ABB LT8978b V1 HIEE320639R0001 digital input module

ABB LT8978b V1 HIEE320639R0001 digital input module

Technical data of product parameters

According to the guidline 89/336/EWG of the European Council (also law for EMC in the Federal Republic of Germany), since January 1st, 1996 all electrical equipments have to be provide with the CE symbol for Electromagnetic Compatibility (EMC) within the European Union.
All modules of the HIMA system families H41q/H51q are supplied with the CE symbol.
To prevent also EMC problems with the installation of controls (PLCs) in cabinets and frames,
the following measures are required:
– Installation of the H 7013 HIMA module as power supply filter directly at the 24 VDC feed-ing. The filter is not required if power supplies with the CE symbol are used, e. g. the HIMA LT8978b V1 HIEE320639R0001
standard power supplies.
– Correct and interference-free electrical installation in the ambient of the control, e. g. no
power current cables should run together with the 24 V cables.
– No filter H 7013 is necessary if the 24 V feeding is installed in an own power supply cabinet installed side by side to the cabinets with PLCs.
– Furthermore please notice the notes within the PES catalog concerning earthing, shielding LT8978b V1 HIEE320639R0001
and cable run to sensors and actuators.All touchable plates of the 19-inches HIMA components (e. g. blind plates and subracks) are
electrically conductive passivated (ESD protection, ESD = Electrostatic Discharge). The safe
electrical connection between built-in components, such as subracks, and the cabinet is made
via captive nuts with claws. The claws penetrate the surface of the swing frame (1) and thus
guarantee a safe electrical contact. The screws and washers used are made of high-grade LT8978b V1 HIEE320639R0001
steel to avoid electrical corrosion The parts of the cabinet framework (3) are welded together and therefore they make up an
electrically conductive constructional element. Swing frame, door, mounting rails and mounting
plates (if existing) are conductively connected to the cabinet framework via short earthing
straps with a cross section of 16 mm2 or 25 mm2. The earthing straps are covered with a yellow/green identifying sheath (5).
The top plate is screwed to the cabinet framework via four lifting eyes. Side panels and rear
panel are conductively connected via earthing clamps (7) (see Figure 8) to the cabinet framework as well as the bottom plate via screws

Product picture display

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