Siemens S5-135U/155U appendix Setting and Connecting the Power Supply Unit, Step Action

Central Controllers and Expansion Units Power Supply Units

4.3.2Setting and Connecting the Power Supply Unit

Before starting up your power supply unit, you must carry out certain steps according to your requirements with respect to power supply behavior in the event of a fault.

Power supply units are delivered in the following state:

SFitted in the CC or EU frame which you ordered

SWith preset jumpers

SAC line voltage set to 230 V (-3LC42, -3LF42)

If you wish to retain this setting, you can skip Steps 2 to 4 and 9.

If you do not wish to fit a filter subdrawer, skip step 8.

Step

1

2

3

4

5

6

7

8

9

10

Action

Check the setting and cabling

Remove the power supply unit

Set the jumpers

Fit the power supply unit

Wire the power supply unit to the installation (including fitting an isolating device to disconnect the AC line voltage)

Fit the lithium battery

Remove the right-hand fan and connect the rechargeable battery

Fit the filter subdrawer

Set the voltage selector switch

Switch the PSU on for the first time

If required

If required

If required

If required

If required

System Manual	4-23
C79000-G8576-C199-06