Maintenance; Removing And Inserting I/O Modules - Siemens SIMATIC ET 200SP System Manual

Maintenance

12.1

Removing and inserting I/O modules

Introduction
The ET 200SP distributed I/O system supports removal and insertion of I/O modules during
operation (RUN mode).
Requirements
The following table describes which modules you may insert and remove under which
conditions:
Table 12- 1 Removal and insertion of modules
Modules
CPU
BusAdapter
CM DP module
Interface module
I/O modules
Server module
Distributed I/O system
System Manual, 12/2015, A5E03576849-AF
Removal and insertion
No
No
No
No
Yes
No
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Digital output modules: only when load is switched off
•
Digital modules: For load voltage above the safe extra-low
•
voltage: only with switched off load voltage supply
Technology modules: only with switched off supply voltage L+
•
AI Energy Meter ST:
•
– only when measuring voltage on primary side is switched
off, or
– without the special current transformer terminal, measuring
voltage and load current must be through the converters,
which means the machine or the load must be switched off
in the process. With the special terminal, the process can
continue because the current transformer is isolated safely.
However, the measuring voltage on the module at the con-
nections UL1-UL3 still needs to be isolated.
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Conditions
12
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