Redundant Systems
SUPREMA
237
US
Installation of the MAR Module
This module is used for redundant evaluation of the input signals together with a second, redun-
dant MDA module.
It is plugged on the MAI module. The analog output signals of the MPI module or MCI module are
digitised in parallel to the MAI module by a 12 bit ADC, and are transferred to the second
MDA module via its own SPI Bus.
Here, the function is identical to the MAI module.
For connecting the MAR module, the MAI module has to be unplugged from the rack which must
be voltage-free. For every MAI module, a MAR module is necessary.
Fig. 175 MAI Module with MAR Module
Installation of MCP and MDA Module
The second MCP module must be plugged into rack position Slot 2, and the second MDA module
into rack position Slot 5.
Before plugging the modules, the SUPREMA system must be voltage-free.
These modules are normally operated as CAN B, a hardware configuration is not necessary.
Output Drivers/Relay Outputs
The MGO modules provide switching outputs (24V DC / 300 mA, short-circuit safe and overload
safe) for control of information and alarms (LEDs, relays, solenoid valves etc.). In redundant sys-
tems, both channels must have the same number of MGO modules connected.
If relays are needed instead of the driver outputs, because a separation of potentials is required
or other voltages have to be switched, the relay modules MRO 8 TS or MRO 16 TS may be used.
Both modules are suitable for “G” or Top Hat type DIN rail mounting and provide 8 relay outputs
per module in a compact design. The MRO 8 TS module has 1 changeover contact per relay. Con-
nection to the relay contacts is via screw terminals.
The use of MRO 16 TS modules permits the redundant lay out of the following wiring and control
of actuating and notice elements.
At use of MRO 8 TS modules only the non-redundant control of actuating and notice elements is
possible.
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