Special Conditions - Siemens SIMATIC S7-300 Manual Del Usuario

Maintenance
If repair is necessary, the affected module must be sent to the production location. Repairs
can only be carried there.

Special Conditions

1. The ET 200M distributed I/O device and the SIMATIC S7-300 must be installed in a
cabinet or metal housing. These must comply with the IP 54 degree of protection as a
minimum. The environmental conditions under which the equipment is installed must be
taken into account. There must be a manufacturer's declaration for zone 2 available for
the housing (in accordance with EN 50021).
2. If a temperature of > 70 °C is reached in the cable or at the cable entry of this housing
under operating conditions, or if a temperature of > 80 °C can be reached at the junction
of the conductors under operating conditions, the temperature-related properties of the
cables must correspond to the temperatures actually measured.
3. The cable entries used must comply with the required IP degree of protection and
Section 7.2 (in accordance with EN 50021).
4. All devices (including switches, etc.) that are connected to the inputs and outputs of fail-
safe signal modules must be approved for EEx nA or EEx nC explosion protection.
5. Steps must be taken to ensure that the rated voltage through transients cannot be
exceeded by more than 40 %.
6. Ambient temperature range: 0° C to 60° C
7. A sign containing the following warning must be put up inside the housing in an easily
visible position when the housing is opened:
Warning
The housing can only be opened for a short time (e.g. for visual diagnostics). If you do
this, do not operate any switches, remove or install any modules or disconnect any
electrical cables (plug-in connections).
You can disregard this warning if you know that the atmosphere is not hazardous (i.e.
there is no risk of explosion).
List of Approved Modules
You will find the list of approved modules under the ID 13702947 on the Internet:
http://www4.ad.siemens.de/view/cs/.
Sistema de automatización S7-300 Datos de los módulos
A5E00105507-03
Datos técnicos generales
1-21