V 1.6
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1.2 Electromagnetic Compatibility (EMC)
This device meets the requirements of EC Directive 89/336/EEC "Electromagnetic
Compatibility".
This device is Class A equipment and causes radio-frequency interference in
residential areas. In this case, the operator may be required to implement
adequate countermeasures.
The devices described in this manual each meet the relevant standards for electromagnetic
compatibility. However, this does not mean that their electromagnetic compatibility is still
guaranteed when fitted to a plant or machine.
For this reason, we urgently advise you to comply with the instructions on installation in
accordance with EMC requirements below. Only then can you assume that the overall system
complies with EMC requirements, provided CE-marked components are used exclusively.
Protection Against Electrostatic Discharge
The products described in this manual contain complex semiconductor components which may
be destroyed or damaged by electrostatic discharge (ESD).
Damage does not necessarily lead to immediate, detectable failure, or malfunction. These
states may be even delayed, or occur sporadically.
The generally accepted safety precautions for ESD sensitive devices must be observed when
handling the devices. The following precautions in particular must be taken:
Never unplug or plug in connectors live.
If you are an operator, discharge any static charge you may be carrying just
before you touch equipment. For example, you can touch a grounded part of
the machine, or wear an ESD discharge strap permanently connected to
ground.
Grounding
A short (as short as possible), low-impedance connection between the grounding point and the
reference ground is essential to divert interference voltages running between the device and
reference ground.
The inductance of standard FE conductors is a high impedance for high-frequency interference
voltages. For this reason, the use of grounding straps is advisable. If this is not possible, a fine-
wire FE conductor should be selected with the largest possible cross-section, and the
connection to ground should be kept as short as possible.
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