G.G. Tronics

Train Collision Avoidance System TCAS-G620 A scalable KAVACH system

TCAS-G620 is a fail-safe, reliable and user-friendly 2x2oo2 architecture-based Train Collision Avoidance System called KAVACH and is also known as Indian Railways Automatic Train Protection System (IRATP).
Complies with RDSO specification No. RDSO/SPN/196/2012 Version 3.2.
Developed to meet CENELEC SIL-4 standard EN50126, 50128, 50129, 50159 Part A and B and also being processed for ISA certification from M/s Italiar Certifier Italy
EMI / EMC tests are being carried out to meet EN61000 and EN55016 standards.
Kavach prevents Signal Passing at Danger (SPAD), to control train speed within specified limits, to indicate Movement Authority or/and display Signal Aspect in Loco pilot’s cab and to further reduce the probability of train collisions in block sections and on running lines at stations through certain non-signaling based protections

More reliable with 2 X 2oo2 of architecture.
Onboard OFC connectivity for efficiency & future ready.
Extendable to 1024 Input is one of the highest with the scalable feature.
On-Board Diagnostic port in each card.
LEDs on each card for status analysis.
On-board FPGA for future expansion.
Double cutting provision for input.
Modules common in STCAS, LTCAS & RIU are interchangeable. Reduces spare handling cost.
Dedicated Modules for EULYNX for compatibility with all vendors and to reduce the lifecycle cost of signalling systems
Nominal Input Voltage is 110V DC for normal functioning of STCAS, however, STCAS works normally for the input voltage between 88V to 143V.
Ethernet-OFC bidirectional Switch to form ring between STCAS & RIUs in six directions.
Supports hot-swapping of modules in STCAS.
Hardware compatible for the next version of TCAS and supports communication over the LTE network. of Railways.
Stable operation at -20 to +70 Degree Celsius.

More reliable with 2 X 2oo2 of architecture.
On-board LTE capability to suit LTE-R
Hot-swappable technology to reduce downtime & hindrance free.
Vibration effective MIL grade connectors with locking arrangements.
It can handle 32 cab input with Double cutting provision.
On-Board Diagnostic port in each card.
Provision to include Balise for compatibility to work in ETCS area
LEDs on each card for status analysis.
Modular power supply architecture.
Supports hot-swapping of modules in LTCAS .
On-board FPGA for future expansion.
Wide range input power supply compatibility.
Nominal Input Voltage is 110V DC for normal functioning of LTCAS, however, LTCAS works normally for the input voltage between 88V to 143V.

GTSM-OCIP module works on power supply 24V DC.
GTSM-OCIP module has 2 independent redundant serial interfaces to communicate with GTVCOM of STCAS.
GTSM-OCIP module has SM-KEY interface for actuating (i.e., SM-KEY IN) GTSM-OCIP operations.
The SOS generation and cancellation are not allowed under un-actuated SM-KEY (OUT).
Audible buzzer to attract station manager attention.
GTSM-OCIP has LCD display for GPS, GSM, radio modem status information.

Station TCAS can handle a maximum of 1024 inputs.
2 CPU modules, with 2 Micro Controllers on each card working in 2oo2 architecture with diversified hardware
All the 32 input channels of each TIN card are isolated from each other.
GTO module drives 16 isolated vital outputs.
Communication card consists of interfaces like On-Board OFC, RS485/422 and Ethernet to interface with the other subsystems.
Multi Visual Interface with GSM/LTE to communicate with Network Monitoring System and Key Management System.
GTRI module provides the necessary interface between Station TCAS and Radio Modem over OFC to reduce transmission loss.
GTCC module has 6 non-resettable 6-digit counters for BIU Isolation, SoS and Trip operation. Three 6-digit counters are spare for future use.

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