Siemens IM 153-4 PN, Operating Instructions Manual

Page: 117 / 274

Maintenance and service
7.8 Replacing the bus module
ET 200M
Operating Instructions, 12/2008, EWA-4NEB780600602-08
115
7.8 Replacing the bus module
Removing the bus module
Only remove bus modules if they are de-energized!
Proceed as follows when removing the bus module:
1.
With the on / off switch of the power supply module to 0
( : output voltages 0 V).
2. Remove the modules on the bus module that is to be replaced, on all the bus modules on
the right, as well as the module directly to the left.
3. The bus modules are locked together. On the bus module that is to be replaced, press
down the lock of the bus module on the right, and push the bus module(s) on the right to
the right.
4. On the bus module on the left, press down the lock of the bus module that is to be
replaced and push this one to the right.
5. Using a screwdriver push the lock down towards the rail.
6. Lift the bus module off the rail. You can also pull the bus module out from the right side of
the rail.
%0,036 %0[ %0[
① Lock holding the bus modules together
② Lock holding the module to the rail
Installing a New Bus Module
You fit the new bus module as described in chapter "Installing Active Bus Modules and
Modules (Configuration with Active Bus Modules) (Page 66)".