Schematic diagram and functional description of the Siemens S7-300 AI card 336-4GE00-0AB0.
Thread Content
Schematic diagram and functional description of the Siemens S7-300 AI card 336-4GE00-0AB0. 336 is a fail-safe card; in a normal operating 3-out-of-2 design environment, if one of the cards fails, will normal hot-swapping affect the proper operation of the device?
You misunderstood choosing 2 out of 3. Redundancy increases reliability, not the SIL level. So as long as there is card redundancy, hot swapping is possible.
In the 3-out-of-2 design for card modules, when one card module fails, the system can still function properly, as there are at least two functional input channels available to ensure data reliability. At this time, performing normal hot-plugging operations usually does not affect the proper operation of the device. It should be noted, however, that when performing hot-plugging operations, it is essential to follow the correct procedures and precautions to avoid causing unnecessary damage to the system.