English (UK) 
Deutsch Axle Counter Az LM
Hitachi Rail's flagship axle counter system for train detection
Our best-selling Axle Counter System Az LM combines the experience of axle counter dedication since 1965 with the latest technology for safe, secure, reliable and cost-efficient train detection. This comprehensive multi-section axle counter solution capable of managing almost any train detection application.
Versatile, Safe, Secure & Reliable in operation
Axle counter system Az LM
Driven by the need to have a reliable train detection system with life cycle costs far below that of track circuits, axle counter systems are being deployed by an ever increasing number of infrastructure managers.
The increasing number of passengers on main line, suburban rail, metro and tramway as well as freight transport on main line, has fuelled the need for an axle counter system which,
- is pushing line availability further without compromising on cost or complexity and
- integrates seamlessly into the classic signalling systems (block signalling), contemporary signalling systems (moving block signalling with intelligence in the infrastructure) and signalling systems of tomorrow (automatic train operation with intelligence on the train).
- the unique availability engineering, which goes beyond features of the product and
- the breakup of the system up into objects, which communicate over IP networks, using where available open protocol standards
Processor board
With a program plug which contains the site-specific engineering data
Serial board
The link between the indoor system and the detection point in the outdoor plant
Parallel board
Connects the control system via relay interface
Power supply
Feeds the CPU, the serial boards and – if supplied – the parallel boards.
Sub rack with one line
Sub rack with two lines
Sub rack with three lines
The sub rack of the indoor equipment can be adjusted according to customer requirements and applications size. All components inside the sub rack communicate via CAN-bus. The power supply as well as CAN-bus transmission is provided via the backplane.
Trackside equipment
Electronic units
Classic: EAK30H
Slimline: EAK30K
The Az LM indoor system is fully interface-compatible to the field proven Hitachi Rail detection points Zp30H and Zp30K.
The outdoor electronic units connect the wheel sensor to the Az LM Evaluator unit:
- The EAK30H can be combined with the classical wheel sensors Sk30 and Sk30H or the slimline wheel sensor Sk30K
- The EAK30K can be combined with the slimline wheel sensor Sk30K
Wheel sensors
Classic: Sk30 and Sk30H
Drill mounting
Slimline: Sk30K
Drill mounting
- top mark clearance
- mounting over the sleeper
- tamping and grinding over mounted wheel sensor
Slimline: Sk30K
Clamp mounting
- No drilling
- Short installation and removal times
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Indoor equipment |
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Format of rack 19“; 3, 6 or 9 height units of subrack | |
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2oo2 and 2oo3 | |
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24, 48 or 60VDC | |
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Class T1 and T2 [EN 50125-3] -20 … +55 °C |
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Class TX [EN 50125-3] | |
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Class AX [EN 50125-3] < 2000 m above sea level |
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Separation of interfaces according [EN50124-1] | |
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[EN 50124-1] PD2 [EN 50125-3] 3B1, 3C2, 3S1 |
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[EN50125-3] | |
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[EN 50121-4] [EN 50238-3] (Rolling Stock) |
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SIL 4 [EN 50129] | |
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Redundant communication interface between detection points to evaluator via (standard) TCP/IP network (up to Category 3 [EN50159]). Vital and redundant interface to other ACEs for 'shared detection points' (e.g. block applications). Vital and redundant interface to the interlocking via SAHARA protocol. |
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Trackside equipment |
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IP67 | |
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24VDC or 60-120VDC | |
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Class T1 und T2 [EN 50125-3] - 40 ... + 70 °C |
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Class TX (with Tunnel) [EN 50125-3] up to 100% (< 60 % average/year) |
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Class AX [EN 50125-3] < 2000 m above sea level |
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Separation of interfaces according [EN50124-1] | |
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[EN 50124-1] PD4
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[EN50125-3] | |
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[EN 50121-4] [EN 50238-3] (Rolling Stock) |
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