BO23-MT Axle Counter

BO23-MT Axle Counter

BO23-MT is a multisection based axle counter system used for train detection. It consists of BO23-MT evaluator and can be connected to various types of ALTPRO sensors (ZK24-2FM, ZK24-M, ZK24-M1, ZK24-M3). The flexibility of the system makes it ideal for specific applications like rubber-tyred metro, APM, monorail or similar.


One BO23-MT evaluator controls up to 8 counting points configured up to 6 sections. Fail safe long automatic block section control is implemented according to EN50159 using all the existing communication media, transmission systems and networks. The system is highly adaptable according to specific customer requirements. „M“ sensor family (ZK24-M, ZK24-M1, ZK24-M3) is specifically designed to be able to detect all special types of trains.


BO23-MT is developed according to the relevant CENELEC standards (EN50238, EN50126, EN50128, EN50129, EN50121-4, EN50125-3) and certified for the highest safety integrity level SIL4.


There is no need for complex maintenance works. System maintenance includes periodical reviews of the installed indoor and outdoor equipment. Reviews include simple and fast checks of sensor ZK24-2 and BO23-MT evaluator using special tools which are easy to operate.


System analytics is designed to be user friendly and may be done by the Customer independently using software for BO23-MT diagnostics.


Possibility of interfacing with relay and electronic signalling systems. Output information is sent by safety relays – section occupancy, disturbance, failure. Safety direction outputs are also available. If SEC module (remote communications module - optional) is used, Ethernet RJ45 connection of the SEC module is available for connection to a certain network.

System benefits


ALTPRO in the International Exhibition for Track Technology (IAF)