03.06
3.2 Installation of the SINUMERIK 840D
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© Siemens AG, 2006. All rights reserved
SINUMERIK 840D Configuring Manual NCU (PHD) – 03.06 Edition
3.2 Installation of the SINUMERIK 840D
You need the following tool to assembly the SINUMERIK 840D:
Screwdriver for slot-head screws sizes 0 and 1
Screwdriver for Torx screws M4 and M5
Note
The NCU is exclusively intended for installation in ESD-protected zones. The
ESD interference immunity limits relevant to CE compliance can only be
achieved by installation in a cabinet. Make contact only while taking suitable
ESD protective measures (see ESD information in the preface).
The NCU box is installed between the SIMODRIVE power supply and the first
SIMODRIVE drive module. To secure the NCU box, two M5 screws are recom-
mended.
SIMODRIVE
NCU MSD
Power supply
(I/R or OI)
FD
SIEMENS
Fig. 3-2 Position of the NCU in the overall configuration
!
Danger
A hazardous voltage will be present for a further 5 minutes after the system has
been shut down.
Preparing for
installation
Assembly of the
NCU box
3 Structure and Installation
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