BACHMANN MP226/EW Spare Parts Inventory
Technical data of product parameters
Correcting electrical noise problems can sometimes be a trial-and-error routine. In
troubleshooting noise problems, sometimes it is beneficial to experiment with the shield ground MP226/EW
point location. However, in general, it is usually best to ground the analog input cable shields
as close to the source of the noise as possible, which is usually at the device (analog source)
end. Cable shield should be grounded at one end only. Also, it is best to keep the length of
stripped cable leads as short as possible to minimize the length of unshielded conductors that
will be exposed to the noisy environment.Generally, the shield for analog input cables should be grounded at the analog source, as shown
in the next figure. However, ground connections for each channel, labeled COM and GND, on
the terminal board are provided for connecting shields at the analog input module if MP226/EW
appropriate. An analog input module’s COM terminals connect to the analog circuit common
in the module. The GND terminals connect to the baseplate (frame ground). The shields may
be connected to either COM or GND.
Technological advances used in electronic circuit design are often aimed at making equipment
smaller, faster, and more sensitive. This effort increases the concern for electrical noise.
Therefore, shielding and grounding are important when installing a Series 90-30 PLC system. MP226/EW
It is impossible to provide a practical installaton guide that covers all possible application designs.
Sometimes, experimentation with different grounding methods under actual operating conditions is
required to achieve maximum noise rejection. However, this section discusses four shield MP226/EW
grounding examples for analog input modules that have proven effective for most cases
Product picture display
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