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M-Max 400 ST/USO

Rugged Industrial Error-free Computer with UPS Subsystem
  • Details
  • Specification
  • 2 identical subsystems, each has its own processor and a UPS
  • ‘2 out of 2’ architecture
  • UPS uses ultracapacitor power source
  • Operating Temperature: -40 to +60 °C

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.

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.

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.

Technical specifications
Interfaces: 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

Environmental and physical specifications:

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
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