M-Max 400 ST/USO – Rugged Industrial Error-free Computer with UPS Subsystem

The M-Max 400 ST/USO is an error‑free rugged computer for on‑board and off-the-shelf applications. It provides error-free signaling information processing, based on 2-out-of-2 architecture in compliance with CENELEC SIL4 specifications.

The M-Max 400 ST/USO contains two identical subsystems connected to each other via internal interface. Each subsystem has its own processing core and a UPS employing an intelligent ultracapacitor-based charging device.

The M-Max 400 ST/USO’s two independent CPUs form a vital processing core and perform calculations (such as interlocking logic) in different ways. Once per cycle they are synchronised with each other to exchange data and perform consistency cross-checks.

The UPS ultracapacitors provide the system with 70 seconds of backup power. The system is designed for use on stationary objects within the railway infrastructure.

Main features:

• 2x Dual CAN
• 2x RS-232
• 2x RS-422
• 2x Ethernet 10/100 Mbps
• Operating system: Linux / Windows / QNX
• Power: +10 to +40 V DC (isolated), AC adapter ~100 to 240 V (optional)
• Power consumption: 2x 12W (maximum 2x 50W)
• Indication: 2x Power ON indicator
• Enclosure: aluminum enclosure, passive cooling system (no fans)
• Mechanical (W x H x L): 294 x 145 x 208 mm
• Operating temperature: -40 to +60 °C, complies with MIL-STD-810G (High temp. method 501.5, Low temp. method 502.5, Procedure I, II)
• Humidity: operating: 5 to 95 % at +25 °C, non-condensing
• Vibration: operating acceleration amplitude up to 2g (3–500 Hz), complies with MIL-STD-810G (Method 514.6, Procedure I, Category 14)
• Shock: maximum peak shock acceleration up to 6g (11 ms), complies with MIL-STD-810G (Method 516.6, Procedure I)
• Dust/Moisture: IP50

About MicroMax Computer Intelligence

MicroMax Computer Intelligence, a U.S. Corporation, was founded in 1979. Specializing in the engineering and design of embedded solutions for harsh environments as well as distribution of industrial computing and communication products, MicroMax’s M-Max systems are highly regarded in the transportation, manufacturing and mining industries. MicroMax, as a manufacturer of industrial computers, takes a customized approach to each client. Our engineering group can design M-Max systems to fit customer-specific technical requirements.