Siemens Simatic PC Panel PC 870, Руководство по эксплуатации оборудования

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Product Overview Release 11/02
1-6
SIMATIC Panel PC 870 Computing Unit, Equipment Manual
Mains supply
Lay the cables so that no one can step on or trip over them. When connecting the
device, carefully study the pertinent information given in Chapter 2.
Never connect or disconnect power cables or data transmission lines during a
thunderstorm.
In an emergency situation (for instance, damage to the housing, controls or power
cable, penetration by liquids or foreign bodies), pull the power plug and contact the
authorized service department.
The SIMATIC Panel PC 870 must be switched off before connecting/disconnecting
periphery units (keyboard, mouse, printer, etc.). Failure to do so can result in
damage to the PC.
Notes for devices with AC power supply
The device is intended for connection to grounded power supply systems
(TN networks to VDE 0100, Part 300, or IEC 364-3).
No provision is made for connection to non-grounded or impedance-grounded
power supply systems (IT networks).
The power cable should comply with the safety guidelines of the country
concerned.
Check to make sure that the rated voltage for the device coincides with that of the
local mains voltage.
This device is equipped with a safety-tested power supply cable and may be
connected only to a socket outlet with grounding contact.
Make sure that the socket outlet on the device or the socket outlet with grounding
contact of the building wiring system is freely accessible and located as near to the
device as possible.
To completely disconnect the PC from the mains power supply, you must pull the
plug. This connection must be easily accessible. If the PC is to be installed in a
cabinet, a central disconnector must be provided.
Note for devices with DC power supply
The mains power adapter area of the device does not fulfill the requirements of
fireproof housing complying to EN60950; therefore, the assembly configuration in
this area must fulfill the requirements of a fireproof housing.
!
Warning
The unit may only be connected to a 24 VDC mains power outlet which complies
to the requirements of SELV (Safety Extra-Low Voltage); a grounding conductor
must also be connected.
The cable cross-section must be adapted to the short circuit current of the 24 VDC
power source so that no damage is caused by the cable in the event of a short
circuit. Cable with a cross-section of up to 5 mm
2
can be connected.