4 Description of the NCU
4.2 Mounting
4.2.2
NCU box with a fan box
Cable distributor
Battery/fan
slide-in module
Power
supply unit
Fan box
Fig. 4-3
Example: complete NCU box with fan box and NCU 573.3 (Pentium III)
Monitoring the
An alarm is issued if a fan fails.
fans
4-42
Link submodule
136
198
208
265
© Siemens AG, 2006. All rights reserved
SINUMERIK 840D Configuring Manual NCU (PHD) – 03.06 Edition
03.06
Cut-out for
link module
50
Sheet metal housing