S5-115F Manual
Installation Guidelines
Mains connection for programmers
In each cabinet group, provide a grounding-type receptacle to supply power for a programmer.
The receptacle should be supplied from the distribution board to which the protective ground for
the cabinet is connected.
Cabinet lighting
Take normal lamps for cabinet lighting, e. g. LINESTRA® lamps are more suitable. For reasons of
noise immunity, do not use flourescent lamps inside the cabinet. If you must use fluorescent lamps,
take the measures shown in Figure 3-34.
Figure 3-38. Measures for Suppressing Noise from Fluorescent Lamps in the Cabinet
Shielding grid over lamp
Completely shielded cable
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Metal-encased switch
Mains filter or shielded mains cable
Separating inductors
Sheet-metal barriers are recommended for the part of the cabinet containing strong inductances
such as transformers or contactors.
Protection against electrostatic discharge
Metal housings or cabinets closed on all sides and with good metallic contact to the grounding
point at the installation location should be used to protect decivers and modules from electro-
static discharge.
If you install your controller in a terminal box, use cast or sheet-metal where possible. Plastic hou-
sings should always have a metallic surface.
Housing doors and covers must be connected to the housing ground with grounding strips or con-
tact springs.
If you are working on the controller with the cabinet open, please observe the guidelines on pro-
tective measures for ESD-(electrostatic discharge) endangered components and modules.
EWA 4NEB 811 6148-02
3-47
