It is a non-co-operative, user-friendly push button type Block Instrument capable of providing the last vehicle verification information in both single & double line sections. The Block Panel provided, offers easy-to-understand audio-visual indications for all vital information. The unique design of interlocking circuits and input/outputs through Q-series relays provide galvanic isolation, making the system usable in both RE & Non-RE sections.
The system is media independent i.e. it works on Copper cable, OFC or microwave without hampering the fail-safety of the operation. The schematic diagrams below show the working ofthe system in Single & Double Line.
The Block panel working with SSDAC, Relay logic & UFSBI is manufactured as per the RDSO’s guidelines. The system is defined as following:
This system comprises of 4 sub-systems each of which are validated separately for its fail-safety by the relevant organizations:
Research Design & Standards Organization (RDSO), Lucknow, Ministry of Railways, Govt. of India