Siemens 6DS2 124, Руководство пользователя

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Safty–Related Guidelines
3
©
Siemens AG C79000-D8076-C402-04
5 Guidelines for the Planning and Installation of the Product
The product generally forms a part of larger systems or plants. These guidelines are intended to
help integrate the product into its environment without it constituting a source of danger.
The following facts require particular attention:
Note
Even when a high degree of safety-related reliability has been designed into an item
of automation equipment by means of multichannel configuration, it is still imperative
that the instructions contained in this manual be exactly adhered to. Incorrect handling
can render ineffective the preventive measures incorporated into the system to protect
it against dangerous process states, and even create new sources of danger.
The following advice regarding installation and commissioning of the product should - in specific
cases - also be noted.
Warning
D
Follow strictly the safety and accident prevention rules that apply in each particular case.
D
Units which are designed as built-in units may only be operated as such, and table-
mounted or portable equipment only with its casing closed.
D
In the case of equipment with a permanent power connection which is not provided with
an isolating switch and/or fuses which disconnect all poles, a suitable isolating switch or
fuses must be provided in the building wiring system (distribution board). Furthermore, the
equipment must be connected to a protective ground (PE) conductor.
D
For equipment or systems with a fixed connecting cable but no isolating switch which
disconnects all poles, the power socket with the grounding pin must be installed close to
the unit and must be easily accessible.
D
Before switching on the equipment, make sure that the voltage range setting on the
equipment corresponds to the local power system voltage.
D
In the case of equipment operating on 24 V DC, make sure that proper electrical isolation
is provided between the mains supply and the 24 V supply. Only use power supply units to
IEC 364-4-41 or HD 384.04.41 (VDE 0100 Part 410).
D
The I/O modules are designed for operation with safety extra-low voltage acc. to IEC 950 /
EN 60950/VDE 0805. Therefore only components whose connection points are separated
in a safe manner (by means of the protective measure "Protective separation") from voltages
(e.g. mains) may be connected to the inputs/outputs of these modules.
D
Fluctuations or deviations of the power supply voltage from the rated value should not
exceed the tolerances specified in the technical specifications. Otherwise, functional failures
or dangerous conditions can occur in the electronic modules/equipment.
D
Suitable measures must be taken to make sure that programs that are interrupted by a
voltage dip or power supply failure resume proper operation when the power supply is
restored. Care must be taken to ensure that dangerous operating conditions do not occur
even momentarily. If necessary, the equipment must be forced into the "emergency off" state.
D
Emergency tripping devices in accordance with EN 60204/IEC 204 (VDE 0113) must be
effective in all operating modes of the automation equipment. Resetting the emergency off
device must not result in any uncontrolled or undefined restart of the equipment.
Caution
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Install the power supply and signal cables in such a manner as to prevent inductive and
capacitive interference voltages from affecting the automation functions.
D
Automation equipment and its operating elements must be installed in such a manner as to
prevent unintentional operation.
D
Automation equipment can assume an undefined state in the case of a wire break in the
signal lines. To prevent this, suitable hardware and software measures must be taken when
interfacing the inputs and outputs of the automation equipment.