Microprocessor track circuits MRC-U
MRC-U are intended for:
- Occupancy control of track sections and integrity of rail lines;
- ALSN code signals generating.
MRC-U can be used on main-line and industrial railways, as well as in subways
Main functions

Power supply of track circuits
(audio frequency signals), measuring levels of currents and voltages

Generation of ALSN codes

Diagnostics and transmission of information
about track circuits equipment condition to the higher level

Protection against electromagnetic interferences
(caused by atmospheric phenomena, traction currents of 50 Hz frequency and others)

Self-diagnostics,
switch to protective state in case a failure is detected

Implementation of MRС-U will allow to:
Exclude all track circuit coding relays and ALSN
or parallel discrete interface equipment.
Minimize maintenance
due to stability of MRC-U parameters under changing external conditions.

Provide easy interfacing
via digital or parallel discrete interfaces with microprocessors, relay-based interlocking and automatic block signalling systems.

Perform continuous monitoring of cable parameters,
including core-to-core and ground faults.
Provide continuous monitoring of track circuit parameters,
including insulated joint short circuit, rail integrity and residual voltage at the receiver.

Minimize the impact of the “human factor”
by controlling the adjustment processes.
Key features

MRC-U and ALSN signal parameters do not depend on changes in climatic conditions.
Adjustment is performed once during commissioning.

Extended control, measurement, diagnostics
of electrical and time parameters.

Synchronization of ALSN signal generation
within one system (all the routs on a station).
Accuracy and stability of the signals generated.

Generator + audio frequency TC receiver + ALSN generator in one module.
“Hot” redundancy
and module replacement without reconfiguration.

Resistant to traction current harmonics
and other electromagnetic interference.
Quick support and service
provided by the manufacturer for the entire life cycle.


