E - VAE ProSys sro

3.2 Interference suppression / installation guidelinesPlease note carefully !The terminals are electronic devices which incorporate the latest technology. Their robust mechanical constructionas well the electronic components are designed for industrial use.Even so, it is necessary to observe certain basic measures when setting up such devices in industrial installationsto safeguard failure free operation:Interference voltages which can reach the device via supply and signal leads as well as electrostatic electricitythrough contact should be discharged through the ground terminal (such as the screw terminal at the rear of thehousing).This ground terminal must have a low resistance copper lead, kept as short as possible, either linked with the earthcontinuity conductor (yellow/green) or included in the equipotential grounding (permissible diameter of the cable :2,5mm² - 4mm² for terminal connectors, 10mm² for bolt type screw connectors, ·≥ 10mm² for equipotentialgrounding).If this is not observed, the high level of resistance to interference or damage which is a feature of the device maybe rendered ineffective.When the location for fitting the device is selected, it is important to maximise distance from areas of electromagneticfield disturbance. This is particularly important where frequency converters are in use.Under certain circumstances, it may be advisable to screen ‘disturbancy emitters’ with metal plates.Inductors in the vicinity (such as contactor, relay and magnetic valve coils) must be switched through fused links(such as RC links), particularly if they are connected to the same power supply.Power supplies and data leads should be routed to steer clear of interference.This may be achieved, for example, by not running them parallel to high power cables which give rise to interference.The following note applies to all devices which have been tested according to EN 50081-2; see the appendedDeclaration of EG-Conformity.Warning !This is a class A equipment. This equipment may cause radio interference in residential areas. In this case the usercan be required to take appropriate measures and he will have to pay the costs for them.Process display and control/ Device Manual/ Issue: 07.0121E