ABB LT9673a HESG446076R1 HE663599-31813 analog control board

ABB LT9673a HESG446076R1 HE663599-31813 analog control board

Technical data of product parameters

As a standard, two M 2500 (4) bus bars are already installed in the cabinet and are connected
to the cabinet framework via 25 mm2 earthing straps (5). Additionally, the bus bars (4) can be LT9673a HESG446076R1 HE663599-31813
used for potentials separated from the earth just by removing the earthing straps (e.g. for the
screens of field cables). For the connection of the customers earthing an M 8 screw bolt is provided at the cabinet frameworkReliable shielding of data lines in HIMA communication systems is achieved by the following
measures:
The connection 1) of the cable shield from the bus subscriber’s (H41q, H51q) to the bus terminals (H 7506) is established on the bus subscriber’s side. Via the plug case and the metal front
plate a connection is established via the PCB layout to the PE cabinet earth. The other side of LT9673a HESG446076R1 HE663599-31813
the cable shield is not connected.
The connection 2) of the H 7505 interface converter is also established on one side via the plug
case. The connection to the top hat rail is established via the X2/1 5) connection. According to LT9673a HESG446076R1 HE663599-31813
HIMA earthing principles the top hat rail itself is connected to the cabinet earth or optionally, to
an instrument earth 6).
The connection 4) of the cable shield between the individual H 7506 bus terminals is established on one side via a terminal. The terminal is located on a top hat rail to which it is also LT9673a HESG446076R1 HE663599-31813
conductively connectedThe measures 1), 2), 3) are standardized already finished in HIMA. The connections 4), 5), 6)
have to be performed during the installation on site. The shielding connection using a special
cable 7) does already exist or has to be performed depending on the special cableAt installation of the field cables pay attention to the fact, that the cables to sensors and actuators are separated from power supply cables and in a sufficient distance from electromagnetic
active devices (motors, transformers).
Cables to the input modules of the H41q/H51q systems have to be installed interference-free
as possible e. g. as shielded cables.
This applies especially to cables with analog signals and for proximity switches.
With cable connectors having a shield termination line this has to be connected to the bus bar
of the I/O rack below the slot of the module.
Further informations on the requirements of shielding and earthing you will find in the data
sheets of the modules.

Product picture display

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