Siemens S5-135U/155U appendix Installation and Startup

CPUs, Memory Cards, Memory Submodules, Interface Submodules

5.3.2Installation and Startup

Jumper Settings

Note

Removing and

Inserting the

Module

!

Insertion

All jumpers on the CPU 928B are required by the manufacturer for quality testing. You must not change the jumper settings.

Caution

Switch off the power supply before removing or inserting the module.

Proceed as follows to insert the CPU in the central controller:

Step Action

1Release the upper locking bar of the central controller and ensure that the locking pin for the module is correctly positioned with the slot-head horizontal.

2Select the correct slot (based on the labelling of the locking bar). Insert the CPUs in the S5-135U/155U from slot 11.

3Push the module evenly into the guide rail until the lever over the locking pin is horizontal.

4Press the locking pin inwards on the bottom of the module and rotate it 90_ clockwise.

5Secure the upper locking bar.

Note

If you install the CPU 928B -3UB21 as the replacement for a double-width CPU 928 or 928B, you must cover the slot which has been freed up with a blanking plate.

System Manual	5-33
C79000-G8576-C199-06