AEXZP0BB - ECO SMART DISPLAY - User Manual Page - 13/43
3.3 Protection and safety features
3.3.1 Protection features
- Connection Errors:
All inputs are protected against connection errors.
- External agents:
The controller is protected against dust and the spray of liquid to a degree of
protection meeting IP65.
3.3.2 Safety Features
U ZAPI devices are designed according to the prEN954-1 specifications for
safety related parts of control system and to UNI EN1175-1 norm.
U The safety of the machine is strongly related to installation; length, layout
and screening of electrical connections have to be carefully designed.
ZAPI is always available to cooperate with the customer in order to evaluate
installation and connection solutions. Furthermore, ZAPI is available to
develop new SW or HW solutions to improve the safety of the machine,
according to customer requirements.
Machine manufacturer holds the responsibility for the truck safety features
and related approval.
3.4 EMC
U EMC and ESD performances of an electronic system are strongly
influenced by the installation. Special attention must be given to the
lengths and the paths of the electric connections and the shields. This
situation is beyond ZAPI's control. Zapi can offer assistance and
suggestions, based on its years experience, on EMC related items.
However, ZAPI declines any responsibility for non-compliance,
malfunctions and failures, if correct testing is not made. The machine
manufacturer holds the responsibility to carry out machine validation,
based on existing norms (EN12895 for industrial truck; EN50081-2 for other
applications).
EMC stands for Electromagnetic Compatibility, and it represents the studies and
the tests on the electromagnetic energy generated or received by an electrical
device.
So the analysis works in two directions:
1) The study of the emission problems, the disturbances generated by the
device and the possible countermeasure to prevent the propagation of that
energy; we talk about “conduction” issues when guiding structures such as
wires and cables are involved, “radiated emissions” issues when it is studied
the propagation of electromagnetic energy through the open space. In our
case the origin of the disturbances can be found inside the controller with the
To Next Page
Loading...
General