7.7
Removing I/O modules
NOTICE
Dangerous plant conditions possible (disconnect the load)
● Inserting or removing digital output modules with applied load and with applied supply
voltage can result in dangerous conditions in your plant.
● I/O modules with output disable switch (see figure below):
If you want to put these modules into operation, you need to press the output disable switch
for 3 seconds in order to disconnect the load from the module.
Only then it is permissible to pull out the module during operation.
I/O modules with no load can run again only after restarting the IM or pulling/plugging.
Failure to comply may result in material damage to the IO device or to the connected sensors.
Insert and remove an I/O module only with disconnected load.
When using in hazardous areas, read the information in section "Currently valid markings and
NOTICE
I/O modules in the I/O redundancy mode for which at least one channel is configured with
"Keep last value"
When the CPU is in "STOP" mode or the PROFINET cable is pulled, the following action are
also prohibited one after the other:
● Replacement of both I/O modules
● Firmware update for both I/O modules
Removal
7.7 Removing I/O modules
ET 200SP HA Distributed I/O system
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Summary of Contents for SIMATIC ET 200SP HA
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