Siemens PC 670 - Manual (Page 27)

Starting Up the Computing Unit Release 04/02
2-3 Panel PC 670 Computing Unit, Equipment Manual
2.2 Installing the Computing Unit
The unit delivered is particularly suited for installation in consoles, cabinets and
panels.
The computing units with AC power supply meet the requirements of the fire
protection housing complying with EN60950. It can therefore be installed without
an additional fire enclosure;
The computing units with a DC power supply are considered open operating
resources (right side of device); therefore, the assembly design must fulfill the fire
protection housing requirements.
Please observe the following points when installing your device:
S Avoid extreme ambient conditions as far as possible. Protect the device from
dust, moisture and heat.
S
Do not expose your device to direct sunlight.
S
The device must be installed in such a way that it presents no danger of any
kind (for example, by tipping over).
S
The clearance around the device must be at least 100 mm to make sure it is
sufficiently ventilated.
S
Never cover the ventilation slots.
S
Observe the installation locations allowed when you install your device.
!
Warning
If systems are installed at a non-approved installation location, the approvals to
UL 1950 and EN60950 are no longer valid!