Siemens S5-135U/155U System Manual page 331

Remove a digital input/output module as follows:
Step
1
2
3
4
Figure 8-8
1
2
3
4
5
6
Wiring Comply with VDE Specifications 0100 and 0160 to carry out the wiring of
the supply and signal lines which are to be connected to the programmable
controllers and front connectors of the modules. Detailed information on the
supply of power, cabinet assembly, cabinet ventilation, cabinet wiring and
protective measures can be found in Chapter 3.
System Manual
C79000-G8576-C199-06
Action
Release the upper locking bar on the subrack and swivel it up-
wards and out.
Slacken the screw in the upper part of the front connector.
This causes the front connector to be pressed out of the female
connector of the module. Contacts F+ and F- of the enable in-
put at the upper end of the front connector are thus opened first.
Swing the front connector out and lift it away from the support
pin of the module.
Release the module, if necessary, by rotating the locking pin by
o
90 . You can pull the module out of the subrack with a grip
which swivels outwards.
1
Front Connector
3
Module with Front Connector
Screw
Locking pin
Support mount
Support pin
Grip
Backplane connector
Digital Input/Output Modules
6
5
4
2
Module
Support Mount
Support Pin
8-19