Application planning
3.5 Mounting positions and fastening
SIMATIC PC Panel PC 677/877, Control Unit
3-4
Operating Instructions, Edition 04/2005, A5E00407724-01
3.5
3.5
Mounting positions and fastening
3.5.1
Installation notes
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. Make sure 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 central power disconnector 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.
•
CD/DVD drives are susceptible to shocks. Shocks during operation can lead to the loss of
data or damage to the drive or data carrier. Burners and CD/DVD are not suitable for
continous 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 device with DC power supply is considered an open means of operation on the part
of the voltage supply. Therefore, make sure that the switchgear cabinet fulfills the the
requirements of a fire protection housing.
Note
The computer unit with AC power supply fulfills the requirements of a fire protection
housing according to EN60950. Therefore, no additional fire protection is necessary for
the installation.
•
Provide adequate volume in the switchgear cabinet for air circulation and heat transport.
Keep at least 10 cm distance between the device and switchgear cabinet.
•
Do not allow the maximum air intake temperature to exceed 45 °C. Decisive is the
temperature measured at a distance of 10 cm from an air intake. The maximum air intake
temperature must be accounted for especially when sizing closed switchgear cabinets.
•
The minimum distance between the device and the housing is 10 cm on the air output
side at the ventilator.
•
Position the device so that the air vents of the housing are not covered up following
installation.