Siemens S5-155U System Manual page 320

Installation and Startup
Wiring
8 - 22
Remove a digital input/output module as follows:
Step Action
1 Release the upper locking bar on the subrack and swivel it
upwards and out.
2 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 input at the upper end of
the front connector are thus opened first.
3 Swing the front connector out and lift it away from the
support pin of the module.
4 Release the module, if necessary, by rotating the locking pin
o
by 90 . You can pull the module out of the subrack with a
grip which swivels outwards.
1
Front
Connector
2
3
Figure 8-8 Module with Front Connector
1 Screw
2 Locking pin
3 Support mount
4 Support pin
5 Grip
6 Backplane connector
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.
6
Module
Support Mount
5
Support Pin
4
System Manual
C79000-B8576-C199-03