System description
Level Crossing Protection System SPN-900
The SPN-900 system is composed by five cabinets located trackside in its standard configuration. The first cabinet called "Central Cabinet" is located
near the level crossing, the others are: two "Proximity Sensor Cabinet" and two "Railway Signal Cabinet", distributed on either side.
Functionally protection sequence is:
Phase 1. Detection. The Axle Sensor Detector (SDE-900) detects a train axle over it, then the Proximity Sensor Cabinet and notifies the Central
Cabinet that a train is incoming.
Phase 2. Protection. The Central Cabinet receives the indication of a train incoming enabling all the level crossing protection measures (lights, bells,
gates,...) and checking for proper operation. Depending on whether everything is ok, notifing the Railway Signal Cabinet wich signal will show to the
train.
Phase 2. Liberation. After the train leaves the level crossing, all the protection systems return to standby. Additionally, there are mechanisms to
normalize the installation in the unlikely event of a malfunction or anomaly occurs.
Documentation available in PDF
SPN-900: General specifications.
Safety
Safety Integrity Level 4 - SIL4 - according to
CENELEC EN50126, CENELEC EN50128 y
CENELEC EN50129.
SDE-900: Axle sensor.
Cost effective
100% power saving.
Zero CO2 emissions.
Low carbon footprint.
No trenching or cable runs.
No external power supply.
Standards
CENELEC EN-50126. Railway
applications - The specification and
demonstration of Reliability,
Availability, Maintainability and Safety
(RAMS).
CENELEC EN-50128. Railway
applications - Communication,
signalling and processing systems Software for railway control and
protection systems.
CENELEC EN-50129. Railway
SPC-902: Automatic barrier.
Electrical characteristics
DC Supply Voltage Dips, Short
Interruptions and Variations. Tests under
EN61000-4-29.
Electromagnetic Compatibility EN501214.
Emission and immunity tests.
Construction and installation period
Minimun civil works.
No trenching or cable runs.
Without heavy machinery.
Start up in five days.
Configurations
Environmental requirements
applications - Communication,
signalling and processing systems Safety related electronic systems for
signalling.
CENELEC EN-50159-2. Railway
applications - Communication,
signalling and processing systems - Part
2: Safety related communication in open
transmission systems.
CENELEC EN-50121-4. Railway
applications - Electromagnetic
compatibility - Part 4: Emission and
immunity of the signalling and
telecommunications apparatus.
CENELEC EN-50125-3. Railway
applications - Environmental conditions
for equipment - Part 3: Equipment for
signalling and telecommunications.
National Railways Administrators
Approvals
The SPN-900 supports more than 60 presets.
However, thanks to its powerful software, you
can add new configurations to meet the
requeriments of any railway infrastructure
manager.
Remote and centralized supervision
Recorder module SPN-904.
Data transmission
GSM/GPRS/UMTS/3G.
Local monitoring by RS232.
Data dumping to USB pendrive.
Configurable alarms.
More than 500 parameters.
Stadistics.
Inmediate and daily reports in PDF.
Centralization of information from
multiple facilities.
Información accesible by web.
Operating temperature: Between -20ºC
and 70° C.
Saline fog according EN60068-2-55.
Climatic test according EN 60068-2-1,
60068-2-2, 60068-2-66.
Comunications Systems
CENELEC EN50159-2 Safety
comunicacions in open tranmision
systems with level six requirements.
Radio system bandwidth 400-470 MHz.
Selectable channel.
GSM/GPRS/3G/UMTS Comunications.
Dipole and yagi antennas for radio
system.
Dual GPRS/GPS antenna for central
equipment.
Railroad cabinet
The dimensions of the cabinets are:
Height: 1.22m
Width: 0.72m
Depth: 0.72m
There are two types of roof depending if 1 or 2 photovoltaics panels are needed:
Height 1 panel: 0.56m
Height 2 panels: 1.02m
The roof with two panels is only used in the Central Cabinet.
Solar power
Solar panel with monocrystalline
photovoltaic cells.
40 W and 12v photovoltaic panels.
25 year power output lifetime.
Small sized panel.
Encapsulation against hail and vandal
resistant.
Batteries
Block elements of NiCd or lead-gel.
Operating voltage 24 VDC (12 VDC
optional) and 150 Ah capacity.
Temperature sensor to optimize the
parameters and floating charge.
At least 20 days of autonomy to the
system in the absence of external
energy.
Alarm generation in case of low levels
of energy.
20 years lifetime.
Modules
Central Cabinet
SPN-901 Protection module
SPN-902
Track circuit and liberation sensor
module
SPN-903
SPN-904
SPN-906
SPN-909
SDE-900
SPC-900
Radio module
Recorder and comunications module
Power supply module
Central processor module
Axle sensor
Road protection active signals
Proximity Sensor cabinet
SPN-903 Radio module
SPN-906 Power supply module
SPN-907 Proximity sensor module
SDE-900 Axle sensor
Railway Signal Cabinet
SPN-903 Radio module
SPN-905 Railway signal module
SPN-906 Power supply module
SFL-900 Railway signal