models
- 1 slot for I/O head
- 8 d-SC I/O board slots
The barebone configuration comprises the standard I/O head component including the EtherCAT connection and PSU. I/O boards are completely configurable. The Technical Data list all components that can be implemented in the system. Choose the functionality you need and contact duagon's sales team to verify which board combinations are feasible.
Accessories - Miscellaneous
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