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Rockwell Automation Publication 1718-UM001A-EN-E - December 2019
Chapter 1
Product Specifications
The sockets on the discharge side of the module offer 1, 2, 4 and 8 channels to
connect Ex field devices. Using the single-channel modules for controlling
valves, including feedback, two additional binary input signals can be
transmitted from the field. The portfolio is supplemented with 2-channel
modules with shutdown input for emergency shutdown.
When modules are replaced, the new module automatically adopts the settings
of its predecessor. This prevents errors when replacing modules.
The 4-channel universal module processes analog inputs and outputs
depending on the setting. Each of the four channels can be configured
independently of the others.
Figure 8 - 1718 Ex I/O Module
Design and Dimensions of the Modules
The FB remote I/O system is designed in such a way that each I/O module can
be connected to the I/O slot it requires on the backplane. The slots on the
backplane are limited. Depending on the size, for example, a base backplane
can accommodate max. 24 narrow or 12 wide I/O modules.
Power supplies, adapters, and bus termination modules are assigned to fixed
slots. To avoid confusion, these are mechanically coded. Adapters and power
supplies are always wide modules. Bus termination modules are
narrow modules.
Both the I/O modules and the adapters and power supplies are equipped with
LEDs on the front that display the device status.
The I/O modules have connections on the front to which the relevant field
devices are connected. On the back of the I/O modules there is a coding pin