Siemens SIMATIC PANEL PC 877 - Manual (Page 28)

Application planning
4.4 Mounting Positions and Fastening
SIMATIC Panel PC 877
4-4
Operating instructions, Release 07/2006, A5E00877780-01
4.4
4.4
Mounting Positions and Fastening
4.4.1 Installation guidelines
Before installing the device, read the following general notes relating to installation.
Warning
Danger, high voltage
Isolate the power supply to the switchgear cabinet before opening it. Ensure that the power
to the switchgear cabinet cannot be turned on accidentally.
Caution
The device is approved for operation in closed rooms only.
• Ensure that the protective contact socket of the building installation is easily accessible
and that there is a mains disconnect switch in switchgear cabinet installations.
• Position the screen in an ergonomic position favorable to the user. Choose a suitable
installation height.
• Position the screen so that it is not subject to direct sunlight or other strong sources of
light.
• Optical drives are susceptible to shock. Shocks during operation can lead to the loss of
data or damage to the drive or data carrier. Optical drives are not only suitable for
continuous operation.
• Applies to devices which are installed in swivel arm housings: Avoid rapid or jerky
movements of the swivel arm during operation. The ensuing forces could lead to possible
irreversible damage of the hard disk.
The stops of the swivel arm must be damped in order to avoid any mechanical shock
effect to the Panel PC on attachment.
• Applies to devices which are installed in cabinet doors: Prevent the doors being slammed
shut. The ensuing forces could lead to possible irreversible damage of the hard disk.
• The device wtih DC power supply applies in the area of the computer unit and above all
the power supply connection in accordance with the UL approval as "open type" or "open
equipment". For this reason, the device must be installed in a control cabinet or housing
that complies with fire-proofing requirements