Installation
8.2
ElectricalInstallation
Electrical connections
The operating unit requires electrical connections
S
S
S
to the power supply,
to the configuration computer (PU or PC),
to the PLC.
The electrical connection to the configuration computer is required purely for
downloading project data.
EMC compatible installation
A precondition for error-free operation is an EMC compatible hardware design of
the PLC and the use of interference-proof cables. The guidelines on
interference-free design of the PLCs apply equally to installation of the operating
unit.
Caution
!
S Only shielded cables are permitted for all signal connections.
S Screw or lock all plug connections.
S Do not install signal lines in the same cable ducts as power cables.
S Siemens AG refuses to accept liability for malfunctions and damage arising
from use of self-made cables or cables from other manufacturers.
TP070 Equipment Manual
Release03/00
8-4
SIEMENS [ Siemens Semiconductor Group ]
