REV 0, June 2005Page 196
Operation Manual SUPREMA
7. Maintenance and Service
Attention: Generally, all plug-in cards must only be replaced when the voltage to
the SUPREMA system has been shut off. Pulling out and plugging the plug-in cards
as well must only be effected after having disconnected the supply voltage
connections.
In the following, the procedure for replacing individual modules is described.
7.4.1 Plug-In Cards
Replacement of the MCP and MDO Modules
The MCP module and the MDO module are responsible for signal processing, signal
management, and the storage of configuration data, among other things, in the system. The
voltage to the system must therefore be shut off before these modules can be replaced.
The modules must be replaced by the following sequence of steps:
• Safeguard the system configuration (setup/measure points, relay outputs, system).
• Cut off the power to the system (e.g., by disconnecting the supply voltage connections at
the MIB module
see figure 5-45 MIB-Module, Supply Voltage Terminals.
Note: When rail-mounted relay modules are being used, the triggering of an alarm
associated with the shut-off of the voltage can be prevented by locking the relays
on the MRC-TS module, provided that the MRC-TS module is supplied with a voltage
separate from that of the system (see section 5.7.2 Relay Inhibit).
• Replace the MCP, MDO or MCP and MDO modules (be careful of the ribbon cable
connection between the MCP and the MDO modules).
• Turn the voltage supply back on.
• Reconfigure the system.
• Unlock the relays again if necessary.
Replacement of the MDA Module
It is necessary to turn off the system to replace the MDA module. To prevent alarms and failure
messages, the measure points assigned to the MDA module or the relays assigned to the
measure points
(see section 5.7.2 Relay Inhibit) Inhibit) must be inhibited.
Replacement of MAI, MCI, and MPI Modules
It is necessary to turn off the system to replace the MAI module. To avoid alarms and failure
messages, the measure points assigned to the MAI module or the relays assigned to the measure
points
(see section 5.7.2 Relay Inhibit) must be inhibited.
If the MPI or MCI module is also to be replaced along with the MAI module, care must be taken
to ensure that the correct assignment to the connected sensors is preserved (see section 5.3.2
Inserting the Adapter Modules).
When MPI modules are being replaced, the following points must be kept in mind:
• The preadjustment of the MAI module
(see section 6.3.1 Presetting of Passive Sensors)
must be performed again.
• The type of MPI must correspond to the type of connected sensor.
(see table 5-10: Types
of MPI Modules).
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