MSA SUPREMA Touch, Installation & Maintenance Instructions Manual

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MSA AUER
MSA
Description of the System
SUPREMATouch 115
US
9.3 System Design Variants
9.4 Bus Protocol
The SUPREMATouch uses the CAN bus protocol. On the Interconnection Board (MIB module),
the DIL switch can be used to set the transfer speed to 10, 20, 50, 125, 250, 500 or 1,000 kBits/s
for all of the connected modules. All modules on one bus must operate at the same bit rate; if one
of the modules uses a different rate, an error state occurs on the bus. This is detected, and ap-
propriate messages are displayed.
Each module receives a code (Node ID) in the range of 1 ... 127 by the use of the DIL switch of
the MIB module board on the basis of its slot in the rack. Each of the modules on one bus must
have its own code. If duplicate codes are detected, an error message is generated.
9.5 Descriptions of the Modules
Measurement Value Input (MDA/MAI/MAR/MPI/MFI/MSI/MCI Module)
The measurement values are acquired by means of the following units
MAI Module: Analog Input Unit
The MAI module is provided to operate 8 sensors and to process the input signals of those sen-
sors. The power supply outputs for the sensors and the signal inputs are protected against short-
circuits and overloads in the 24 VDC power system.
An MCI or an MPI module can be plugged into the MAI module for each input to ensure that each
sensor is supplied with the correct power and that the associated signals are evaluated correctly.
The bridge current, zero point, and sensitivity of the MPI modules can be adjusted by the use of
the display and the adjusting elements on the MAI module (Attention: required only when a sensor
is replaced and with manual presetting).
• 19” racks for up to 64 sensors.
• System modules installed in racks.
• MAI Module ANALOG INPUT Module
(signal proc digitisation for 8 inputs).
• MAR Module ANALOG REDUNDANT UNIT
(redundant signal input, digitisation).
• MPI Module PASSIVE INPUT UNIT
(signal processing for passive catalytic and semiconductor sensors).
• MCI Module CURRENT INPUT UNIT MCI (signal processing for 0 ... 20 mA)
MCI BFE (BFE = Smoldering Fire Detection) (Signal processing for
0 ... 20 mA especially for DF 8501, DF 8502, DF 8510 fire detectors).
• MFI Module Fire Input Module
(Power supply and signal processing for automatic and push-button
fire detectors).
• MSI Module Switch Input Module
(Power supply and signal processing for external switches).
• MDA Module DATA ACQUISITION UNIT
(measurement signal processing).