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SICAM RTUs, User Manual SICAM CMIC
DC8-001-2.09, Edition 08.2016
6.4.2 Replacement of a System
The connection of the process signals takes place by means of withdrawable screw terminals.
Since these screw terminals carry the wiring, you do not need to loosen any wires upon mod-
ule exchange. The screw terminals are packed with each I/O module.
The replacement of a module is achievable without a special tool:
•
detach the terminals from the bottom side of the system (power supply at first)
•
detach the communication plugs from the upper side and front of the system
•
remove the system from the DIN rail
•
before replacing the system, you can unlock and withdraw the SD card through pressing,
and then insert it easily in the new system (the application data is stored non-volatile on
the SD card)
•
put the new system in place of the withdrawn system on the DIN rail
•
attach the terminals at the bottom side of the system (power supply at last)
Warning
For modules that operate with voltages >60 V (e.g. DO-6212, DI-6101) care must be taken that manipula-
tion on the peripheral connectors may only be carried out in a de-energized state.
The reason for this is that when withdrawing the upper peripheral connector under voltage, the external
voltage can be conducted through the lower peripheral connector still connected. The pins of the upper
peripheral connector now freely accessible will now conduct the external voltage.
For the replacement of a system please consider the instructions in the sections 1.3.6 , Instal-
lation of the Device and 1.3.7 , Removal/Shifting of the Device .
When replacing a system by the same type (same revision level), the flash card can be eject-
ed and inserted into the new system. The engineering data (parameters and application pro-
gram) stored on the SD card are applied automatically from the system elements of the new
system.
If the relevant type is no longer available, then the appropriate successor product is to be
used. When replacing a system by a another type, an anew parameterization is possibly nec-
essary. This applies in particular, if something in the functionality of a system element (firm-
ware) was changed, or a system element was removed or added. In this case, the corre-
sponding firmware update must be loaded before the parameter-setting (see section
6.5 ,
Firmware Update ).
After the replacement of a system, this is operational after a startup.
Note
Internal modules can not be exchanged.