Siemens S5-135U/155U System Manual page 100

Central Controllers and Expansion Units Power Supply Units
Fitting the Filter
Subdrawer
Option
The filter subdrawer with fixing grid, two plug-in guide rails and the
corresponding filter mats are available as an option (see the ordering
instructions for the order numbers).
Where to Fit the
To insert a filter, you must secure the filter subdrawer to the lower side of the
Filter Subdrawer power supply unit housing.
How to Fit the Proceed as follows:
Filter Subdrawer
Setting the Voltage
Selector Switch
How to Set the On the AC power supply units, the voltage selector switch is situated on the
Voltage Selector
front plate and marked Voltage Selector. You can select a voltage of 120 V or
Switch
230 V. The factory setting is 230 V.
Set the voltage according to your requirements
4-34
Step
1 Install the guide rails in such a way that the round tabs fit into the
corresponding openings on the lower side of the PSU.
2 Insert a filter mat in the filter subdrawer and secure it with the enclosed
fixing grid.
3 Position the filter subdrawer in the guide rails, push it back and swivel it up
so that it locks in place.
Step
1 Disconnect the power supply unit from the line voltage.
2 Use a screwdriver to remove the transparent cover.
3 Set the voltage selector switch to your required voltage.
4 Refit the transparent cover.
Action
Action
System Manual
C79000-G8576-C199-06