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RIO2011 Remote I/O Expansion Module

EN 50155 Compliant Remote I/O Expansion Module for Railway Applications on Rail Vehicles.

• Passenger Vehicle Condition Based Monitoring.
• Heating Ventilation Air Conditioning (HVAC) Control Systems.
• Onboard controls for fire protection, power packs and doors.
• Locomotive Performance and Condition Monitoring.

• One Isolated RS485 port for connection with the Master Controller.
• 10 Digital Inputs. 5mA @ 24VDC (Ch1... Ch10).
• 6 Digital Inputs. Configured as: 1.5mA @ 5VDC (Ch11... Ch16). Suitable for use with Dallas DS1820 Digital Temperature sensors.
• 16 Digital Outputs. 24VDC 0.5A with individual short circuit protection with automatic reset.
• 4 Analogue Inputs. NTC Thermistor (Ch1... Ch4).
• Suitable for nominal battery voltages of 24VDC in accordance with EN 50155.
• Operating temperature range: -40°C to +70°C (+85°C for 10 minutes).
• Conformal Coating.
• EN 50155 Compliant.


• Operating Temperature Range: -40°C to +70°C (EN50155 Class OT4).
• Switch-on Extended Operating Temperature Range: To +85°C (EN50155 Class ST1) for 10 min.
• Storage Temperature Range: -40°C to +85°C.
• Relative Humidity: 5% to 95% non-condensing.
• Shock and Vibration: EN 61373:1999 Category 1 – Class B.

Power Supply:

• Nominal Input Voltage: 24 VDC.
• Minimum Input Voltage: 14 VDC (EN50155 Class C1).
• Maximum Input Voltage: 36 VDC.
• Nominal Input Current: 150 mA.


• One (1) Power LED.
• One (1) Communications LED.


• Independent Watchdog Timer.

Digital Inputs:

• Ten (10) digital inputs 5mA @ 24 VDC. Current sourcing (low-side switching) (Ch1... Ch10).
• Six (6) digital inputs. Current sourcing (low-side switching). Configured as: 1.5mA @ 5VDC (Ch11... Ch16). Suitable for use with Dallas DS1820 Digital Temperature sensors.

Digital Outputs:

• Sixteen (16) digital outputs 24 VDC 0.5A.
• Current sinking (low-side switching). Short circuit protection with automatic reset.

Analogue Inputs:

• Four (4) analogue inputs 12 bit resolution. Configured as: NTC Thermistor (Ch1... Ch4).

Communications Ports:

• RS485 isolated port for connection with Master Controller: Three-wire RS485+, RS485-, GND.


• Product Dimensions: 178mm x 172mm x 41mm.
• Enclosure Material: Aluminium with anodised screen printed lid.
• Weight: 0.6kg.

Ingress Protection (IP) Rating:

• IP20 (in accordance with EN 60529).


• MTBF: 1,341,555 hrs @ 40°C Standard: Telcordia SR-332 Issue 2 – Parts Count Method. 


• Power I/O: 5.08mm pitch Plug/Socket Connectors.
• RS485 Plug/Socket: Molex MiniFit Jr 4.2mm pitch Connector.


• EN 50155:2017 Railway Applications – Electronic Equipment used on Rolling Stock.
• EN 50121-3-2:2016 Railway Applications – Electromagnetic Compatibility Part 3-2: Rolling Stock – Apparatus.
• EN 61373:2010 Railway Applications Rolling Stock Equipment Shock and Vibration Tests.
• EN 45545-2:2013+A1:2015 Railway Applications – Fire Protection for Railway Vehicles. Part 2: Requirements for Fire Behaviour of Materials and Components.

Materials Compliance:

• REACH, ROHS, WEEE, EN45545-2.


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