Maintenance
7-13
Distributed I/O Device ET 200M
EWA-4NEB780600602-06
7.6
Replacing the Bus Module
Removing the Bus Module
Only remove bus modules if they are de-energized!
Table 7-7
Removing the bus module
Step
Removing the Bus Module
1.
Put the on/off switch of the power supply module into the 0 position
( : output voltage 0 V).
2.
Remove the modules on the bus module that is 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.
Lock holding the bus
modules together
Lock holding the
module to the rail
BM IM/PS
BM 2
40
BM 1
80
Installing a New Bus Module
Install the new bus module as described in Section 4.2.3.
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