Allen-Bradley micrologix 1500, Руководство пользователя

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Publication 1764-UM001A-US-P
Installing Your Controller 2-19
Compact I/O
Attach and Lock Module (Module-to-Controller or
Module-to-Module)
A Compact I/O module can be attached to the controller or an adjacent I/O
module before or after mounting to the panel or DIN rail. The module can be
detached and replaced while the system is mounted to a panel or DIN rail.
ATTENTION
!
Remove power before removing or inserting an I/O module.
When you remove or insert a module with power applied, an
electrical arc may occur. An electrical arc can cause personal
injury or property damage by:
•
sending an erroneous signal to your system’s field devices,
causing the controller to fault
•
causing an explosion in a hazardous environment
Electrical arcing causes excessive wear to contacts on both the
module and its mating connector. Worn contacts may create
electrical resistance, reducing product reliability.
ATTENTION
!
When attaching I/O modules, it is very important that they are
securely locked together to ensure proper electrical connection.
AB Spares