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General Rules for Installation
Fitting of the Modules
At a Glance
The discrete input/output modules are powered by the bus of the rack. The modules
may be handled without turning off power supply to the rack, without causing any
danger and without there being any risk of damage or disturbance to the PLC.
Fitting operations (installation, assembly and disassembly) are described below.
Installation Precautions
The discrete modules may be installed in any of the positions in the rack except for
the first two (marked PS and 00) which are reserved for the rack’s power supply
module (BMX CPS ••••) and the processor (BMX P34 ••••) respectively. Power is
supplied by the bus at the bottom of the rack (3.3 V and 24 V).
Before installing a module, you must take off the protective cap from the module
connector located on the rack.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
Disconnect the power to the sensors and pre-actuators and disconnect the
terminal block to carry out assembly and disassembly of the modules.
Failure to follow these instructions will result in death or serious injury.
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