Siemens ST950 Plus+ - Page 143

ST950 Plus+ User Manual
ST950 Plus+ User Manual
Page 143 of 176
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9.4.5 Replacement of 24V PSU.
24V PSU Replacement
Replacement of the 24V PSU – used to supply logic rails – will require the supply to the cabinet
to be switched off at the double pole master switch.
Once the controller cabinet has been shut down, the cables can be removed from the PSU. The
PSU will then need to be released from the DIN rail.
The replacement PSU can then be clicked into place, cables reinserted, and controller powered up.