| Microprocessor control system (type SATREC-MMA-21) |
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The SATREC-MMA-21 micro-controller is a flexible command system for the command, control and diagnose equipment used for the air conditioning installations on the railway coaches. The system is built within a double Eurocard rack, having up to 7 electronical cards connected through a main board. |
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| technical specifications |
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Input voltage : 24Vdc
(-30%...+25%) |
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Output voltages: ±15Vdc,
+5Vdc, +24Vdc (filtrată) |
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Mean current : 1,5A |
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Temperature range: -30°C..+70°C |
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IP20 protection degree |
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| basic functions |
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measurement of external air temperature, treated air temperature and the battery voltage |
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communication with local adjustments modules |
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select the operation mode accordind to UIC standards for temperature and ventilation |
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command of power elements according to the selected mode |
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events memorising and storage on a non-volatile memory |
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local signals for operating modes and damages |
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| characteristics |
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Philips
80C552 microprocessor, 8 bytes |
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16 digital inputs/outputs on every inputs(2)/outputs(2) card |
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6 analog inputs, 1
analog output |
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RS232/RS485 communication ports |
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Display for error codes and system status |
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Non-volatile events memory (holding time: 10 ani) |
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"Black-Box" function,
monitoring 12 parameters |
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Real-time clock |
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| dimensions |
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L x l x h = 305 x 260 x
265 mm |
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weight = 5,5 ± 0,5 kg |
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| < back |
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