Safety notes
7
MODBUS RTU | SPI 3 | Trebing & Himstedt
–
The braiding of the screening should have a degree of
coverage of more than 80 %.
–
The screening should include a braided screen and
should not consist solely of foil screening, since the latter
can be easily damaged by cable tension and pressure.
–
To ensure good immunity to interference at high
frequencies as well, the screening of the cable should be
attached to the screening rail at both ends of the cable.
Safety notes for installation and operation of the SPI 3
Please observe the following before connecting up the SPI 3 to avoid risk to
personnel and damage to equipment and to ensure that the SPI 3 functions correctly:
– The SPI 3 is designed as an interface between fieldbus devices with serial
interfaces and the PROFIBUS. Do not use the SPI 3 for any other purpose.
– The SPI 3 may only be installed or de-installed by qualified technical personnel with
appropriate electrotechnical qualifications. When connecting up the SPI 3, you
must observe the guidelines in the VDE 0100 regulations for handling electrical
equipment.
– Always mount the SPI 3 on a suitable top-hat rail.
– The cables used to connect up the SPI 3 should not apply any mechanical forces
to the device.
Danger!
Never open the case of the SPI 3 and do not make any modifications to the
device.
Warning!
Small objects or liquids must not be allowed to enter the case of the SPI 3
(e.g. through the ventilation slots) since this could damage the device.
Never cover up the ventilation slots in the case.
Large temperature differences between the storage location and installation
site can cause condensation to form within the case of the SPI 3, which can
damage the device. If large temperature differences are present, you should
wait at least 3-4 hours after installing the SPI 3 and before switching on the
power.
