Replacing An Ex I/O Module And Changing The Type - Siemens SIMATIC ET 200SP HA System Manual

Service and maintenance
9.4 Change Ex module group
9.4.2

Replacing an Ex I/O module and changing the type

Requirements
• The application planning is completed.
See section Plant planning (Page 29).
• The Ex BaseUnit is suitable for accommodating the new I/O module.
• The wiring has been or will be adapted to the new I/O module.
• The configuration has been or will be adapted to the new I/O module.
NOTICE
Do not manipulate the coding element
Changes to the coding element can result in dangerous states in your plant and/or damage to
the outputs of the I/O module.
To avoid physical damage, do not manipulate the coding.
You can find information on the coding element in the section "Plugging in an Ex I/O module
or BU cover (Page 57)".
Note
Module in Zone 2
In general, it is not allowed to pull or plug modules in Zone 2.
Before starting work, ensure that no explosive atmosphere is present and that the power supply
is switched off.
88
Modules for devices in a hazardous area
System Manual, 04/2021, A5E50165138-AA