Siemens S5-135U/155U appendix Installation, Installing the 15 Auxiliary Submodule

Models: S5-135U/155U

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Central Controllers and Expansion Units Power Supply Units

4.4.3Installation

!

Installing the 15 V

Auxiliary

Submodule

To install the power supply unit, push it into the rack. Press it in firmly until the front plate is at the rack. The spring pressure of the contact elements must be overcome. Then tighten the two screws to the left and right of the front plate in the rack. The protective conductor jumper on the left must be permanently connected to the front plate terminal and the central rack.

Caution

Power supply units may only be removed when no power is applied.

When the power supply unit is pulled out, the connection between backup battery and backplane bus is retained; the backup supply for the modules is thus ensured.

The auxiliary submodule (see ordering information for order number) may only be inserted when the power is off.

Remove the power supply unit, fit the 15 V auxiliary submodule at the location shown in the following figure.

Connector

Connector

X1

X2

 

Trans-

 

former

 

Space for

 

Auxiliary

 

Submodule

Front Plate

 

System Manual

4-63

C79000-G8576-C199-06

Page 129
Image 129
Siemens S5-135U/155U appendix Installation, Installing the 15 Auxiliary Submodule