SUPREMATouch
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Description of the System
MSA
US
MSI Module (SWITCH INPUT UNIT)
One MSI module must be plugged into the MAI module for each external switch being monitored.
The module must be configured for the relevant application. (Chapter 10.3)
Functions:
Line control:
At the last switch, an “END OF LINE” resistor must be installed.
In addition, each switch must be provided with a resistor connected in series.
If there is a short circuit or a failure, the output voltage switches to approximately 0 V.
Operation by an external power supply is optional.
MAR Module (Analog Redundant Unit)
This module is used for the redundant processing of input signals in conjunction with a second,
redundant MDA module.
It is plugged into the MAI module. The analog output signals of the MPI or MCI module are digi-
tised in parallel with the MAI module by a 12-bit ADC and transmitted over a separate SPI bus to
the second MDA module.
The function here is identical to that of the MAI module.
MDA Module (Data Acquisition Unit)
This module accepts the measurement values generated by the preceding Analog Input modules
(MAI modules), of which there can be a maximum of 8. This provides the signal processing (cal-
culates the mean) for a maximum of 64 sensors and the results are passed to the MCP module
via the CAN bus.
• Power supply for the switches.
• The output voltage of the module is limited to approximately 14 V and the output current is
limited to approximately 8 mA..
• Evaluate the status of the switches.
• In normal operation, the output voltage (UA) of the module is approximately 0,4 V, in an
alarm situation approximately 1.6 V, and at failures approximately 0 V.
• In an alarm situation the module is non-latching.
• If a latching function is required, it must be programmed in the SUPREMA settings.
• Measurement values from the preceding MAI modules are read via the SPI bus.
• Automatic presetting of the bridge current, zero point and sensitivity in passive sensors with
MPI module through the SPI-Bus (possible only in connection with MDA20)
• Measurement signals are processed in 100-ms cycles; the mean value is calculated over a
period of 1 sec.
• Data is transmitted to the MCP module over the CAN bus.
• All supply voltages are monitored (EXT, INT and BAT) and sent to the MCP for evaluation.
• System Failure relay is activated when a processor error occurs.
• Euro card with a 96-way connector.
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